US2196261A - Corrosion inhibitor - Google Patents
Corrosion inhibitor Download PDFInfo
- Publication number
- US2196261A US2196261A US182170A US18217037A US2196261A US 2196261 A US2196261 A US 2196261A US 182170 A US182170 A US 182170A US 18217037 A US18217037 A US 18217037A US 2196261 A US2196261 A US 2196261A
- Authority
- US
- United States
- Prior art keywords
- corrosion
- oils
- corrosion inhibitor
- compounds
- metal
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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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
- C23F11/08—Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent in other liquids
- C23F11/10—Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent in other liquids using organic inhibitors
- C23F11/14—Nitrogen-containing compounds
- C23F11/141—Amines; Quaternary ammonium compounds
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M1/00—Liquid compositions essentially based on mineral lubricating oils or fatty oils; Their use as lubricants
- C10M1/08—Liquid compositions essentially based on mineral lubricating oils or fatty oils; Their use as lubricants with additives
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2215/00—Organic non-macromolecular compounds containing nitrogen as ingredients in lubricant compositions
- C10M2215/02—Amines, e.g. polyalkylene polyamines; Quaternary amines
- C10M2215/04—Amines, e.g. polyalkylene polyamines; Quaternary amines having amino groups bound to acyclic or cycloaliphatic carbon atoms
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2215/00—Organic non-macromolecular compounds containing nitrogen as ingredients in lubricant compositions
- C10M2215/26—Amines
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2030/00—Specified physical or chemical properties which is improved by the additive characterising the lubricating composition, e.g. multifunctional additives
- C10N2030/12—Inhibition of corrosion, e.g. anti-rust agents or anti-corrosives
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2040/00—Specified use or application for which the lubricating composition is intended
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2040/00—Specified use or application for which the lubricating composition is intended
- C10N2040/06—Instruments or other precision apparatus, e.g. damping fluids
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2040/00—Specified use or application for which the lubricating composition is intended
- C10N2040/08—Hydraulic fluids, e.g. brake-fluids
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2040/00—Specified use or application for which the lubricating composition is intended
- C10N2040/30—Refrigerators lubricants or compressors lubricants
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2040/00—Specified use or application for which the lubricating composition is intended
- C10N2040/32—Wires, ropes or cables lubricants
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2040/00—Specified use or application for which the lubricating composition is intended
- C10N2040/34—Lubricating-sealants
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2040/00—Specified use or application for which the lubricating composition is intended
- C10N2040/36—Release agents or mold release agents
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2040/00—Specified use or application for which the lubricating composition is intended
- C10N2040/38—Conveyors or chain belts
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2040/00—Specified use or application for which the lubricating composition is intended
- C10N2040/40—Generators or electric motors in oil or gas winning field
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2040/00—Specified use or application for which the lubricating composition is intended
- C10N2040/42—Flashing oils or marking oils
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2040/00—Specified use or application for which the lubricating composition is intended
- C10N2040/44—Super vacuum or supercritical use
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2040/00—Specified use or application for which the lubricating composition is intended
- C10N2040/46—Textile oils
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2040/00—Specified use or application for which the lubricating composition is intended
- C10N2040/50—Medical uses
Definitions
- Patented AprgQ, 194G U iT m not been found sumciently corrosion.
- the present invention aims to provide chemicals which may be employed with such oils to reduce the corrosion of the metal.
- the corrosion inhibitors of the present invention are compounds of the general formula x1 aralkylI l'X wherein X and'XI are hydrogen, alkyl, or aralkyl,
- the chemical may be incorporated in liquids used in cooling systems of internal combustion engines 20 such as monohydric or polyhydric alcohols, in lubricating oils, in textile oils, in shock absorbers,
- compounds containing one or more aralkyl substituents directly linked to an amino nitrogen atom are also broadly, ammonia compounds in which at least one, and preferably not more than two of the hydrogens connected to the nitrogen atom, has been replaced by an aralkyl group, the aliphatic portion of the radical being directly connected to the nitrogen atom.
- Compounds which are particularly effective are the monobenzylamine; dibenzylamine, and mixtures thereof.
- One way of preparing such compounds is by reacting an aralkyl halide, e. g. benzyl chloride, with excess aqueous sure in an autoclave, e. g. isolating, or not, the desired reaction products from the crude reaction product by distillation.
- Example 1 Freshly pickled weighed and added to a 15%, water solution.
- the alcohol ammonia which may be recovered for re-use in the process.
- the oily layer which separates out is a crude mixture of benzylamines and may be fractionally distilled in vacuo thereby recovering a fraction boiling at 80-100 which consists largely of in well as a fraction boiling at mm. Hg. which is chiefly dibenzylamine.
- These two products may be blended, a being one containing abou and about 25% monobenzylamine. Cru reaction mixture may be used as such for corrosion inhibiting purposes.
- benzylamines such as ammonia, under presat about 130 C.
- Example 2 Pieces of steel, h stock, 3"x 4", which had been pickled, were coated with so-called "slushing oils. Another set of steel pieces were pickled and coated with slushing oil containing 1% hibitor; It was observed that coated with slushing oil graduall as, the steel plates coated with taining the inhibitor remained of aqua amtors may render certain media towards metals or alloys, it is tralize the inhibitor as by the phoric acid, oleic acid, palmitic acid or stearic acid thereby providing a salt of the inhibitor.
- Examples of other aralk scope of the invention are a] such as methyl benzylamin 0t rolled tin plate of the same inthe steel pieces 40 y rusted; whereslushing oil conbright and free In some cases where the alkalinity of the inhibiunduly corrosive advisable to neuaddition of phosylamines within the kyl benzylamines e, ethyl benzylamine, beta-phenylethylamine,
- oils that are commonly used to keep tools and machinery from rusting or to keep pickled steel from rusting on storage of in transit greatly increases the antirust properties of such oils.
- Other uses are for petroleum oils (refined and/or in crude oils that sulphur), air-conditioning systems tires, boilers (boiler water) fire extinguisher solutions, etc. i
- the inhibitors sh uld be used in quantity sufficient to inhibit the corrosion of the metal, .1 to 5% by weight of the inhibitor being ordinarily sumcient.
- the method of inhibiting the corrosion of metals caused by contact with fluids having a corrosive influence on the metal surfaces which comprises coating the surface of the metal with such fluids containing a dibenzylamine com- 10 pound.
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Preventing Corrosion Or Incrustation Of Metals (AREA)
Description
Patented AprgQ, 194G U iT m not been found sumciently corrosion. The present invention aims to provide chemicals which may be employed with such oils to reduce the corrosion of the metal.
aims to provide chemicals in hydraulic lifts, etc.
The corrosion inhibitors of the present invention are compounds of the general formula x1 aralkylI l'X wherein X and'XI are hydrogen, alkyl, or aralkyl,
that is, are nitrogenous or metal surfaces wherever the metal comes in contact with fluids causing or tending to cause corrosion of the metal surface, for example, the chemical may be incorporated in liquids used in cooling systems of internal combustion engines 20 such as monohydric or polyhydric alcohols, in lubricating oils, in textile oils, in shock absorbers,
v "STA-ms PATENT; OFFICE 2,196,261 CORROSION mnmrron Louis B. Howland, Nutley, and William P. tot
Horst, Packanack Lake, N. J., assignors, by mesne assignments, to United States Rubber Company, New York, N. Y., a corporation of New Jersey No Drawing. Application December 28, 1937, Serial No. 182,170
1 Claim. (Cl. 148-6) effective to prevent the It further as corrosion inhibitors composed essentially of di .12% soap and .12%
benzylamine.
were as follows:
compounds containing one or more aralkyl substituents directly linked to an amino nitrogen atom. are also broadly, ammonia compounds in which at least one, and preferably not more than two of the hydrogens connected to the nitrogen atom, has been replaced by an aralkyl group, the aliphatic portion of the radical being directly connected to the nitrogen atom. Compounds which are particularly effective are the monobenzylamine; dibenzylamine, and mixtures thereof. One way of preparing such compounds is by reacting an aralkyl halide, e. g. benzyl chloride, with excess aqueous sure in an autoclave, e. g. isolating, or not, the desired reaction products from the crude reaction product by distillation.
In one such method 605 pounds monia heated to about C. at a pressure of about 250 lbs. per square inch, has slowly added to it about 250 pounds of benzyl chloride. The re- 30 action temperature is about C. and is maintained about 1 hour, at the end of which time the pressure usually has dropped to approximately lbs. per square inch, after which the mix is benzylamine illustrate the effective class of corrosion inhibitors:
Example 1.Freshly pickled weighed and added to a 15%, water solution. The alcohol ammonia which may be recovered for re-use in the process. The oily layer which separates out is a crude mixture of benzylamines and may be fractionally distilled in vacuo thereby recovering a fraction boiling at 80-100 which consists largely of in well as a fraction boiling at mm. Hg. which is chiefly dibenzylamine. These two products may be blended, a being one containing abou and about 25% monobenzylamine. crude reaction mixture may be used as such for corrosion inhibiting purposes.
The following examples empl C. at 5-10 mm. Hg. onobenzylamine, as -200 C. at 5-10 desirable blend t 75% dibenzylamine However, the
oying a product benzylamine and mononess of this steel plates were by volume, alcoholsolution contained of a product consisting essentially of 25% monobenzylamine and 75% di- The solution was heated to 60 C. and air was bubbledthrough rapidly for 26 hours. The amount of corrosion was determined by visual observation and by increase in weight, the results Blank (soap Soa solution-{- hibltor These compounds Weight increase .061 gram Visual test Heavy rust.
.007 gram. No rust.
benzylamines, such as ammonia, under presat about 130 C., and
from rust.
cooled and treated with about 300 pounds of a isopropyl benzylamine, 5 50 percent caustic soda solution to liberate excess etc.
Example 2.-Pieces of steel, h stock, 3"x 4", which had been pickled, were coated with so-called "slushing oils. Another set of steel pieces were pickled and coated with slushing oil containing 1% hibitor; It was observed that coated with slushing oil graduall as, the steel plates coated with taining the inhibitor remained of aqua amtors may render certain media towards metals or alloys, it is tralize the inhibitor as by the phoric acid, oleic acid, palmitic acid or stearic acid thereby providing a salt of the inhibitor.
Examples of other aralk scope of the invention are a] such as methyl benzylamin 0t rolled tin plate of the same inthe steel pieces 40 y rusted; whereslushing oil conbright and free In some cases where the alkalinity of the inhibiunduly corrosive advisable to neuaddition of phosylamines within the kyl benzylamines e, ethyl benzylamine, beta-phenylethylamine,
1 contain (humidiflcation) tire molds, valves, bead-wire for The addition of soap greatly increases the eflectiveness oi. the inhibitors, especially when used in aqueous media. I
The addition of the inhibitors to oils that are commonly used to keep tools and machinery from rusting or to keep pickled steel from rusting on storage of in transit greatly increases the antirust properties of such oils. Other uses are for petroleum oils (refined and/or in crude oils that sulphur), air-conditioning systems tires, boilers (boiler water) fire extinguisher solutions, etc. i
The inhibitors sh uld be used in quantity sufficient to inhibit the corrosion of the metal, .1 to 5% by weight of the inhibitor being ordinarily sumcient.
Having thus described our invention, what we claim and desire to protect by Letters Patent is:
The method of inhibiting the corrosion of metals caused by contact with fluids having a corrosive influence on the metal surfaces, which comprises coating the surface of the metal with such fluids containing a dibenzylamine com- 10 pound.
LOUIS H. HOWLAND. WHLIAM P. rm HORST.
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US182170A US2196261A (en) | 1937-12-28 | 1937-12-28 | Corrosion inhibitor |
US297348A US2308282A (en) | 1937-12-28 | 1939-09-30 | Corrosion inhibitor |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US182170A US2196261A (en) | 1937-12-28 | 1937-12-28 | Corrosion inhibitor |
Publications (1)
Publication Number | Publication Date |
---|---|
US2196261A true US2196261A (en) | 1940-04-09 |
Family
ID=22667329
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US182170A Expired - Lifetime US2196261A (en) | 1937-12-28 | 1937-12-28 | Corrosion inhibitor |
Country Status (1)
Country | Link |
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US (1) | US2196261A (en) |
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2416734A (en) * | 1943-06-10 | 1947-03-04 | Rapinwax Paper Company | Greaseproof paper |
US2440375A (en) * | 1941-04-26 | 1948-04-27 | Texas Co | Lubricating oil |
US2562571A (en) * | 1945-05-30 | 1951-07-31 | Hall Lab Inc | Treatment of steam systems |
US2608584A (en) * | 1947-03-19 | 1952-08-26 | Nopco Chem Co | Preparation of n-alkyl arylamines |
US2613226A (en) * | 1951-01-05 | 1952-10-07 | Rohm & Haas | Benzyl-tert.-octylamine |
US2632709A (en) * | 1949-07-19 | 1953-03-24 | Shell Dev | Rust inhibiting composition |
US2952635A (en) * | 1957-03-29 | 1960-09-13 | Geigy Chem Corp | Process for preventing corrosion of ferrous metals and composition therefor |
US3017696A (en) * | 1957-03-11 | 1962-01-23 | Griscom Russell Co | Corrosion-resistant surface |
US5089226A (en) * | 1986-01-20 | 1992-02-18 | Nippon Mining Co., Ltd. | Method for protecting austenitic stainless steel-made equipment from occurrence of stress-corrosion cracking |
-
1937
- 1937-12-28 US US182170A patent/US2196261A/en not_active Expired - Lifetime
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2440375A (en) * | 1941-04-26 | 1948-04-27 | Texas Co | Lubricating oil |
US2416734A (en) * | 1943-06-10 | 1947-03-04 | Rapinwax Paper Company | Greaseproof paper |
US2562571A (en) * | 1945-05-30 | 1951-07-31 | Hall Lab Inc | Treatment of steam systems |
US2608584A (en) * | 1947-03-19 | 1952-08-26 | Nopco Chem Co | Preparation of n-alkyl arylamines |
US2632709A (en) * | 1949-07-19 | 1953-03-24 | Shell Dev | Rust inhibiting composition |
US2613226A (en) * | 1951-01-05 | 1952-10-07 | Rohm & Haas | Benzyl-tert.-octylamine |
US3017696A (en) * | 1957-03-11 | 1962-01-23 | Griscom Russell Co | Corrosion-resistant surface |
US2952635A (en) * | 1957-03-29 | 1960-09-13 | Geigy Chem Corp | Process for preventing corrosion of ferrous metals and composition therefor |
US5089226A (en) * | 1986-01-20 | 1992-02-18 | Nippon Mining Co., Ltd. | Method for protecting austenitic stainless steel-made equipment from occurrence of stress-corrosion cracking |
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