US20040235680A1 - Conveyor lubricant with corrosion inhibition - Google Patents
Conveyor lubricant with corrosion inhibition Download PDFInfo
- Publication number
- US20040235680A1 US20040235680A1 US10/877,076 US87707604A US2004235680A1 US 20040235680 A1 US20040235680 A1 US 20040235680A1 US 87707604 A US87707604 A US 87707604A US 2004235680 A1 US2004235680 A1 US 2004235680A1
- Authority
- US
- United States
- Prior art keywords
- composition
- lubricant
- salt
- water
- hydrogen peroxide
- 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.)
- Abandoned
Links
- 239000000314 lubricant Substances 0.000 title claims abstract description 95
- 230000007797 corrosion Effects 0.000 title claims abstract description 22
- 238000005260 corrosion Methods 0.000 title claims abstract description 22
- 230000005764 inhibitory process Effects 0.000 title description 3
- 239000000203 mixture Substances 0.000 claims abstract description 142
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 claims abstract description 46
- 238000000034 method Methods 0.000 claims abstract description 31
- 229910052751 metal Inorganic materials 0.000 claims abstract description 25
- 239000002184 metal Substances 0.000 claims abstract description 25
- 150000003839 salts Chemical class 0.000 claims abstract description 25
- 150000001298 alcohols Chemical class 0.000 claims abstract description 9
- -1 oxalkylated alcohol carboxylic acid Chemical class 0.000 claims description 43
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 32
- 235000013361 beverage Nutrition 0.000 claims description 18
- 229920001577 copolymer Polymers 0.000 claims description 14
- GOOHAUXETOMSMM-UHFFFAOYSA-N Propylene oxide Chemical compound CC1CO1 GOOHAUXETOMSMM-UHFFFAOYSA-N 0.000 claims description 12
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 12
- 230000004580 weight loss Effects 0.000 claims description 11
- 229920000139 polyethylene terephthalate Polymers 0.000 claims description 10
- 239000005020 polyethylene terephthalate Substances 0.000 claims description 10
- 229920001296 polysiloxane Polymers 0.000 claims description 10
- 239000003795 chemical substances by application Substances 0.000 claims description 9
- 239000010960 cold rolled steel Substances 0.000 claims description 9
- IAYPIBMASNFSPL-UHFFFAOYSA-N Ethylene oxide Chemical group C1CO1 IAYPIBMASNFSPL-UHFFFAOYSA-N 0.000 claims description 8
- 150000001412 amines Chemical class 0.000 claims description 8
- 230000001050 lubricating effect Effects 0.000 claims description 8
- 239000004094 surface-active agent Substances 0.000 claims description 8
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 claims description 7
- 229920001400 block copolymer Polymers 0.000 claims description 7
- 239000006260 foam Substances 0.000 claims description 6
- 239000007788 liquid Substances 0.000 claims description 6
- 229910001220 stainless steel Inorganic materials 0.000 claims description 6
- 239000010935 stainless steel Substances 0.000 claims description 6
- 238000005336 cracking Methods 0.000 claims description 5
- 239000004417 polycarbonate Substances 0.000 claims description 5
- 229920000515 polycarbonate Polymers 0.000 claims description 5
- 229920000728 polyester Polymers 0.000 claims description 5
- 229920000098 polyolefin Polymers 0.000 claims description 5
- OFOBLEOULBTSOW-UHFFFAOYSA-N Malonic acid Chemical compound OC(=O)CC(O)=O OFOBLEOULBTSOW-UHFFFAOYSA-N 0.000 claims description 4
- 239000003112 inhibitor Substances 0.000 claims description 4
- 239000002736 nonionic surfactant Substances 0.000 claims description 4
- ZQPPMHVWECSIRJ-KTKRTIGZSA-N oleic acid group Chemical group C(CCCCCCC\C=C/CCCCCCCC)(=O)O ZQPPMHVWECSIRJ-KTKRTIGZSA-N 0.000 claims description 4
- 150000003014 phosphoric acid esters Chemical class 0.000 claims description 4
- 239000003755 preservative agent Substances 0.000 claims description 4
- WRIDQFICGBMAFQ-UHFFFAOYSA-N (E)-8-Octadecenoic acid Natural products CCCCCCCCCC=CCCCCCCC(O)=O WRIDQFICGBMAFQ-UHFFFAOYSA-N 0.000 claims description 3
- LQJBNNIYVWPHFW-UHFFFAOYSA-N 20:1omega9c fatty acid Natural products CCCCCCCCCCC=CCCCCCCCC(O)=O LQJBNNIYVWPHFW-UHFFFAOYSA-N 0.000 claims description 3
- QSBYPNXLFMSGKH-UHFFFAOYSA-N 9-Heptadecensaeure Natural products CCCCCCCC=CCCCCCCCC(O)=O QSBYPNXLFMSGKH-UHFFFAOYSA-N 0.000 claims description 3
- 239000006057 Non-nutritive feed additive Substances 0.000 claims description 3
- 239000005642 Oleic acid Substances 0.000 claims description 3
- ZQPPMHVWECSIRJ-UHFFFAOYSA-N Oleic acid Natural products CCCCCCCCC=CCCCCCCCC(O)=O ZQPPMHVWECSIRJ-UHFFFAOYSA-N 0.000 claims description 3
- 239000004599 antimicrobial Substances 0.000 claims description 3
- 239000003963 antioxidant agent Substances 0.000 claims description 3
- 239000002216 antistatic agent Substances 0.000 claims description 3
- 239000011230 binding agent Substances 0.000 claims description 3
- 238000004061 bleaching Methods 0.000 claims description 3
- 239000000872 buffer Substances 0.000 claims description 3
- 239000000969 carrier Substances 0.000 claims description 3
- 239000003599 detergent Substances 0.000 claims description 3
- 239000003995 emulsifying agent Substances 0.000 claims description 3
- QXJSBBXBKPUZAA-UHFFFAOYSA-N isooleic acid Natural products CCCCCCCC=CCCCCCCCCC(O)=O QXJSBBXBKPUZAA-UHFFFAOYSA-N 0.000 claims description 3
- 230000003472 neutralizing effect Effects 0.000 claims description 3
- 239000003352 sequestering agent Substances 0.000 claims description 3
- 239000002904 solvent Substances 0.000 claims description 3
- 239000002562 thickening agent Substances 0.000 claims description 3
- 239000004034 viscosity adjusting agent Substances 0.000 claims description 3
- 229920001707 polybutylene terephthalate Polymers 0.000 claims 2
- 239000011248 coating agent Substances 0.000 claims 1
- 238000000576 coating method Methods 0.000 claims 1
- 238000005461 lubrication Methods 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 claims 1
- 229920000915 polyvinyl chloride Polymers 0.000 claims 1
- 239000002253 acid Substances 0.000 abstract description 5
- 230000000052 comparative effect Effects 0.000 description 33
- 239000000243 solution Substances 0.000 description 16
- 238000004140 cleaning Methods 0.000 description 11
- 238000012360 testing method Methods 0.000 description 11
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 9
- 239000000463 material Substances 0.000 description 9
- 239000000654 additive Substances 0.000 description 8
- 235000014113 dietary fatty acids Nutrition 0.000 description 8
- 239000000194 fatty acid Substances 0.000 description 8
- 229930195729 fatty acid Natural products 0.000 description 8
- 239000000126 substance Substances 0.000 description 8
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 7
- 150000004665 fatty acids Chemical class 0.000 description 7
- 150000002739 metals Chemical class 0.000 description 7
- 239000003921 oil Substances 0.000 description 6
- 235000019198 oils Nutrition 0.000 description 6
- 239000000123 paper Substances 0.000 description 6
- 229920001983 poloxamer Polymers 0.000 description 6
- 229920000642 polymer Polymers 0.000 description 6
- 229910000831 Steel Inorganic materials 0.000 description 5
- 150000001875 compounds Chemical class 0.000 description 5
- 239000008367 deionised water Substances 0.000 description 5
- 229910021641 deionized water Inorganic materials 0.000 description 5
- 150000002978 peroxides Chemical class 0.000 description 5
- 229920003023 plastic Polymers 0.000 description 5
- 239000004033 plastic Substances 0.000 description 5
- 239000010959 steel Substances 0.000 description 5
- 238000010998 test method Methods 0.000 description 5
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 4
- 239000004698 Polyethylene Substances 0.000 description 4
- 125000004432 carbon atom Chemical group C* 0.000 description 4
- 239000002131 composite material Substances 0.000 description 4
- 239000000839 emulsion Substances 0.000 description 4
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 3
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 3
- DNIAPMSPPWPWGF-UHFFFAOYSA-N Propylene glycol Chemical compound CC(O)CO DNIAPMSPPWPWGF-UHFFFAOYSA-N 0.000 description 3
- 229920002125 Sokalan® Polymers 0.000 description 3
- 230000000996 additive effect Effects 0.000 description 3
- 125000000217 alkyl group Chemical group 0.000 description 3
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 description 3
- 238000001035 drying Methods 0.000 description 3
- 239000011521 glass Substances 0.000 description 3
- 150000002430 hydrocarbons Chemical group 0.000 description 3
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 3
- LXCFILQKKLGQFO-UHFFFAOYSA-N p-hydroxybenzoic acid methyl ester Natural products COC(=O)C1=CC=C(O)C=C1 LXCFILQKKLGQFO-UHFFFAOYSA-N 0.000 description 3
- 229920000573 polyethylene Polymers 0.000 description 3
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 3
- 239000004810 polytetrafluoroethylene Substances 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- 235000011044 succinic acid Nutrition 0.000 description 3
- 230000004584 weight gain Effects 0.000 description 3
- 239000002023 wood Substances 0.000 description 3
- 0 *OC(C)C(C)[Y] Chemical compound *OC(C)C(C)[Y] 0.000 description 2
- QTBSBXVTEAMEQO-UHFFFAOYSA-M Acetate Chemical compound CC([O-])=O QTBSBXVTEAMEQO-UHFFFAOYSA-M 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 2
- 239000005977 Ethylene Substances 0.000 description 2
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 2
- 239000004952 Polyamide Substances 0.000 description 2
- 239000004743 Polypropylene Substances 0.000 description 2
- 239000004793 Polystyrene Substances 0.000 description 2
- UIIMBOGNXHQVGW-UHFFFAOYSA-M Sodium bicarbonate Chemical compound [Na+].OC([O-])=O UIIMBOGNXHQVGW-UHFFFAOYSA-M 0.000 description 2
- KDYFGRWQOYBRFD-UHFFFAOYSA-N Succinic acid Natural products OC(=O)CCC(O)=O KDYFGRWQOYBRFD-UHFFFAOYSA-N 0.000 description 2
- 150000007513 acids Chemical class 0.000 description 2
- 150000003973 alkyl amines Chemical class 0.000 description 2
- 125000002947 alkylene group Chemical group 0.000 description 2
- 239000003945 anionic surfactant Substances 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 239000007844 bleaching agent Substances 0.000 description 2
- 239000003093 cationic surfactant Substances 0.000 description 2
- 239000003518 caustics Substances 0.000 description 2
- 239000000919 ceramic Substances 0.000 description 2
- 235000013365 dairy product Nutrition 0.000 description 2
- 150000004985 diamines Chemical class 0.000 description 2
- 239000003085 diluting agent Substances 0.000 description 2
- 238000010790 dilution Methods 0.000 description 2
- 239000012895 dilution Substances 0.000 description 2
- 239000004744 fabric Substances 0.000 description 2
- 150000002191 fatty alcohols Chemical class 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 229940083124 ganglion-blocking antiadrenergic secondary and tertiary amines Drugs 0.000 description 2
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 description 2
- 239000004292 methyl p-hydroxybenzoate Substances 0.000 description 2
- 235000010270 methyl p-hydroxybenzoate Nutrition 0.000 description 2
- 229960002216 methylparaben Drugs 0.000 description 2
- 235000013336 milk Nutrition 0.000 description 2
- 239000008267 milk Substances 0.000 description 2
- 210000004080 milk Anatomy 0.000 description 2
- 239000002480 mineral oil Substances 0.000 description 2
- 235000010446 mineral oil Nutrition 0.000 description 2
- 238000004806 packaging method and process Methods 0.000 description 2
- 229920002647 polyamide Polymers 0.000 description 2
- 229920001223 polyethylene glycol Polymers 0.000 description 2
- 239000011112 polyethylene naphthalate Substances 0.000 description 2
- 229920001155 polypropylene Polymers 0.000 description 2
- 229920002223 polystyrene Polymers 0.000 description 2
- 229920002981 polyvinylidene fluoride Polymers 0.000 description 2
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Chemical compound [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 description 2
- 150000003141 primary amines Chemical class 0.000 description 2
- QELSKZZBTMNZEB-UHFFFAOYSA-N propylparaben Chemical compound CCCOC(=O)C1=CC=C(O)C=C1 QELSKZZBTMNZEB-UHFFFAOYSA-N 0.000 description 2
- 239000001384 succinic acid Substances 0.000 description 2
- 239000012085 test solution Substances 0.000 description 2
- BQCIDUSAKPWEOX-UHFFFAOYSA-N 1,1-Difluoroethene Chemical compound FC(F)=C BQCIDUSAKPWEOX-UHFFFAOYSA-N 0.000 description 1
- DURPTKYDGMDSBL-UHFFFAOYSA-N 1-butoxybutane Chemical compound CCCCOCCCC DURPTKYDGMDSBL-UHFFFAOYSA-N 0.000 description 1
- FZZMTSNZRBFGGU-UHFFFAOYSA-N 2-chloro-7-fluoroquinazolin-4-amine Chemical compound FC1=CC=C2C(N)=NC(Cl)=NC2=C1 FZZMTSNZRBFGGU-UHFFFAOYSA-N 0.000 description 1
- 229910000619 316 stainless steel Inorganic materials 0.000 description 1
- 229910052582 BN Inorganic materials 0.000 description 1
- 101710110315 Bacchus Proteins 0.000 description 1
- PZNSFCLAULLKQX-UHFFFAOYSA-N Boron nitride Chemical compound N#B PZNSFCLAULLKQX-UHFFFAOYSA-N 0.000 description 1
- UXVMQQNJUSDDNG-UHFFFAOYSA-L Calcium chloride Chemical compound [Cl-].[Cl-].[Ca+2] UXVMQQNJUSDDNG-UHFFFAOYSA-L 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- VCUFZILGIRCDQQ-KRWDZBQOSA-N N-[[(5S)-2-oxo-3-(2-oxo-3H-1,3-benzoxazol-6-yl)-1,3-oxazolidin-5-yl]methyl]-2-[[3-(trifluoromethoxy)phenyl]methylamino]pyrimidine-5-carboxamide Chemical compound O=C1O[C@H](CN1C1=CC2=C(NC(O2)=O)C=C1)CNC(=O)C=1C=NC(=NC=1)NCC1=CC(=CC=C1)OC(F)(F)F VCUFZILGIRCDQQ-KRWDZBQOSA-N 0.000 description 1
- 229920001774 Perfluoroether Polymers 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 239000004809 Teflon Substances 0.000 description 1
- 229920006362 Teflon® Polymers 0.000 description 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- 229910021626 Tin(II) chloride Inorganic materials 0.000 description 1
- 150000001279 adipic acids Chemical class 0.000 description 1
- 229920005603 alternating copolymer Polymers 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 239000002280 amphoteric surfactant Substances 0.000 description 1
- 239000010775 animal oil Substances 0.000 description 1
- 125000000129 anionic group Chemical group 0.000 description 1
- 230000002528 anti-freeze Effects 0.000 description 1
- GHPGOEFPKIHBNM-UHFFFAOYSA-N antimony(3+);oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[Sb+3].[Sb+3] GHPGOEFPKIHBNM-UHFFFAOYSA-N 0.000 description 1
- UCMIRNVEIXFBKS-UHFFFAOYSA-N beta-alanine Chemical compound NCCC(O)=O UCMIRNVEIXFBKS-UHFFFAOYSA-N 0.000 description 1
- 230000003115 biocidal effect Effects 0.000 description 1
- 239000003139 biocide Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000001680 brushing effect Effects 0.000 description 1
- 239000001110 calcium chloride Substances 0.000 description 1
- 229910001628 calcium chloride Inorganic materials 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 235000014171 carbonated beverage Nutrition 0.000 description 1
- 125000002091 cationic group Chemical group 0.000 description 1
- UUAGAQFQZIEFAH-UHFFFAOYSA-N chlorotrifluoroethylene Chemical group FC(F)=C(F)Cl UUAGAQFQZIEFAH-UHFFFAOYSA-N 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 235000005687 corn oil Nutrition 0.000 description 1
- 239000002285 corn oil Substances 0.000 description 1
- 239000007822 coupling agent Substances 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- YXVFQADLFFNVDS-UHFFFAOYSA-N diammonium citrate Chemical compound [NH4+].[NH4+].[O-]C(=O)CC(O)(C(=O)O)CC([O-])=O YXVFQADLFFNVDS-UHFFFAOYSA-N 0.000 description 1
- 150000001991 dicarboxylic acids Chemical class 0.000 description 1
- KPUWHANPEXNPJT-UHFFFAOYSA-N disiloxane Chemical class [SiH3]O[SiH3] KPUWHANPEXNPJT-UHFFFAOYSA-N 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 239000000806 elastomer Substances 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000010685 fatty oil Substances 0.000 description 1
- 229920002313 fluoropolymer Polymers 0.000 description 1
- 239000004811 fluoropolymer Substances 0.000 description 1
- 235000013305 food Nutrition 0.000 description 1
- 150000002311 glutaric acids Chemical class 0.000 description 1
- 235000011187 glycerol Nutrition 0.000 description 1
- 150000002334 glycols Chemical class 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 229920001903 high density polyethylene Polymers 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
- XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxide Chemical compound [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 238000002372 labelling Methods 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
- CWQXQMHSOZUFJS-UHFFFAOYSA-N molybdenum disulfide Chemical compound S=[Mo]=S CWQXQMHSOZUFJS-UHFFFAOYSA-N 0.000 description 1
- 229910052982 molybdenum disulfide Inorganic materials 0.000 description 1
- 235000021313 oleic acid Nutrition 0.000 description 1
- 125000001117 oleyl 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])/C([H])=C([H])\C([H])([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 1
- 150000002895 organic esters Chemical class 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 229920001484 poly(alkylene) Polymers 0.000 description 1
- 229920003207 poly(ethylene-2,6-naphthalate) Polymers 0.000 description 1
- 229920001515 polyalkylene glycol Polymers 0.000 description 1
- 229920013636 polyphenyl ether polymer Polymers 0.000 description 1
- 229920001451 polypropylene glycol Polymers 0.000 description 1
- 239000011591 potassium Substances 0.000 description 1
- 229910052700 potassium Inorganic materials 0.000 description 1
- 229910000027 potassium carbonate Inorganic materials 0.000 description 1
- 230000002335 preservative effect Effects 0.000 description 1
- ZNZJJSYHZBXQSM-UHFFFAOYSA-N propane-2,2-diamine Chemical compound CC(C)(N)N ZNZJJSYHZBXQSM-UHFFFAOYSA-N 0.000 description 1
- 239000004405 propyl p-hydroxybenzoate Substances 0.000 description 1
- 235000010232 propyl p-hydroxybenzoate Nutrition 0.000 description 1
- 229960003415 propylparaben Drugs 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 150000004760 silicates Chemical class 0.000 description 1
- 238000002791 soaking Methods 0.000 description 1
- 229910000030 sodium bicarbonate Inorganic materials 0.000 description 1
- 235000017557 sodium bicarbonate Nutrition 0.000 description 1
- 159000000000 sodium salts Chemical class 0.000 description 1
- RPACBEVZENYWOL-XFULWGLBSA-M sodium;(2r)-2-[6-(4-chlorophenoxy)hexyl]oxirane-2-carboxylate Chemical compound [Na+].C=1C=C(Cl)C=CC=1OCCCCCC[C@]1(C(=O)[O-])CO1 RPACBEVZENYWOL-XFULWGLBSA-M 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 235000011150 stannous chloride Nutrition 0.000 description 1
- 150000003444 succinic acids Chemical class 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- HLZKNKRTKFSKGZ-UHFFFAOYSA-N tetradecan-1-ol Chemical compound CCCCCCCCCCCCCCO HLZKNKRTKFSKGZ-UHFFFAOYSA-N 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- 239000004416 thermosoftening plastic Substances 0.000 description 1
- 229910052718 tin Inorganic materials 0.000 description 1
- AXZWODMDQAVCJE-UHFFFAOYSA-L tin(II) chloride (anhydrous) Chemical compound [Cl-].[Cl-].[Sn+2] AXZWODMDQAVCJE-UHFFFAOYSA-L 0.000 description 1
- 229920000428 triblock copolymer Polymers 0.000 description 1
- 235000015112 vegetable and seed oil Nutrition 0.000 description 1
- 239000008158 vegetable oil Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D1/00—Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
- C11D1/02—Anionic compounds
- C11D1/04—Carboxylic acids or salts thereof
- C11D1/08—Polycarboxylic acids containing no nitrogen or sulfur
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D1/00—Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
- C11D1/02—Anionic compounds
- C11D1/04—Carboxylic acids or salts thereof
- C11D1/06—Ether- or thioether carboxylic acids
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
- C11D3/0005—Other compounding ingredients characterised by their effect
- C11D3/0073—Anticorrosion compositions
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
- C11D3/39—Organic or inorganic per-compounds
- C11D3/3947—Liquid compositions
-
- C11D2111/16—
Definitions
- the present invention relates to conveyor lubricant compositions and to methods of using the same.
- the containers In commercial container filling or packaging operations, the containers typically are moved by a conveying system at very high rates of speed. In most packaging operations, the containers are moved along conveying systems, usually in an upright position, with the opening of the container facing vertically up or down. The containers are moved from station to station where various operations are performed including, for example, filling, capping, labeling, sealing, and so forth. In a beverage operation in particular, it is important that the containers move without hindrance along the conveyor such that no liquid is spilled onto the conveyor during the times when the containers are open. This is especially important for dairy based beverages such as milk because milk can coagulate on the equipment surfaces. Lubricants are thus commonly used to ensure the appropriate movement of the containers on the conveyor.
- Lubricant compositions are used on conveying systems in the beverage industry during the filling of containers with dairy products or other beverages.
- the conveyor systems are typically lubricated to reduce friction between the package and the load bearing surface of the conveyor.
- These lubricants are typically applied to the conveyor belts and/or the containers to reduce friction between the container and the conveyor. This facilitates unhindered conveyance of bottles on the conveyor belt.
- These lubricants may also be referred to as chain conveyor or belt lubricants.
- the beverages are packaged in containers of varying sizes, such containers being in the form of cartons, cans, bottles, tetrapack packages, waxed carton packs, and other forms of containers.
- the containers in addition to their many possible formats and constructions, may comprise many different types of materials, such as metals, glasses, ceramics, papers, treated papers, waxed papers, composites, layered structures, and polymeric materials.
- Polymeric materials are commonly used in the beverage industry. Examples of commonly used polymeric materials include, polyolefins such as polyethylene, polypropylene, polystyrene, copolymers thereof; polyesters and copolymers thereof such as polyethyleneterephthalate and polyethylenenaphthalate; polyamides and copolymers thereof; polycarbonates and copolymers thereof; and so forth and mixtures thereof.
- Some aqueous conveyor lubricants are incompatible with thermoplastic beverage containers made of polyethylene terephthalate (PET) and other plastics, for example, and can cause stress cracking (crazing and cracking that occurs when the plastic polymer is under tension) in carbonated beverage filled plastic containers.
- PET polyethylene terephthalate
- other plastics for example, and can cause stress cracking (crazing and cracking that occurs when the plastic polymer is under tension) in carbonated beverage filled plastic containers.
- the present invention relates to a lubricant composition that reduces the coefficient of friction of coated conveyor parts and containers and thereby facilitates movement of containers along a conveyor line, and to methods of making and using the same.
- the present invention relates to lubricants with additives that provide improved corrosion resistance to metals as well as protection to polymeric containers against stress cracking and hazing.
- compositions according to the invention include at least one corrosion inhibitor which is an oxyalkylated alcohol carboxylic acid or salt thereof, suitably an oxalkylated alcohol dicarboxylic acid or salt thereof.
- the oxalkylated alcohol carboxylate is an ethoxylated linear alcohol carboxylic acid or salt thereof.
- POLYTERGENT® CS1 available from BASF which is an ethoxylated linear alcohol carboxylic acid.
- oxalkylated linear alcohol carboxylic acid or salt thereof such as POLYTERGENT® CS1
- POLYTERGENT® CS1 may be represented by the following general formula:
- R is a typical surfactant hydrophobe
- X and Y are independently H, CH 3 or a succinic acid radical.
- R may be a hydrocarbon group having from about 8 to about 20 carbon atoms, more typically about 9 to about 16 carbon atoms.
- the oxalkylated alcohol carboxylatic acid or salt thereof is useful in amounts of less than 20 wt-%, more suitably about 1 wt-% to about 15 wt-% and most suitably about 1 wt-% to about 10 wt-% of the composition.
- compositions further include an effective amount of at least one lubricant.
- the present invention is not limited by the type of lubricant employed herein, and any lubricant known in the art may be used.
- suitable lubricants include, but are not limited to, amines including amine acetates, primary, secondary and tertiary amines, diamines, and fatty amines; phosphate esters; anionic surfactants, cationic surfactants; nonionic surfactants including ethylene oxide/propylene oxide block copolymers; silicones including polymers, oils, and emulsions thereof; and so forth.
- block copolymer shall be used to refer to diblocks, triblocks and so forth.
- the lubricant compositions used in the invention may contain water or a hydrophilic diluent, as a component or components in the lubricant composition as sold or added just prior to use.
- compositions may be diluted with water at the time of use at a ratio of about 1:200 to about 1:1000, suitably about 1:600 to about 1:800 of the composition to water.
- compositions exhibit excellent corrosion inhibition for metals in the presence of hydrogen peroxide.
- Hydrogen peroxide may be employed in a variety of different types of compositions for a variety of different reasons, including, but not limited to, cleaning booster in hot caustic cleaning solutions, in dilute lubricant compositions as a biocide, as a bleaching agent, for the destruction of bleach, and so forth.
- peroxide is added as an adjunct chemical additive.
- Peroxide is not stable in solutions with a higher pH. It is effective as a booster for the removal of baked-on and carbonized soil. It may also be used to produce alkylamine oxide surfactants from alkylamines. It is, however, corrosive to metal such as steel.
- the additives according to the invention may be added to compositions, wherein hydrogen peroxide is employed, to inhibit the corrosion of metal.
- the additive for inhibiting corrosion of metals includes at least one oxalkylated alcohol carboxylic acid or salt thereof. These compounds are also referred to in the art as polycarboxylated alkylene oxide condensates of fatty alcohols.
- Oxalkylated alcohol carboxylic acids or salts thereof may be represented by the following general formula:
- R is a typical surfactant hydrophobe
- X and Y are independently H, CH 3 or a succinic acid radical.
- R may be a hydrocarbon group having from about 8 to about 20 carbon atoms, more typically about 9 to about 16 carbon atoms.
- POLYTERGENT® CS1 which is an ethoxylated linear alcohol dicarboxylic acid available from BASF Corp.
- the oxalkylated alcohol carboxylic acid or salt thereof may be used in amounts of less than about 20 wt-%, more suitably about 1 wt-% to about 15 wt-% and most suitably about 1 wt-% to about 10 wt-% of the composition.
- Any lubricants known in the art may find utility in the compositions of the present invention and including synthetic lubricants such as silicones, glycerin, petroleum based lubricants such as mineral oil, and natural lubricants including fatty oils and animal and vegetable oils including those which are edible.
- synthetic lubricants such as silicones, glycerin, petroleum based lubricants such as mineral oil, and natural lubricants including fatty oils and animal and vegetable oils including those which are edible.
- Lubricants may be natural or synthetic, and come in a variety of classes including, for example, amines, cationic, anionic and nonionic surfactants, phosphate esters, silicones, and so forth. Acids may come in a form which has been neutralized with a base such as potassium or sodium hydroxide.
- More specific examples include, but are not limited to, synthetic hydrocarbons; organic esters; high molecular weight alcohols; perfluoroalkylpolyethers (PFPE); silicates; silicones including polymers, oils and emulsions thereof; fluoropolymers such as chlorotrifluoroethylene; polyphenyl ethers; poly(alkylene) glycol(s) including polyethylene and polypropylene glycols; oxypolyalkylene glycols; copolymers of ethylene and propylene oxide, polyhydroxy compounds; ethoxylated amines; primary, secondary and tertiary amines; alkanolamines; fatty acid amines including N-coco B-Amino propionic acid amphoteric surfactant; perfluoroalkylpolyethers (PFPE); polyhydroxy compounds; and so forth and mixtures thereof.
- PFPE perfluoroalkylpolyethers
- ethylene oxide/propylene oxide block copolymers including triblock copolymers having the following general formulas find utility herein:
- EO represents ethylene oxide residue
- PO represents propylene oxide residue
- x, y, and z equal independently selected integers from about 2 to 100.
- PLURONIC® include PLURONIC® 10R5 and PLURONIC® G F108 which is an EO-PO-EO triblock polymer.
- Suitable lubricants are the ethoxylated alcohols.
- a specific example is TOMADOL® 45-13, an alcohol ethoxylate that includes a 14-15 carbon alcohol with 13 moles ethylene oxide. This is available from Tomah Products, Inc. in Milton, Wis.
- alkyl polyglucosides available from Cognis North America in Cincinnati, Ohio under the tradename of GLUCOPON® including GLUCOPON® 220, 225, 425, 600 and 625.
- useful lubricants include fatty acids or salts thereof such as oleic acid, corn oil, mineral oil available from Vulcan Oil and Chemical Products under the Bacchus® trademark; fluorinated oils and fluorinated greases, available from DuPont in Wilmington, Del.
- siloxane fluids available from General Electric silicones, such as SF96-5 and SF 1147 and other silicone emulsions; synthetic oils and their mixture with PTFE available from Synco Chemical under the trademark Super Lube®; polyalkylene glycols from Union Carbide such as UCON® LB625 and CARBOWAX® 300; block copolymer surfactants such as UCON® 50HB660 ethylene oxide(EO)/propylene oxide (PO) monobutyl ether; and so on and so forth.
- Krytox® siloxane fluids available from General Electric silicones, such as SF96-5 and SF 1147 and other silicone emulsions
- synthetic oils and their mixture with PTFE available from Synco Chemical under the trademark Super Lube®
- polyalkylene glycols from Union Carbide such as UCON® LB625 and CARBOWAX® 300
- block copolymer surfactants such as UCON® 50HB660 ethylene oxide(EO)/propylene oxide (PO)
- Lubricants are available in solid form as well. Examples include, but are not limited to, molybdenum disulfide, boron nitride, graphite, silica particles, silicone gums and particles, polytetrafluoroethylene (PTFE, Teflon), fluoroethylene-propylene copolymers (FEP), perfluoroalkoxy resins (PFA), ethylene-chloro-trifluoroethylene alternating copolymers (ECTFE), poly (vinylidene fluoride) (PVDF), and the like.
- the lubricant composition can also contain a solid lubricant as a suspension in a substantially aqueous or non-aqueous liquid.
- Lubricants are useful from about 1 wt-% to about 20 wt-% of the composition, suitably about 1 wt-% to about 10 wt-%.
- the lubricant compositions used in the invention may be available as concentrates, or as diluted use solutions.
- the lubricant compositions may contain water or a hydrophilic diluent, as a component or components in the lubricant composition as sold or added just prior to use.
- the lubricant composition does not require in-line dilution with significant amounts of water, that is, it can be applied with little or no dilution.
- the lubricant compositions include about 1 wt-% to about 90 wt-% water, and more suitably about 25 wt-% to about 85 wt-% and most suitably about 50 wt-% to about 85 wt-%.
- such compositions can be further diluted during use.
- the lubricant compositions may be diluted with water at a ratio of about 1:200 to about 1:1000, suitably about 1:600 to about 1:800 of the composition to water.
- compositions including, but not limited to, pH adjusters such as potassium or sodium hydroxide or other neutralizing agents, surfactants, emulsifiers, sequestrants, solubilizers, other lubricants, buffers such as potassium carbonate, detergents, bleaching or decolorizing agents, antioxidants, preservatives such as methyl and/or propyl paraben, antistatic agents, binders, thickeners or other viscosity modifiers, processing aids, carriers, water-conditioning agents, antimicrobial agents, foam inhibitors or foam generators, film formers, hydrotopes, also called coupling agents, combinations thereof, and so forth.
- pH adjusters such as potassium or sodium hydroxide or other neutralizing agents, surfactants, emulsifiers, sequestrants, solubilizers, other lubricants, buffers such as potassium carbonate, detergents, bleaching or decolorizing agents, antioxidants, preservatives such as methyl and/or propyl paraben, antistatic agents, bind
- compositions according to the invention have also been found to exhibit superior corrosion resistance, particularly hydrogen peroxide-containing compositions when employing the oxalkylated alcohol carboxylates as the protectant, and particularly when lower grades of steel, such as cold rolled steel, are exposed to such compositions. Hydrogen peroxide tends to aggravate corrosion of lower grade steel such as cold rolled steel.
- the cold rolled steel when exposed to the hydrogen peroxide-containing compositions with the oxalkylated alcohol carboxylates as the protectant, the cold rolled steel exhibited a weight loss of less than 0.2 wt % and even less than 0.1 wt %. Based on a starting weight of 23 g, the weight loss was about 5 mg, and even less than 2 mg, while prior compositions exhibited weight loss of as much as >120 mg.
- the lubricant compositions may be employed to lubricate the interface between a moving conveyor and any work piece that is moved along by the conveyor, and in particular for containers that are moved from one location to another.
- Such a method involves applying an aqueous liquid lubricant composition to the container, the conveyor, or both.
- the lubricant comprising an effective amount of at least one lubricant and at least one protectant and moving the container on the conveyor surface in order to transport the container from a first location to a second location.
- the present invention is particularly advantageous where the containers are filled with liquids prior to moving from one location to another, wherein it is desirable that the liquids are not spilled.
- the lubricant composition can be used for conveying a wide variety of containers including beverage containers; food containers; household or commercial cleaning product containers; and containers for oils, antifreeze or other industrial fluids.
- the containers can be made of a wide variety of materials including glasses; polymeric materials such as polyolefins including polyethylene and polypropylene and copolymers thereof; polystyrenes and copolymers thereof; polyesters and copolymers thereof such as PET and polyethylene naphthalate (PEN); polyamides and copolymers thereof; polycarbonates and copolymers thereof; and so on and so forth; metals including, for example aluminum, tin or steel; papers including untreated, treated, waxed or other coated papers or laminates thereof; ceramics; and laminates or composites of two or more of these materials.
- the containers can have a variety of sizes and forms, including cartons such as waxed cartons. TETRAPACK® boxes, cans, bottles and the like.
- the lubricant composition may be applied to the container and/or conveyor using any suitable means known in the art. Although any desired portion of the container can be coated with the lubricant composition, the lubricant composition is suitably applied only to parts of the container that will come into contact with the conveyor or with other containers, and suitably, the lubricant composition is not applied to parts that later come into contact with a user who grips or holds the container, or, if so applied, is preferably removed from such portion prior to shipment and sale of the container. Application of the lubricant composition to the conveyor, rather than the container, can alleviate problems of slipperiness with the latter.
- the surface of the conveyor that supports the containers may comprise fabric, metal, plastic, elastomer, composites, or mixture of these materials. Any type of conveyor system used in the field can be treated according to the present invention.
- the lubricant composition can be applied to a conveyor system surface that comes into contact with containers, the container surface that needs lubricity, or both.
- the lubricant composition can be applied in any desired manner, for example, by spraying, wiping, rolling, brushing, or a combination of any of these, to the conveyor surface and/or the container surface. If the container surface is coated, it is only necessary to coat the surfaces that come into contact with the conveyor, and/or that come into contact with other containers. Similarly, only portions of the conveyor that contacts the containers need to be treated. Methods of application are discussed in commonly assigned U.S. Pat. Nos. 6,576,298 and 6,495,494, for example, each of which is incorporated by reference herein in its entirety.
- a variety of kinds of conveyors and conveyor parts can be coated with the lubricant composition.
- Parts of the conveyor that support, guide, or move the containers are preferably coated with the lubricant composition.
- These parts include belts, chains, gates, chutes, sensors, and ramps having surfaces made of fabrics, metals, plastics, composites, or combinations of these materials.
- the additives find utility for the protection of polymeric articles to prevent hazing and stress cracking. This is especially a concern when the polymeric articles are exposed to alkaline conditions.
- the additives also find utility in any composition having hydrogen peroxide or under any circumstances where metal such as steel comes into contact with hydrogen peroxide.
- the additives, according to the invention find utility, not only in lubricant compositions, but in cleaning compositions, particularly hot caustic cleaning compositions, bleaches, and so forth.
- peroxide is added as an adjunct chemical additive. Peroxide becomes less stable at a higher pH such as at those pH values of greater than 7.
- Standard 2-liter PET beverage bottles (commercially available from Constar International) were charged with 1850 g of chilled water, 31.0 g of sodium bicarbonate and 31.0 g of citric acid. The charged bottle was capped, rinsed with deionized water and set on clean plastic liners or paper towels overnight. The bottoms of 12 bottles were dipped in a 200 g sample of 0.5% lube solution that was prepared using DI water with 200 ppm added alkalinity. The bottles were then placed in a bin and 85.2 g of the lube solution is evenly distributed to the bottom of the bin. The bottles/bin were stored in an environmental chamber at 37.8° C., 90% relative humidity for 28 days. Burst bottles were tracked throughout the test. At the end of the test the bottles were removed from the chamber, observed for crazes, creases and crack patterns on the bottom.
- the corrosion test is based on test method ASTM 3.02, G31-72 and 3.02 G1-90.
- Coupons of cold rolled steel and stainless steel were cleaned using Bon-Ami cleanser, rinsed with deionized water, rinsed with acetone, and dried with canned air. The coupons were set in wood drying racks overnight. Each coupon was then weighed on an analytical balance to 0.1 mg. Each coupon originally weighed approximately 23 g.
- Post-cleaning of the cold rolled steel coupons included rinsing each coupon after removal from the jar and then soaking each coupon for 3 minutes at room temperature in a 100 mls of a solution of 20 g of Sb2O3, 50 g of SnCl2 and 1000 mL HCl in a 150 mL beaker. Each coupon was then removed from the cleaning solution, rinsed with deionized water, rinsed with acetone, and dried with canned air. The coupons were then set in the wood drying racks and were weighed when all coupons had been cleaned and dried.
- Post-cleaning of the 316 stainless steel coupons included rinsing each coupon after removal from the jar and then placing the coupons in a stainless steel rack.
- the rack was then lowered into a large beaker with a solution of 150 g diammonium citrate/liter water.
- the beaker was then placed in an oven at 70° C. for 20 minutes.
- the metal rack was removed from the solution and each coupon was rinsed with deionized water, rinsed with acetone, and dried with canned air.
- the coupons were then set in the wood drying racks and were weighed when all coupons had been cleaned.
- the weight loss was calculated for each coupon by subtracting the final weight from the initial weight, and adjusting the weight loss by adding back or by subtracting any weight loss/gain that occurred during exposure of the coupons to air in the oven.
- the air samples were used as blanks so that the only weight loss/gain is due solely to corrosion in the test solutions and is not due to weight loss/gain due to the post-cleaning procedure.
- Example A Tomadol ® C 14-15 alcohol/13 5.00 5.00 5.00 45-13 (Tomah moles ethylene Products, Inc.) oxide; lubricant Pluronic ® EO-PO-EO 3.00 3.00 3.00 10R5 (BASF) triblock polymer; lubricant Glucopon ® Alkyl 1.00 1.00 1.00 625 (Cognis polyglucoside North America) surfactant; lubricant Hydrogen cleaner 5.70 5.70 5.70 Peroxide; 35% Polytergent ® dicarboxylated 10.0 20.00 0 CS1; 50% ethoxylated (BASF) alcohol; protectant DI Water 75.3 65.3 85.3
- Example 1 The amount of POLYTERGENT® CS1 was doubled from the amount in example 1. This is comparative example A. Comparative example B was prepared with no protectant. Example 1 and comparative examples A and B were then tested using the PET Stress Crack test described above. Example 1 exhibited only 1 failure in 24 total tests, comparative example A, at higher levels of Polytergent® CS1, exhibited 5 failures and comparative example B exhibited 4 failures out of 24.
- a base formula was employed for preparing various compositions which were then tested for corrosion inhibition of metals.
- the base composition is also comparative example A and is considered to be an industry standard.
- To the base formula several different compounds were added.
- the compositions as well as the results of the testing are found in Table 4, below. The corrosion resistance was tested using the test method described above.
- the base composition was the following.
- Example 1 was compared to a variety of compositions for corrosion to metal in the presence of hydrogen peroxide.
- the compositions and results are summarized in Table 5 as follows: TABLE 4 CR 1018 CR 1018 316 SSCorrosion Corrosion Corrosion Wt Loss Wt Loss Wt Loss Product (mg) (mg) % Comparative E Base Composition 0 80 0.349 Comparative F Lubrodrive RX 0.025 32.6 0.145 Example 1 0.9 1.7 0.007 Comparative G BC + 10% Dowfax 8390 0.85* 50.2 0.218 Comparative H BC + 20% LBA 0.8 54.85 0.239 Comparative I BC + 10% Avanel S74 skip 102.4 0.448 Comparative J BC + 5% SLS skip 128.2 0.598 Comparative K BC + 10% LAS 0.55 76.15 0.331 Comparative L BC + 10% Sandopan DTC skip 98.05 0.434 Comparative M BC + 10% Acusol 445N skip 79.
- Example 1 exhibited the lowest degree of weight loss of any of the compositions, including the industry standard, Lubrodrive® RX. TABLE 5 Chemical Comparative Tradename Description O (wt-%)
- Example 3 Calcium chloride 1.0 1.0 1.0 Oleyl 7.5 7.5 7.5 diaminopropane Lauryl propyl 3.0 3.0 3.0 diamine Dimethyl lauryl 4.5 4.5 4.5 amine Acetic acid; 80% 8.04 8.04 8.04 Polyethylene 3.0 3.0 3.0 glycol coco amine Isotridecyl alcohol- 9.0 9.0 9.0 9 mole ethoxylate Sodium hydroxide; 1.65 1.65 1.65 50% Poly dicarboxylated — 5.0 10.0 Tergent ® ethoxylated CS-1 alcohol; protectant DI water 62.31 57.31 52.31
Abstract
A lubricant composition which protects polymeric articles, and which also inhibits corrosion of metal, the composition including at least one oxyalkylated alcohol carboxylatic acid or salt thereof, and methods of using the same. The composition is advantageous where hydrogen peroxide is also present.
Description
- This is a continuation-in-part of U.S. patent application Ser. No. 10/664265 filed Sep. 17, 2003 which claims the benefit of U.S. Provisional Patent Application Ser. No. 60/411937 filed Sep. 18, 2002.
- The present invention relates to conveyor lubricant compositions and to methods of using the same.
- In commercial container filling or packaging operations, the containers typically are moved by a conveying system at very high rates of speed. In most packaging operations, the containers are moved along conveying systems, usually in an upright position, with the opening of the container facing vertically up or down. The containers are moved from station to station where various operations are performed including, for example, filling, capping, labeling, sealing, and so forth. In a beverage operation in particular, it is important that the containers move without hindrance along the conveyor such that no liquid is spilled onto the conveyor during the times when the containers are open. This is especially important for dairy based beverages such as milk because milk can coagulate on the equipment surfaces. Lubricants are thus commonly used to ensure the appropriate movement of the containers on the conveyor.
- Lubricant compositions are used on conveying systems in the beverage industry during the filling of containers with dairy products or other beverages. The conveyor systems are typically lubricated to reduce friction between the package and the load bearing surface of the conveyor. These lubricants are typically applied to the conveyor belts and/or the containers to reduce friction between the container and the conveyor. This facilitates unhindered conveyance of bottles on the conveyor belt. These lubricants may also be referred to as chain conveyor or belt lubricants.
- Good lubricating properties are not the only important considerations when selecting a lubricant for use in the beverage bottling industry. Another consideration is that the lubricant be compatible with the beverage such that it does not form coagulates or other solid deposits when it accidentally contacts spilled beverages on the conveyor system. Formation of such deposits on a conveyor can change the lubricity of the conveyor and require shutdown to permit cleanup. The lubricant must also be readily cleaned from the equipment.
- In the commercial distribution of most beverages, the beverages are packaged in containers of varying sizes, such containers being in the form of cartons, cans, bottles, tetrapack packages, waxed carton packs, and other forms of containers. The containers, in addition to their many possible formats and constructions, may comprise many different types of materials, such as metals, glasses, ceramics, papers, treated papers, waxed papers, composites, layered structures, and polymeric materials.
- Polymeric materials are commonly used in the beverage industry. Examples of commonly used polymeric materials include, polyolefins such as polyethylene, polypropylene, polystyrene, copolymers thereof; polyesters and copolymers thereof such as polyethyleneterephthalate and polyethylenenaphthalate; polyamides and copolymers thereof; polycarbonates and copolymers thereof; and so forth and mixtures thereof. Some aqueous conveyor lubricants are incompatible with thermoplastic beverage containers made of polyethylene terephthalate (PET) and other plastics, for example, and can cause stress cracking (crazing and cracking that occurs when the plastic polymer is under tension) in carbonated beverage filled plastic containers.
- There remains a need in the industry for an alternative to currently available lubricants for containers and conveyors that overcomes one or more of the disadvantages of currently used lubricants.
- The present invention relates to a lubricant composition that reduces the coefficient of friction of coated conveyor parts and containers and thereby facilitates movement of containers along a conveyor line, and to methods of making and using the same.
- The present invention relates to lubricants with additives that provide improved corrosion resistance to metals as well as protection to polymeric containers against stress cracking and hazing.
- The compositions according to the invention include at least one corrosion inhibitor which is an oxyalkylated alcohol carboxylic acid or salt thereof, suitably an oxalkylated alcohol dicarboxylic acid or salt thereof. In one embodiment, the oxalkylated alcohol carboxylate is an ethoxylated linear alcohol carboxylic acid or salt thereof. These compounds may also be referred to in the art as polycarboxylated alkylene oxide condensates of fatty alcohols.
- A specific example is POLYTERGENT® CS1 available from BASF which is an ethoxylated linear alcohol carboxylic acid.
-
- R is a typical surfactant hydrophobe, X and Y are independently H, CH3 or a succinic acid radical. For example, R may be a hydrocarbon group having from about 8 to about 20 carbon atoms, more typically about 9 to about 16 carbon atoms.
- Other useful dicarboxylic acids, triacarboxylic acids, and so forth useful herein are described in commonly assigned U.S. patent application Ser. No. 5,723,418, which is hereby incorporated by reference in its entirety. One example is SOKALAN® DCS, a mixture of adipic, glutaric and succinic acids, available from BASF.
- The oxalkylated alcohol carboxylatic acid or salt thereof is useful in amounts of less than 20 wt-%, more suitably about 1 wt-% to about 15 wt-% and most suitably about 1 wt-% to about 10 wt-% of the composition.
- The compositions further include an effective amount of at least one lubricant. The present invention is not limited by the type of lubricant employed herein, and any lubricant known in the art may be used. Examples of suitable lubricants include, but are not limited to, amines including amine acetates, primary, secondary and tertiary amines, diamines, and fatty amines; phosphate esters; anionic surfactants, cationic surfactants; nonionic surfactants including ethylene oxide/propylene oxide block copolymers; silicones including polymers, oils, and emulsions thereof; and so forth.
- As used herein, the term block copolymer, shall be used to refer to diblocks, triblocks and so forth.
- The lubricant compositions used in the invention may contain water or a hydrophilic diluent, as a component or components in the lubricant composition as sold or added just prior to use.
- The compositions may be diluted with water at the time of use at a ratio of about 1:200 to about 1:1000, suitably about 1:600 to about 1:800 of the composition to water.
- The compositions exhibit excellent corrosion inhibition for metals in the presence of hydrogen peroxide. Hydrogen peroxide may be employed in a variety of different types of compositions for a variety of different reasons, including, but not limited to, cleaning booster in hot caustic cleaning solutions, in dilute lubricant compositions as a biocide, as a bleaching agent, for the destruction of bleach, and so forth. When used in alkaline cleaning solutions, peroxide is added as an adjunct chemical additive. Peroxide is not stable in solutions with a higher pH. It is effective as a booster for the removal of baked-on and carbonized soil. It may also be used to produce alkylamine oxide surfactants from alkylamines. It is, however, corrosive to metal such as steel. The additives according to the invention may be added to compositions, wherein hydrogen peroxide is employed, to inhibit the corrosion of metal.
- Other aspects and advantages will become clear from the following Detailed Description.
- While this invention may be embodied in many different forms, there are described in detail herein specific embodiments of the invention. This description is an exemplification of the principles of the invention and is not intended to limit the invention to the particular embodiments illustrated.
- The additive for inhibiting corrosion of metals includes at least one oxalkylated alcohol carboxylic acid or salt thereof. These compounds are also referred to in the art as polycarboxylated alkylene oxide condensates of fatty alcohols.
-
- R is a typical surfactant hydrophobe, X and Y are independently H, CH3 or a succinic acid radical. For example, R may be a hydrocarbon group having from about 8 to about 20 carbon atoms, more typically about 9 to about 16 carbon atoms.
- A specific example is POLYTERGENT® CS1 which is an ethoxylated linear alcohol dicarboxylic acid available from BASF Corp.
- The oxalkylated alcohol carboxylic acid or salt thereof may be used in amounts of less than about 20 wt-%, more suitably about 1 wt-% to about 15 wt-% and most suitably about 1 wt-% to about 10 wt-% of the composition.
- Any lubricants known in the art may find utility in the compositions of the present invention and including synthetic lubricants such as silicones, glycerin, petroleum based lubricants such as mineral oil, and natural lubricants including fatty oils and animal and vegetable oils including those which are edible.
- Lubricants may be natural or synthetic, and come in a variety of classes including, for example, amines, cationic, anionic and nonionic surfactants, phosphate esters, silicones, and so forth. Acids may come in a form which has been neutralized with a base such as potassium or sodium hydroxide.
- More specific examples include, but are not limited to, synthetic hydrocarbons; organic esters; high molecular weight alcohols; perfluoroalkylpolyethers (PFPE); silicates; silicones including polymers, oils and emulsions thereof; fluoropolymers such as chlorotrifluoroethylene; polyphenyl ethers; poly(alkylene) glycol(s) including polyethylene and polypropylene glycols; oxypolyalkylene glycols; copolymers of ethylene and propylene oxide, polyhydroxy compounds; ethoxylated amines; primary, secondary and tertiary amines; alkanolamines; fatty acid amines including N-coco B-Amino propionic acid amphoteric surfactant; perfluoroalkylpolyethers (PFPE); polyhydroxy compounds; and so forth and mixtures thereof. This list is intended for illustrative purposes only, and is not intended to limit the scope of the present invention.
- The ethylene oxide/propylene oxide block copolymers including triblock copolymers having the following general formulas find utility herein:
- (EO)x(PO)y(PO)z
- wherein EO represents ethylene oxide residue, PO represents propylene oxide residue, and x, y, and z equal independently selected integers from about 2 to 100. These lubricants are available from BASF under the tradename of PLURONIC® and include PLURONIC® 10R5 and PLURONIC® G F108 which is an EO-PO-EO triblock polymer.
- Another example of suitable lubricants are the ethoxylated alcohols. A specific example is TOMADOL® 45-13, an alcohol ethoxylate that includes a 14-15 carbon alcohol with 13 moles ethylene oxide. This is available from Tomah Products, Inc. in Milton, Wis.
- Another specific example are the alkyl polyglucosides available from Cognis North America in Cincinnati, Ohio under the tradename of GLUCOPON® including GLUCOPON® 220, 225, 425, 600 and 625.
- Other specific examples of useful lubricants include fatty acids or salts thereof such as oleic acid, corn oil, mineral oil available from Vulcan Oil and Chemical Products under the Bacchus® trademark; fluorinated oils and fluorinated greases, available from DuPont in Wilmington, Del. under the trademark Krytox®; siloxane fluids available from General Electric silicones, such as SF96-5 and SF 1147 and other silicone emulsions; synthetic oils and their mixture with PTFE available from Synco Chemical under the trademark Super Lube®; polyalkylene glycols from Union Carbide such as UCON® LB625 and CARBOWAX® 300; block copolymer surfactants such as UCON® 50HB660 ethylene oxide(EO)/propylene oxide (PO) monobutyl ether; and so on and so forth.
- Lubricants are available in solid form as well. Examples include, but are not limited to, molybdenum disulfide, boron nitride, graphite, silica particles, silicone gums and particles, polytetrafluoroethylene (PTFE, Teflon), fluoroethylene-propylene copolymers (FEP), perfluoroalkoxy resins (PFA), ethylene-chloro-trifluoroethylene alternating copolymers (ECTFE), poly (vinylidene fluoride) (PVDF), and the like. The lubricant composition can also contain a solid lubricant as a suspension in a substantially aqueous or non-aqueous liquid.
- Lubricants are useful from about 1 wt-% to about 20 wt-% of the composition, suitably about 1 wt-% to about 10 wt-%.
- The above lists are not exhaustive, and are intended for illustrative purposes only, and not as a limitation on the scope of the present invention. One of ordinary skill in the art has knowledge of such lubricants. Suitable lubricants are described, for example, in commonly assigned U.S. Pat. Nos. 6,576,298, 5,925,610, 5,559,087 and 5,352,376, each of which is incorporated by reference herein in its entirety.
- The lubricant compositions used in the invention may be available as concentrates, or as diluted use solutions. As such, the lubricant compositions may contain water or a hydrophilic diluent, as a component or components in the lubricant composition as sold or added just prior to use. Suitably, the lubricant composition does not require in-line dilution with significant amounts of water, that is, it can be applied with little or no dilution.
- Suitably, the lubricant compositions include about 1 wt-% to about 90 wt-% water, and more suitably about 25 wt-% to about 85 wt-% and most suitably about 50 wt-% to about 85 wt-%. Of course, such compositions can be further diluted during use.
- The lubricant compositions may be diluted with water at a ratio of about 1:200 to about 1:1000, suitably about 1:600 to about 1:800 of the composition to water.
- A variety of other optional ingredients may be incorporated into the compositions including, but not limited to, pH adjusters such as potassium or sodium hydroxide or other neutralizing agents, surfactants, emulsifiers, sequestrants, solubilizers, other lubricants, buffers such as potassium carbonate, detergents, bleaching or decolorizing agents, antioxidants, preservatives such as methyl and/or propyl paraben, antistatic agents, binders, thickeners or other viscosity modifiers, processing aids, carriers, water-conditioning agents, antimicrobial agents, foam inhibitors or foam generators, film formers, hydrotopes, also called coupling agents, combinations thereof, and so forth. The amounts and types of such additional components are apparent to those skilled in the art.
- The compositions according to the invention have also been found to exhibit superior corrosion resistance, particularly hydrogen peroxide-containing compositions when employing the oxalkylated alcohol carboxylates as the protectant, and particularly when lower grades of steel, such as cold rolled steel, are exposed to such compositions. Hydrogen peroxide tends to aggravate corrosion of lower grade steel such as cold rolled steel. However, when exposed to the hydrogen peroxide-containing compositions with the oxalkylated alcohol carboxylates as the protectant, the cold rolled steel exhibited a weight loss of less than 0.2 wt % and even less than 0.1 wt %. Based on a starting weight of 23 g, the weight loss was about 5 mg, and even less than 2 mg, while prior compositions exhibited weight loss of as much as >120 mg.
- The lubricant compositions may be employed to lubricate the interface between a moving conveyor and any work piece that is moved along by the conveyor, and in particular for containers that are moved from one location to another. Such a method involves applying an aqueous liquid lubricant composition to the container, the conveyor, or both. The lubricant comprising an effective amount of at least one lubricant and at least one protectant and moving the container on the conveyor surface in order to transport the container from a first location to a second location.
- The present invention is particularly advantageous where the containers are filled with liquids prior to moving from one location to another, wherein it is desirable that the liquids are not spilled. For example, the lubricant composition can be used for conveying a wide variety of containers including beverage containers; food containers; household or commercial cleaning product containers; and containers for oils, antifreeze or other industrial fluids.
- The containers can be made of a wide variety of materials including glasses; polymeric materials such as polyolefins including polyethylene and polypropylene and copolymers thereof; polystyrenes and copolymers thereof; polyesters and copolymers thereof such as PET and polyethylene naphthalate (PEN); polyamides and copolymers thereof; polycarbonates and copolymers thereof; and so on and so forth; metals including, for example aluminum, tin or steel; papers including untreated, treated, waxed or other coated papers or laminates thereof; ceramics; and laminates or composites of two or more of these materials. The containers can have a variety of sizes and forms, including cartons such as waxed cartons. TETRAPACK® boxes, cans, bottles and the like.
- The lubricant composition may be applied to the container and/or conveyor using any suitable means known in the art. Although any desired portion of the container can be coated with the lubricant composition, the lubricant composition is suitably applied only to parts of the container that will come into contact with the conveyor or with other containers, and suitably, the lubricant composition is not applied to parts that later come into contact with a user who grips or holds the container, or, if so applied, is preferably removed from such portion prior to shipment and sale of the container. Application of the lubricant composition to the conveyor, rather than the container, can alleviate problems of slipperiness with the latter.
- The surface of the conveyor that supports the containers may comprise fabric, metal, plastic, elastomer, composites, or mixture of these materials. Any type of conveyor system used in the field can be treated according to the present invention. The lubricant composition can be applied to a conveyor system surface that comes into contact with containers, the container surface that needs lubricity, or both. The lubricant composition can be applied in any desired manner, for example, by spraying, wiping, rolling, brushing, or a combination of any of these, to the conveyor surface and/or the container surface. If the container surface is coated, it is only necessary to coat the surfaces that come into contact with the conveyor, and/or that come into contact with other containers. Similarly, only portions of the conveyor that contacts the containers need to be treated. Methods of application are discussed in commonly assigned U.S. Pat. Nos. 6,576,298 and 6,495,494, for example, each of which is incorporated by reference herein in its entirety.
- A variety of kinds of conveyors and conveyor parts can be coated with the lubricant composition. Parts of the conveyor that support, guide, or move the containers are preferably coated with the lubricant composition. These parts include belts, chains, gates, chutes, sensors, and ramps having surfaces made of fabrics, metals, plastics, composites, or combinations of these materials.
- The additives, according to the invention, find utility for the protection of polymeric articles to prevent hazing and stress cracking. This is especially a concern when the polymeric articles are exposed to alkaline conditions.
- The additives, according to the invention, also find utility in any composition having hydrogen peroxide or under any circumstances where metal such as steel comes into contact with hydrogen peroxide. The additives, according to the invention, find utility, not only in lubricant compositions, but in cleaning compositions, particularly hot caustic cleaning compositions, bleaches, and so forth. When used in alkaline cleaning solutions, peroxide is added as an adjunct chemical additive. Peroxide becomes less stable at a higher pH such as at those pH values of greater than 7.
- The following non-limiting examples further illustrate the present inventive concepts.
- Test Methods
- 1. PET Stress Crack Test
- Standard 2-liter PET beverage bottles (commercially available from Constar International) were charged with 1850 g of chilled water, 31.0 g of sodium bicarbonate and 31.0 g of citric acid. The charged bottle was capped, rinsed with deionized water and set on clean plastic liners or paper towels overnight. The bottoms of 12 bottles were dipped in a 200 g sample of 0.5% lube solution that was prepared using DI water with 200 ppm added alkalinity. The bottles were then placed in a bin and 85.2 g of the lube solution is evenly distributed to the bottom of the bin. The bottles/bin were stored in an environmental chamber at 37.8° C., 90% relative humidity for 28 days. Burst bottles were tracked throughout the test. At the end of the test the bottles were removed from the chamber, observed for crazes, creases and crack patterns on the bottom.
- 2. Corrosion Test
- The corrosion test is based on test method ASTM 3.02, G31-72 and 3.02 G1-90.
- Coupons of cold rolled steel and stainless steel were cleaned using Bon-Ami cleanser, rinsed with deionized water, rinsed with acetone, and dried with canned air. The coupons were set in wood drying racks overnight. Each coupon was then weighed on an analytical balance to 0.1 mg. Each coupon originally weighed approximately 23 g.
- Approximately 215 grams of each test solution was added to 8 ounce glass bottles labeled to identify the solution inside. The lubricant concentration was 0.5% for all solutions. The bottles were capped and placed in an oven at 50° C. overnight. One coupon was added to each jar and the jars were capped. The capped jars were returned to the oven at 50° C. Each coupon type was tested in triplicate for each solution type. The coupons were visually inspected each day for corrosion without removing them from the jars. The jars were left capped the entire testing period. One of each coupon type was soaked in each solution type for 7 days and two of each type of coupon were soaked in each solution type for 14 days.
- Post-cleaning of the cold rolled steel coupons included rinsing each coupon after removal from the jar and then soaking each coupon for 3 minutes at room temperature in a 100 mls of a solution of 20 g of Sb2O3, 50 g of SnCl2 and 1000 mL HCl in a 150 mL beaker. Each coupon was then removed from the cleaning solution, rinsed with deionized water, rinsed with acetone, and dried with canned air. The coupons were then set in the wood drying racks and were weighed when all coupons had been cleaned and dried.
- Post-cleaning of the 316 stainless steel coupons included rinsing each coupon after removal from the jar and then placing the coupons in a stainless steel rack. The rack was then lowered into a large beaker with a solution of 150 g diammonium citrate/liter water. The beaker was then placed in an oven at 70° C. for 20 minutes. After 20 minutes, the metal rack was removed from the solution and each coupon was rinsed with deionized water, rinsed with acetone, and dried with canned air. The coupons were then set in the wood drying racks and were weighed when all coupons had been cleaned. The weight loss was calculated for each coupon by subtracting the final weight from the initial weight, and adjusting the weight loss by adding back or by subtracting any weight loss/gain that occurred during exposure of the coupons to air in the oven. The air samples were used as blanks so that the only weight loss/gain is due solely to corrosion in the test solutions and is not due to weight loss/gain due to the post-cleaning procedure.
TABLE 1 Chemical Example 1 Comparative Comparative Description (wt-%) Example A Example B Tomadol ® C14-15 alcohol/13 5.00 5.00 5.00 45-13 (Tomah moles ethylene Products, Inc.) oxide; lubricant Pluronic ® EO-PO-EO 3.00 3.00 3.00 10R5 (BASF) triblock polymer; lubricant Glucopon ® Alkyl 1.00 1.00 1.00 625 (Cognis polyglucoside North America) surfactant; lubricant Hydrogen cleaner 5.70 5.70 5.70 Peroxide; 35% Polytergent ® dicarboxylated 10.0 20.00 0 CS1; 50% ethoxylated (BASF) alcohol; protectant DI Water 75.3 65.3 85.3 - The amount of POLYTERGENT® CS1 was doubled from the amount in example 1. This is comparative example A. Comparative example B was prepared with no protectant. Example 1 and comparative examples A and B were then tested using the PET Stress Crack test described above. Example 1 exhibited only 1 failure in 24 total tests, comparative example A, at higher levels of Polytergent® CS1, exhibited 5 failures and comparative example B exhibited 4 failures out of 24.
- A second example was prepared; the composition is found in Table 3.
TABLE 2 Chemical Description Example 2 Comp C Comp D Silicone emulsion Lubricant 5.0 5.0 5.0 PLURONIC ® EO-PO-EO 0.3 0.3 0.3 F108 (BASF) triblock polymer; lubricant Methyl Paraben Preservative 0.2 0.2 0.2 POLYTERGENT ® dicarboxylated 10.0 20.0 0 CS1; 50% (BASF) ethoxylated alcohol; protectant DI Water 84.5 74.5 94.5 - The amount of POLYTERGENT® CS1 was increased by 10% from the amount in example 2. This is comparative example C. Comparative example D was prepared with no protectant. These formulas were also tested according to the PET Stress Crack test described above. Example 2 exhibited 1 failure out of 24, comparative example C exhibited 6 failures out of 24 and comparative example D exhibited 4 failures out of 24.
- The results are found in the following table 3.
TABLE 3 Bottle Bottle Polytergent Bottle Grade Grade Overall CS1 Stress Test Craze Craze Bottle Weight-% #Failures/24 Depth Frequeny Grade Example 1 10 1 1.13 1.5 3.63 Comparative 20 5 1.94 2 8.94 Ex A Example 2 10 1 1.15 0.75 2.9 Comparative 20 6 2.23 1.5 9.73 Ex C - A base formula was employed for preparing various compositions which were then tested for corrosion inhibition of metals. The base composition is also comparative example A and is considered to be an industry standard. To the base formula, several different compounds were added. The compositions as well as the results of the testing are found in Table 4, below. The corrosion resistance was tested using the test method described above.
- The base composition was the following.
- Base Composition (BC)=Comparative Example E
- 5.0 wt-% Tomadol® 45-13; alcohol ethoxylate (Tomah Products, Inc.)
- 3.0 wt-% Pluronic® 10R5; ethylene oxide/propylene oxide block copolymer (BASF)
- 1.0 wt-% Glucopon® 625; alkyl polyglucoside (BASF)
- 5.7 wt-% hydrogen peroxide, 35% active
- 85.3 wt-% deionized water
- Example 1 was compared to a variety of compositions for corrosion to metal in the presence of hydrogen peroxide. The compositions and results are summarized in Table 5 as follows:
TABLE 4 CR 1018 CR 1018 316 SSCorrosion Corrosion Corrosion Wt Loss Wt Loss Wt Loss Product (mg) (mg) (mg) % Comparative E Base Composition 0 80 0.349 Comparative F Lubrodrive RX 0.025 32.6 0.145 Example 1 0.9 1.7 0.007 Comparative G BC + 10% Dowfax 8390 0.85* 50.2 0.218 Comparative H BC + 20% LBA 0.8 54.85 0.239 Comparative I BC + 10% Avanel S74 skip 102.4 0.448 Comparative J BC + 5% SLS skip 128.2 0.598 Comparative K BC + 10% LAS 0.55 76.15 0.331 Comparative L BC + 10% Sandopan DTC skip 98.05 0.434 Comparative M BC + 10% Acusol 445N skip 79.3 0.348 Comparative N BC + 10% Acusol 441 skip 96.75 0.422 - Example 1 exhibited the lowest degree of weight loss of any of the compositions, including the industry standard, Lubrodrive® RX.
TABLE 5 Chemical Comparative Tradename Description O (wt-%) Example 3 Example 4 Calcium chloride 1.0 1.0 1.0 Oleyl 7.5 7.5 7.5 diaminopropane Lauryl propyl 3.0 3.0 3.0 diamine Dimethyl lauryl 4.5 4.5 4.5 amine Acetic acid; 80% 8.04 8.04 8.04 Polyethylene 3.0 3.0 3.0 glycol coco amine Isotridecyl alcohol- 9.0 9.0 9.0 9 mole ethoxylate Sodium hydroxide; 1.65 1.65 1.65 50% Poly dicarboxylated — 5.0 10.0 Tergent ® ethoxylated CS-1 alcohol; protectant DI water 62.31 57.31 52.31 - The above compositions were tested according to test method no. 1 described above. The results are found in table 6.
TABLE 6 Failures (#/24) Grade Comparative Ex O Amine acetate 3 1.88 lubricant Example 3 Amine acetate 0 1.54 lubricant with 5% protectant Example 4 Amine acetate 0 1.17 lubricant with 10% protectant - The dicarboxylated ethoxylated alcohol protectant was tested in combination with an alternative lubricant which was based on the sodium salt of a fatty acid. The following table shows the formulas employed.
TABLE 7 Trade- Chemical Comparative Comparative Comparative name Description P (Wt-%) Q R Propylene glycol 14.98 14.98 14.98 Na salt of oleic 20.00 20.00 20.00 acid Potassium 8.48 8.48 8.48 hydroxide; 45% Poly dicarboxylated 0 5.0 10.0 Tergent ® ethoxylated CS-1 alcohol; protectant DI water 56.54 51.54 46.54 - The compositions were tested according to test method no. 1 described above. The results are shown in table 8.
TABLE 8 Failures (#/24) Grade Comparative P Fatty acid lubricant 4 1.25 Comparative Q Fatty acid lubricant 3 1.35 with 5% protectant Comparative R Fatty acid lubricant 2 1.63 with 105 protectant - While the fatty acid based lubricant composition exhibited improvement using a protectant in contrast to the fatty acid lubricant with no protectant, the results were not as good as with other types of lubricants.
- The above disclosure is intended to be illustrative and not exhaustive. The description will suggest many variations and alternatives to those of ordinary skill in the art. All of these alternatives and variations are intended to be included within the scope of the attached claims. Equivalents to these specific examples should also be encompassed by the attached claims.
Claims (63)
1. A composition comprising at least one oxalkylated alcohol carboxylic acid or salt thereof, wherein said composition inhibits the corrosion of metal in the presence of hydrogen peroxide.
2. The composition of claim 1 wherein said metal is cold rolled steel or stainless steel.
3. The composition of claim 2 wherein said metal exhibits less than 0.2% weight loss upon exposure to said composition.
4. The composition of claim 1 , said composition comprising about 1 wt-% to about 10 wt-% hydrogen peroxide.
5. The composition of claim 1 , said composition comprising about 1 wt-% to about 5 wt-% hydrogen peroxide.
6. The composition of claim 1 , said composition comprising about 1 wt-% to about 15 wt-% of said oxalkylated alcohol carboxylic acid or salt thereof.
7. The composition of claim 1 , said composition comprising about 1 wt-% to about 10 wt-% of said oxalkylated alcohol carboxylic acid or salt thereof.
8. The composition of claim 1 diluted between about 1:200 to about 1:1000 of said composition to water.
9. The composition of claim 1 diluted between about 1:600 to about 1:800 of said composition to water.
10. The composition of claim 1 wherein hydrogen peroxide is added to said composition.
11. The composition of claim 1 further comprising at least one of sodium hydroxide or potassium hydroxide.
12. The composition of claim 1 further comprising at least one member selected from the group consisting of pH adjusters or other neutralizing agents, surfactants, emulsifiers, sequestrants, solubilizers, other lubricants, buffers, detergents, bleaching or decolorizing agents, antioxidants, preservatives, antistatic agents, binders, thickeners or other viscosity modifiers, processing aids, carriers, water-conditioning agents, antimicrobial agents, foam inhibitors or foam generators, film formers and combinations thereof.
13. The composition of claim 1 further comprising at least one lubricant selected from the group consisting of amines, nonionic surfactants, phosphate esters, silicones, and mixtures thereof.
14. The composition of claim 1 further comprising at least one lubricant is an ethylene oxide/propylene oxide block copolymer.
15. The composition of claim 1 wherein said at least one lubricant is oleic acid or a salt thereof.
16. A composition comprising at least one oxalkylated alcohol carboxylic acid or salt thereof, said composition inhibits the corrosion of metal in the presence of hydrogen peroxide.
17. The composition of claim 16 wherein said metal is cold rolled steel or stainless steel.
18. The composition of claim 17 wherein said metal loses less than about 0.2% of its weight in the presence of hydrogen peroxide.
19. The composition of claim 16 wherein said hydrogen peroxide is present from about 1 wt-% to about 10 wt-%.
20. The composition of claim 16 wherein said oxalkylated alcohol carboxylic acid or salt thereof is present at a concentration of about 1 wt-% to about 15 wt-%.
21. The composition of claim 16 further diluted between about 1:200 to about 1:1000 of said composition to water.
22. The composition of claim 16 further diluted between about 1:600 to about 1:800 of said composition to water.
23. A lubricant composition for containers and/or conveyors comprising an effective amount of at least one lubricant and at least one oxyalkylated alcohol carboxylic acid or salt thereof.
24. The lubricant composition of claim 23 further comprising hydrogen peroxide.
25. The lubricant composition of claim 23 wherein said at least one lubricant is selected from the group consisting of fatty amines, nonionic surfactants, phosphate esters, silicones, and mixtures thereof.
26. The lubricant composition of claim 23 further comprising at least one lubricant which is an ethylene oxide/propylene oxide block copolymer.
27. The lubricant composition of claim 23 wherein said at least one lubricant is oleic acid or a salt thereof.
28. The composition of claim 23 wherein said oxyalkylated alcohol carboxylic acid or salt thereof is an ethoxylated alcohol dicarboxylic acid.
29. The composition of claim 23 comprising about 1 wt-% to about 15 wt-% of said oxalkylated alcohol carboxylic acid or salt thereof.
30. The composition of claim 23 further diluted at a ratio between about 1:200 to about 1:1000 of said composition to water.
31. The composition of claim 23 further diluted at a ratio of about 1:600 to about 1:800 of said composition to water.
32. The composition of claim 23 wherein said composition inhibits corrosion of metal in the presence of hydrogen peroxide
33. The composition of claim 32 wherein the metal is cold rolled steel or stainless steel.
34. The composition of claim 33 wherein said metal exhibits a weight loss of less than 0.2 wt-% based on initial weight before exposure to hydrogen peroxide.
35. The composition of claim 23 said composition having a pH greater than 7.
36. The composition of claim 23 further comprising at least one member selected from the group consisting of pH adjusters or other neutralizing agents, surfactants, emulsifiers, sequestrants, solubilizers, other lubricants, buffers, detergents, bleaching or decolorizing agents, antioxidants, preservatives, antistatic agents, binders, thickeners or other viscosity modifiers, processing aids, carriers, water-conditioning agents, antimicrobial agents, foam inhibitors or foam generators, film formers and combinations thereof.
37. The composition of claim 23 further comprising about 1 wt-% to about 90 wt-% water.
38. The composition of claim 23 further comprising about 50 wt-% to about 85 wt-% water.
39. A method of lubricating the interface between a container and a moving conveyor surface, the method comprising:
(a) applying an aqueous lubricant composition to the container, the conveyor or both, the lubricant comprising an effective amount of at least one lubricant and at least one oxalkylated alcohol carboxylic acid or salt thereof; and
(b) moving the container on the conveyor surface in order to transport the container from a first location to a second location.
40. The method of claim 40 wherein said lubricant has a pH greater than 7.
41. The method of claim 40 wherein said lubricant is effective in an alkaline environment of about 200 ppm alkalinity.
42. The method of claim 40 wherein said container is a liquid beverage container.
43. The method of claim 42 wherein said beverage container is filled with said liquid beverage.
44. The method of claim 42 wherein said beverage container is polyolefin, polyester, polycarbonate, PVC or copolymers thereof.
45. The method of claim 40 wherein said composition inhibits corrosion of metal.
46. The method of claim 40 wherein said lubricant composition further comprises hydrogen peroxide.
47. The method of claim 45 wherein said metal is cold rolled steel or stainless steel.
48. The method of claim 40 wherein said composition exhibits protection of polymeric articles.
49. The method of claim 48 wherein said polymeric articles are formed from polyester, polyolefins, polycarbonates, copolymers thereof and mixtures thereof.
50. The method of claim 49 wherein said polymeric articles are formed from polyethylene terephthalate or polybutylene terephthalate.
51. The method of claim 48 wherein said polymeric articles exhibit minimal stress cracking or hazing.
52. A method of protecting a polymeric article of manufacture by coating at least a portion of the surface of said polymeric article with a lubricating composition, said composition comprising an effective amount of at least one lubricant and at least one oxalkylated alcohol carboxylic acid or salt thereof.
53. The method of claim 52 wherein said polymeric article is formed from at least one member selected from the group consisting of polyolefins, polyesters, polycarbonates, copolymers thereof and mixtures thereof.
54. The method of claim 53 wherein said polymeric article is formed form polyethylene terephthalate or polybutylene terephthalate.
55. The method of claim 52 wherein said polymeric article is a beverage container.
56. The method of claim 52 wherein said lubricating composition comprises about 1 wt-% to about 15 wt-% of said oxalkylated alcohol carboxylic acid or salt thereof.
57. The method of claim 52 wherein said lubrication composition comprises about 1 wt-% to about 10 wt-% of said oxalkylated alcohol carboxylic acid or salt thereof.
58. The method of claim 52 wherein said oxalkylated alcohol carboxylate is an ethoxylated alcohol dicarboxylic acid or salt thereof.
59. The method of claim 52 wherein said lubricating composition further comprises about 1 wt-% to about 90 wt-% water.
60. The method of claim 52 wherein said lubricating composition further comprises about 50 wt-% to about 85 wt-% water.
61. The method of claim 52 wherein said lubricating composition is further diluted at a ratio of about 1:200 to about 1:1000 of said composition to water.
62. The method of claim 52 wherein said lubricating composition is further diluted at a ratio of about 1:600 to about 1:800 of said composition to water.
63. The method of claim 52 wherein said composition further comprises hydrogen peroxide.
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US10/877,076 US20040235680A1 (en) | 2002-09-18 | 2004-06-24 | Conveyor lubricant with corrosion inhibition |
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