USRE37064E1 - Process for producing styrenic polymer - Google Patents
Process for producing styrenic polymer Download PDFInfo
- Publication number
- USRE37064E1 USRE37064E1 US09/505,723 US50572300A USRE37064E US RE37064 E1 USRE37064 E1 US RE37064E1 US 50572300 A US50572300 A US 50572300A US RE37064 E USRE37064 E US RE37064E
- Authority
- US
- United States
- Prior art keywords
- group
- carbon atoms
- cyclopentadienyl
- indenyl
- titanium
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 229920000642 polymer Polymers 0.000 title claims abstract description 44
- 238000000034 method Methods 0.000 title claims abstract description 34
- -1 especially Polymers 0.000 claims abstract description 185
- 125000004432 carbon atom Chemical group C* 0.000 claims abstract description 69
- 125000000217 alkyl group Chemical group 0.000 claims abstract description 23
- 229910052751 metal Inorganic materials 0.000 claims abstract description 23
- 239000002184 metal Substances 0.000 claims abstract description 23
- 239000000178 monomer Substances 0.000 claims abstract description 19
- 150000003623 transition metal compounds Chemical class 0.000 claims abstract description 19
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 16
- 125000005234 alkyl aluminium group Chemical group 0.000 claims abstract description 13
- 239000003054 catalyst Substances 0.000 claims abstract description 10
- 239000007795 chemical reaction product Substances 0.000 claims abstract description 10
- CPOFMOWDMVWCLF-UHFFFAOYSA-N methyl(oxo)alumane Chemical compound C[Al]=O CPOFMOWDMVWCLF-UHFFFAOYSA-N 0.000 claims abstract description 8
- 230000000379 polymerizing effect Effects 0.000 claims abstract description 7
- 239000002168 alkylating agent Substances 0.000 claims abstract description 5
- 229940100198 alkylating agent Drugs 0.000 claims abstract description 5
- 125000000058 cyclopentadienyl group Chemical group C1(=CC=CC1)* 0.000 claims description 28
- 150000001875 compounds Chemical class 0.000 claims description 25
- 239000010936 titanium Substances 0.000 claims description 21
- 125000003454 indenyl group Chemical group C1(C=CC2=CC=CC=C12)* 0.000 claims description 19
- 125000005843 halogen group Chemical group 0.000 claims description 17
- 125000003545 alkoxy group Chemical group 0.000 claims description 15
- 125000004435 hydrogen atom Chemical group [H]* 0.000 claims description 15
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 11
- 229910052719 titanium Inorganic materials 0.000 claims description 11
- 125000003983 fluorenyl group Chemical group C1(=CC=CC=2C3=CC=CC=C3CC12)* 0.000 claims description 10
- 125000003118 aryl group Chemical group 0.000 claims description 9
- YVSMQHYREUQGRX-UHFFFAOYSA-N 2-ethyloxaluminane Chemical compound CC[Al]1CCCCO1 YVSMQHYREUQGRX-UHFFFAOYSA-N 0.000 claims description 8
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 claims description 7
- 229910052726 zirconium Inorganic materials 0.000 claims description 7
- 125000003277 amino group Chemical group 0.000 claims description 6
- 230000000737 periodic effect Effects 0.000 claims description 6
- 125000005103 alkyl silyl group Chemical group 0.000 claims description 5
- 229910052735 hafnium Inorganic materials 0.000 claims description 5
- VBJZVLUMGGDVMO-UHFFFAOYSA-N hafnium atom Chemical compound [Hf] VBJZVLUMGGDVMO-UHFFFAOYSA-N 0.000 claims description 5
- 125000005309 thioalkoxy group Chemical group 0.000 claims description 5
- MCULRUJILOGHCJ-UHFFFAOYSA-N triisobutylaluminium Chemical compound CC(C)C[Al](CC(C)C)CC(C)C MCULRUJILOGHCJ-UHFFFAOYSA-N 0.000 claims description 5
- 125000004423 acyloxy group Chemical group 0.000 claims description 4
- 125000004414 alkyl thio group Chemical group 0.000 claims description 4
- 239000002738 chelating agent Substances 0.000 claims description 4
- GNPVGFCGXDBREM-UHFFFAOYSA-N germanium atom Chemical compound [Ge] GNPVGFCGXDBREM-UHFFFAOYSA-N 0.000 claims description 4
- SQBBHCOIQXKPHL-UHFFFAOYSA-N tributylalumane Chemical compound CCCC[Al](CCCC)CCCC SQBBHCOIQXKPHL-UHFFFAOYSA-N 0.000 claims description 4
- VOITXYVAKOUIBA-UHFFFAOYSA-N triethylaluminium Chemical compound CC[Al](CC)CC VOITXYVAKOUIBA-UHFFFAOYSA-N 0.000 claims description 4
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical group [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 3
- 150000002603 lanthanum Chemical class 0.000 claims description 3
- CNWZYDSEVLFSMS-UHFFFAOYSA-N tripropylalumane Chemical compound CCC[Al](CCC)CCC CNWZYDSEVLFSMS-UHFFFAOYSA-N 0.000 claims description 3
- 229910052732 germanium Inorganic materials 0.000 claims description 2
- RTAKQLTYPVIOBZ-UHFFFAOYSA-N tritert-butylalumane Chemical compound CC(C)(C)[Al](C(C)(C)C)C(C)(C)C RTAKQLTYPVIOBZ-UHFFFAOYSA-N 0.000 claims description 2
- 125000001183 hydrocarbyl group Chemical group 0.000 claims 3
- 229920010524 Syndiotactic polystyrene Polymers 0.000 abstract description 23
- 230000000694 effects Effects 0.000 abstract description 13
- 230000003197 catalytic effect Effects 0.000 abstract description 9
- 150000001450 anions Chemical class 0.000 abstract description 7
- 238000004519 manufacturing process Methods 0.000 abstract description 7
- 150000001768 cations Chemical class 0.000 abstract description 5
- 150000002739 metals Chemical class 0.000 abstract description 5
- 229910052782 aluminium Inorganic materials 0.000 abstract description 3
- 230000002542 deteriorative effect Effects 0.000 abstract description 3
- 239000000047 product Substances 0.000 abstract description 3
- 239000011777 magnesium Substances 0.000 abstract description 2
- 150000003752 zinc compounds Chemical class 0.000 abstract description 2
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 abstract 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 abstract 1
- 238000000354 decomposition reaction Methods 0.000 abstract 1
- 229910052749 magnesium Inorganic materials 0.000 abstract 1
- ZWEHNKRNPOVVGH-UHFFFAOYSA-N 2-Butanone Chemical compound CCC(C)=O ZWEHNKRNPOVVGH-UHFFFAOYSA-N 0.000 description 42
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 18
- 150000003609 titanium compounds Chemical class 0.000 description 17
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 description 11
- 238000006116 polymerization reaction Methods 0.000 description 11
- 239000002904 solvent Substances 0.000 description 11
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 description 10
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 10
- 238000000944 Soxhlet extraction Methods 0.000 description 7
- 125000003710 aryl alkyl group Chemical group 0.000 description 7
- 125000004104 aryloxy group Chemical group 0.000 description 7
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 6
- VLKZOEOYAKHREP-UHFFFAOYSA-N n-Hexane Chemical compound CCCCCC VLKZOEOYAKHREP-UHFFFAOYSA-N 0.000 description 6
- 150000003254 radicals Chemical class 0.000 description 6
- 125000001797 benzyl group Chemical group [H]C1=C([H])C([H])=C(C([H])=C1[H])C([H])([H])* 0.000 description 5
- 239000003446 ligand Substances 0.000 description 5
- 239000000243 solution Substances 0.000 description 5
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 4
- IMNFDUFMRHMDMM-UHFFFAOYSA-N N-Heptane Chemical compound CCCCCCC IMNFDUFMRHMDMM-UHFFFAOYSA-N 0.000 description 4
- 125000002877 alkyl aryl group Chemical group 0.000 description 4
- 229910052801 chlorine Inorganic materials 0.000 description 4
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 description 4
- 150000002430 hydrocarbons Chemical group 0.000 description 4
- 229910052740 iodine Inorganic materials 0.000 description 4
- 125000001449 isopropyl group Chemical group [H]C([H])([H])C([H])(*)C([H])([H])[H] 0.000 description 4
- 229910052757 nitrogen Inorganic materials 0.000 description 4
- 125000002097 pentamethylcyclopentadienyl group Chemical group 0.000 description 4
- 125000005287 vanadyl group Chemical group 0.000 description 4
- ZCYVEMRRCGMTRW-UHFFFAOYSA-N 7553-56-2 Chemical compound [I] ZCYVEMRRCGMTRW-UHFFFAOYSA-N 0.000 description 3
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 3
- BTBUEUYNUDRHOZ-UHFFFAOYSA-N Borate Chemical compound [O-]B([O-])[O-] BTBUEUYNUDRHOZ-UHFFFAOYSA-N 0.000 description 3
- WKBOTKDWSSQWDR-UHFFFAOYSA-N Bromine atom Chemical compound [Br] WKBOTKDWSSQWDR-UHFFFAOYSA-N 0.000 description 3
- 239000002879 Lewis base Substances 0.000 description 3
- 125000003368 amide group Chemical group 0.000 description 3
- 125000004429 atom Chemical group 0.000 description 3
- 229910052794 bromium Inorganic materials 0.000 description 3
- 239000012986 chain transfer agent Substances 0.000 description 3
- 239000000460 chlorine Substances 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 3
- BOXSCYUXSBYGRD-UHFFFAOYSA-N cyclopenta-1,3-diene;iron(3+) Chemical compound [Fe+3].C=1C=C[CH-]C=1.C=1C=C[CH-]C=1 BOXSCYUXSBYGRD-UHFFFAOYSA-N 0.000 description 3
- 125000000118 dimethyl group Chemical group [H]C([H])([H])* 0.000 description 3
- 229910052731 fluorine Inorganic materials 0.000 description 3
- 150000002500 ions Chemical class 0.000 description 3
- 125000000959 isobutyl group Chemical group [H]C([H])([H])C([H])(C([H])([H])[H])C([H])([H])* 0.000 description 3
- 125000001972 isopentyl group Chemical group [H]C([H])([H])C([H])(C([H])([H])[H])C([H])([H])C([H])([H])* 0.000 description 3
- 150000007527 lewis bases Chemical class 0.000 description 3
- 125000004108 n-butyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 3
- 125000000740 n-pentyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 3
- 125000002347 octyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 3
- 125000001436 propyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])[H] 0.000 description 3
- ZCBSOTLLNBJIEK-UHFFFAOYSA-N silane titanium Chemical compound [SiH4].[Ti] ZCBSOTLLNBJIEK-UHFFFAOYSA-N 0.000 description 3
- 150000003440 styrenes Chemical class 0.000 description 3
- YBRBMKDOPFTVDT-UHFFFAOYSA-N tert-butylamine Chemical compound CC(C)(C)N YBRBMKDOPFTVDT-UHFFFAOYSA-N 0.000 description 3
- 125000003698 tetramethyl group Chemical group [H]C([H])([H])* 0.000 description 3
- 238000001644 13C nuclear magnetic resonance spectroscopy Methods 0.000 description 2
- JLBJTVDPSNHSKJ-UHFFFAOYSA-N 4-Methylstyrene Chemical compound CC1=CC=C(C=C)C=C1 JLBJTVDPSNHSKJ-UHFFFAOYSA-N 0.000 description 2
- MTMKRUBMKHFRCY-UHFFFAOYSA-M CO[Ti](C)(C)C.[V]I Chemical compound CO[Ti](C)(C)C.[V]I MTMKRUBMKHFRCY-UHFFFAOYSA-M 0.000 description 2
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 2
- YNQLUTRBYVCPMQ-UHFFFAOYSA-N Ethylbenzene Chemical compound CCC1=CC=CC=C1 YNQLUTRBYVCPMQ-UHFFFAOYSA-N 0.000 description 2
- PXGOKWXKJXAPGV-UHFFFAOYSA-N Fluorine Chemical compound FF PXGOKWXKJXAPGV-UHFFFAOYSA-N 0.000 description 2
- OFBQJSOFQDEBGM-UHFFFAOYSA-N Pentane Chemical compound CCCCC OFBQJSOFQDEBGM-UHFFFAOYSA-N 0.000 description 2
- 239000004793 Polystyrene Substances 0.000 description 2
- ANVXMERVMXCHMI-UHFFFAOYSA-K [Cl-].[Cl-].[Cl-].CC1C([Ti+3])=C(C)C2=C1C(C)C(C)C(C)C2C Chemical compound [Cl-].[Cl-].[Cl-].CC1C([Ti+3])=C(C)C2=C1C(C)C(C)C(C)C2C ANVXMERVMXCHMI-UHFFFAOYSA-K 0.000 description 2
- 125000001931 aliphatic group Chemical group 0.000 description 2
- 150000001338 aliphatic hydrocarbons Chemical class 0.000 description 2
- 125000002029 aromatic hydrocarbon group Chemical group 0.000 description 2
- 150000004945 aromatic hydrocarbons Chemical class 0.000 description 2
- 125000005110 aryl thio group Chemical group 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- GDTBXPJZTBHREO-UHFFFAOYSA-N bromine Substances BrBr GDTBXPJZTBHREO-UHFFFAOYSA-N 0.000 description 2
- YNBJMIXWGPOBGE-UHFFFAOYSA-N carbanide;cyclopenta-1,3-diene;titanium(4+) Chemical compound [CH3-].[CH3-].[Ti+4].C=1C=C[CH-]C=1.C=1C=C[CH-]C=1 YNBJMIXWGPOBGE-UHFFFAOYSA-N 0.000 description 2
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 description 2
- 229920001577 copolymer Polymers 0.000 description 2
- 230000006866 deterioration Effects 0.000 description 2
- 125000004663 dialkyl amino group Chemical group 0.000 description 2
- 125000002147 dimethylamino group Chemical group [H]C([H])([H])N(*)C([H])([H])[H] 0.000 description 2
- DMBHHRLKUKUOEG-UHFFFAOYSA-N diphenylamine Chemical group C=1C=CC=CC=1NC1=CC=CC=C1 DMBHHRLKUKUOEG-UHFFFAOYSA-N 0.000 description 2
- 150000002148 esters Chemical class 0.000 description 2
- 239000011737 fluorine Substances 0.000 description 2
- 150000002363 hafnium compounds Chemical class 0.000 description 2
- 239000011630 iodine Substances 0.000 description 2
- 229910052747 lanthanoid Inorganic materials 0.000 description 2
- 150000002602 lanthanoids Chemical class 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- YALAVAYMNJCEBU-UHFFFAOYSA-N n-(2-chloro-3-formylpyridin-4-yl)-2,2-dimethylpropanamide Chemical compound CC(C)(C)C(=O)NC1=CC=NC(Cl)=C1C=O YALAVAYMNJCEBU-UHFFFAOYSA-N 0.000 description 2
- 125000001624 naphthyl group Chemical group 0.000 description 2
- 239000003960 organic solvent Substances 0.000 description 2
- 125000000538 pentafluorophenyl group Chemical group FC1=C(F)C(F)=C(*)C(F)=C1F 0.000 description 2
- KHUXNRRPPZOJPT-UHFFFAOYSA-N phenoxy radical Chemical group O=C1C=C[CH]C=C1 KHUXNRRPPZOJPT-UHFFFAOYSA-N 0.000 description 2
- 229910052698 phosphorus Inorganic materials 0.000 description 2
- 125000003367 polycyclic group Chemical group 0.000 description 2
- 229920002223 polystyrene Polymers 0.000 description 2
- JUJWROOIHBZHMG-UHFFFAOYSA-O pyridinium Chemical compound C1=CC=[NH+]C=C1 JUJWROOIHBZHMG-UHFFFAOYSA-O 0.000 description 2
- 229920006395 saturated elastomer Polymers 0.000 description 2
- 125000003011 styrenyl group Polymers [H]\C(*)=C(/[H])C1=C([H])C([H])=C([H])C([H])=C1[H] 0.000 description 2
- 238000003786 synthesis reaction Methods 0.000 description 2
- JLTRXTDYQLMHGR-UHFFFAOYSA-N trimethylaluminium Chemical compound C[Al](C)C JLTRXTDYQLMHGR-UHFFFAOYSA-N 0.000 description 2
- 0 *.*I.C.C.C.C.C.C.C.C.C.CC.CC.CC.Cc1c(C)c(C)c2c3c(c(C)c2c1C)C(C)(C)C(C)(C)C3(C)C.Cc1c(C)c2c(c1C)C(C)(C)C(C)(C)C2C.Cc1c2c(c3c1C(C)(C)C(C)(C)C3(C)C)C(C)(C)C(C)(C)C2(C)C Chemical compound *.*I.C.C.C.C.C.C.C.C.C.CC.CC.CC.Cc1c(C)c(C)c2c3c(c(C)c2c1C)C(C)(C)C(C)(C)C3(C)C.Cc1c(C)c2c(c1C)C(C)(C)C(C)(C)C2C.Cc1c2c(c3c1C(C)(C)C(C)(C)C3(C)C)C(C)(C)C(C)(C)C2(C)C 0.000 description 1
- QCEOZLISXJGWSW-UHFFFAOYSA-K 1,2,3,4,5-pentamethylcyclopentane;trichlorotitanium Chemical compound [Cl-].[Cl-].[Cl-].CC1=C(C)C(C)([Ti+3])C(C)=C1C QCEOZLISXJGWSW-UHFFFAOYSA-K 0.000 description 1
- WVAFEFUPWRPQSY-UHFFFAOYSA-N 1,2,3-tris(ethenyl)benzene Chemical compound C=CC1=CC=CC(C=C)=C1C=C WVAFEFUPWRPQSY-UHFFFAOYSA-N 0.000 description 1
- PRJNEUBECVAVAG-UHFFFAOYSA-N 1,3-bis(ethenyl)benzene Chemical compound C=CC1=CC=CC(C=C)=C1 PRJNEUBECVAVAG-UHFFFAOYSA-N 0.000 description 1
- WEERVPDNCOGWJF-UHFFFAOYSA-N 1,4-bis(ethenyl)benzene Chemical compound C=CC1=CC=C(C=C)C=C1 WEERVPDNCOGWJF-UHFFFAOYSA-N 0.000 description 1
- VQCMTPXZRXULMQ-UHFFFAOYSA-N 1-[bis(4-methylphenyl)methyl]-4-methylbenzene Chemical compound C1=CC(C)=CC=C1[C+](C=1C=CC(C)=CC=1)C1=CC=C(C)C=C1 VQCMTPXZRXULMQ-UHFFFAOYSA-N 0.000 description 1
- SSZOCHFYWWVSAI-UHFFFAOYSA-N 1-bromo-2-ethenylbenzene Chemical compound BrC1=CC=CC=C1C=C SSZOCHFYWWVSAI-UHFFFAOYSA-N 0.000 description 1
- KQJQPCJDKBKSLV-UHFFFAOYSA-N 1-bromo-3-ethenylbenzene Chemical compound BrC1=CC=CC(C=C)=C1 KQJQPCJDKBKSLV-UHFFFAOYSA-N 0.000 description 1
- WGGLDBIZIQMEGH-UHFFFAOYSA-N 1-bromo-4-ethenylbenzene Chemical compound BrC1=CC=C(C=C)C=C1 WGGLDBIZIQMEGH-UHFFFAOYSA-N 0.000 description 1
- BOVQCIDBZXNFEJ-UHFFFAOYSA-N 1-chloro-3-ethenylbenzene Chemical compound ClC1=CC=CC(C=C)=C1 BOVQCIDBZXNFEJ-UHFFFAOYSA-N 0.000 description 1
- KTZVZZJJVJQZHV-UHFFFAOYSA-N 1-chloro-4-ethenylbenzene Chemical compound ClC1=CC=C(C=C)C=C1 KTZVZZJJVJQZHV-UHFFFAOYSA-N 0.000 description 1
- OEVVKKAVYQFQNV-UHFFFAOYSA-N 1-ethenyl-2,4-dimethylbenzene Chemical compound CC1=CC=C(C=C)C(C)=C1 OEVVKKAVYQFQNV-UHFFFAOYSA-N 0.000 description 1
- YNQXOOPPJWSXMW-UHFFFAOYSA-N 1-ethenyl-2-fluorobenzene Chemical compound FC1=CC=CC=C1C=C YNQXOOPPJWSXMW-UHFFFAOYSA-N 0.000 description 1
- NVZWEEGUWXZOKI-UHFFFAOYSA-N 1-ethenyl-2-methylbenzene Chemical compound CC1=CC=CC=C1C=C NVZWEEGUWXZOKI-UHFFFAOYSA-N 0.000 description 1
- XKMDZVINHIFHLY-UHFFFAOYSA-N 1-ethenyl-3,5-dimethylbenzene Chemical compound CC1=CC(C)=CC(C=C)=C1 XKMDZVINHIFHLY-UHFFFAOYSA-N 0.000 description 1
- ZJSKEGAHBAHFON-UHFFFAOYSA-N 1-ethenyl-3-fluorobenzene Chemical compound FC1=CC=CC(C=C)=C1 ZJSKEGAHBAHFON-UHFFFAOYSA-N 0.000 description 1
- JZHGRUMIRATHIU-UHFFFAOYSA-N 1-ethenyl-3-methylbenzene Chemical compound CC1=CC=CC(C=C)=C1 JZHGRUMIRATHIU-UHFFFAOYSA-N 0.000 description 1
- KEZDVVCDQRDBDN-UHFFFAOYSA-N 1-ethenyl-4-fluoro-2-methylbenzene Chemical compound CC1=CC(F)=CC=C1C=C KEZDVVCDQRDBDN-UHFFFAOYSA-N 0.000 description 1
- JWVTWJNGILGLAT-UHFFFAOYSA-N 1-ethenyl-4-fluorobenzene Chemical compound FC1=CC=C(C=C)C=C1 JWVTWJNGILGLAT-UHFFFAOYSA-N 0.000 description 1
- QEDJMOONZLUIMC-UHFFFAOYSA-N 1-tert-butyl-4-ethenylbenzene Chemical compound CC(C)(C)C1=CC=C(C=C)C=C1 QEDJMOONZLUIMC-UHFFFAOYSA-N 0.000 description 1
- AVYGCQXNNJPXSS-UHFFFAOYSA-N 2,5-dichloroaniline Chemical compound NC1=CC(Cl)=CC=C1Cl AVYGCQXNNJPXSS-UHFFFAOYSA-N 0.000 description 1
- ISRGONDNXBCDBM-UHFFFAOYSA-N 2-chlorostyrene Chemical compound ClC1=CC=CC=C1C=C ISRGONDNXBCDBM-UHFFFAOYSA-N 0.000 description 1
- DBWWINQJTZYDFK-UHFFFAOYSA-N 2-ethenyl-1,4-dimethylbenzene Chemical compound CC1=CC=C(C)C(C=C)=C1 DBWWINQJTZYDFK-UHFFFAOYSA-N 0.000 description 1
- FZHNODDFDJBMAS-UHFFFAOYSA-N 2-ethoxyethenylbenzene Chemical compound CCOC=CC1=CC=CC=C1 FZHNODDFDJBMAS-UHFFFAOYSA-N 0.000 description 1
- CTHJQRHPNQEPAB-UHFFFAOYSA-N 2-methoxyethenylbenzene Chemical compound COC=CC1=CC=CC=C1 CTHJQRHPNQEPAB-UHFFFAOYSA-N 0.000 description 1
- MDTDQDVMQBTXST-UHFFFAOYSA-K 2h-inden-2-ide;titanium(4+);trichloride Chemical compound Cl[Ti+](Cl)Cl.C1=CC=C2[CH-]C=CC2=C1 MDTDQDVMQBTXST-UHFFFAOYSA-K 0.000 description 1
- PMZXJPLGCUVUDN-UHFFFAOYSA-N 4-ethenyl-1,2-dimethylbenzene Chemical compound CC1=CC=C(C=C)C=C1C PMZXJPLGCUVUDN-UHFFFAOYSA-N 0.000 description 1
- TYMLOMAKGOJONV-UHFFFAOYSA-N 4-nitroaniline Chemical compound NC1=CC=C([N+]([O-])=O)C=C1 TYMLOMAKGOJONV-UHFFFAOYSA-N 0.000 description 1
- CAHQGWAXKLQREW-UHFFFAOYSA-N Benzal chloride Chemical compound ClC(Cl)C1=CC=CC=C1 CAHQGWAXKLQREW-UHFFFAOYSA-N 0.000 description 1
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- LTBRWBUKPWVGFA-UHFFFAOYSA-N butan-1-olate;hafnium(4+) Chemical compound [Hf+4].CCCC[O-].CCCC[O-].CCCC[O-].CCCC[O-] LTBRWBUKPWVGFA-UHFFFAOYSA-N 0.000 description 1
- BSDOQSMQCZQLDV-UHFFFAOYSA-N butan-1-olate;zirconium(4+) Chemical compound [Zr+4].CCCC[O-].CCCC[O-].CCCC[O-].CCCC[O-] BSDOQSMQCZQLDV-UHFFFAOYSA-N 0.000 description 1
- 125000000484 butyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000011203 carbon fibre reinforced carbon Substances 0.000 description 1
- 239000013522 chelant Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 125000001309 chloro group Chemical group Cl* 0.000 description 1
- LKRBKNPREDAJJQ-UHFFFAOYSA-M chloro-di(propan-2-yl)alumane Chemical compound [Cl-].CC(C)[Al+]C(C)C LKRBKNPREDAJJQ-UHFFFAOYSA-M 0.000 description 1
- 239000013256 coordination polymer Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- QOXHZZQZTIGPEV-UHFFFAOYSA-K cyclopenta-1,3-diene;titanium(4+);trichloride Chemical compound Cl[Ti+](Cl)Cl.C=1C=C[CH-]C=1 QOXHZZQZTIGPEV-UHFFFAOYSA-K 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- VJRUISVXILMZSL-UHFFFAOYSA-M dibutylalumanylium;chloride Chemical compound CCCC[Al](Cl)CCCC VJRUISVXILMZSL-UHFFFAOYSA-M 0.000 description 1
- GGSUCNLOZRCGPQ-UHFFFAOYSA-O diethyl(phenyl)azanium Chemical compound CC[NH+](CC)C1=CC=CC=C1 GGSUCNLOZRCGPQ-UHFFFAOYSA-O 0.000 description 1
- HJXBDPDUCXORKZ-UHFFFAOYSA-N diethylalumane Chemical compound CC[AlH]CC HJXBDPDUCXORKZ-UHFFFAOYSA-N 0.000 description 1
- YNLAOSYQHBDIKW-UHFFFAOYSA-M diethylaluminium chloride Chemical compound CC[Al](Cl)CC YNLAOSYQHBDIKW-UHFFFAOYSA-M 0.000 description 1
- HPNMFZURTQLUMO-UHFFFAOYSA-N diethylamine Chemical group CCNCC HPNMFZURTQLUMO-UHFFFAOYSA-N 0.000 description 1
- 125000001664 diethylamino group Chemical group [H]C([H])([H])C([H])([H])N(*)C([H])([H])C([H])([H])[H] 0.000 description 1
- HQWPLXHWEZZGKY-UHFFFAOYSA-N diethylzinc Chemical compound CC[Zn]CC HQWPLXHWEZZGKY-UHFFFAOYSA-N 0.000 description 1
- FRLYMSHUDNORBC-UHFFFAOYSA-N diisopropylzinc Chemical compound [Zn+2].C[CH-]C.C[CH-]C FRLYMSHUDNORBC-UHFFFAOYSA-N 0.000 description 1
- TUTOKIOKAWTABR-UHFFFAOYSA-N dimethylalumane Chemical compound C[AlH]C TUTOKIOKAWTABR-UHFFFAOYSA-N 0.000 description 1
- JGHYBJVUQGTEEB-UHFFFAOYSA-M dimethylalumanylium;chloride Chemical compound C[Al](C)Cl JGHYBJVUQGTEEB-UHFFFAOYSA-M 0.000 description 1
- MWNKMBHGMZHEMM-UHFFFAOYSA-N dimethylalumanylium;ethanolate Chemical compound CCO[Al](C)C MWNKMBHGMZHEMM-UHFFFAOYSA-N 0.000 description 1
- KZLUHGRPVSRSHI-UHFFFAOYSA-N dimethylmagnesium Chemical compound C[Mg]C KZLUHGRPVSRSHI-UHFFFAOYSA-N 0.000 description 1
- AXAZMDOAUQTMOW-UHFFFAOYSA-N dimethylzinc Chemical compound C[Zn]C AXAZMDOAUQTMOW-UHFFFAOYSA-N 0.000 description 1
- SKNCDRJPFBIAGA-UHFFFAOYSA-N diphenylarsane Chemical group C=1C=CC=CC=1[AsH]C1=CC=CC=C1 SKNCDRJPFBIAGA-UHFFFAOYSA-N 0.000 description 1
- UCLOAJGCFQIQQW-UHFFFAOYSA-N diphenylboron Chemical group C=1C=CC=CC=1[B]C1=CC=CC=C1 UCLOAJGCFQIQQW-UHFFFAOYSA-N 0.000 description 1
- ZMXPNWBFRPIZFV-UHFFFAOYSA-M dipropylalumanylium;chloride Chemical compound [Cl-].CCC[Al+]CCC ZMXPNWBFRPIZFV-UHFFFAOYSA-M 0.000 description 1
- RNGPIGJNRFZTPO-UHFFFAOYSA-M ditert-butylalumanylium;chloride Chemical compound [Cl-].CC(C)(C)[Al+]C(C)(C)C RNGPIGJNRFZTPO-UHFFFAOYSA-M 0.000 description 1
- BFIMXCBKRLYJQO-UHFFFAOYSA-N ethanolate;hafnium(4+) Chemical compound [Hf+4].CC[O-].CC[O-].CC[O-].CC[O-] BFIMXCBKRLYJQO-UHFFFAOYSA-N 0.000 description 1
- ASBGGHMVAMBCOR-UHFFFAOYSA-N ethanolate;zirconium(4+) Chemical compound [Zr+4].CC[O-].CC[O-].CC[O-].CC[O-] ASBGGHMVAMBCOR-UHFFFAOYSA-N 0.000 description 1
- 125000001301 ethoxy group Chemical group [H]C([H])([H])C([H])([H])O* 0.000 description 1
- 125000000219 ethylidene group Chemical group [H]C(=[*])C([H])([H])[H] 0.000 description 1
- 125000004705 ethylthio group Chemical group C(C)S* 0.000 description 1
- 238000010528 free radical solution polymerization reaction Methods 0.000 description 1
- KNLGRGALOHHVOL-UHFFFAOYSA-N hafnium(4+);methanidylbenzene Chemical compound [Hf+4].[CH2-]C1=CC=CC=C1.[CH2-]C1=CC=CC=C1.[CH2-]C1=CC=CC=C1.[CH2-]C1=CC=CC=C1 KNLGRGALOHHVOL-UHFFFAOYSA-N 0.000 description 1
- 150000004820 halides Chemical class 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 150000004678 hydrides Chemical class 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- SMWDFEZZVXVKRB-UHFFFAOYSA-O hydron;quinoline Chemical compound [NH+]1=CC=CC2=CC=CC=C21 SMWDFEZZVXVKRB-UHFFFAOYSA-O 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 150000002681 magnesium compounds Chemical class 0.000 description 1
- YHNWUQFTJNJVNU-UHFFFAOYSA-N magnesium;butane;ethane Chemical compound [Mg+2].[CH2-]C.CCC[CH2-] YHNWUQFTJNJVNU-UHFFFAOYSA-N 0.000 description 1
- DLPASUVGCQPFFO-UHFFFAOYSA-N magnesium;ethane Chemical compound [Mg+2].[CH2-]C.[CH2-]C DLPASUVGCQPFFO-UHFFFAOYSA-N 0.000 description 1
- DQZLQYHGCKLKGU-UHFFFAOYSA-N magnesium;propane Chemical compound [Mg+2].C[CH-]C.C[CH-]C DQZLQYHGCKLKGU-UHFFFAOYSA-N 0.000 description 1
- 150000001457 metallic cations Chemical class 0.000 description 1
- QSLMQGXOMLSFAW-UHFFFAOYSA-N methanidylbenzene;zirconium(4+) Chemical compound [Zr+4].[CH2-]C1=CC=CC=C1.[CH2-]C1=CC=CC=C1.[CH2-]C1=CC=CC=C1.[CH2-]C1=CC=CC=C1 QSLMQGXOMLSFAW-UHFFFAOYSA-N 0.000 description 1
- 125000001434 methanylylidene group Chemical group [H]C#[*] 0.000 description 1
- 125000000956 methoxy group Chemical group [H]C([H])([H])O* 0.000 description 1
- BQBCXNQILNPAPX-UHFFFAOYSA-N methoxy(dimethyl)alumane Chemical compound [O-]C.C[Al+]C BQBCXNQILNPAPX-UHFFFAOYSA-N 0.000 description 1
- GRVDJDISBSALJP-UHFFFAOYSA-N methyloxidanyl Chemical group [O]C GRVDJDISBSALJP-UHFFFAOYSA-N 0.000 description 1
- 125000002816 methylsulfanyl group Chemical group [H]C([H])([H])S[*] 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- RAYYZJTYTUPECK-UHFFFAOYSA-N n,n-diethyl-2,4-dinitroaniline Chemical compound CCN(CC)C1=CC=C([N+]([O-])=O)C=C1[N+]([O-])=O RAYYZJTYTUPECK-UHFFFAOYSA-N 0.000 description 1
- 125000004123 n-propyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])* 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 229910052758 niobium Inorganic materials 0.000 description 1
- 239000010955 niobium Substances 0.000 description 1
- GUCVJGMIXFAOAE-UHFFFAOYSA-N niobium atom Chemical compound [Nb] GUCVJGMIXFAOAE-UHFFFAOYSA-N 0.000 description 1
- 125000004433 nitrogen atom Chemical group N* 0.000 description 1
- 238000001225 nuclear magnetic resonance method Methods 0.000 description 1
- 125000001037 p-tolyl group Chemical group [H]C1=C([H])C(=C([H])C([H])=C1*)C([H])([H])[H] 0.000 description 1
- BBEVMUOEYNOTTE-UHFFFAOYSA-N pentamethyl-$l^{5}-stibane Chemical group C[Sb](C)(C)(C)C BBEVMUOEYNOTTE-UHFFFAOYSA-N 0.000 description 1
- 125000000951 phenoxy group Chemical group [H]C1=C([H])C([H])=C(O*)C([H])=C1[H] 0.000 description 1
- 125000003356 phenylsulfanyl group Chemical group [*]SC1=C([H])C([H])=C([H])C([H])=C1[H] 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 229920001596 poly (chlorostyrenes) Polymers 0.000 description 1
- 229920003197 poly( p-chlorostyrene) Polymers 0.000 description 1
- 229920001620 poly(3-methyl styrene) Polymers 0.000 description 1
- 229920001627 poly(4-methyl styrene) Polymers 0.000 description 1
- 229920001608 poly(methyl styrenes) Polymers 0.000 description 1
- 229920001447 polyvinyl benzene Polymers 0.000 description 1
- KVIKMJYUMZPZFU-UHFFFAOYSA-N propan-2-ol;titanium Chemical compound [Ti].CC(C)O.CC(C)O KVIKMJYUMZPZFU-UHFFFAOYSA-N 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000011369 resultant mixture Substances 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 229910001494 silver tetrafluoroborate Inorganic materials 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 125000000547 substituted alkyl group Chemical group 0.000 description 1
- 229910052715 tantalum Inorganic materials 0.000 description 1
- GUVRBAGPIYLISA-UHFFFAOYSA-N tantalum atom Chemical compound [Ta] GUVRBAGPIYLISA-UHFFFAOYSA-N 0.000 description 1
- YONPGGFAJWQGJC-UHFFFAOYSA-K titanium(iii) chloride Chemical compound Cl[Ti](Cl)Cl YONPGGFAJWQGJC-UHFFFAOYSA-K 0.000 description 1
- 125000003944 tolyl group Chemical group 0.000 description 1
- 229910052723 transition metal Inorganic materials 0.000 description 1
- FQMMZTDQJFUYSA-UHFFFAOYSA-N triheptylalumane Chemical compound CCCCCCC[Al](CCCCCCC)CCCCCCC FQMMZTDQJFUYSA-UHFFFAOYSA-N 0.000 description 1
- ORYGRKHDLWYTKX-UHFFFAOYSA-N trihexylalumane Chemical compound CCCCCC[Al](CCCCCC)CCCCCC ORYGRKHDLWYTKX-UHFFFAOYSA-N 0.000 description 1
- 125000000026 trimethylsilyl group Chemical group [H]C([H])([H])[Si]([*])(C([H])([H])[H])C([H])([H])[H] 0.000 description 1
- JOJQVUCWSDRWJE-UHFFFAOYSA-N tripentylalumane Chemical compound CCCCC[Al](CCCCC)CCCCC JOJQVUCWSDRWJE-UHFFFAOYSA-N 0.000 description 1
- OLFPYUPGPBITMH-UHFFFAOYSA-N tritylium Chemical compound C1=CC=CC=C1[C+](C=1C=CC=CC=1)C1=CC=CC=C1 OLFPYUPGPBITMH-UHFFFAOYSA-N 0.000 description 1
- 150000003682 vanadium compounds Chemical class 0.000 description 1
- 239000008096 xylene Substances 0.000 description 1
- 125000005023 xylyl group Chemical group 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
- 150000003755 zirconium compounds Chemical class 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F12/00—Homopolymers and copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an aromatic carbocyclic ring
- C08F12/02—Monomers containing only one unsaturated aliphatic radical
- C08F12/04—Monomers containing only one unsaturated aliphatic radical containing one ring
- C08F12/06—Hydrocarbons
- C08F12/08—Styrene
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F2410/00—Features related to the catalyst preparation, the catalyst use or to the deactivation of the catalyst
- C08F2410/01—Additive used together with the catalyst, excluding compounds containing Al or B
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F4/00—Polymerisation catalysts
- C08F4/42—Metals; Metal hydrides; Metallo-organic compounds; Use thereof as catalyst precursors
- C08F4/44—Metals; Metal hydrides; Metallo-organic compounds; Use thereof as catalyst precursors selected from light metals, zinc, cadmium, mercury, copper, silver, gold, boron, gallium, indium, thallium, rare earths or actinides
- C08F4/60—Metals; Metal hydrides; Metallo-organic compounds; Use thereof as catalyst precursors selected from light metals, zinc, cadmium, mercury, copper, silver, gold, boron, gallium, indium, thallium, rare earths or actinides together with refractory metals, iron group metals, platinum group metals, manganese, rhenium technetium or compounds thereof
- C08F4/62—Refractory metals or compounds thereof
- C08F4/64—Titanium, zirconium, hafnium or compounds thereof
- C08F4/659—Component covered by group C08F4/64 containing a transition metal-carbon bond
- C08F4/65908—Component covered by group C08F4/64 containing a transition metal-carbon bond in combination with an ionising compound other than alumoxane, e.g. (C6F5)4B-X+
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F4/00—Polymerisation catalysts
- C08F4/42—Metals; Metal hydrides; Metallo-organic compounds; Use thereof as catalyst precursors
- C08F4/44—Metals; Metal hydrides; Metallo-organic compounds; Use thereof as catalyst precursors selected from light metals, zinc, cadmium, mercury, copper, silver, gold, boron, gallium, indium, thallium, rare earths or actinides
- C08F4/60—Metals; Metal hydrides; Metallo-organic compounds; Use thereof as catalyst precursors selected from light metals, zinc, cadmium, mercury, copper, silver, gold, boron, gallium, indium, thallium, rare earths or actinides together with refractory metals, iron group metals, platinum group metals, manganese, rhenium technetium or compounds thereof
- C08F4/62—Refractory metals or compounds thereof
- C08F4/64—Titanium, zirconium, hafnium or compounds thereof
- C08F4/659—Component covered by group C08F4/64 containing a transition metal-carbon bond
- C08F4/65912—Component covered by group C08F4/64 containing a transition metal-carbon bond in combination with an organoaluminium compound
Definitions
- the present invention relates to a process for producing a styrenic polymer. More particularly, it pertains to a process for producing a styrenic polymer having a high degree of syndiotactic configuration efficiently and inexpensively.
- a process for producing a styrenic polymer having a syndiotactic configuration (hereinafter sometimes referred to as “SPS”) by polymerizing a styrenic monomer by means of a catalyst comprising a transition metal compound as a primary ingredient, especially a titanium compound and methylaluminoxane (refer to Japanese Patent Application Laid-Open No. 187708/1987) has been proposed.
- SPS syndiotactic configuration
- the aforesaid situation calls for the development of a process capable of producing a styrenic polymer of high performance at a low cost, while enabling a decrease in the molecular weight of the resultant polymer and simplifying the process itself without deteriorating the catalytic activity.
- the present invention provides a process for producing a styrenic polymer which comprises polymerizing a styrenic monomer by the use of (a) a transition metal compound, (b) a coordination complex compound comprising an anion in which a plurality of radicals are bonded to a metal and a cation, or methylaluminoxane, (c) an alkylating agent and (d) a reaction product between a straight chain alkylaluminum having at least two carbon atoms and water.
- R 1 , R 2 , R 3 and R 4 are each an alkyl group, an alkoxyl group, an aryl group, a cyclopentadienyl group, an alkylthio group, a substituted cyclopentadienyl group, an indenyl group, a substituted indenyl group, a fluorenyl group, a halogen atom or a chelating agent; a, b and c are each an integer of from 0 to 4; d and e are each an integer of from 0 to 3; and any two of R 1 to R 4 may form a complex which is crosslinked with CH 2 , Si(CH 3 ) 2 or the like.
- the group 4 metals especially titanium, zirconium, hafnium and the like.
- titanium compounds can be used and a preferred example is at least one compound selected from the group consisting of titanium compounds and titanium chelate compounds represented by the general formula (III) or (IV):
- R 5 , R 6 , R 7 and R 8 in the general formulae (III) and (IV) each represent a hydrogen atom, an alkyl group having 1 to 20 carbon atoms (specifically, methyl group, ethyl group, propyl group, butyl group, amyl group, isoamyl group, isobutyl group, octyl group and 2-ethylhexyl group), an alkoxyl group having 1 to 20 carbon atoms (specifically, methoxyl group, ethoxyl group, propoxyl group, butoxyl group, amyloxyl group, hexyloxyl group, and 2-ethylhexyloxyl group), an aryl group having 6 to 20 carbon atoms, an alkylaryl group, an arylalkyl group (specifically, phenyl group, tolyl group, xylyl group and benzyl group), an acyloxyl group having 1 to 20 carbon atoms (specific
- More desirable titanium compounds include a titanium compound represented by the formula (V)
- R represents a cyclopentadienyl group, a substituted cyclopentadienyl group, an indenyl group, a substituted indenyl group, a fluorenyl group, or the like;
- X, Y, and Z independently of one another, are a hydrogen atom, an alkyl group having 1 to 12 carbon atoms, an alkoxyl group having 1 to 12 carbon atoms, an aryl group having 6 to 20 carbon atoms, an aryloxyl group having 6 to 20 carbon atoms, an arylalkyl group having 6 to 20 carbon atoms, an alkyl- or arylamide group having 1 to 40 carbon atoms or a halogen atom.
- any one of X, Y and Z and R may form a compound which is crosslinked with CH 2 , SiR 2 or the like.
- the substituted cyclopentadienyl group represented by R in the above formula is, for example, a cyclopentadienyl group substituted by at least one of an alkyl group having 1 to 6 carbon atoms, more specifically, methylcyclopentadienyl group, 1,2-dimethylcyclopentadienyl group, 1,2,4-trimethylcyclopentadienyl group, 1,2,3,4-tetramethylcyclopentadienyl group, trimethylsilylcyclopentadienyl group, 1,3-di(trimethylsilyl) cyclopentadienyl group, tert-butylcyclopentadienyl group, 1,3-di(tert-butyl)cyclopentadienyl group, pentamethylcyclopentadienyl group or the like.
- X, Y, and Z are each independently a hydrogen atom, an alkyl group having 1 to 12 carbon atoms (specifically, methyl group, ethyl group, propyl group, n-butyl group, isobutyl group, amyl group, isoamyl group, octyl group and 2-ethylhexyl group), an alkoxyl group having 1 to 12 carbon atoms (specifically, methoxyl group, ethoxyl group, propoxyl group, butoxyl group, amyloxyl group, hexyloxyl group, octyloxyl group and 2-ethylhexyloxyl group), an aryl group having 6 to 20 carbon atoms (specifically, phenyl group and naphthyl group), an aryloxyl group having 6 to 20 carbon atoms (specifically, phenoxyl group), an arylalkyl group having 6 to 20 carbon atoms (specifically,
- titanium compound represented by the general formula (V) examples include cyclopentadienyltrimethyltitanium, cyclopentadienyltriethyltitanium, cyclopentadienyltripropyltitanium, cyclopentadienyltributyltitanium, methylcyclopentadienyltrimethyltitanum, 1,2-dimethylcyclopentadienyltrimethyltitanium, 1,2,4-trimethylcyclopentadienyltrimethyltitanium, 1,2,3,4-tetramethylcyclopentadienyltrimethyltitanium, pentamethylcyclopentadienyltrimethyltitanium, pentamethylcyclopentadienyltriethyltitanium, pentamethylcyclopentadienyltripropyltitanium, pentamethylcyclopentadienyltributyltitanium, cyclopent
- titanium compounds a compound not containing a halogen atom is preferred and a titanium compound having one ⁇ electron type ligand is particularly desirable.
- a condensed titanium compound represented by the general formula (VI) may be used as the titanium compound.
- R 9 and R 10 each represent a halogen atom, an alkoxyl group having 1 to 20 carbon atoms or an acyloxyl group; and k is an integer from 2 to 20.
- titanium compounds may be used in the form of a complex formed with an ester, an ether or the like.
- the trivalent titanium compound represented by the formula (VI) typically includes a trihalogenatd titanium such as titanium trichloride; and a cyclopentadienyltitanium compound such as cyclopentadienyltitanium dichloride, and also those obtained by reducing a tetravalent titanium compound.
- a trihalogenatd titanium such as titanium trichloride
- a cyclopentadienyltitanium compound such as cyclopentadienyltitanium dichloride, and also those obtained by reducing a tetravalent titanium compound.
- These trivalent titanium compounds may be used in the form of a complex formed with an ester, an ether or the like.
- zirconium compound used as the transition metal compound examples include tetrabenzylzirconium, zirconium tetraethoxide, zirconium tetrabutoxide, bisindenylzirconium dichloride, triisopropoxyzirconium chloride, zirconium benzyldichloride and tributoxyzirconium chloride.
- hafnium compound examples include tetrabenzylhafnium, hafnium tetraethoxide and hafnium tetrabutoxide.
- vanadium compound examples include vanadyl bisacetylacetonato, vanadyl triacetylacetonato, vanadyl triethoxide and vanadyl tripropoxide.
- transition metal compounds the titanium compounds are particularly suitable.
- the transition metal compounds constituting the component (a) include the transition metal compound with two ligands having conjugated ⁇ electrons, for example, at least one compound selected from the group consisting of the transition metal compounds represented by the general formula:
- M 1 is titanium, zirconium or hafnium;
- R 11 and R 12 are each a cyclopentadienyl group, substituted cyclopentadienyl group, indenyl group or fluorenyl group and
- R 13 and R 14 are each a hydrogen atom, a halogen atom, a hydrocarbon group having 1 to 20 carbon atoms, an alkoxyl group having 1 to 20 carbon atoms, an amino group or thioalkoxyl group having 1 to 20 carbon atoms, but R 11 and R 12 may be each crosslinked by a hydrocarbon group having 1 to 5 carbon atoms, alkylsilyl group having 1 to 20 carbon atoms and 1 to 5 silicon atoms or germanium-containing hydrocarbon group having 1 to 20 carbon atoms and 1 to 5 germanium atoms.
- each of R 11 and R 12 in the general formula (VII) designates a cyclopentadienyl group, substituted cyclopentadienyl group, more specifically, methylcyclopentadienyl group; 1,3-dimethylcyclopentadienyl group; 1,2,4-trimethylcyclopentadienyl group; 1,2,3,4-tetramethylcyclopentadienyl group; pentamethylcyclopentadienyl group; trimethylsilylcyclopentadienyl group; 1,3-di(trimethylsilyl)cyclopentadienyl group; 1,2,4-tri(trimethylsilyl)cyclopentadienyl group; tert-butylcyclopentadienyl group; 1,3-di(tert-butyl) cyclopentadienyl group; 1,2,4-tri(tert-butyl) cyclopentadienyl group or the like, in
- R 13 and R 14 independently indicates, as described above but more specifically, a hydrogen atom; an alkyl group having 1 to 20 carbon atoms such as methyl group, ethyl group, propyl group, n-butyl group, isobutyl group, amyl group, isoamyl group, octyl group or 2-ethylhexyl group; an aryl group having 6 to 20 carbon atoms such as phenyl group or naphthyl group; an arylalkyl group having 7 to 20 carbon atoms such as benzyl group; an alkoxyl group having 1 to 20 carbon atoms such as methoxyl group, ethoxyl group, propoxyl group, butoxyl group, amyloxyl group, hexyloxyl group, octyloxyl group or 2-ethylhexyloxyl group; an aryloxyl group having 6 to 20 carbon atoms such as phenoxyl group; an amino
- transition metal compounds represented by the general formula (VII) wherein M 1 is titanium include bis(cyclopentadienyl)dimethyltitanium; bis(cyclopentadienyl)diethyltitanium; bis(cyclopentadienyl)dipropyltitanium; bis(cyclopentadienyl)dibutyltitanium; bis(methylcyclopentadienyl)dimethyltitanium; bis(tert-butylcyclopentadienyl)dimethyltitanium; bis(1,3-dimethylcyclopentadienyl)dimethyltitanium; bis(1,3-di-tert-butylcyclopentadienyl)dimethyltitanium; bis(1,2,4-trimethylcyclopentadienyl)dimethyltitanium; bis(1,2,3,4-tetramethylcyclopentadienyl)dimethyltitanium;
- transition metal compounds represented by the formula (VII) wherein M 1 is zirconium include ethylidenebiscyclopentadienylzirconium dimethoxide and dimethylsilylbiscyclopentadienylzirconium dimethoxide.
- hafnium compounds according to the general formula (VII) include ethylidenebiscyclopentadienylhafnium dimethoxide, dimethylsilylbiscyclopentadienylhafnium dimethoxide, etc. Particularly desirable transition metal compounds among them are titanium compounds.
- the compound may be a bidentate coordination complex compound such as 2,2′-thiobis-(4-methyl-6-tert-butylphenyl)titanium diisopropoxide; 2,2′-thiobis(4-methyl-6-tert-butylphenyl)titanium dimethoxide or the like.
- transition metal compound of the component (a) usable in the present invention there is available at least one compound selected from the group consisting of the transition metal compounds having the constitution represented by the general formula (VIII)
- R is, as a ⁇ ligand, a fused polycyclic cyclopentadienyl group wherein at least one of many-membered rings to which cyclopentadienyl groups are fusedly bonded is a saturated ring
- M is as previously defined
- X′ is a ⁇ ligand
- a plurality of X′ may be the same or different and bonded to each other through an arbitrary group
- L 1 is a Lewis base
- p is the valency of M
- q is 0, 1 or 2 and when L 1 is plural, each L 1 may be the same or different.
- the above-mentioned fused polycyclic cyclopentadienyl group is exemplified by that selected from those represented by any one of the general formulae (IX) to (XI)
- R 15 , R 16 and R 17 are each a hydrogen atom, a hydrogen atom, a halogen atom, an aliphatic hydrocarbon group having 1 to 20 carbon atoms, an aromatic hydrocarbon group having 6 to 20 carbon atoms, an alkoxyl group having 1 to 20 carbon atoms, an aryloxyl group having 6 to 20 carbon atoms, a thioalkoxyl group having 1 to 20 carbon atoms, a thioaryloxyl group having 6 to 20 carbon atoms, an amino group, an amide group, a carboxyl group or an alkylsilyl group and may be the same as or different from each other; and w, x, y and z are each an integer of 1 or greater.
- 4,5,6,7-tetrahydroindenyl group is preferable from the viewpoint of catalytic activity and the ease of its synthesis.
- R′ examples include 4,5,6,7-tetrahydroindenyl group; 1-methyl-4,5,6,7-tetrahydroindenyl group; 2-methyl-4,5,6,7-tetrahydroindenyl group; 1,2-dimethyl-4,5,6,7-tetrahydroindenyl group; 1,3-dimethyl-4,5,6,7-tetrahydroindenyl group; 1,2,3-trimethyl-4,5,6,7-tetrahydroindenyl group; 1,2,3,4,5,6,7-heptamethyl-4,5,6,7-tetrahydroindenyl group; 1,2,4,5,6,7-hexamethyl-4,5,6,7-tetrahydroindenyl group; 1,3,4,5,6,7-hexamethyl-4,5,6,7-tetrahydroindenyl group; octahydrofluorenyl group; 1,2,3,4-tetrahydrofluorenyl group; 9-methyl-1,2,3,4-te
- M is a Group 3 to 6 metal or a lanthanoids metal and exemplified by titanium, zirconium, hafnium, lanthanoids, niobium and tantalum. Of these titanium is preferable from the viewpoint of catalytic activity.
- X′ is a ⁇ ligand and is exemplified by a hydrogen atom, a halogen atom, an aliphatic hydrocarbon group having 1 to 20 carbon atoms, an aromatic hydrocarbon group having 6 to 20 carbon atoms, an alkoxyl group having 1 to 20 carbon atoms, an aryloxyl group having 6 to 20 carbon atoms, a thioalkoxyl group having 1 to 20 carbon atoms, a thioaryloxyl group having 6 to 20 carbon atoms, an amino group, an amide group, a carboxyl group or an alkylsilyl group, and a plurality of X′ may be the same or different and bonded to each other through an arbitrary group.
- X′ is specifically exemplified by hydrogen atom, chlorine atom, bromine atom, iodine atom, methyl group, benzyl group, phenyl group, trimethylsilylmethyl group, methoxy group, ethoxy group, phenoxy group, thiomethoxy group, thiophenoxy group, dimethylamino group and diisopropylamino group.
- L 1 is a Lewis base
- p is the valency of M and q is 0, 1 or 2.
- transition metal compound represented by the general formula (VIII) there can preferably be employed a compound comprising R′ and X′ each arbitrarily selected from the above-exemplified groups.
- the transition metal compound represented by the general formula (I) is specifically exemplified by but not limited to 4,5,6,7-tetrahydroindenyltitanium trichloride; 4,5,6,7-tetrahydroindenyltrimethyltitanium; 4,5,6,7-tetrahydroindenyltribenzyltitanium; 4,5,6,7-tetrahydroindenyltitanium trimethoxide; 1-methyl-4,5,6,7-tetrahydroindenyltitanium trichloride; 1-methyl-4,5,6,7-tetrahydroindenyltrimethyltitanium; 1-methyl-4,5,6,7-tetrahydroindenyltribenzyltitanium; 1-methyl-4,5,6,7-tetrahydroindenyltitanium trimethoxide; 2-methyl-4,5,6,7-tetrahydroindenyltitanium trichloride; 2-methyl-
- coordination complex compounds comprising an anion in which a plurality of radicals are bonded to a metal to be used as the component (b) in the present invention, and there is preferably usable such a coordination complex compound as represented by the following general formula (XII) or (XIII):
- L 2 is M 4 , R 18 R 19 M 5 or R 20 3 C as hereinafter described;
- L 1 is a Lewis base;
- M 2 and M 3 are each a metal selected from Groups 5 to 15 of the Periodic Table;
- M 4 is a metal selected from Groups 8 to 12 of the Periodic Table;
- M 5 is a metal selected from Groups 8 to 10 of the Periodic Table;
- X 1 to X n are each a hydrogen atom, a dialkylamino group, an alkoxyl group, an aryloxyl group, an alkyl group having 1 to 20 carbon atoms, an aryl group, an alkylaryl group or an arylalkyl group, each having 6 to 20 carbon atoms, a substituted alkyl group, an organometalloid group or a halogen atom;
- R 18 and R 19 are each a cyclopentadienyl group, a substituted cyclopentadienyl group, an indeny
- M 2 and M 3 include B, Al, Si, P, As, Sb, etc. in the form of atom; those of M 4 include Ag, Cu, etc. in the form of atom; and those of M 5 include Fe, Co, Ni, etc. in the form of atom.
- X 1 to X n include a dialkylamino group such as dimethylamino and diethylamino; an alkoxyl group such as methoxyl, ethoxyl and n-butoxyl; an aryloxyl group such as phenoxyl, 2,6-dimethylphenoxyl and naphthyloxyl; an alkyl group having 1 to 20 carbon atoms such as methyl, ethyl, n-propyl, iso-propyl, n-butyl, n-octyl and 2-ethylhexyl; an aryl group, an alkylaryl group or an arylalkyl group each having 6 to 20 carbon atoms, such as phenyl, p-tolyl, benzyl, pentafluorophenyl, 3,5-di(trifluoromethyl)phenyl, 4-tertbutylphenyl, 2,6-dimethylphenyl, 3,5-d
- anion in which a plurality of radicals are bonded to a metal include B(C 6 F 5 ) 4 ⁇ , B(C 6 HF 4 ) 4 ⁇ , B(C 6 H 2 F 3 ) 4 ⁇ , B(C 6 H 3 F 2 ) 4 ⁇ , B(C 6 H 4 F) 4 ⁇ , B(C 6 CF 3 F 4 ) 4 ⁇ , B(C 6 F 5 ) 4 ⁇ , BF 4 ⁇ , PF 6 ⁇ , P(C 6 F 5 ) 6 ⁇ and Al(C 6 HF 4 ) 4 ⁇ .
- the metallic cation examples include CpFe + , (MeCp) 2 Fe + , (tBuCp) 2 Fe + , (Me 2 Cp) 2 Fe + , (Me 3 CP) 2 Fe + , (Me 4 Cp) 2 Fe + , (Me 5 Cp) 2 Fe + , Ag + , Na + and Li + , a nitrogen atom-containing compound such as pyridinium, 2,4-dinitro-N,N-diethylanilinium, diphenylammonium, p-nitroanilinium, 2,5-dichloroaniline, p-nitro-N,N-dimethylanilinum, quinolinium, N,N-dimethylanilinum and N,N-diethylanilinium; a carbenium compound such as triphenylcarbenium, tri(4-methylphenyl)carbenium and tri(4-methoxyphenyl)carbenium; an alkylphosphonium
- preferably usable compounds include, as the compound of the general formula (XII), triethylammonium tetraphenylborate, tri(n-butyl) ammonium tetraphenylborate, trimethylammonium tetraphenylborate, triethylammonium tetra(pentafluorophenyl)borate, tri(n-butyl)ammonium tetra(pentafluorophenyl)borate, triethylammonium hexafluoroarsenate, pyridinium tetra(pentafluorophenyl))borate, pyrrolinium tetra(pentafluorophenyl)borate, N,N-dimethylanilinium tetra(pentafluorophenyl)borate and methyldiphenylammonium t
- Methylaluminoxane may be used as the component (b) in addition to or in place of the coordination complex compound comprising an anion in which a plurality of radicals are bonded to a metal and a cation.
- R 21 and R 22 are each an alkyl group having 1 to 8, preferably 1 to 4 carbon atoms
- X is a hydrogen atom or a halogen atom
- the magnesium compound having an alkyl group represented by the general formula (XVI)
- R 21 is as previously defined
- R 21 is as previously defined; and the like.
- the aforesaid compounds each having an alkyl group are preferably aluminum compounds each having an alkyl group, more desirably trialkylaluminum compounds and dialkylaluminum compounds, and specifically exemplified by trialkylaluminum such as trimethylaluminum, triethylaluminum, tri-n-propylaluminum, triisopropylaluminum, tri-n-butylaluminum, triisobutylaluminum and tri-tert-butylaluminum; dialkylaluminum halide such as dimethylaluminum chloride, diethylaluminum chloride, di-n-propylaluminum chloride, diisopropylaluminum chloride, di-n-butylaluminum chloride, diisobutylaluminum chloride and di-tert-butylaluminum chloride; dialkylaluminum alkoxide such as dimethylaluminum methoxide and dimethyl
- the process according to the present invention comprises polymerizing a styrenic monomer by the use of the catalyst composed of the components (a), (b) and (c) and incorporating in the polymerization system, a (d) reaction product between a straight chain alkylaluminum having at least two carbon atoms in the alkyl group as represented by the general formula (XVIII) and water.
- R o is a straight chain alkyl group having 2 to 10, preferably 2 to 6 carbon atoms.
- alkylaluminum include triethylaluminum, tri-n-propylaluminum, tri-n-butylaluminum, tri-n-pentylaluminum, tri-n-hexylaluminum and tri-n-heptylaluminum.
- the water to be reacted with the straight chain alkylaluminum may be any of ice, water, steam, an organic solvent saturated with water and water of crystallization.
- the reaction product between such a straight chain alkylaluminum and water to be used in the present invention is obtained by reacting the above-mentioned straight chain alkylaluminum with water in a molar ratio of 1:(1 to 2) at a temperature of ⁇ 78° to 100° C. in a organic solvent without active hydrogen atom, and is represented by the general formula (XIX) or (XX)
- R o is as previously defined and n is an integer from 1 to 20.
- Specific examples of these compounds include ethylaluminoxane, propylaluminoxane, butylaluminoxane, pentylaluminoxane, hexylaluminoxane and heptylaluminoxane.
- the above-mentioned compound represented by the general formula (XIX) or (XX) has preferably n of 1 to 5 and may be used alone or in combination with at least one other one.
- the aforesaid components (a), (b), (c) and (d) may be added, separately one by one, to the monomer to be polymerized, or may be premixed with a solvent (aromatic hydrocarbon such as toluene, and ethylbenzene or aliphatic hydrocarbon such as hexane and heptane) prior to mixing with the monomer, in which the components (c) and (d) may totally or partly be added to the monomer.
- a solvent aromatic hydrocarbon such as toluene, and ethylbenzene or aliphatic hydrocarbon such as hexane and heptane
- the addition of the aforesaid components (a), (b), (c) and (d) to the monomer can be carried out at a temperature of 0° to 100° C., needless to say, at a polymerization temperature.
- the above-described catalyst along with the chain transfer agent exhibit a high activity in the production of a styrenic polymer having a high degree of syndiotactic configuration.
- the molecular weight of the resultant polymer can be lowered by the addition of the component (d), but the amount thereof to be added is not specifically limited, since it varies depending on the type of each of the components (a), (b), (c) and (d), the monomer species and polymerization conditions such as polymerization temperature.
- a styrenic monomer or monomers or a styrenic derivative or derivatives is homopolymerized or are copolymerized in the present of a catalyst composed mainly of the components (a), (b) and (c) and chain transfer agent of the component (d).
- styrenic monomer there is preferably used a compound represented by the general formula (XXI)
- R 23 is hydrogen atom, a halogen atom or a hydrocarbon group having 1 to 20 carbon atoms, m′ is an integer from 1 to 3 and, when m′ is 2 or greater, a plurality of R 23 may be the same or different.
- Examples of the compound of the general formula (XXI) include styrene; alkylstyrenes such as p-methylstyrene; m-methylstyrene; o-methylstyrene; 2,4-dimethylstyrene; 2,5-dimethylstyrene; 3,4-dimethylstyrene; 3,5-dimethylstyrene; and p-tertiary-butylstyrene; polyvinylbenzenes such as p-divinylbenzene; m-divinylbenzene; and trivinylbenzene; halogenated styrenes such as p-chlorostyrene; m-chlorostyrene; o-chlorostyrene; p-bromostyrene; m-bromostyrene; o-bromostyrene; p-fluorostyrene; m-fluorostyren
- the polymerization of the styrenic monomer or monomers may be carried out by means of bulk polymerization or solution polymerization by the use of an aliphatic hydrocarbon solvent such as pentane, hexane or heptane, an alicyclic hydrocarbon solvent such as cyclohexane or an aromatic hydrocarbon solvent such as benzene, toluene or xylene.
- the polymerization temperature is not specifically limited, but is usually in the range of 20° to 120° C., preferably 20° to 90° C.
- the polymerization reaction may be carried out in the presence of hydrogen in order to modify the molecular weight of the styrenic polymer to be produced.
- the styrenic polymer thus obtained possesses a high degree of syndiotactic configuration in its polymerization chain of the styrenic monomer.
- the styrenic polymer having a high degree of syndiotactic configuration in its polymerization chain of the styrenic monomer means that its stereochemical structure is mainly of syndiotactic configuration, i.e. the stereostructure in which phenyl groups or substituted phenyl group as side chains are located alternately at opposite directions relative to the main chain consisting of carbon-carbon bonds. Tacticity is quantitatively determined by the nuclear magnetic resonance method ( 13 C-NMR method) using carbon isotope.
- the tacticity as determined by the 13 C-NMR method can be indicated in terms of proportions of structural units continuously connected to each other, i.e., a diad in which two structural units are connected to each other, a triad in which three structural units are connected to each other and a pentad in which five structural unit are connected to each other.
- “-The styrenic polymers having a high degree of syndiotactic configuration” as mentioned in the present invention means polystyrene, poly(alkylstyrene), poly(halogenated styrene), poly(alkoxystyrene), poly(vinylbenzoate), the mixtures thereof, and copolymers containing the above polymers as main components, having such a syndiotacticity that the proportion of racemic diad is at least 75%, preferably at least 85%, or the proportion of racemic pentad is at least 30%, preferably at least 50%.
- the poly(alkylstyrene) includes poly(methylstyrene), poly(ethylstyrene) poly(isopropylstyrene), poly(tert-butylstyrene), etc.
- poly(halogenated styrene) includes poly(chlorostyrene), poly(bromostyrene), and poly(fluorostyrene), etc.
- the poly(alkoxystyrene) includes poly(methoxystyrene), poly(ethoxystyrene), etc.
- the most desirable styrenic polymers are polystyrene, poly(p-methylstyrene), poly(m-methylstyrene), poly(p-tert-butylstyrene), poly(p-chlorostyrene), poly(m-chlorostyrene), poly(p-fluorostyrene), and the copolymer of styrene and p-methylstyrene.
- the process according to the present invention makes it possible to attain a high activity in the production of a styrenic polymer having a high degree of syndiotactic configuration, decrease the amount of the residual metals in the resultant styrenic polymer without deterioration of the catalytic activity by the use of a reaction product between the specific straight chain alkylaluminum and water, and at the same time, to simplify the production process of the styrenic polymer and curtail the production cost thereof.
- Example 1 (2) The procedure in Example 1 (2) was repeated to obtain 2.87 g of a polymer except that the addition amount of 0.28 mol/L of ethylaluminoxane was set on 90 ⁇ L in place of 45 ⁇ L.
- the resultant polymer was subjected to Soxhlet extraction for 6 hours by the use of methyl ethyl ketone (MEK) as the solvent to produce MIP.
- MEK methyl ethyl ketone
- objective SPS having a molecular weight of 240,000 was obtained in a yield of 2.80 g with a raffinate (MIP) rate of 97.6% and an activity for SPS of 117 kg/g-Ti.
- Example 1 (2) The procedure in Example 1 (2) was repeated to obtain 2.87 g of a polymer except that there was used n-butylaluminoxane which had been prepared in the same manner as in Example 1 (1) in place of ethylaluminoxane.
- the resultant polymer was subjected to Soxhlet extraction for 6 hours by the use of methyl ethyl ketone (MEK) as the solvent to produce MIP.
- MEK methyl ethyl ketone
- objective SPS having a molecular weight of 350,000 was obtained in a yield of 2.81 g with a raffinate (MIP) rate of 97.9% and an activity for SPS of 117 kg/g-Ti.
- Example 1 (2) The procedure in Example 1 (2) was repeated to obtain a polymer except that there was used n-propylaluminoxane which had been prepared in the same manner as in Example 1 (1) in place of ethylaluminoxane.
- the resultant polymer was subjected to Soxhlet extraction for 6 hours by the use of methyl ethyl ketone (MEK) as the solvent to produce MIP.
- MEK methyl ethyl ketone
- objective SPS having a molecular weight of 340,000 was obtained with a raffinate (MIP) rate of 95% and an activity for SPS of 120 kg/g-Ti.
- Example 1 (2) The procedure in Example 1 (2) was repeated to obtain a polymer except that there was used ferrocenium tetra(pentafluorenyl)borate in place of dimethylanilinium tetra(pentafluorenyl)borate.
- the resultant polymer was subjected to Soxhlet extraction for 6 hours by the use of methyl ethyl ketone (MEK) as the solvent to produce MIP.
- MEK methyl ethyl ketone
- objective SPS having a molecular weight of 320,000 was obtained with a raffinate (MIP) rate of 95% and an activity for SPS of 122 kg/g-Ti.
- Example 1 (2) The procedure in Example 1 (2) was repeated to obtain a polymer except that there was used tri-n-butylaluminum in place of triisobutylaluminum.
- the resultant polymer was subjected to Soxhlet extraction for 6 hours by the use of methyl ethyl ketone (MEK) as the solvent to produce MIP.
- MEK methyl ethyl ketone
- objective SPS having a molecular weight of 310,000 was obtained with a raffinate (MIP) rate of 95% and an activity for SPS of 119 kg/g-Ti.
- Example 1 (2) The procedure in Example 1 (2) was repeated to obtain a polymer except that ethylaluminoxane was not used.
- the resultant polymer was subjected to Soxhlet extraction for 6 hours by the use of methyl ethyl ketone (MEK) as the solvent to produce MIP.
- MEK methyl ethyl ketone
- objective SPS having a molecular weight of 871,000 was obtained in a yield of 2.69 g with a raffinate (MIP) rate of 95.5% and an activity for SPS of 112 kg/g-Ti.
- Example 1 (2) The procedure in Example 1 (2) was repeated except that 4.0 mL of 1.6 mol/L of methylaluminoxane solution was used in place of 64 mg of dimethylanilinium tetra(pentafluorophenyl)borate.
- objective SPS having a molecular weight of 340,000 was obtained in a yield of 3.25 g with a raffinate (MIP) rate of 96.4% and an activity for SPS of 138 kg/g-Ti.
- MIP raffinate
- Example 1 (2) The procedure in Example 1 (2) was repeated except that 0.5 mmol of butylethylmagnesium was used in place of 0.4 mL of 2 mol/L of triisobutylaluminum and 4.0 mL of 1.6 mol/L of methylaluminoxane solution was used in place of 64 mg of dimethylanilinium tetra(pentafluorophenyl)borate.
- object SPS having a molecular weight of 370,000 was obtained in a yield of 2.25 g with a raffinate (MIP) rate of 94.4% and an activity for SPS of 93 kg/g-Ti.
- MIP raffinate
- Example 1 (2) The procedure in Example 1 (2) was repeated except that 1.0 mL of 2.0 mol/L of trimethylaluminum solution was used in place of 64 mg of dimethylanilinium tetra(pentafluorophenyl)borate.
- objective SPS having a molecular weight of 270,000 was obtained in a yield of 0.95 g with a raffinate (MIP) rate of 90.5% and an activity for SPS of 38 kg/g-Ti.
- MIP raffinate
Abstract
There is disclosed a process for producing a styrenic polymer, especially, syndiotactic polystyrene, which comprises polymerizing a styrenic monomer by the use of (a) a transition metal compound, (b) a coordination complex compound comprising an anion in which a plurality of radicals are bonded to a metal and a cation or methylaluminoxane, (c) an alkylating agent (alkyl group-containing aluminum, magnesium or zinc compound) and (d) a reaction product between a straight-chain alkylaluminum having at least two carbon atoms and water (alkylaluminoxane). The above process is capable of simplifying the production process and producing high-performance styrenic polymer having a high degree of syndiotactic configuration in high catalytic activity without deteriorating the catalyst activity, increasing the amounts of residual metals in the objective polymer or leaving the decomposition products of the alkylaluminum therein, thereby curtailing the production cost of the objective polymer.
Description
This application is a continuation-in-part of application Ser. No. 08/413,224, filed Mar. 30, 1995, now U.S. Pat. No. 5,596,055.
1. Field of the Invention
The present invention relates to a process for producing a styrenic polymer. More particularly, it pertains to a process for producing a styrenic polymer having a high degree of syndiotactic configuration efficiently and inexpensively.
2. Description of the Related Arts
In recent years, a process for producing a styrenic polymer having a syndiotactic configuration (hereinafter sometimes referred to as “SPS”) by polymerizing a styrenic monomer by means of a catalyst comprising a transition metal compound as a primary ingredient, especially a titanium compound and methylaluminoxane (refer to Japanese Patent Application Laid-Open No. 187708/1987) has been proposed.
There has also been proposed a process for efficiently producing such a styrenic polymer (SPS) by the use of a catalyst comprising a coordination complex compound composed of an anion in which a plurality of radicals are bonded to a metal and a cation, while dispensing with an aluminoxane which is expensive and is to be used in a large amount (refer to Japanese Patent Application Laid-Open Nos. 415573/1990, 415574/1990, etc.)
In the case of polymerizing a styrenic monomer by the use of the above-mentioned catalyst, there has heretofore been employed an alkylaluminum as a chain transfer agent for the purpose of modifying the molecular weight of the objective polymer. However, this method involves the problems that the catalytic activity deteriorates resulting in an increase in the amounts of residual metals contained in the styrenic polymer thus produced, allowing the decomposed product of an alkylaluminum to remain in the objective polymer. Even in the case of raising the polymerization temperature, the deterioration of the catalytic activity increases the amount of residual metals in the objective polymer. The aforesaid situation calls for the development of a process capable of producing a styrenic polymer of high performance at a low cost, while enabling a decrease in the molecular weight of the resultant polymer and simplifying the process itself without deteriorating the catalytic activity.
As a result of intensive research and investigation made by the present inventors under such circumstances, it has been found that in the case of polymerizing a styrenic monomer by the use of a transition metal compound, a coordination complex compound composed of an anion in which a plurality of radicals are bonded to a metal and a cation, or methylaluminoxane, and an alkylating agent as principal components, the use of a reaction product between a straight-chain alkylaluminum having at least two carbon atoms and water can lower the molecular weight of the resultant polymer without deteriorating the catalytic activity. The present invention has been accomplished on the basis of the above-mentioned finding and information.
Specifically, the present invention provides a process for producing a styrenic polymer which comprises polymerizing a styrenic monomer by the use of (a) a transition metal compound, (b) a coordination complex compound comprising an anion in which a plurality of radicals are bonded to a metal and a cation, or methylaluminoxane, (c) an alkylating agent and (d) a reaction product between a straight chain alkylaluminum having at least two carbon atoms and water.
As an (a) transition metal compound usable in the process of the present invention, mention may be made of a variety of compounds, usually the compound represented by the general formula (I) or (II)
wherein M is a metal belonging to any of the groups 3 to 6 of the Periodic Table or a lanthanum series metal; R1, R2, R3 and R4 are each an alkyl group, an alkoxyl group, an aryl group, a cyclopentadienyl group, an alkylthio group, a substituted cyclopentadienyl group, an indenyl group, a substituted indenyl group, a fluorenyl group, a halogen atom or a chelating agent; a, b and c are each an integer of from 0 to 4; d and e are each an integer of from 0 to 3; and any two of R1 to R4 may form a complex which is crosslinked with CH2, Si(CH3)2 or the like.
As a metal belonging to any of the groups 3 to 6 of the Periodic Table or a lanthanum series metal as indicated by M, there are preferably employed the group 4 metals, especially titanium, zirconium, hafnium and the like.
Various titanium compounds can be used and a preferred example is at least one compound selected from the group consisting of titanium compounds and titanium chelate compounds represented by the general formula (III) or (IV):
wherein R5, R6, R7 and R8 are each a hydrogen atom, an alkyl group having 1 to 20 carbon atoms, an alkoxyl group having 1 to 20 carbon atoms, an aryl group having 6 to 20 carbon atoms, an alkylaryl group, an arylalkyl group, an acyloxyl group having 1 to 20 carbon atoms, a cyclopentadienyl group, a substituted cyclopentadienyl group, an indenyl group, a substituted indenyl group, a fluorenyl group, an alkylthio group, an arylthio group, a chelating agent, an amino group, an amide group, a phosphorus-containing group or a halogen atom; a, b and c are each an integer from 0 to 4; a and e are each an integer from 0 to 3; and any two of R5 to R8 may form a complex which is crosslinked with CH2, Si(CH3)2 or the like.
R5, R6, R7 and R8 in the general formulae (III) and (IV) each represent a hydrogen atom, an alkyl group having 1 to 20 carbon atoms (specifically, methyl group, ethyl group, propyl group, butyl group, amyl group, isoamyl group, isobutyl group, octyl group and 2-ethylhexyl group), an alkoxyl group having 1 to 20 carbon atoms (specifically, methoxyl group, ethoxyl group, propoxyl group, butoxyl group, amyloxyl group, hexyloxyl group, and 2-ethylhexyloxyl group), an aryl group having 6 to 20 carbon atoms, an alkylaryl group, an arylalkyl group (specifically, phenyl group, tolyl group, xylyl group and benzyl group), an acyloxyl group having 1 to 20 carbon atoms (specifically, heptadecylcarbonyloxy group), a cyclopentadienyl group, a substituted cyclopentadienyl group (specifically, methylcyclopentadienyl group, 1,2-dimethylcyclopentadienyl group, pentamethylcyclopentadienyl group and 4,5,6,7-tetrahydro-1,2,3-trimethylindenyl group), an indenyl group, a substituted indenyl group (specifically, methylindenyl group, dimethylindenyl group, tetramethylindenyl group and hexamethylindenyl group), a fluorenyl group, (specifically, methylfluorenyl group, dimethylfluorenyl group, tetramethylfluorenyl group and octamethylfluorenyl group), an alkylthio group (specifically, methylthio group, ethylthio group, butylthio group, amylthio group, isoamylthio group, isobutylthio group, octylthio group and 2-ethylhexylthio group), an arylthio group (specifically, phenylthio group, p-methylphenylthio group and p-methoxyphenylthio group), a chelating agent (specifically, 2,21-thiobis (4-methyl-6-tert-butylphenyl) group, or a halogen atom (specifically, chlorine, bromine, iodine and fluorine). These R5, R6, R7, R8 may be the same as or different from each other.
More desirable titanium compounds include a titanium compound represented by the formula (V)
wherein R represents a cyclopentadienyl group, a substituted cyclopentadienyl group, an indenyl group, a substituted indenyl group, a fluorenyl group, or the like; X, Y, and Z, independently of one another, are a hydrogen atom, an alkyl group having 1 to 12 carbon atoms, an alkoxyl group having 1 to 12 carbon atoms, an aryl group having 6 to 20 carbon atoms, an aryloxyl group having 6 to 20 carbon atoms, an arylalkyl group having 6 to 20 carbon atoms, an alkyl- or arylamide group having 1 to 40 carbon atoms or a halogen atom. Here, any one of X, Y and Z and R may form a compound which is crosslinked with CH2, SiR2 or the like.
The substituted cyclopentadienyl group represented by R in the above formula is, for example, a cyclopentadienyl group substituted by at least one of an alkyl group having 1 to 6 carbon atoms, more specifically, methylcyclopentadienyl group, 1,2-dimethylcyclopentadienyl group, 1,2,4-trimethylcyclopentadienyl group, 1,2,3,4-tetramethylcyclopentadienyl group, trimethylsilylcyclopentadienyl group, 1,3-di(trimethylsilyl) cyclopentadienyl group, tert-butylcyclopentadienyl group, 1,3-di(tert-butyl)cyclopentadienyl group, pentamethylcyclopentadienyl group or the like. In addition, X, Y, and Z are each independently a hydrogen atom, an alkyl group having 1 to 12 carbon atoms (specifically, methyl group, ethyl group, propyl group, n-butyl group, isobutyl group, amyl group, isoamyl group, octyl group and 2-ethylhexyl group), an alkoxyl group having 1 to 12 carbon atoms (specifically, methoxyl group, ethoxyl group, propoxyl group, butoxyl group, amyloxyl group, hexyloxyl group, octyloxyl group and 2-ethylhexyloxyl group), an aryl group having 6 to 20 carbon atoms (specifically, phenyl group and naphthyl group), an aryloxyl group having 6 to 20 carbon atoms (specifically, phenoxyl group), an arylalkyl group having 6 to 20 carbon atoms (specifically, benzyl group), an alkyl- or arylamide group having 1 to 40 carbon atoms (specifically, dimethylamide group, diethylamide group, diphenylamide group and methylphenylamide group) or a halogen atom (specifically, chlorine, bromine, iodine and fluorine).
Specific examples of the titanium compound represented by the general formula (V) include cyclopentadienyltrimethyltitanium, cyclopentadienyltriethyltitanium, cyclopentadienyltripropyltitanium, cyclopentadienyltributyltitanium, methylcyclopentadienyltrimethyltitanum, 1,2-dimethylcyclopentadienyltrimethyltitanium, 1,2,4-trimethylcyclopentadienyltrimethyltitanium, 1,2,3,4-tetramethylcyclopentadienyltrimethyltitanium, pentamethylcyclopentadienyltrimethyltitanium, pentamethylcyclopentadienyltriethyltitanium, pentamethylcyclopentadienyltripropyltitanium, pentamethylcyclopentadienyltributyltitanium, cyclopentadienylmethyltitanium dichloride, cyclopentadienylethyltitanium dichloride, pentamethylcyclopentadienylmethyltitanium dichloride, pentamethylcyclopentadienylethyltitanium dichloride, cyclopentadienyldimethyltitanium monochloride, cyclopentadienyldiethyltitanium monochloride, cyclopentadienyltitanium trimethoxide, cyclopentadienyltitanium triethoxide, cyclopentadienyltitanium tripropoxide, cyclopentadienyltitanium triphenoxide, pentamethylcyclopentadienyltitanium trimethoxide, pentamethylcyclopentadienyltitanium triethoxide, pentamethylcyclopentadienyltitanium tripropoxide, pentamethylcyclopentadienyltitanium tributoxide, pentamethylcyclopentadienyltitanium triphenoxide, cyclopentadienyltitanium trichloride, pentamethylcyclopentadienyltitanium trichloride, cyclopentadienylmethoxyltitanium dichloride, cyclopentadienyldimethoxytitanium chloride, pentamethylcyclopentadienylmethoxytitanium dichloride, cyclopentadienyltribenzyltitanium, pentamethylcyclopentadienylmethyldiethoxytitanium, indenyltitanium trichloride, indenyltitanium trimethoxide, indenyltitanium triethoxide, indenyltrimethyltitanium, indenyltribenzyltitanium, (tert-butylamide)dimethyl (tetramethyl η5-cyclopentadienyl)silanetitanium dichloride, (tert-butylamide)dimethyl)tetramethyl η5-cyclopentadienyl) silanetitanium and (tert-butylamide)dimethyl(tetramethyl η5-cyclopentadienyl)silanetitanium dimethoxide.
Of these titanium compounds, a compound not containing a halogen atom is preferred and a titanium compound having one π electron type ligand is particularly desirable.
Furthermore, a condensed titanium compound represented by the general formula (VI) may be used as the titanium compound.
wherein R9 and R10 each represent a halogen atom, an alkoxyl group having 1 to 20 carbon atoms or an acyloxyl group; and k is an integer from 2 to 20.
Furthermore, the above titanium compounds may be used in the form of a complex formed with an ester, an ether or the like.
The trivalent titanium compound represented by the formula (VI) typically includes a trihalogenatd titanium such as titanium trichloride; and a cyclopentadienyltitanium compound such as cyclopentadienyltitanium dichloride, and also those obtained by reducing a tetravalent titanium compound. These trivalent titanium compounds may be used in the form of a complex formed with an ester, an ether or the like.
In addition, examples of the zirconium compound used as the transition metal compound include tetrabenzylzirconium, zirconium tetraethoxide, zirconium tetrabutoxide, bisindenylzirconium dichloride, triisopropoxyzirconium chloride, zirconium benzyldichloride and tributoxyzirconium chloride. Examples of the hafnium compound include tetrabenzylhafnium, hafnium tetraethoxide and hafnium tetrabutoxide. Examples of the vanadium compound include vanadyl bisacetylacetonato, vanadyl triacetylacetonato, vanadyl triethoxide and vanadyl tripropoxide. Of these transition metal compounds, the titanium compounds are particularly suitable.
Aside from the foregoing, the transition metal compounds constituting the component (a) include the transition metal compound with two ligands having conjugated π electrons, for example, at least one compound selected from the group consisting of the transition metal compounds represented by the general formula:
wherein M1 is titanium, zirconium or hafnium; R11 and R12 are each a cyclopentadienyl group, substituted cyclopentadienyl group, indenyl group or fluorenyl group and R13 and R14 are each a hydrogen atom, a halogen atom, a hydrocarbon group having 1 to 20 carbon atoms, an alkoxyl group having 1 to 20 carbon atoms, an amino group or thioalkoxyl group having 1 to 20 carbon atoms, but R11 and R12 may be each crosslinked by a hydrocarbon group having 1 to 5 carbon atoms, alkylsilyl group having 1 to 20 carbon atoms and 1 to 5 silicon atoms or germanium-containing hydrocarbon group having 1 to 20 carbon atoms and 1 to 5 germanium atoms.
In more detail, each of R11 and R12 in the general formula (VII) designates a cyclopentadienyl group, substituted cyclopentadienyl group, more specifically, methylcyclopentadienyl group; 1,3-dimethylcyclopentadienyl group; 1,2,4-trimethylcyclopentadienyl group; 1,2,3,4-tetramethylcyclopentadienyl group; pentamethylcyclopentadienyl group; trimethylsilylcyclopentadienyl group; 1,3-di(trimethylsilyl)cyclopentadienyl group; 1,2,4-tri(trimethylsilyl)cyclopentadienyl group; tert-butylcyclopentadienyl group; 1,3-di(tert-butyl) cyclopentadienyl group; 1,2,4-tri(tert-butyl) cyclopentadienyl group or the like, indenyl group, substituted indenyl group, more specifically, methylindenyl group; dimethylindenyl group; trimethylindenyl group or the like, fluorenyl group, or substituted fluorenyl group such as methylfluorenyl group, and may be the same or different and crosslinked by an alkylidene group having 1 to 5 carbon atoms, more specifically, methine group; ethylidene group; propylidene group; dimethylcarbyl group or the like, or an alkylsilyl group having 1 to 20 carbon atoms and 1 to 5 silicon atoms, more specifically, dimethylsilyl group; diethylsilyl group; dibenzylsilyl group or the like. Each of R13 and R14 independently indicates, as described above but more specifically, a hydrogen atom; an alkyl group having 1 to 20 carbon atoms such as methyl group, ethyl group, propyl group, n-butyl group, isobutyl group, amyl group, isoamyl group, octyl group or 2-ethylhexyl group; an aryl group having 6 to 20 carbon atoms such as phenyl group or naphthyl group; an arylalkyl group having 7 to 20 carbon atoms such as benzyl group; an alkoxyl group having 1 to 20 carbon atoms such as methoxyl group, ethoxyl group, propoxyl group, butoxyl group, amyloxyl group, hexyloxyl group, octyloxyl group or 2-ethylhexyloxyl group; an aryloxyl group having 6 to 20 carbon atoms such as phenoxyl group; an amino group; or a thioalkoxyl group having 1 to 20 carbon atoms.
Specific examples of the transition metal compounds represented by the general formula (VII) wherein M1 is titanium include bis(cyclopentadienyl)dimethyltitanium; bis(cyclopentadienyl)diethyltitanium; bis(cyclopentadienyl)dipropyltitanium; bis(cyclopentadienyl)dibutyltitanium; bis(methylcyclopentadienyl)dimethyltitanium; bis(tert-butylcyclopentadienyl)dimethyltitanium; bis(1,3-dimethylcyclopentadienyl)dimethyltitanium; bis(1,3-di-tert-butylcyclopentadienyl)dimethyltitanium; bis(1,2,4-trimethylcyclopentadienyl)dimethyltitanium; bis(1,2,3,4-tetramethylcyclopentadienyl)dimethyltitanium; bis(cyclopentadienyl)dimethyltitanium; bis(trimethylsilylcyclopentadienyl)dimethyltitanium; bis(1,3-di(trimethylsilyl)cyclopentadienyl)dimethyltitanium; bis(1,2,4-tris(trimethylsilyl)cyclopentadienyl)dimethyltitanium; bis(indenyl)dimethyltitanium; bis(fluorenyl)dimethyltitanium; methylenebis(cyclopentadienyl)dimethyltitanium; ethylidenebis(cyclopentadienyl)dimethyltitanium; methylenebis(2,3,4,5-tetramethylcyclopentadienyl)dimethyltitanium; ethylidenebis(2,3,4,5-tetramethylcyclopentadienyl)dimethyltitanium; dimethylsilylbis(2,3,4,5-tetramethylcyclopentadienyl)dimethyltitanium; methylenebisindenyldimethyltitanium; ethylidenebisindenyldimethyltitanium; dimethylsilylbisindenyldimethyltitanium; methylenebisfluorenyldimethyltitanium; ethylidenebisfluorenyldimethyltitanium; dimethylsilylbisfluorenyldimethyltitanium; methylene(tert-butylcyclopentadienyl)(cyclopentadienyl)dimethyltitanium; methylene(cyclopentadienyl)(indenyl)dimethyltitanium; ethylidene(cyclopentadienyl)(indenyl)dimethyltitanium; dimethylsilyl(cyclopentadienyl)(indenyl)dimethyltitanium; methylene(cyclopentadienyl)(fluorenyl)dimethyltitanium; ethylidene(cyclopentadienyl)(fluorenyl)dimethyltitanium; dimethylsilyl(cyclopentadienyl)(fluorenyl)dimethyltitanium; methylene(indenyl)(fluorenyl)dimethyltitanium; ethylidene(indenyl)(fluorenyl)dimethyltitanium; dimethylsilyl(indenyl)(fluorenyl)dimethyltitanium; bis(cyclopentadienyl)dibenzyltitanium; bis(tert-butylcyclopentadienyl)dibenzyltitanium; bis(methylcyclopentadienyl)dibenzyltitanium; bis(1,3-dimethylcyclopentadienyl)dibenzyltitanium; bis(1,2,4-trimethylcyclopentadienyl)dibenzyltitanium; bis(1,2,3,4-tetramethylcyclopentadienyl)dibenzyltitanium; bis(pentamethylcyclopentadienyl)dibenzyltitanium; bis(trimethylsilylcyclopentadienyl)dibenzyltitanium; bis[1,3-di-(trimethylsilyl)cyclopentadienyl]dibenzyltitanium; bis[1,2,4-tris(trimethylsilyl)cyclopentadienyl]dibenzyltitanium; bis(indenyl)dibenzyltitanium; bis(fluorenyl)dibenzyltitanium; methylenebis(cyclopentadienyl)dibenzyltitanium; ethylidenebis(cyclopentadienyl)dibenzyltitanium; methylenebis(2,3,4,5-tetramethylcyclopentadienyl)dibenzyltitanium; ethylidenebis(2,3,4,5-tetramethylcyclopentadienyl)dibenzyltitanium; dimethylsilylbis(2,3,4,5-tetramethylcyclopentadienyl)dibenzyltitanium; methylenebis(indenyl)dibenzyltitanium; ethylidenebis(indenyl)dibenzyltitanium; dimethylsilylbis(indenyl)dibenzyltitanium; methylenebis(fluorenyl)dibenzyltitanium; ethylidenebis(fluorenyl)dibenzyltitanium; dimethylsilylbis(fluorenyl)dibenzyltitanium; methylene(cyclopentadienyl)(indenyl)dibenzyltitanium; ethylidene(cyclopentadienyl)(indenyl)dibenzyltitanium; dimethylsilyl(cyclopentadienyl)(indenyl)dibenzyltitanium; methylene(cyclopentadienyl)(fluorenyl)dibenzyltitanium; ethylidene(cyclopentadienyl)(fluorenyl)dibenzyltitanium; dimethylsilyl(cyclopentadienyl)(fluorenyl)dibenzyltitanium; methylene(indenyl)(fluorenyl)dibenzyltitanium; ethylidene(indenyl)(fluorenyl)dibenzyltitanium; dimethylsilyl(indenyl)(fluorenyl)dibenzyltitanium; biscyclopentadienyltitanium dimethoxide; biscyclopentadienyltitanium diethoxide; biscyclopentadienyltitanium dipropoxide; biscyclopentadienyltitanium dibutoxide; biscyclopentadienyltitanium dipheoxide; bis(methylcyclopentadienyl)titanium dimethoxide; bis(1,3-dimethylcyclopentadienyl)titanium dimethoxide; bis(1,2,4-trimethylcyclopentadienyl)titanium dimethoxide; bis(1,2,3,4-tetramethylcyclopentadienyl)titanium dimethoxide; bispentamethylcyclopentadienyltitanium dimethoxide; bis(trimethylsilylcyclopentadienyl)titanium dimethoxide; bis[1,3-di(trimethylsilyl)cyclopentadienyl]titanium dimethoxide; bis [1,2,4-tri(trimethylsilyl)cyclopentadienyl]titanium dimethoxide; bisindenyltitanium dimethoxide; bisfluorenyltitanium dimethoxide; methylenebiscyclopentadienyltitanium dimethoxide; ethylidenebiscyclopentadienyltitanium dimethoxide; methylenebis(2,3,4,5-tetramethylcyclopentadienyl)titanium dimethoxide; ethylidenebis(2,3,4,5-tetramethylcyclopentadienyl)titanium dimethoxide; dimethylsilylenebis(2,3,4,5-tetramethylcyclopentadienyl)titanium dimethoxide; methylenebisindenyltitanium dimethoxide; methylenebis(methylindenyl)titanium dimethoxide; ethylidenebisindenyltitanium dimethoxide; dimethylsilylbisindenyltitanium dimethoxide; methylenebisfluorenyltitanium dimethoxide; methylenebis(methylfluorenyl)titanium dimethoxide; ethylidenebisfluorenyltitanium dimethoxide; dimethylsilylbisfluorenyltitanium dimethoxide; methylene (cyclopentadienyl)(indenyl)titanium dimethoxide; ethylidene(cyclopentadienyl)(indenyl)titanium dimethoxide; dimethylsilyl(cyclopentadienyl)(indenyl)titanium dimethoxide; methylene(cyclopentadienyl)(fluorenyl)titanium dimethoxide; ethylidene(cyclopentadienyl)(fluorenyl)titanium dimethoxide; dimethylsilyl(cyclopentadienyl)(fluorenyl)titanium dimethoxide; methylene(indenyl)(fluorenyl)titanium dimethoxide; ethylidene(indenyl)(fluorenyl)titanium dimethoxide; and dimethylsilyl(indenyl)(fluorenyl)titanium dimethoxide.
Examples of the transition metal compounds represented by the formula (VII) wherein M1 is zirconium include ethylidenebiscyclopentadienylzirconium dimethoxide and dimethylsilylbiscyclopentadienylzirconium dimethoxide. Examples of the hafnium compounds according to the general formula (VII) include ethylidenebiscyclopentadienylhafnium dimethoxide, dimethylsilylbiscyclopentadienylhafnium dimethoxide, etc. Particularly desirable transition metal compounds among them are titanium compounds. In addition to the combinations of the above, the compound may be a bidentate coordination complex compound such as 2,2′-thiobis-(4-methyl-6-tert-butylphenyl)titanium diisopropoxide; 2,2′-thiobis(4-methyl-6-tert-butylphenyl)titanium dimethoxide or the like.
As the transition metal compound of the component (a) usable in the present invention, there is available at least one compound selected from the group consisting of the transition metal compounds having the constitution represented by the general formula (VIII)
wherein R is, as a π ligand, a fused polycyclic cyclopentadienyl group wherein at least one of many-membered rings to which cyclopentadienyl groups are fusedly bonded is a saturated ring, M is as previously defined, X′ is a σ ligand, a plurality of X′ may be the same or different and bonded to each other through an arbitrary group, L1 is a Lewis base, p is the valency of M, q is 0, 1 or 2 and when L1 is plural, each L1 may be the same or different. The above-mentioned fused polycyclic cyclopentadienyl group is exemplified by that selected from those represented by any one of the general formulae (IX) to (XI)
wherein R15, R16 and R17 are each a hydrogen atom, a hydrogen atom, a halogen atom, an aliphatic hydrocarbon group having 1 to 20 carbon atoms, an aromatic hydrocarbon group having 6 to 20 carbon atoms, an alkoxyl group having 1 to 20 carbon atoms, an aryloxyl group having 6 to 20 carbon atoms, a thioalkoxyl group having 1 to 20 carbon atoms, a thioaryloxyl group having 6 to 20 carbon atoms, an amino group, an amide group, a carboxyl group or an alkylsilyl group and may be the same as or different from each other; and w, x, y and z are each an integer of 1 or greater. Of these, 4,5,6,7-tetrahydroindenyl group is preferable from the viewpoint of catalytic activity and the ease of its synthesis.
Specific examples of R′ include 4,5,6,7-tetrahydroindenyl group; 1-methyl-4,5,6,7-tetrahydroindenyl group; 2-methyl-4,5,6,7-tetrahydroindenyl group; 1,2-dimethyl-4,5,6,7-tetrahydroindenyl group; 1,3-dimethyl-4,5,6,7-tetrahydroindenyl group; 1,2,3-trimethyl-4,5,6,7-tetrahydroindenyl group; 1,2,3,4,5,6,7-heptamethyl-4,5,6,7-tetrahydroindenyl group; 1,2,4,5,6,7-hexamethyl-4,5,6,7-tetrahydroindenyl group; 1,3,4,5,6,7-hexamethyl-4,5,6,7-tetrahydroindenyl group; octahydrofluorenyl group; 1,2,3,4-tetrahydrofluorenyl group; 9-methyl-1,2,3,4-tetrahydrofluorenyl group; and 9-methyl-octahydrofluorenyl group.
M is a Group 3 to 6 metal or a lanthanoids metal and exemplified by titanium, zirconium, hafnium, lanthanoids, niobium and tantalum. Of these titanium is preferable from the viewpoint of catalytic activity. X′ is a σ ligand and is exemplified by a hydrogen atom, a halogen atom, an aliphatic hydrocarbon group having 1 to 20 carbon atoms, an aromatic hydrocarbon group having 6 to 20 carbon atoms, an alkoxyl group having 1 to 20 carbon atoms, an aryloxyl group having 6 to 20 carbon atoms, a thioalkoxyl group having 1 to 20 carbon atoms, a thioaryloxyl group having 6 to 20 carbon atoms, an amino group, an amide group, a carboxyl group or an alkylsilyl group, and a plurality of X′ may be the same or different and bonded to each other through an arbitrary group. Further, X′ is specifically exemplified by hydrogen atom, chlorine atom, bromine atom, iodine atom, methyl group, benzyl group, phenyl group, trimethylsilylmethyl group, methoxy group, ethoxy group, phenoxy group, thiomethoxy group, thiophenoxy group, dimethylamino group and diisopropylamino group. L1 is a Lewis base, p is the valency of M and q is 0, 1 or 2.
As the transition metal compound represented by the general formula (VIII), there can preferably be employed a compound comprising R′ and X′ each arbitrarily selected from the above-exemplified groups.
The transition metal compound represented by the general formula (I) is specifically exemplified by but not limited to 4,5,6,7-tetrahydroindenyltitanium trichloride; 4,5,6,7-tetrahydroindenyltrimethyltitanium; 4,5,6,7-tetrahydroindenyltribenzyltitanium; 4,5,6,7-tetrahydroindenyltitanium trimethoxide; 1-methyl-4,5,6,7-tetrahydroindenyltitanium trichloride; 1-methyl-4,5,6,7-tetrahydroindenyltrimethyltitanium; 1-methyl-4,5,6,7-tetrahydroindenyltribenzyltitanium; 1-methyl-4,5,6,7-tetrahydroindenyltitanium trimethoxide; 2-methyl-4,5,6,7-tetrahydroindenyltitanium trichloride; 2-methyl-4,5,6,7-tetrahydroindenyltrimethyltitanium; 2-methyl-4,5,6,7-tetrahydroindenyltribenzyltitanium; 2-methyl-4,5,6,7-tetrahydroindenyltitanium trimethoxide; 1,2-dimethyl-4,5,6,7-tetrahydroindenyltitanium trichloride; 1,2-dimethyl-4,5,6,7-tetrahydroindenyltrimethyltitanium; 1,2-dimethyl-4,5,6,7-tetrahydroindenyltribenzyltitanium; 1,2-dimethyl-4,5,6,7-tetrahydroindenyltitanium trimethoxide; 1,3-dimethyl-4,5,6,7-tetrahydroindenyltitanium trichloride; 1,3-dimethyl-4,5,6,7-tetrahydroindenyltrimethyltitanium; 1,3-dimethyl-4,5,6,7-tetrahydroindenyltribenzyltitanium; 1,3-dimethyl-4,5,6,7-tetrahydroindenyltitanium trimethoxide; 1,2,3-trimethyl-4,5,6,7-tetrahydroindenyltitanium trichloride; 1,2,3-trimethyl-4,5,6,7-tetrahydroindenyltrimethyltitanium; 1,2,3-trimethyl-4,5,6,7-tetrahydroindenyltribenzyltitanium; 1,2,3-trimethyl-4,5,6,7-tetrahydroindenyltitanium trimethoxide; 1,2,3,4,5,6,7-heptamethyl-4,5,6,7-tetrahydroindenyltitanium trichloride; 1,2,3,4,5,6,7-heptamethyl-4,5,6,7-tetrahydroindenyltrimethyltitanium; 1,2,3,4,5,6,7-heptamethyl-4,5,6,7-tetrahydroindenyltribenzyltitanium; 1,2,3,4,5,6,7-heptamethyl-4,5,6,7-tetrahydroindenyltitanium trimethoxide; 1,2,4,5,6,7-hexamethyl-4,5,6,7-tetrahydroindenyltitanium trichloride; 1,2,4,5,6,7-hexamethyl-4,5,6,7-tetrahydroindenyltrimethyltitanium; 1,2,4,5,6,7-hexamethyl-4,5,6,7-tetrahydroindenyltribenzyltitanium; 1,2,4,5,6,7-hexamethyl-4,5,6,7-tetrahydroindenyltitanium trimethoxide; 1,3,4,5,6,7-hexamethyl-4,5,6,7-tetrahydroindenyltitanium trichloride; 1,3,4,5,6,7-hexamethyl-4,5,6,7-tetrahydroindenyltitanium trichloride; 1,3,4,5,6,7-hexamethyl-4,5,6,7-tetrahydroindenyltrimethyltitanium; 1,3,4,5,6,7-hexamethyl-4,5,6,7-tetrahydroindenyltribenzyltitanium; 1,3,4,5,6,7-hexamethyl-4,5,6,7-tetrahydroindenyltitanium trimethoxide; octahydrofluorenyltitanium trichloride; octahydrofluorenyltrimethyltitanium; octahydrofluorenyltribenzyltitanium; octahydrofluorenyltitanium trimethoxide; 1,2,3,4-tetrahydrofluorenyltitanium trichloride; 1,2,3,4-tetrahydrofluorenyltrimethyltitanium; 1,2,3,4-tetrahydrofluorenyltribenzyltitanium; 1,2,3,4-tetrahydrofluorenyltitanium trimethoxide; 9-methyl-1,2,3,4-tetrahydrofluorenyltitanium trichloride; 9-methyl-1,2,3,4-tetrahydrofluorenyltrimethyltitanium; 9-methyl-1,2,3,4-tetrahydrofluorenyltribenzyltitanium; 9-methyl-1,2,3,4-tetrahydrofluorenyltitanium trimethoxide; 9-methyloctahydrofluorenyltitanium trichloride; 9-methyloctahydrofluorenyltrimethyltitanium; 9-methyloctahydrofluorenyltribenzyltitanium; 9-methyloctahydrofluorenyltitanium trimethoxide; any of the above-mentioned compounds in which the titanium is replaced with zirconium or hafnium and a similar compound in which the transition metal element belongs to an other series or lanthnoids. Of these the titanium compounds are preferable from the viewpoint of catalytic activity.
There are available various coordination complex compounds comprising an anion in which a plurality of radicals are bonded to a metal to be used as the component (b) in the present invention, and there is preferably usable such a coordination complex compound as represented by the following general formula (XII) or (XIII):
or
wherein L2 is M4, R18R19M5 or R20 3C as hereinafter described; L1 is a Lewis base; M2 and M3 are each a metal selected from Groups 5 to 15 of the Periodic Table; M4 is a metal selected from Groups 8 to 12 of the Periodic Table; M5 is a metal selected from Groups 8 to 10 of the Periodic Table; X1 to Xn are each a hydrogen atom, a dialkylamino group, an alkoxyl group, an aryloxyl group, an alkyl group having 1 to 20 carbon atoms, an aryl group, an alkylaryl group or an arylalkyl group, each having 6 to 20 carbon atoms, a substituted alkyl group, an organometalloid group or a halogen atom; R18 and R19 are each a cyclopentadienyl group, a substituted cyclopentadienyl group, an indenyl group or a fluorenyl group; R20 is an alkyl group; m is the valency of each of M2 and M3, indicating an integer of 1 to 7; n is an integer of 2 to 8; g is the ion valency of each of [L1−H] and [L2], indicating an integer of 1 to 7; h is an integer of 1 or more; and j=h×g/(n-m).
Specific examples of M2 and M3 include B, Al, Si, P, As, Sb, etc. in the form of atom; those of M4 include Ag, Cu, etc. in the form of atom; and those of M5 include Fe, Co, Ni, etc. in the form of atom. Specific examples of X1 to Xn include a dialkylamino group such as dimethylamino and diethylamino; an alkoxyl group such as methoxyl, ethoxyl and n-butoxyl; an aryloxyl group such as phenoxyl, 2,6-dimethylphenoxyl and naphthyloxyl; an alkyl group having 1 to 20 carbon atoms such as methyl, ethyl, n-propyl, iso-propyl, n-butyl, n-octyl and 2-ethylhexyl; an aryl group, an alkylaryl group or an arylalkyl group each having 6 to 20 carbon atoms, such as phenyl, p-tolyl, benzyl, pentafluorophenyl, 3,5-di(trifluoromethyl)phenyl, 4-tertbutylphenyl, 2,6-dimethylphenyl, 3,5-dimethylphenyl, 2,4dimethylphenyl and 1,2-dimethylphenyl; a halogen atom such as F, Cl, Br and I; and an organometalloid such as pentamethylantimony group, trimethylsilyl group, trimethylgermyl group, diphenylarsine group, dicyclohexylantimony group and diphenylboron group. Specific examples of substituted cyclopentadienyl group represented by any of R18 and R19 include methylcyclopentadienyl, butylcyclopentadienyl and pentamethylcyclopentadienyl.
Specific examples of the anion in which a plurality of radicals are bonded to a metal include B(C6F5)4 −, B(C6HF4)4 −, B(C6H2F3)4 −, B(C6H3F2)4 −, B(C6H4F)4 −, B(C6CF3F4)4 −, B(C6F5)4 −, BF4 −, PF6 −, P(C6F5)6 − and Al(C6HF4)4−.
Specific examples of the metallic cation include CpFe+, (MeCp)2Fe+, (tBuCp)2Fe+, (Me2Cp)2Fe+, (Me3CP)2Fe+, (Me4Cp)2Fe+, (Me5Cp)2Fe+, Ag+, Na+ and Li+, a nitrogen atom-containing compound such as pyridinium, 2,4-dinitro-N,N-diethylanilinium, diphenylammonium, p-nitroanilinium, 2,5-dichloroaniline, p-nitro-N,N-dimethylanilinum, quinolinium, N,N-dimethylanilinum and N,N-diethylanilinium; a carbenium compound such as triphenylcarbenium, tri(4-methylphenyl)carbenium and tri(4-methoxyphenyl)carbenium; an alkylphosphonium ion such as CH3PH3 +, C2H5PH3 +, C3H7PH3 +, (CH3)2PH2 +, (C2H5)2PH2 +, (C3H7)2PH2 +, (CH3)3PH+, (C2H5)3PH+, (C3H7)3PH+, (CF3)3PH+, (CH3)4P+, (C2H5)4P+ and (C3H7)4P+; and an arylphosphonium ion such as C6H5PH3 +, (C6H5)2PH2 +, (C6H5)3PH+, (C6H5)4P+, (C2H5)2(C6H5)PH+, (CH3)(C6H5)PH2 +, (CH3)2(C6H5)PH+ and (C2H5)2(C6H5)2P+.
Among the compounds represented by the general formula (XII) or (XIII), specific examples of preferably usable compounds include, as the compound of the general formula (XII), triethylammonium tetraphenylborate, tri(n-butyl) ammonium tetraphenylborate, trimethylammonium tetraphenylborate, triethylammonium tetra(pentafluorophenyl)borate, tri(n-butyl)ammonium tetra(pentafluorophenyl)borate, triethylammonium hexafluoroarsenate, pyridinium tetra(pentafluorophenyl))borate, pyrrolinium tetra(pentafluorophenyl)borate, N,N-dimethylanilinium tetra(pentafluorophenyl)borate and methyldiphenylammonium tetra(pentafluorophenyl)borate, and as the compound of the general formula (XIII), ferrocenium tetraphenylborate, dimethylferrocenium tetra(pentafluorophenyl)borate, ferrocenium tetra(pentafluorophenyl)borate, decamethylferrocenium tetra(pentafluorophenyl)borate, acetylferrocenium tetra(pentafluorophenyl)borate, formylferrocenium tetra(pentafluorophenyl)borate, cyanoferrocenium tetra(pentafluorophenyl)borate, silver tetraphenylborate, silver tetra(pentafluorophenyl)borate, trityl tetraphenylborate, trityl tetra(pentafluorophenyl)borate, silver hexafluoroarsenate, silver hexafluoroantimonate and silver tetrafluoroborate.
Methylaluminoxane may be used as the component (b) in addition to or in place of the coordination complex compound comprising an anion in which a plurality of radicals are bonded to a metal and a cation.
There are available various alkylating agents as the component (c), which are exemplified by the aluminum compound having an alkyl group represented by the general formula (XV)
wherein R21 and R22 are each an alkyl group having 1 to 8, preferably 1 to 4 carbon atoms, X is a hydrogen atom or a halogen atom, m′ satisfies the relation 0<m′≦3, desirably m′=2 or 3, most desirably m′=3, and n′ satisfies the relation 0≦n′<3, desirably n′=0 or 1; the magnesium compound having an alkyl group represented by the general formula (XVI)
wherein R21 is as previously defined;
the zinc compound having an alkyl group represented by the general formula (XVII)
wherein R21 is as previously defined; and the like.
The aforesaid compounds each having an alkyl group are preferably aluminum compounds each having an alkyl group, more desirably trialkylaluminum compounds and dialkylaluminum compounds, and specifically exemplified by trialkylaluminum such as trimethylaluminum, triethylaluminum, tri-n-propylaluminum, triisopropylaluminum, tri-n-butylaluminum, triisobutylaluminum and tri-tert-butylaluminum; dialkylaluminum halide such as dimethylaluminum chloride, diethylaluminum chloride, di-n-propylaluminum chloride, diisopropylaluminum chloride, di-n-butylaluminum chloride, diisobutylaluminum chloride and di-tert-butylaluminum chloride; dialkylaluminum alkoxide such as dimethylaluminum methoxide and dimethylaluminum ethoxide; dialkylaluminum hydride such as dimethylaluminum hydride, diethylaluminum hydride and diisobutylaluminum hydride, dialkylmagnesium such as dimethylmagnesium, diethylmagnesium, di-n-propylmagnesium and diisopropylmagnesium; and dialkylzinc such as dimethylzinc, diethylzinc, di-n-propylethylzinc and diisopropylzinc, and the like.
As described hereinbefore, the process according to the present invention comprises polymerizing a styrenic monomer by the use of the catalyst composed of the components (a), (b) and (c) and incorporating in the polymerization system, a (d) reaction product between a straight chain alkylaluminum having at least two carbon atoms in the alkyl group as represented by the general formula (XVIII) and water.
wherein Ro is a straight chain alkyl group having 2 to 10, preferably 2 to 6 carbon atoms. Specific examples of such alkylaluminum include triethylaluminum, tri-n-propylaluminum, tri-n-butylaluminum, tri-n-pentylaluminum, tri-n-hexylaluminum and tri-n-heptylaluminum.
The water to be reacted with the straight chain alkylaluminum may be any of ice, water, steam, an organic solvent saturated with water and water of crystallization.
The reaction product between such a straight chain alkylaluminum and water to be used in the present invention is obtained by reacting the above-mentioned straight chain alkylaluminum with water in a molar ratio of 1:(1 to 2) at a temperature of −78° to 100° C. in a organic solvent without active hydrogen atom, and is represented by the general formula (XIX) or (XX)
wherein Ro is as previously defined and n is an integer from 1 to 20. Specific examples of these compounds include ethylaluminoxane, propylaluminoxane, butylaluminoxane, pentylaluminoxane, hexylaluminoxane and heptylaluminoxane.
The above-mentioned compound represented by the general formula (XIX) or (XX) has preferably n of 1 to 5 and may be used alone or in combination with at least one other one.
In the case of carrying out the process of the present invention, the aforesaid components (a), (b), (c) and (d) may be added, separately one by one, to the monomer to be polymerized, or may be premixed with a solvent (aromatic hydrocarbon such as toluene, and ethylbenzene or aliphatic hydrocarbon such as hexane and heptane) prior to mixing with the monomer, in which the components (c) and (d) may totally or partly be added to the monomer.
The addition of the aforesaid components (a), (b), (c) and (d) to the monomer can be carried out at a temperature of 0° to 100° C., needless to say, at a polymerization temperature.
The above-described catalyst along with the chain transfer agent exhibit a high activity in the production of a styrenic polymer having a high degree of syndiotactic configuration.
The molecular weight of the resultant polymer can be lowered by the addition of the component (d), but the amount thereof to be added is not specifically limited, since it varies depending on the type of each of the components (a), (b), (c) and (d), the monomer species and polymerization conditions such as polymerization temperature.
In the production of a styrenic polymer by the process according to the present invention, a styrenic monomer or monomers or a styrenic derivative or derivatives is homopolymerized or are copolymerized in the present of a catalyst composed mainly of the components (a), (b) and (c) and chain transfer agent of the component (d).
As the styrenic monomer, there is preferably used a compound represented by the general formula (XXI)
wherein R23 is hydrogen atom, a halogen atom or a hydrocarbon group having 1 to 20 carbon atoms, m′ is an integer from 1 to 3 and, when m′ is 2 or greater, a plurality of R23 may be the same or different.
Examples of the compound of the general formula (XXI) include styrene; alkylstyrenes such as p-methylstyrene; m-methylstyrene; o-methylstyrene; 2,4-dimethylstyrene; 2,5-dimethylstyrene; 3,4-dimethylstyrene; 3,5-dimethylstyrene; and p-tertiary-butylstyrene; polyvinylbenzenes such as p-divinylbenzene; m-divinylbenzene; and trivinylbenzene; halogenated styrenes such as p-chlorostyrene; m-chlorostyrene; o-chlorostyrene; p-bromostyrene; m-bromostyrene; o-bromostyrene; p-fluorostyrene; m-fluorostyrene; o-fluorostyrene and o-methyl-p-fluorostyrene; alkoxystyrenes such as methoxystyrene; ethoxystyrene; and tert-butyoxystyrene; and a mixture of at least two of them.
The polymerization of the styrenic monomer or monomers may be carried out by means of bulk polymerization or solution polymerization by the use of an aliphatic hydrocarbon solvent such as pentane, hexane or heptane, an alicyclic hydrocarbon solvent such as cyclohexane or an aromatic hydrocarbon solvent such as benzene, toluene or xylene. The polymerization temperature is not specifically limited, but is usually in the range of 20° to 120° C., preferably 20° to 90° C. In addition, the polymerization reaction may be carried out in the presence of hydrogen in order to modify the molecular weight of the styrenic polymer to be produced.
The styrenic polymer thus obtained possesses a high degree of syndiotactic configuration in its polymerization chain of the styrenic monomer. Here, the styrenic polymer having a high degree of syndiotactic configuration in its polymerization chain of the styrenic monomer means that its stereochemical structure is mainly of syndiotactic configuration, i.e. the stereostructure in which phenyl groups or substituted phenyl group as side chains are located alternately at opposite directions relative to the main chain consisting of carbon-carbon bonds. Tacticity is quantitatively determined by the nuclear magnetic resonance method (13C-NMR method) using carbon isotope. The tacticity as determined by the 13C-NMR method can be indicated in terms of proportions of structural units continuously connected to each other, i.e., a diad in which two structural units are connected to each other, a triad in which three structural units are connected to each other and a pentad in which five structural unit are connected to each other. “-The styrenic polymers having a high degree of syndiotactic configuration” as mentioned in the present invention means polystyrene, poly(alkylstyrene), poly(halogenated styrene), poly(alkoxystyrene), poly(vinylbenzoate), the mixtures thereof, and copolymers containing the above polymers as main components, having such a syndiotacticity that the proportion of racemic diad is at least 75%, preferably at least 85%, or the proportion of racemic pentad is at least 30%, preferably at least 50%. The poly(alkylstyrene) includes poly(methylstyrene), poly(ethylstyrene) poly(isopropylstyrene), poly(tert-butylstyrene), etc., poly(halogenated styrene) includes poly(chlorostyrene), poly(bromostyrene), and poly(fluorostyrene), etc. The poly(alkoxystyrene) includes poly(methoxystyrene), poly(ethoxystyrene), etc. The most desirable styrenic polymers are polystyrene, poly(p-methylstyrene), poly(m-methylstyrene), poly(p-tert-butylstyrene), poly(p-chlorostyrene), poly(m-chlorostyrene), poly(p-fluorostyrene), and the copolymer of styrene and p-methylstyrene.
As described hereinbefore, the process according to the present invention makes it possible to attain a high activity in the production of a styrenic polymer having a high degree of syndiotactic configuration, decrease the amount of the residual metals in the resultant styrenic polymer without deterioration of the catalytic activity by the use of a reaction product between the specific straight chain alkylaluminum and water, and at the same time, to simplify the production process of the styrenic polymer and curtail the production cost thereof.
In the following, the present invention will be described in more detail with reference to comparative examples and examples, which however, shall not be construed to limit the present invention thereto.
(1) Synthesis of ethylaluminoxane
In a 5 liter (hereinafter abbreviated to “L”) vessel which had been dried and purged with nitrogen was placed 178 milliliter (hereinafter abbreviated to “mL”) of 0.5 mol/L solution of triethylaluminum in 112 mL of toluene. To the resultant mixture was gradually added dropwise under sufficient stirring at room temperature, 1.67 L solution in toluene (H2O; 430.7×10−6 g/mL) which had been adjusted in water content by means of ion-exchanged water. After the completion of the dropwise addition, the toluene was distilled away to form 8.5 g of product.
(2) Polymerization of styrene
In a 50 mL vessel which had been dried and purged with nitrogen were successively placed 0.4 mL of 2 moles/L of triisobutylaluminum in 39.3 mL of toluene, 64 mg of dimethylanilinium tetra(pentafluorophenyl)borate, and 0.32 mL of 250 mmol of pentamethylcyclopentadienyltitanium trimethoxide to prepare a preliminary mixed catalyst. In a 30 mL vessel which had been dried and purged with nitrogen were placed 10 mL of styrene and 45 μL of 0.28 mol/L of ethylaluminoxane with heating to 70° C. and 250 μL of the preliminary mixed catalyst as prepared above to polymerize the styrene for 1 hour. After the completion of the reaction, the reaction product was dried to afford 2.99 g of a polymer. The resultant polymer was cut into slices of at most 1 mm in thickness, which were subjected to Soxhlet extraction for 6 hours by the use of methyl ethyl ketone (MEK) as the solvent to produce MIP (MEK-insoluble portion). As a result, objective SPS having a molecular weight of 310,000 was obtained in a yield of 2.83 g with a raffinate (MIP) rate of 94.8% and an activity for SPS of 118 kg/g-Ti.
The procedure in Example 1 (2) was repeated to obtain 2.87 g of a polymer except that the addition amount of 0.28 mol/L of ethylaluminoxane was set on 90 μL in place of 45 μL. The resultant polymer was subjected to Soxhlet extraction for 6 hours by the use of methyl ethyl ketone (MEK) as the solvent to produce MIP. As a result, objective SPS having a molecular weight of 240,000 was obtained in a yield of 2.80 g with a raffinate (MIP) rate of 97.6% and an activity for SPS of 117 kg/g-Ti.
The procedure in Example 1 (2) was repeated to obtain 2.87 g of a polymer except that there was used n-butylaluminoxane which had been prepared in the same manner as in Example 1 (1) in place of ethylaluminoxane. The resultant polymer was subjected to Soxhlet extraction for 6 hours by the use of methyl ethyl ketone (MEK) as the solvent to produce MIP. As a result, objective SPS having a molecular weight of 350,000 was obtained in a yield of 2.81 g with a raffinate (MIP) rate of 97.9% and an activity for SPS of 117 kg/g-Ti.
The procedure in Example 1 (2) was repeated to obtain a polymer except that there was used n-propylaluminoxane which had been prepared in the same manner as in Example 1 (1) in place of ethylaluminoxane. The resultant polymer was subjected to Soxhlet extraction for 6 hours by the use of methyl ethyl ketone (MEK) as the solvent to produce MIP. As a result, objective SPS having a molecular weight of 340,000 was obtained with a raffinate (MIP) rate of 95% and an activity for SPS of 120 kg/g-Ti.
The procedure in Example 1 (2) was repeated to obtain a polymer except that there was used ferrocenium tetra(pentafluorenyl)borate in place of dimethylanilinium tetra(pentafluorenyl)borate. The resultant polymer was subjected to Soxhlet extraction for 6 hours by the use of methyl ethyl ketone (MEK) as the solvent to produce MIP. As a result, objective SPS having a molecular weight of 320,000 was obtained with a raffinate (MIP) rate of 95% and an activity for SPS of 122 kg/g-Ti.
The procedure in Example 1 (2) was repeated to obtain a polymer except that there was used tri-n-butylaluminum in place of triisobutylaluminum. The resultant polymer was subjected to Soxhlet extraction for 6 hours by the use of methyl ethyl ketone (MEK) as the solvent to produce MIP. As a result, objective SPS having a molecular weight of 310,000 was obtained with a raffinate (MIP) rate of 95% and an activity for SPS of 119 kg/g-Ti.
The procedure in Example 1 (2) was repeated to obtain a polymer except that ethylaluminoxane was not used. The resultant polymer was subjected to Soxhlet extraction for 6 hours by the use of methyl ethyl ketone (MEK) as the solvent to produce MIP. As a result, objective SPS having a molecular weight of 871,000 was obtained in a yield of 2.69 g with a raffinate (MIP) rate of 95.5% and an activity for SPS of 112 kg/g-Ti.
The procedure in Example 1 (2) was repeated except that 4.0 mL of 1.6 mol/L of methylaluminoxane solution was used in place of 64 mg of dimethylanilinium tetra(pentafluorophenyl)borate. As a result, objective SPS having a molecular weight of 340,000 was obtained in a yield of 3.25 g with a raffinate (MIP) rate of 96.4% and an activity for SPS of 138 kg/g-Ti.
The procedure in Example 1 (2) was repeated except that 0.5 mmol of butylethylmagnesium was used in place of 0.4 mL of 2 mol/L of triisobutylaluminum and 4.0 mL of 1.6 mol/L of methylaluminoxane solution was used in place of 64 mg of dimethylanilinium tetra(pentafluorophenyl)borate. As a result, object SPS having a molecular weight of 370,000 was obtained in a yield of 2.25 g with a raffinate (MIP) rate of 94.4% and an activity for SPS of 93 kg/g-Ti.
The procedure in Example 1 (2) was repeated except that 1.0 mL of 2.0 mol/L of trimethylaluminum solution was used in place of 64 mg of dimethylanilinium tetra(pentafluorophenyl)borate. As a result, objective SPS having a molecular weight of 270,000 was obtained in a yield of 0.95 g with a raffinate (MIP) rate of 90.5% and an activity for SPS of 38 kg/g-Ti.
Claims (7)
1. A process for producing a styrenic polymer having a high degree of syndiotacticity, which comprises:
polymerizing a styrenic monomer in the presence of a catalyst of (a) a transition metal compound, (b) methylaluminoxane, (c) at least one alkylating agent selected from the group consisting of triethylaluminum, tri-n-propylaluminum, triisopropylaluminum, tri-n-butylaluminum, triisobutylaluminum, tri-tert-butylaluminum, dialkylaluminumhalide, dialkylmagnesium and dialkylzinc, and (d) a reaction product between a straight-chain alkylaluminum having at least 2 carbon atoms in the alkyl group as represented by formula (XVIII) and water:
wherein Ro is a straight-chain alkyl group having 2 to 10 carbon atoms.
3. The process according to claim 1 wherein the reaction product as the component (d) is at least one member selected from the group consisting of ethylaluminoxane, propylaluminoxane, butylaluminoxane, pentylaluminoxane, hexylaluminoxane and heptylaluminoxane.
4. The process according to claim 1, wherein (a) said transition metal compound is of formula (I), (II), (VI) or (VII):
wherein M is a metal belonging to any of the groups 3 to 6 of the Periodic Table or a lanthanum series metal; R1, R2, R3 and R4 are each an alkyl group, an alkoxy group, an aryl group, a cyclopentadienyl group, an alkylthio group, a substituted cyclopentadienyl group, an indenyl group, a substituted indenyl group, a fluorenyl group, a halogen atom or a chelating agent; a, b and c are each an integer of from 0 to 4; d and e are each an integer of from 0 to 3; and any two of R1 to R4 may form a complex which is crosslinked with CH2 or Si(CH3)2;
wherein R9 and R10 each represent a halogen atom, an alkoxyl group having 1 to 20 carbon atoms or an acyloxyl group; and k is an integer of from 2 to 20;
wherein m1 is titanium, zirconium or hafnium; R11 and R12 are each a cyclopentadienyl group, a substituted cyclopentadienyl group, an indenyl group or a fluorenyl group and R13 and R14 are each a hydrogen atom, a halogen atom, a hydrocarbon group having 1 to 20 carbon atoms, an alkoxyl group having 1 to 20 carbon atoms, an amino group or thioalkoxyl group having 1 to 20 carbon atoms, but R11 and R12 may be each crosslinked by a hydrocarbon group having 1 to 5 carbon atoms, an alkylsilyl group having 1 to 20 carbon atoms and 1 to 5 silicon atoms or a germanium-containing hydrocarbon group having 1 to 20 carbon atoms and 1 to 5 germanium atoms.
5. The process according to claim 4, wherein M or M1 is titanium.
6. The process according to claim 4, wherein R1 is a cyclopentadienyl group, a substituted cyclopentadienyl group, an indenyl group or a substituted indenyl group.
7. The process according to claim 5, wherein R1 is a cyclopentadienyl group, a substituted cyclopentadienyl group, an indenyl group or a substituted indenyl group.
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US08/711,795 US5756612A (en) | 1995-03-30 | 1996-09-10 | Process for producing styrenic polymer |
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