US2739871A - Composition and sheet material for inhibition of corrosion of metals - Google Patents
Composition and sheet material for inhibition of corrosion of metals Download PDFInfo
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- US2739871A US2739871A US185142A US18514250A US2739871A US 2739871 A US2739871 A US 2739871A US 185142 A US185142 A US 185142A US 18514250 A US18514250 A US 18514250A US 2739871 A US2739871 A US 2739871A
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- United States
- Prior art keywords
- nitrite
- group
- phenyl acetic
- hydroxy
- urea
- Prior art date
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- Expired - Lifetime
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- 239000000203 mixture Substances 0.000 title claims description 29
- 229910052751 metal Inorganic materials 0.000 title claims description 18
- 239000002184 metal Substances 0.000 title claims description 18
- 238000005260 corrosion Methods 0.000 title description 26
- 230000007797 corrosion Effects 0.000 title description 26
- 230000005764 inhibitory process Effects 0.000 title description 11
- 239000000463 material Substances 0.000 title description 10
- 150000002739 metals Chemical class 0.000 title description 2
- -1 2-ETHYL Chemical class 0.000 claims description 36
- 230000002401 inhibitory effect Effects 0.000 claims description 33
- 239000004615 ingredient Substances 0.000 claims description 24
- IOVCWXUNBOPUCH-UHFFFAOYSA-M Nitrite anion Chemical compound [O-]N=O IOVCWXUNBOPUCH-UHFFFAOYSA-M 0.000 claims description 19
- 150000003863 ammonium salts Chemical class 0.000 claims description 14
- 239000012808 vapor phase Substances 0.000 claims description 14
- WLJVXDMOQOGPHL-UHFFFAOYSA-N phenylacetic acid Chemical compound OC(=O)CC1=CC=CC=C1 WLJVXDMOQOGPHL-UHFFFAOYSA-N 0.000 claims description 13
- 150000001408 amides Chemical class 0.000 claims description 10
- 150000003857 carboxamides Chemical class 0.000 claims description 9
- 150000001735 carboxylic acids Chemical class 0.000 claims description 9
- BDJRBEYXGGNYIS-UHFFFAOYSA-N nonanedioic acid Chemical compound OC(=O)CCCCCCCC(O)=O BDJRBEYXGGNYIS-UHFFFAOYSA-N 0.000 claims description 8
- 159000000032 aromatic acids Chemical class 0.000 claims description 7
- 229910052736 halogen Inorganic materials 0.000 claims description 7
- 150000002367 halogens Chemical group 0.000 claims description 7
- WWZKQHOCKIZLMA-UHFFFAOYSA-N octanoic acid Chemical compound CCCCCCCC(O)=O WWZKQHOCKIZLMA-UHFFFAOYSA-N 0.000 claims description 7
- 150000003839 salts Chemical class 0.000 claims description 6
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical group [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxide Chemical class [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 claims 1
- 235000013877 carbamide Nutrition 0.000 description 26
- 239000004202 carbamide Substances 0.000 description 24
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 description 23
- LPXPTNMVRIOKMN-UHFFFAOYSA-M sodium nitrite Chemical compound [Na+].[O-]N=O LPXPTNMVRIOKMN-UHFFFAOYSA-M 0.000 description 20
- WPYMKLBDIGXBTP-UHFFFAOYSA-N benzoic acid Chemical compound OC(=O)C1=CC=CC=C1 WPYMKLBDIGXBTP-UHFFFAOYSA-N 0.000 description 14
- 150000001412 amines Chemical class 0.000 description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 11
- 235000010288 sodium nitrite Nutrition 0.000 description 10
- UAOMVDZJSHZZME-UHFFFAOYSA-N diisopropylamine Chemical compound CC(C)NC(C)C UAOMVDZJSHZZME-UHFFFAOYSA-N 0.000 description 9
- 125000004432 carbon atom Chemical group C* 0.000 description 8
- FUZZWVXGSFPDMH-UHFFFAOYSA-N hexanoic acid Chemical class CCCCCC(O)=O FUZZWVXGSFPDMH-UHFFFAOYSA-N 0.000 description 8
- OBETXYAYXDNJHR-UHFFFAOYSA-N 2-Ethylhexanoic acid Chemical compound CCCCC(CC)C(O)=O OBETXYAYXDNJHR-UHFFFAOYSA-N 0.000 description 7
- 238000004519 manufacturing process Methods 0.000 description 7
- 229910052783 alkali metal Inorganic materials 0.000 description 6
- IPCSVZSSVZVIGE-UHFFFAOYSA-N palmitic acid group Chemical group C(CCCCCCCCCCCCCCC)(=O)O IPCSVZSSVZVIGE-UHFFFAOYSA-N 0.000 description 6
- 239000005711 Benzoic acid Substances 0.000 description 5
- 235000010233 benzoic acid Nutrition 0.000 description 5
- 150000002826 nitrites Chemical class 0.000 description 5
- 239000007787 solid Substances 0.000 description 5
- DLFVBJFMPXGRIB-UHFFFAOYSA-N Acetamide Chemical compound CC(N)=O DLFVBJFMPXGRIB-UHFFFAOYSA-N 0.000 description 4
- ZRALSGWEFCBTJO-UHFFFAOYSA-N Guanidine Chemical compound NC(N)=N ZRALSGWEFCBTJO-UHFFFAOYSA-N 0.000 description 4
- CAMXVZOXBADHNJ-UHFFFAOYSA-N ammonium nitrite Chemical compound [NH4+].[O-]N=O CAMXVZOXBADHNJ-UHFFFAOYSA-N 0.000 description 4
- 150000001732 carboxylic acid derivatives Chemical class 0.000 description 4
- 150000001734 carboxylic acid salts Chemical class 0.000 description 4
- LYRFLYHAGKPMFH-UHFFFAOYSA-N octadecanamide Chemical compound CCCCCCCCCCCCCCCCCC(N)=O LYRFLYHAGKPMFH-UHFFFAOYSA-N 0.000 description 4
- 239000002904 solvent Substances 0.000 description 4
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 3
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 3
- 239000002253 acid Substances 0.000 description 3
- 125000001931 aliphatic group Chemical group 0.000 description 3
- 125000003118 aryl group Chemical group 0.000 description 3
- 239000000969 carrier Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000003112 inhibitor Substances 0.000 description 3
- 239000005871 repellent Substances 0.000 description 3
- 229910052708 sodium Inorganic materials 0.000 description 3
- 239000011734 sodium Substances 0.000 description 3
- WUGCLPOLOCIDHW-UHFFFAOYSA-N 2-aminoethanol;benzoic acid Chemical compound [NH3+]CCO.[O-]C(=O)C1=CC=CC=C1 WUGCLPOLOCIDHW-UHFFFAOYSA-N 0.000 description 2
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 description 2
- KXDAEFPNCMNJSK-UHFFFAOYSA-N Benzamide Chemical compound NC(=O)C1=CC=CC=C1 KXDAEFPNCMNJSK-UHFFFAOYSA-N 0.000 description 2
- KHBQMWCZKVMBLN-UHFFFAOYSA-N Benzenesulfonamide Chemical compound NS(=O)(=O)C1=CC=CC=C1 KHBQMWCZKVMBLN-UHFFFAOYSA-N 0.000 description 2
- CHJJGSNFBQVOTG-UHFFFAOYSA-N N-methyl-guanidine Natural products CNC(N)=N CHJJGSNFBQVOTG-UHFFFAOYSA-N 0.000 description 2
- ZMANZCXQSJIPKH-UHFFFAOYSA-N Triethylamine Chemical class CCN(CC)CC ZMANZCXQSJIPKH-UHFFFAOYSA-N 0.000 description 2
- AZFNGPAYDKGCRB-XCPIVNJJSA-M [(1s,2s)-2-amino-1,2-diphenylethyl]-(4-methylphenyl)sulfonylazanide;chlororuthenium(1+);1-methyl-4-propan-2-ylbenzene Chemical compound [Ru+]Cl.CC(C)C1=CC=C(C)C=C1.C1=CC(C)=CC=C1S(=O)(=O)[N-][C@@H](C=1C=CC=CC=1)[C@@H](N)C1=CC=CC=C1 AZFNGPAYDKGCRB-XCPIVNJJSA-M 0.000 description 2
- 150000007513 acids Chemical class 0.000 description 2
- GDTBXPJZTBHREO-UHFFFAOYSA-N bromine Chemical compound BrBr GDTBXPJZTBHREO-UHFFFAOYSA-N 0.000 description 2
- CNWSQCLBDWYLAN-UHFFFAOYSA-N butylurea Chemical compound CCCCNC(N)=O CNWSQCLBDWYLAN-UHFFFAOYSA-N 0.000 description 2
- 239000000460 chlorine Substances 0.000 description 2
- NZNMSOFKMUBTKW-UHFFFAOYSA-N cyclohexanecarboxylic acid Chemical compound OC(=O)C1CCCCC1 NZNMSOFKMUBTKW-UHFFFAOYSA-N 0.000 description 2
- 230000008021 deposition Effects 0.000 description 2
- 150000001470 diamides Chemical class 0.000 description 2
- 235000014113 dietary fatty acids Nutrition 0.000 description 2
- SWSQBOPZIKWTGO-UHFFFAOYSA-N dimethylaminoamidine Natural products CN(C)C(N)=N SWSQBOPZIKWTGO-UHFFFAOYSA-N 0.000 description 2
- 239000006185 dispersion Substances 0.000 description 2
- 229930195729 fatty acid Natural products 0.000 description 2
- 239000000194 fatty acid Substances 0.000 description 2
- 150000004665 fatty acids Chemical class 0.000 description 2
- ZXEKIIBDNHEJCQ-UHFFFAOYSA-N isobutanol Chemical compound CC(C)CO ZXEKIIBDNHEJCQ-UHFFFAOYSA-N 0.000 description 2
- 239000003960 organic solvent Substances 0.000 description 2
- XNGIFLGASWRNHJ-UHFFFAOYSA-N phthalic acid Chemical compound OC(=O)C1=CC=CC=C1C(O)=O XNGIFLGASWRNHJ-UHFFFAOYSA-N 0.000 description 2
- 239000004304 potassium nitrite Substances 0.000 description 2
- 235000010289 potassium nitrite Nutrition 0.000 description 2
- 229940037312 stearamide Drugs 0.000 description 2
- KDYFGRWQOYBRFD-UHFFFAOYSA-N succinic acid Chemical compound OC(=O)CCC(O)=O KDYFGRWQOYBRFD-UHFFFAOYSA-N 0.000 description 2
- 150000003672 ureas Chemical class 0.000 description 2
- PCKKNFLLFBDNPA-UHFFFAOYSA-N 1,1-dibutylurea Chemical compound CCCCN(C(N)=O)CCCC PCKKNFLLFBDNPA-UHFFFAOYSA-N 0.000 description 1
- GXZCXQRUZIXVNQ-UHFFFAOYSA-N 1-butyl-1-ethylurea Chemical group CCCCN(CC)C(N)=O GXZCXQRUZIXVNQ-UHFFFAOYSA-N 0.000 description 1
- HZAXFHJVJLSVMW-UHFFFAOYSA-N 2-Aminoethan-1-ol Chemical class NCCO HZAXFHJVJLSVMW-UHFFFAOYSA-N 0.000 description 1
- LBLYYCQCTBFVLH-UHFFFAOYSA-N 2-Methylbenzenesulfonic acid Chemical compound CC1=CC=CC=C1S(O)(=O)=O LBLYYCQCTBFVLH-UHFFFAOYSA-N 0.000 description 1
- KWIPUXXIFQQMKN-UHFFFAOYSA-N 2-azaniumyl-3-(4-cyanophenyl)propanoate Chemical compound OC(=O)C(N)CC1=CC=C(C#N)C=C1 KWIPUXXIFQQMKN-UHFFFAOYSA-N 0.000 description 1
- 241000331231 Amorphocerini gen. n. 1 DAD-2008 Species 0.000 description 1
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 1
- DSLZVSRJTYRBFB-UHFFFAOYSA-N Galactaric acid Natural products OC(=O)C(O)C(O)C(O)C(O)C(O)=O DSLZVSRJTYRBFB-UHFFFAOYSA-N 0.000 description 1
- MGJKQDOBUOMPEZ-UHFFFAOYSA-N N,N'-dimethylurea Chemical compound CNC(=O)NC MGJKQDOBUOMPEZ-UHFFFAOYSA-N 0.000 description 1
- 239000004952 Polyamide Substances 0.000 description 1
- 239000002250 absorbent Substances 0.000 description 1
- 230000002745 absorbent Effects 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 125000002723 alicyclic group Chemical group 0.000 description 1
- 125000003342 alkenyl group Chemical group 0.000 description 1
- 125000000217 alkyl group Chemical group 0.000 description 1
- 229940090948 ammonium benzoate Drugs 0.000 description 1
- OHJMTUPIZMNBFR-UHFFFAOYSA-N biuret Chemical compound NC(=O)NC(N)=O OHJMTUPIZMNBFR-UHFFFAOYSA-N 0.000 description 1
- 229940074995 bromine Drugs 0.000 description 1
- 229910052794 bromium Inorganic materials 0.000 description 1
- 230000001680 brushing effect Effects 0.000 description 1
- DNSISZSEWVHGLH-UHFFFAOYSA-N butanamide Chemical compound CCCC(N)=O DNSISZSEWVHGLH-UHFFFAOYSA-N 0.000 description 1
- 229910052801 chlorine Inorganic materials 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 150000001991 dicarboxylic acids Chemical class 0.000 description 1
- 229950001902 dimevamide Drugs 0.000 description 1
- 238000007598 dipping method Methods 0.000 description 1
- 239000000839 emulsion Substances 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- DSLZVSRJTYRBFB-DUHBMQHGSA-N galactaric acid Chemical compound OC(=O)[C@H](O)[C@@H](O)[C@@H](O)[C@H](O)C(O)=O DSLZVSRJTYRBFB-DUHBMQHGSA-N 0.000 description 1
- HSEMFIZWXHQJAE-UHFFFAOYSA-N hexadecanamide Chemical compound CCCCCCCCCCCCCCCC(N)=O HSEMFIZWXHQJAE-UHFFFAOYSA-N 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 125000004435 hydrogen atom Chemical group [H]* 0.000 description 1
- 238000010348 incorporation Methods 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 229940035429 isobutyl alcohol Drugs 0.000 description 1
- IDNHOWMYUQKKTI-UHFFFAOYSA-M lithium nitrite Chemical compound [Li+].[O-]N=O IDNHOWMYUQKKTI-UHFFFAOYSA-M 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000004200 microcrystalline wax Substances 0.000 description 1
- 235000019808 microcrystalline wax Nutrition 0.000 description 1
- 150000002763 monocarboxylic acids Chemical class 0.000 description 1
- ZFIFHAKCBWOSRN-UHFFFAOYSA-N naphthalene-1-sulfonamide Chemical compound C1=CC=C2C(S(=O)(=O)N)=CC=CC2=C1 ZFIFHAKCBWOSRN-UHFFFAOYSA-N 0.000 description 1
- 125000000449 nitro group Chemical group [O-][N+](*)=O 0.000 description 1
- 150000002894 organic compounds Chemical class 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- MONRWRVYLOHUFA-UHFFFAOYSA-N pentylurea Chemical group CCCCCNC(N)=O MONRWRVYLOHUFA-UHFFFAOYSA-N 0.000 description 1
- 229960003424 phenylacetic acid Drugs 0.000 description 1
- 239000003279 phenylacetic acid Substances 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- QLNJFJADRCOGBJ-UHFFFAOYSA-N propionamide Chemical compound CCC(N)=O QLNJFJADRCOGBJ-UHFFFAOYSA-N 0.000 description 1
- 229940080818 propionamide Drugs 0.000 description 1
- ZQZJKHIIQFPZCS-UHFFFAOYSA-N propylurea Chemical compound CCCNC(N)=O ZQZJKHIIQFPZCS-UHFFFAOYSA-N 0.000 description 1
- 239000000344 soap Substances 0.000 description 1
- RYYKJJJTJZKILX-UHFFFAOYSA-M sodium octadecanoate Chemical compound [Na+].CCCCCCCCCCCCCCCCCC([O-])=O RYYKJJJTJZKILX-UHFFFAOYSA-M 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000001384 succinic acid Substances 0.000 description 1
- 230000002195 synergetic effect Effects 0.000 description 1
- 239000001993 wax Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
- C23F11/00—Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent
- C23F11/02—Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent in air or gases by adding vapour phase inhibitors
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S428/00—Stock material or miscellaneous articles
- Y10S428/922—Static electricity metal bleed-off metallic stock
- Y10S428/923—Physical dimension
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/31504—Composite [nonstructural laminate]
- Y10T428/31801—Of wax or waxy material
- Y10T428/31804—Next to cellulosic
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/31504—Composite [nonstructural laminate]
- Y10T428/31815—Of bituminous or tarry residue
- Y10T428/31819—Next to cellulosic
- Y10T428/31823—Paper
Definitions
- My invention relates to improvements in corrosion inhibitors and more particularly to corrosion inhibitors for use in conjunction with ferrous metal surfaces which are subject to attack by the elements normally existing in the atmosphere.
- the alkali metal nitrites including ammonium nitrite, sodium nitrite, potassium nitrite and lithium nitrite.
- the water-soluble nitrites Of particular utility are the water-soluble nitrites.
- Other nitrites can be utilized including those which are soluble.
- amides which can be used in combination with the nitrites are the mono-amides, diamides, and polyamides.
- the term mono-amide is meant to include organic compounds having the general formula RCONHz, where R is an aliphatic group having from 1-25 or more carbon atoms. These include such amides as acetamide, propionamide, N-butyramide, N-valeramide, stearamide, palmitylamide, fatty acid amides and the like. Although less activity results when R is alicyclic, aromatic or mixed aliphatic aromatic, amides of this type can be used. For example,
- the amide can be benzamide or aromatic acid amides of the type of benzensulfonic acid amide, toluenesulfonic acid amide, naphthalenesulfonic acid amide and the like.
- the most suitable amides are the diarnides, which can be represented by the general formula RzNCONRz, where R can be hydrogen or an organic radical of the type previously described for the monoamide formula.
- urea guanidine, biuret, and the like
- N-substituted ureas and unsymmetrical ureas such as N,N-dibutyl urea, N-butyl urea, N-propyl urea, dimethyl urea, tertiary butyl urea, tertiary amyl urea, ethyl butyl urea and the like.
- urea Of particular utility is urea.
- My invention is based upon the discovery that the functioning of the aforesaid compositions, in relation to the inhibition of corrosion of ferrous objects, is substantially improved by the incorporation therein or conjoint use therewith of amine and ammonium salts of car'- States atent Water boxylic acids containing from. 6 to 18 carbon atoms.
- the action of the said salts appears to synergize the activity of the organic amide-inorganic nitrite compositions so as to bring about a marked enhancement of the corrosion inhibiting properties of the latter compositions.
- the carboxylic acids whose ammonium and amine salts are utilized in accordance with the present invention include aliphatic, araliphatic and aromatic straight chain and branched chain monocarboxylic and dicarboxylic acids.
- the aromatic acids may, for example, be represented by the formula (R)vAI'-(COOH)n, where R is halogen (particularly chlorine or bro-mine), nitro, hydroxy, and alkyl and alkenyl containing from 1 to 5 carbon atoms, Ar is an aromatic hydrocarbon radical, v is zero to 2, and n is 1 to 2.
- Typical illustrative examples of such acids are caproic, caprylic, 2-ethyl hexoic, benzoic, naphthoic, anthraquinoic, phenyl acetic, phydroxy phenyl acetic, o-hydroxy phenyl acetic, lauric, palmitic, stearic, succinic, itaconic, aconitic, phthalic, adipic, salicyclic, hydroxy benzoic, pimelic, sebacic, hexahydrobenzoic acid, mucic acid, and azelaic acid.
- the carboxylic acids are utilized in the form of their ammonium or amine salts.
- the amines can be selected from a large group and comprise aliphatic, araliphatic and aromatic straight chain and ylamine; a-methyl-fl-hydroxyisopropylamine; and the like.
- carboxylic acids can be utilized in the form of their ammonium salts or in the form of salts of any of the aforementioned -illustrated amines.
- carboxylic acids can be utilized in the form of their ammonium salts or in the form of salts of any of the aforementioned -illustrated amines.
- amines Of especial utility is the -di-isopropylamine salt of 2-.ethylhexoic acid.
- Example 2 r Sodium nitriteuu; Q it 6 Acetamide 12 Di-isopropyl amine .salt of benzoic acid 12 3
- Example 3 Potassium nitrite 12 Stearamide 18 Triethylamine salt of 2-ethyl hexoic acid 20 Water 45 Isobutyl alcohol 45
- Example 4 Sodium nitrite 4 Guanidine 18 Ammonium salt of 2-ethyl hexoic acid 15 Water 85
- Example 5 Ammonium nitrite 8 Benzene sulfonic acid amide 8 Di-isopropyl amine salt of naththoic acid Water 95
- Example 6 Ammonium nitrite 20 Urea 2O Triethylamine salt of phthalic acid 10 Water 80
- Example 7 Ammonium nitrite N-butyl ur 8 Di-isopropyl amine salt of succinic acid 18 Water 100
- Example 8 Sodium nitrite..- Urea 20 Di-iso
- the corrosion inhibiting composition may be utilized in the form of a dispersion or emulsion and deposited into or upon a carrier by dipping, brushing, spraying and other ways known in the art. While, in commercial practice, it is desirable that all of the ingredients comprising the corrosion inhibiting compositions of the present invention be deposited on or into the carrier from a single solution or dispersion or the like, it will be appreciated that such procedure need not be followed.
- the inorganic nitrite may initially be deposited in or upon the carrier after which the organic amide may be deposited followed by the deposition of the amine or ammonium salt of the carboxylic acid, or the order of the deposition ofthe aforesaid ingredients may be altered in any way desired. The important thing is that all three of said ingredients be present so that they can exert their conjoint effects.
- a vapor phase inhibiting composition for inhibiting corrosive attack on metal by elements normally existing in the atmosphere comprising, as essential ingredients, an
- organic amide an inorganic metal nitrite, and at least one member selected from the group consisting of amine and ammonium salts of carboxylic acids selected from amounting to substantially equal parts of inorganic nitrite and organic amide with a slightly greater propor tion of the amine or ammonium salt.
- the corrosion inhibiting composition When the corrosion inhibiting composition is embodied or incorporated into a solid carrier or support member as, for example, a sheet of paper, a corrugated or other carton, a separator, or a wrapper or the like, good results are obtained where the corrosion inhibiting composition is present in a concentration of from about 0.1 to 5 or 10 grams per square foot of surface of the carrier sheet or the like. In the usual case, the corrosion inhibiting composition is very effective when it is present in or on the carrier or support member in the total amount of the order of about 2 to 4 grams per square foot. of sheet surface-area-to which the ferrous article to be protected is exposed.
- the corrosion inhibiting composition may be incorporated into or upon a suitable carrier,'which may be sheet the group consisting of caproic, caprylic, 2-ethyl hexoic, phenyl acetic, p-hydroxy phenyl acetic, o-hy-droxy phenyl acetic, lauric, palmitic, stearic, succinic, itaconic, aconitic, phthalic, adipic, salicylic, hydroxy benzoic, pimelic, hexahydrobenzoic, mucic, azelaic; and aromatic acids represented by the formula (R)v-AI(COOH)n where R is selected from the group consisting of halogen, nitro, hy-
- droxy and aliphatic hydrocarbon radicals containing from 1 to 5 carbon atoms Ar is an aromatic hydrocarbon radical, v is zero to 2, and n is 1 to 2, said ingredients being present in the ratio of about 1 part by weight of said nitrite to 0.05-20 parts by weight each of said amide.
- a vapor phase inhibiting composition for inhibiting corrosive attack on metal byelements normally existing in the atmosphere comprising, as essential ingredients, urea, a water-soluble inorganic nitrite, and at least, one
- a vapor phase inhibiting composition of matter for inhibiting corrosive attack on metal by elements normally existing in the atmopshere comprising, as essential ingredients, 1 part alkali metal nitrite and 0.0520 parts each of urea and at least one member selected from the group consisting of amine and ammonium salts of caproic acid.
- a vapor phase inhibiting composition for use in the inhibition of corrosive attack on metal by elements normally existing in the atmosphere comprising, as essential ingredients, urea, sodium nitrite, and at least one member selected from the group consisting of amine and ammonium salts of carboxylic acids selected from the group consisting of eaproic, caprylic, Z-ethyl hexoic, phenyl acetic, p-hydroxy phenyl acetic, o-hydroxy phenyl acetic, lauric, palmitic, stearic, succinic, itaconic, aconitic, phthalic, adipic, salicylic, hydroxy benzoic, pimelic, hexahydrobenzoic, mucic, azelaic; and aromatic acids represented by the formula (R)pAI-(COOH)n where R is selected from the group consisting of halogen, nitro, hydroxy and aliphatic hydrocarbon radicals containing from 1 to 5 carbon
- An article of manufacture for inhibiting the corrosion of metal by means of vapor phase inhibition comprising a solid carrier embodying therein an organic amide, an inorganic nitrite, and at least one member selected from the group consisting of amine and ammonium salts of carboxylic acids selected from the group consisting of eaproic, caprylic, 2-ethy1 hexoic, phenyl acetic, p-hydroxy phenyl acetic, o-hydroxy phenyl acetic, lauric, palmitic,
- R is selected from the group consisting of halogen, nitro, hydroxy and aliphatic hydrocarbon radicals containing from 1 to 5 carbon atoms
- Ar is an aromatic hydrocarbon radical
- v is zero to 2
- n is 1 to 2
- said ingredients being present in the ratio of 1 part of said nitrite to 0.05-20 parts each of said amide and said carboxylic acid salt.
- An article of manufacture for inhibiting the corrosion of metal by means of vapor phase inhibition comprising paper sheet stock impregnated with urea, an alkali metal nitrite, and at least one member selected from the group consisting of amine and ammonium salts of carboxylic acids selected from the group consisting of eaproic, caprylic, 2-ethyl hexoic, phenyl acetic, p-hydroxy phenyl acetic, o-hydroxy phenyl acetic, lauric, palmitic, stearic, succinic, itaconic, aconitic, phthalic, adipic, salicylic, hydroxy benzoic, pimelic, hexahydrobenzoic, mucic,
- aromatic acids represented by the formula (R)vAI-(COOH)n where R is selected from the group consisting of halogen, nitro, hydroxy and aliphatic hydrocarbon radicals containing from 1 to 5 carbon atoms, Ar is an aromatic hydrocarbon radical, v is zero to 2, and n is 1 to 2, the urea, the alkali metal nitrite and the carboxylic acid salt each being present in an amount equal to at least 0.5 gram and the total of said ingredients being present in an amount of about 2 to about 4 grams per square foot of paper sheet surface area.
- An article of manufacture for inhibiting the corrosion of metal by means of vapor phase inhibition comprising paper impregnated With urea, sodium nitrite, and di-isopropyl amine salt of caproic acid, the aforesaid ingredients being present in the ratio of 1 part of said nitrite to 0.05-20 parts each of the urea and the di-isopropyl amine salt of caproic acid.
- An article of manufacture for inhibiting the corrosion of metal by means of vapor phase inhibition comprising paper sheet stock impregnated with urea, sodium nitrite, and di-isopropyl amine salt of 2-ethyl hexoic acid, the aforesaid ingredients being present in the ratio of 1 part of said nitrite to 0.0520 parts each of the urea and the di-isopropyl amine salt of 2-ethyl hexoic acid, one surface of said paper sheet stock carrying a backing comprising a layer of moisture-repellent material.
- a vapor phase inhibiting composition for use in the inhibition of corrosive attack on metal by elements normally existing in the atmosphere comprising, as essential ingredients, urea, sodium nitrite, and 2-hydroxyethylammonium benzoate, said ingredients being present in the ratio of about 1 part by Weight of said nitrite to 0.05-20 parts by weight each of said amide and said salt of benzoic acid.
- An article of manufacture for inhibiting the corrosion of metal by means of vapor phase inhibition comprising paper sheet stock impregnated with urea, an alkali metal nitrite, and the 2-hydroxyethylammonium salt of benzoic acid, the urea, the alkali metal nitrite and the benzoic salt each being present in an amount equal to at least 0.5 grams and the total of said ingredients being present in an amount of about 2 to about 4 grams per square foot of paper sheet surface area.
- An article of manufacture for inhibiting the corrosion of metal by means of vapor phase .inhibition comprising paper impregnated with urea, sodium nitrite and Z-hydroxyethylammonium benzoate, the aforesaid ingredients being present in the ratio of 1 part of said nitrite to 0.05-20 parts each of the urea and the 2-hydroxyethylammonium benzoate.
Description
COMEOSITION AND SHEET MATERIAL FOR INHIBITION OF CORROSION F METALS Murray Senlrus, Western Springs, 111., assignor to panbert Chemical Company, a corporation of Illinois No Drawing. Application September 15, 1956, Serial No. 185,142
14 Claims. (Cl. 21-2.5)
My invention relates to improvements in corrosion inhibitors and more particularly to corrosion inhibitors for use in conjunction with ferrous metal surfaces which are subject to attack by the elements normally existing in the atmosphere.
In the U. S. patent of Edward A. Schwoegler and Clemens A. Hutter, No. 2,521,311, dated September 5, 1950, efiective metal corrosion inhibiting compositions are disclosed containing organic amides and inorganic metal nitrites. As is disclosed in said patent, a synergistic effect is secured by virtue of the conjoint use of the aforesaid two types of materials.
Among the inorganic nitrites which can be utilized pursuant to the teachings of the aforesaid patent are the alkali metal nitrites, including ammonium nitrite, sodium nitrite, potassium nitrite and lithium nitrite. Of particular utility are the water-soluble nitrites. Other nitrites can be utilized including those which are soluble.
in organic solvents and those which are mutually soluble with the organic amides in organic or other solvent media. i
As described in the aforementioned patent, among the amides which can be used in combination with the nitrites are the mono-amides, diamides, and polyamides. The term mono-amide is meant to include organic compounds having the general formula RCONHz, where R is an aliphatic group having from 1-25 or more carbon atoms. These include such amides as acetamide, propionamide, N-butyramide, N-valeramide, stearamide, palmitylamide, fatty acid amides and the like. Although less activity results when R is alicyclic, aromatic or mixed aliphatic aromatic, amides of this type can be used. For example,
the amide can be benzamide or aromatic acid amides of the type of benzensulfonic acid amide, toluenesulfonic acid amide, naphthalenesulfonic acid amide and the like. The most suitable amides are the diarnides, which can be represented by the general formula RzNCONRz, where R can be hydrogen or an organic radical of the type previously described for the monoamide formula. Illustrative of suitable diamides are urea, guanidine, biuret, and the like, or N-substituted ureas and unsymmetrical ureas such as N,N-dibutyl urea, N-butyl urea, N-propyl urea, dimethyl urea, tertiary butyl urea, tertiary amyl urea, ethyl butyl urea and the like. Of particular utility is urea.
As is further described in the foregoing patent, good results are obtained when the aforesaid compounds are utilized in the ratio of one part of the inorganic nitrite to from about 0.05-20 parts of the amides, said parts being by weight, and particularly advantageous results are obtained by the employment of substantially equal parts by weight of the inorganic nitrite and the organic amide.
My invention is based upon the discovery that the functioning of the aforesaid compositions, in relation to the inhibition of corrosion of ferrous objects, is substantially improved by the incorporation therein or conjoint use therewith of amine and ammonium salts of car'- States atent Water boxylic acids containing from. 6 to 18 carbon atoms. The action of the said salts appears to synergize the activity of the organic amide-inorganic nitrite compositions so as to bring about a marked enhancement of the corrosion inhibiting properties of the latter compositions.
The carboxylic acids whose ammonium and amine salts are utilized in accordance with the present invention include aliphatic, araliphatic and aromatic straight chain and branched chain monocarboxylic and dicarboxylic acids. The aromatic acids may, for example, be represented by the formula (R)vAI'-(COOH)n, where R is halogen (particularly chlorine or bro-mine), nitro, hydroxy, and alkyl and alkenyl containing from 1 to 5 carbon atoms, Ar is an aromatic hydrocarbon radical, v is zero to 2, and n is 1 to 2. Typical illustrative examples of such acids are caproic, caprylic, 2-ethyl hexoic, benzoic, naphthoic, anthraquinoic, phenyl acetic, phydroxy phenyl acetic, o-hydroxy phenyl acetic, lauric, palmitic, stearic, succinic, itaconic, aconitic, phthalic, adipic, salicyclic, hydroxy benzoic, pimelic, sebacic, hexahydrobenzoic acid, mucic acid, and azelaic acid.
As I have stated above, the carboxylic acids are utilized in the form of their ammonium or amine salts. The amines can be selected from a large group and comprise aliphatic, araliphatic and aromatic straight chain and ylamine; a-methyl-fl-hydroxyisopropylamine; and the like.
Any of the aforementioned carboxylic acids can be utilized in the form of their ammonium salts or in the form of salts of any of the aforementioned -illustrated amines. Of especial utility is the -di-isopropylamine salt of 2-.ethylhexoic acid.
The following examples are illustrative of corrosion .inhibiting compositions made in accordance with my invention. It will be understood that various changes may be made therein in relation to proportions of the ingredients and numerous other compositions can readily be evolved in the light of the teachings disclosed herein. Said compositions may be utilized, among other ways, to impregnate carriers or solid bodies of various types to deposit therein the solids comprising the corrosion inhibiting compositions. All parts given are by weight. Example 1 Sodium nitrite 30 Urea 30 Ammonium benzoate 30 Water -Q. 60
Example 2 r Sodium nitriteuu; Q it 6 Acetamide 12 Di-isopropyl amine .salt of benzoic acid 12 3 Example 3 Potassium nitrite 12 Stearamide 18 Triethylamine salt of 2-ethyl hexoic acid 20 Water 45 Isobutyl alcohol 45 Example 4 Sodium nitrite 4 Guanidine 18 Ammonium salt of 2-ethyl hexoic acid 15 Water 85 Example 5 Ammonium nitrite 8 Benzene sulfonic acid amide 8 Di-isopropyl amine salt of naththoic acid Water 95 Example 6 Ammonium nitrite 20 Urea 2O Triethylamine salt of phthalic acid 10 Water 80 Example 7 Ammonium nitrite N-butyl ur 8 Di-isopropyl amine salt of succinic acid 18 Water 100 Example 8 Sodium nitrite..- Urea 20 Di-isopropyl amine salt of 2-ethyl hexoic acid 30 Water 70 Example 9 Sodium nitri 30 Urea 30 Di-isopropyl amine salt of benzoic acid 30 Water 60 Example 10 Sodium nitri 30 Urea 3O Ammonium salt of phenyl acetic acid 30 Water 70 The three components comprising the corrosion inhibiting compositions which are utilized in accordance with my invention can be employed in varying proportions. Good results are obtained, for example, where, for each part of inorganic nitrite, from 0.05 to 20 parts each of the organic amide and the amine or ammonium salt of the carboxylic acid are employed, said parts being by weight. Especially advantageous results are obtained where the ingredients are employed in proportions stock, finely divided particles of relatively inert material, and the like, in any one of several Ways disclosed, for example, in the aforementioned patent. Thus, all of the ingredients may be dissolved in a suitable solvent, for instance, water, or an organic solvent or a mixture of solvents, and the carrier impregnated with the solution after which the solvent material may be evaporated. Alternatively, the corrosion inhibiting composition may be utilized in the form of a dispersion or emulsion and deposited into or upon a carrier by dipping, brushing, spraying and other ways known in the art. While, in commercial practice, it is desirable that all of the ingredients comprising the corrosion inhibiting compositions of the present invention be deposited on or into the carrier from a single solution or dispersion or the like, it will be appreciated that such procedure need not be followed. Thus, for example, the inorganic nitrite may initially be deposited in or upon the carrier after which the organic amide may be deposited followed by the deposition of the amine or ammonium salt of the carboxylic acid, or the order of the deposition ofthe aforesaid ingredients may be altered in any way desired. The important thing is that all three of said ingredients be present so that they can exert their conjoint effects.
As described in the aforesaid patent, it is frequently desirable to coat one side of a sheet of paper or other absorbent cellulosic or fabric material or the like, which has been impregnated with a corrosion inhibiting composition, with a water-repellent or moistureproof material for the purposes of preventing too rapid dissipation of the corrosion inhibiting composition and to insure against undue moisture absorption by said carriers where one or more of the ingredients of the corrosion inhibiting composition utilized is of a hygroscopic character. A number of water-repellent materials is readily available for use in this connection as, for example, waxes, such as microcrystalline waxes, asphaltums, soaps of normally solid fatty acids such as sodium stearate, and various other materials of this type. For a more detailed description thereof, and for a detailed description of various carriers and manners of utilizing in practical commercial ways corrosion inhibiting compositions of the type here involved, reference may be had to the aforementioned patcut and application as Well as to the application of Clemens A. Hutter, Serial No. 124,852, filed November 1, 1949, now Patent No. 2,534,201, dated December 12, 1950. The teachings and practices disclosed in said patent and applications can be and advantageously are utilized in the practice of my present invention.
What I claim as new and desire to protect by Letters Patent of the United States is: v
l. A vapor phase inhibiting composition for inhibiting corrosive attack on metal by elements normally existing in the atmosphere comprising, as essential ingredients, an
organic amide, an inorganic metal nitrite, and at least one member selected from the group consisting of amine and ammonium salts of carboxylic acids selected from amounting to substantially equal parts of inorganic nitrite and organic amide with a slightly greater propor tion of the amine or ammonium salt.
When the corrosion inhibiting composition is embodied or incorporated into a solid carrier or support member as, for example, a sheet of paper, a corrugated or other carton, a separator, or a wrapper or the like, good results are obtained where the corrosion inhibiting composition is present in a concentration of from about 0.1 to 5 or 10 grams per square foot of surface of the carrier sheet or the like. In the usual case, the corrosion inhibiting composition is very effective when it is present in or on the carrier or support member in the total amount of the order of about 2 to 4 grams per square foot. of sheet surface-area-to which the ferrous article to be protected is exposed.
The corrosion inhibiting composition may be incorporated into or upon a suitable carrier,'which may be sheet the group consisting of caproic, caprylic, 2-ethyl hexoic, phenyl acetic, p-hydroxy phenyl acetic, o-hy-droxy phenyl acetic, lauric, palmitic, stearic, succinic, itaconic, aconitic, phthalic, adipic, salicylic, hydroxy benzoic, pimelic, hexahydrobenzoic, mucic, azelaic; and aromatic acids represented by the formula (R)v-AI(COOH)n where R is selected from the group consisting of halogen, nitro, hy-
droxy and aliphatic hydrocarbon radicals containing from 1 to 5 carbon atoms, Ar is an aromatic hydrocarbon radical, v is zero to 2, and n is 1 to 2, said ingredients being present in the ratio of about 1 part by weight of said nitrite to 0.05-20 parts by weight each of said amide. and
said salt.
2. A vapor phase inhibiting composition for inhibiting corrosive attack on metal byelements normally existing in the atmosphere comprising, as essential ingredients, urea, a water-soluble inorganic nitrite, and at least, one
member selected from the group consisting of amine and ammonium salts of carboxylic acids selected from the group consisting of eaproic, caprylic, 2-ethyl hexoic, phenyl acetic, p-hydroxy phenyl acetic, o-hydroxy phenyl acetic, lauric, palmitic, stearic, succinic, itaconic, aconitic, phthalic, adipic, salicylic, hydroxy benzoic, pimelic, hexahydrobenzoic, mucic, azelaic; and aromatic acids represented by the formula (R)vAl(COOII)n where R is selected from the group consisting of halogen, nitro, hydroxy and aliphatic hydrocarbon radicals containing from 1 to 5 carbon atoms, Ar is an aromatic hydrocarbon radical, v is zero to 2, and n is 1 to 2, said ingredients being present in the. ratio of 1 part of said nitrite to 0.05-20 parts each of the urea and said carboxylic acid salt.
3. A vapor phase inhibiting composition of matter for inhibiting corrosive attack on metal by elements normally existing in the atmopshere comprising, as essential ingredients, 1 part alkali metal nitrite and 0.0520 parts each of urea and at least one member selected from the group consisting of amine and ammonium salts of caproic acid.
4. A vapor phase inhibiting composition for use in the inhibition of corrosive attack on metal by elements normally existing in the atmosphere comprising, as essential ingredients, urea, sodium nitrite, and at least one member selected from the group consisting of amine and ammonium salts of carboxylic acids selected from the group consisting of eaproic, caprylic, Z-ethyl hexoic, phenyl acetic, p-hydroxy phenyl acetic, o-hydroxy phenyl acetic, lauric, palmitic, stearic, succinic, itaconic, aconitic, phthalic, adipic, salicylic, hydroxy benzoic, pimelic, hexahydrobenzoic, mucic, azelaic; and aromatic acids represented by the formula (R)pAI-(COOH)n where R is selected from the group consisting of halogen, nitro, hydroxy and aliphatic hydrocarbon radicals containing from 1 to 5 carbon atoms, Ar is an aromatic hydrocarbon radical, v is zero to 2, and n .is 1 to 2, said ingredients being present in the ratio of 1 part of said nitrite to 0.05-20 parts each of the urea and said carboxylic acid salt.
5. A vapor phase inhibiting composition in accordance with claim 4, in which the carboxylic acid is 2-ethyl hexoic acid.
6. A vapor phase inhibiting composition in accordance with claim 4, in which the carboxylic acid is benzoic acid.
7. An article of manufacture for inhibiting the corrosion of metal by means of vapor phase inhibition comprising a solid carrier embodying therein an organic amide, an inorganic nitrite, and at least one member selected from the group consisting of amine and ammonium salts of carboxylic acids selected from the group consisting of eaproic, caprylic, 2-ethy1 hexoic, phenyl acetic, p-hydroxy phenyl acetic, o-hydroxy phenyl acetic, lauric, palmitic,
stearic, succinic, itaconic, aconitic, phthalic, adipic, salicylic, hydroxy benzoic, pimelic, hexahydrobenzoic, mucic, azelaic; and aromatic acids represented by the formula (R) v-AI(COOH)11. where R is selected from the group consisting of halogen, nitro, hydroxy and aliphatic hydrocarbon radicals containing from 1 to 5 carbon atoms, Ar is an aromatic hydrocarbon radical, v is zero to 2, and n is 1 to 2, said ingredients being present in the ratio of 1 part of said nitrite to 0.05-20 parts each of said amide and said carboxylic acid salt.
8. An article of manufacture for inhibiting the corrosion of metal by means of vapor phase inhibition comprising paper sheet stock impregnated with urea, an alkali metal nitrite, and at least one member selected from the group consisting of amine and ammonium salts of carboxylic acids selected from the group consisting of eaproic, caprylic, 2-ethyl hexoic, phenyl acetic, p-hydroxy phenyl acetic, o-hydroxy phenyl acetic, lauric, palmitic, stearic, succinic, itaconic, aconitic, phthalic, adipic, salicylic, hydroxy benzoic, pimelic, hexahydrobenzoic, mucic,
azelaic; and aromatic acids represented by the formula (R)vAI-(COOH)n where R is selected from the group consisting of halogen, nitro, hydroxy and aliphatic hydrocarbon radicals containing from 1 to 5 carbon atoms, Ar is an aromatic hydrocarbon radical, v is zero to 2, and n is 1 to 2, the urea, the alkali metal nitrite and the carboxylic acid salt each being present in an amount equal to at least 0.5 gram and the total of said ingredients being present in an amount of about 2 to about 4 grams per square foot of paper sheet surface area.
9. An article of manufacture for inhibiting the corrosion of metal by means of vapor phase inhibition comprising paper impregnated With urea, sodium nitrite, and di-isopropyl amine salt of caproic acid, the aforesaid ingredients being present in the ratio of 1 part of said nitrite to 0.05-20 parts each of the urea and the di-isopropyl amine salt of caproic acid.
10. An article of manufacture for inhibiting the corrosion of metal by means of vapor phase inhibition comprising paper sheet stock impregnated with urea, sodium nitrite, and di-isopropyl amine salt of 2-ethyl hexoic acid, the aforesaid ingredients being present in the ratio of 1 part of said nitrite to 0.0520 parts each of the urea and the di-isopropyl amine salt of 2-ethyl hexoic acid, one surface of said paper sheet stock carrying a backing comprising a layer of moisture-repellent material.
11. An article of manufacture in accordance with claim 9, in which the urea, sodium nitrite and di-isoppropyl amine salt of caproic acid are each present in amounts of at least 0.5 gram and the total of said ingredients is present in an amount of about 2 to about 4 grams per square foot of the paper sheet surface area.
12. A vapor phase inhibiting composition for use in the inhibition of corrosive attack on metal by elements normally existing in the atmosphere comprising, as essential ingredients, urea, sodium nitrite, and 2-hydroxyethylammonium benzoate, said ingredients being present in the ratio of about 1 part by Weight of said nitrite to 0.05-20 parts by weight each of said amide and said salt of benzoic acid.
13. An article of manufacture for inhibiting the corrosion of metal by means of vapor phase inhibition comprising paper sheet stock impregnated with urea, an alkali metal nitrite, and the 2-hydroxyethylammonium salt of benzoic acid, the urea, the alkali metal nitrite and the benzoic salt each being present in an amount equal to at least 0.5 grams and the total of said ingredients being present in an amount of about 2 to about 4 grams per square foot of paper sheet surface area.
14. An article of manufacture for inhibiting the corrosion of metal by means of vapor phase .inhibition comprising paper impregnated with urea, sodium nitrite and Z-hydroxyethylammonium benzoate, the aforesaid ingredients being present in the ratio of 1 part of said nitrite to 0.05-20 parts each of the urea and the 2-hydroxyethylammonium benzoate.
References Cited in the file of this patent UNITED STATES PATENTS 2,330,524 Shields Sept. 28, 1943 2,421,311 Schwoegler et a1. Sept. 5, 1950 2,629,649 Wachter Feb. 24, 1953 FOREIGN PATENTS 596,160 Great Britain Dec. 30, 1947 600,328 Great Britain Apr. 6, 1948 OTHER REFERENCES Baker et al.: Polar Type Rust Inhibitors, Industrial and Engineering Chemistry, vol. 40, December 1948, pp. 2338 to 2347.
Claims (1)
1. VAPOR PHASE INHIBITING COMPOSITION FOR INHIBITING CORROSIVE ATTACK ON METAL BY ELEMENTS NORMALLY EXISTING IN THE ATMOSPHERE COMPRISING, AS ESSENTIAL INGREIENTS, AN ORGANIC AMIDE, AN INORGANIC METAL NITRITE, AND AT LEAST ONE MEMBER SELECTED FROM THE GROUP CONSISTING OF AMINE AND AMMONIUM SALTS OF CARBOXYLIC ACIDS SELECTED FROM THE GROUP CONSISTING OF CAPROIC, CAPRYLIC, 2-ETHYL HEXOIC, PHENYL ACETIC, P-HYDROXY PHENYL ACETIC, O-HYDROXY PHENYL ACETIC, LAURIC, PALMITIC, STEARIC, ITACONIC, ACONITIC, PHTHALIC, ADIPIC, SALICYLIC, HYDROXY BENZOIC, PIMELIC, HEXAHYDROBENZOIC, MUCIC, AZELAIC; AND AROMATIC ACIDS REPRESENTED BY THE FORMULA (R)V-AR-(COOH)N WHERE R IS SELECTED FROM THE GROUP CONSISTING OF HALOGEN, NITRO, HYDROXY AND ALIPHATIC HYDROCARBON RADICALS CONTAINING FROM 1 TO 5 CARBON ATOMS, AR IS AN AROMATIC HYDROCARBON RADICAL, V IS ZERO TO 2. AND N IS 1 TO 2, SAID INGREDIENTS BEING PRESENT IN THE RATIO OF ABOUT 1 PART BY WEIGHT OF SAID NITRITE TO 0.05-20 PARTS BY WEIGHT EACH OF SAID AMIDE AND SAID SALT.
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US2878191A (en) * | 1956-10-22 | 1959-03-17 | Dow Chemical Co | Non-corrodent aqueous media |
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US3257162A (en) * | 1961-12-12 | 1966-06-21 | Omega Chemicals Corp | Inhibition of volatilization of aqueous organic mixtures |
US3382031A (en) * | 1961-12-12 | 1968-05-07 | Omega Chemicals Corp | Inhibition of volatilization of volatile organic compounds |
US3420789A (en) * | 1962-03-26 | 1969-01-07 | Coates Brothers & Co | Polyamide resins having solubility and resistance to gelling in alcohol solutions |
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US4478604A (en) * | 1982-04-01 | 1984-10-23 | Phillips Petroleum Company | Gasoline compositions containing branched chain amines or derivatives thereof |
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US4894169A (en) * | 1988-04-04 | 1990-01-16 | Merck & Co., Inc. | Method of inhibiting iron salt deposition in aqueous systems using urea salts |
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US5030385A (en) * | 1988-03-25 | 1991-07-09 | E. I. Du Pont De Nemours And Company | Process of inhibiting corrosion |
US5032318A (en) * | 1988-04-01 | 1991-07-16 | E. I. Du Pont De Nemours And Company | Process of inhibiting corrosion |
US5032317A (en) * | 1988-03-25 | 1991-07-16 | E. I. Du Pont De Nemours And Company | Process of inhibiting corrosion |
US5352383A (en) * | 1991-10-18 | 1994-10-04 | Centrax International Corp. | Corrosion inhibitor and sealable thread protector end cap for tubular goods |
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US2330524A (en) * | 1941-06-16 | 1943-09-28 | Alox Corp | Corrosion inhibitor |
US2421311A (en) * | 1944-01-01 | 1947-05-27 | Gen Mills Inc | Steam generator |
GB596160A (en) * | 1945-07-23 | 1947-12-30 | Edward George Stroud | Improvements in or relating to packaging |
US2629649A (en) * | 1949-10-31 | 1953-02-24 | Shell Dev | Vapor-phase corrosion inhibitor |
Cited By (44)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2976179A (en) * | 1954-08-23 | 1961-03-21 | Exxon Research Engineering Co | Rust preventives |
US2977309A (en) * | 1955-04-21 | 1961-03-28 | Monsanto Chemicals | Lubricating oil containing branched chain alkyl amine derivatives of dicarboxylic acids |
US2936289A (en) * | 1955-05-05 | 1960-05-10 | Olin Mathieson | Water treating composition |
US2878191A (en) * | 1956-10-22 | 1959-03-17 | Dow Chemical Co | Non-corrodent aqueous media |
US2952635A (en) * | 1957-03-29 | 1960-09-13 | Geigy Chem Corp | Process for preventing corrosion of ferrous metals and composition therefor |
DE1084544B (en) * | 1957-12-09 | 1960-06-30 | Michel Louis Julien Bernard | Means for preventing the corrosion of metals by oxidizing substances containing chlorine and its application |
US3169116A (en) * | 1960-02-02 | 1965-02-09 | Maurice S Baseman | Corrosion inhibiting compsoitions |
US3257162A (en) * | 1961-12-12 | 1966-06-21 | Omega Chemicals Corp | Inhibition of volatilization of aqueous organic mixtures |
US3382031A (en) * | 1961-12-12 | 1968-05-07 | Omega Chemicals Corp | Inhibition of volatilization of volatile organic compounds |
US3420789A (en) * | 1962-03-26 | 1969-01-07 | Coates Brothers & Co | Polyamide resins having solubility and resistance to gelling in alcohol solutions |
US3433607A (en) * | 1965-08-02 | 1969-03-18 | Gulf Research Development Co | Quaternary ammonium salts of esters of salicylic acid as rust inhibitors |
US4116701A (en) * | 1977-03-08 | 1978-09-26 | Conner Alvin James Sen | Metal corrosion inhibitor |
US4338209A (en) * | 1977-10-01 | 1982-07-06 | Otsuka Chemical Co., Ltd. | Metal corrosion inhibitor |
US4290912A (en) * | 1980-02-21 | 1981-09-22 | Northern Instruments Corporation | Volatile corrosion inhibiting article |
EP0070482A2 (en) * | 1981-07-20 | 1983-01-26 | Sika AG, vorm. Kaspar Winkler & Co. | Process for corrosion-protection of reinforcing iron elements or tension cables in building parts |
EP0070482A3 (en) * | 1981-07-20 | 1983-07-27 | Sika Ag | Process for corrosion-protection of reinforcing iron elements or tension cables in building parts |
US4478604A (en) * | 1982-04-01 | 1984-10-23 | Phillips Petroleum Company | Gasoline compositions containing branched chain amines or derivatives thereof |
US4600530A (en) * | 1985-03-27 | 1986-07-15 | E. I. Du Pont De Nemours And Company | Aerosol corrosion inhibitors |
US4602958A (en) * | 1985-04-09 | 1986-07-29 | E. I. Du Pont De Nemours And Company | Aerosol corrosion inhibitors |
US5032317A (en) * | 1988-03-25 | 1991-07-16 | E. I. Du Pont De Nemours And Company | Process of inhibiting corrosion |
US5030385A (en) * | 1988-03-25 | 1991-07-09 | E. I. Du Pont De Nemours And Company | Process of inhibiting corrosion |
US5032318A (en) * | 1988-04-01 | 1991-07-16 | E. I. Du Pont De Nemours And Company | Process of inhibiting corrosion |
US4894169A (en) * | 1988-04-04 | 1990-01-16 | Merck & Co., Inc. | Method of inhibiting iron salt deposition in aqueous systems using urea salts |
US4923566A (en) * | 1988-07-19 | 1990-05-08 | Nalco Chemical Company | Method of pacifying stickies in paper |
US5352383A (en) * | 1991-10-18 | 1994-10-04 | Centrax International Corp. | Corrosion inhibitor and sealable thread protector end cap for tubular goods |
US5413676A (en) * | 1992-07-22 | 1995-05-09 | Chicopee | Cellulosic fiber of improved wettability |
US6770576B2 (en) | 1998-12-24 | 2004-08-03 | Bki Holding Corporation | Absorbent structures of chemically treated cellulose fibers |
US6562743B1 (en) | 1998-12-24 | 2003-05-13 | Bki Holding Corporation | Absorbent structures of chemically treated cellulose fibers |
US20030157857A1 (en) * | 1998-12-24 | 2003-08-21 | Bki Holding Corporation | Absorbent structures of chemically treated cellulose fibers |
US20040224588A1 (en) * | 1998-12-24 | 2004-11-11 | Bki Holding Corporation | Absorbent structures of chemically treated cellulose fibers |
US20040173779A1 (en) * | 2002-01-22 | 2004-09-09 | Gencer Mehmet A. | Biodegradable shaped article containing a corrosion inhibitor and inert filler particles |
US8008373B2 (en) | 2002-01-22 | 2011-08-30 | Northern Technologies International Corp. | Biodegradable polymer masterbatch, and a composition derived therefrom having improved physical properties |
US20040063837A1 (en) * | 2002-01-22 | 2004-04-01 | Kubik Donald Alfons | Tarnish inhibiting composition and article containing it |
US20030220436A1 (en) * | 2002-01-22 | 2003-11-27 | Gencer Mehmet A. | Biodegradable polymers containing one or more inhibitors and methods for producing same |
US20040069972A1 (en) * | 2002-01-22 | 2004-04-15 | Kubik Donald Alfons | Corrosion inhibiting composition and article containing it |
US7261839B2 (en) | 2002-01-22 | 2007-08-28 | Northern Technologies International Corp. | Tarnish inhibiting composition and article containing it |
US7270775B2 (en) | 2002-01-22 | 2007-09-18 | Northern Technologies International Corp. | Corrosion inhibiting composition and article containing it |
US20080064812A1 (en) * | 2002-01-22 | 2008-03-13 | Ramani Narayan | Biodegradable polymer masterbatch, and a composition derived therefrom having improved physical properties |
US20060292951A1 (en) * | 2003-12-19 | 2006-12-28 | Bki Holding Corporation | Fibers of variable wettability and materials containing the fibers |
US8946100B2 (en) | 2003-12-19 | 2015-02-03 | Buckeye Technologies Inc. | Fibers of variable wettability and materials containing the fibers |
US10300457B2 (en) | 2003-12-19 | 2019-05-28 | Georgia-Pacific Nonwovens LLC | Fibers of variable wettability and materials containing the fibers |
EP2357266A1 (en) * | 2010-01-28 | 2011-08-17 | EXCOR Korrosionsforschung GmbH | Compositions of vapour-phase corrosion inhibitors, method for their production and use of same for temporary corrosion protection |
EP3677706A1 (en) * | 2019-01-04 | 2020-07-08 | EXCOR Korrosionsforschung GmbH | Compositions and method for pre-treating substrates for subsequent fixation of vapor phase corrosion inhibitors |
US11827806B2 (en) | 2019-01-04 | 2023-11-28 | Excor Korrosionsforschung Gmbh | Compositions and methods for pretreating substrates for the subsequent fixing of vapor phase corrosion inhibitors |
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