GB1201511A - Cleaning solutions and method of cleaning metals - Google Patents

Cleaning solutions and method of cleaning metals

Info

Publication number
GB1201511A
GB1201511A GB41894/67A GB4189467A GB1201511A GB 1201511 A GB1201511 A GB 1201511A GB 41894/67 A GB41894/67 A GB 41894/67A GB 4189467 A GB4189467 A GB 4189467A GB 1201511 A GB1201511 A GB 1201511A
Authority
GB
United Kingdom
Prior art keywords
acid
cleaning
amine
sulphides
aminoethyl
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
Application number
GB41894/67A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Dow Chemical Co
Original Assignee
Dow Chemical Co
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Dow Chemical Co filed Critical Dow Chemical Co
Publication of GB1201511A publication Critical patent/GB1201511A/en
Expired legal-status Critical Current

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C23COATING 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
    • C23GCLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
    • C23G1/00Cleaning or pickling metallic material with solutions or molten salts
    • C23G1/14Cleaning or pickling metallic material with solutions or molten salts with alkaline solutions
    • C23G1/16Cleaning or pickling metallic material with solutions or molten salts with alkaline solutions using inhibitors
    • C23G1/18Organic inhibitors
    • CCHEMISTRY; METALLURGY
    • C23COATING 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
    • C23GCLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
    • C23G1/00Cleaning or pickling metallic material with solutions or molten salts
    • C23G1/24Cleaning or pickling metallic material with solutions or molten salts with neutral solutions
    • C23G1/26Cleaning or pickling metallic material with solutions or molten salts with neutral solutions using inhibitors

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)
  • Detergent Compositions (AREA)

Abstract

1,201,511. Cleaning metals. DOW CHEMICAL CO. Sept.14, 1967 [Sept.15, 1966], No.41894/67. Heading C7E. Corrosion of metal surfaces while these are being cleaned with alkaline or neutral aqueous solutions with pHs of 7 to 10 of poly-carboxylic acid ammonium or amine complexing or chelating agents is prevented by including in the solution as an inhibitor at least one thioethylamine of formula wherein A is hydrogen or a 1 to 5 carbon alkyl group or a radical of Formula wherein R<1> is an alkyl group, X is 1 or 2, each RÀ may be hydrogen or a 1 to 5 carbon alkyl group and m is 1 to 8, n is 1 to 8, or a hydrosulphide salt thereof or a thioethylamine of formula wherein each R is as above defined and 0 is 1 to 3. Preferably the additive is bis-(2-aminoethyl) sulphide. The solutions contain 0À5 to 40% by weight of the complexing agent and 0À01 to 0À5% by weight of the additive, and may contain 0À01 to 0À20% by weight of an amine-ketone-aldehyde-fatty acid adduct, while sodium nitrite or potassium chromate or air may be introduced during the later stages of cleaning to oxidize any copper present, preferably when the temperature of the cleaning solution has fallen to below 85‹ C. Sulphur-containing amine compounds suitable for use as inhibitors include polyalkyleneamine sulphides and mercaptans, hydroxyalkyl polyalkyleneamine sulphides and polyalkylenepolyamine sulphides, disulphides and mercaptans. Specifically suitable compounds are: bis-(2-aminoethyl) sulphide; bis (2-aminoethyl) disulphide 3-aza-5- thiaoctane, 1, 8-diamine; beta-mercaptoethylamine; thiazolidine; 2-(aminoethylthio) ethanol; thiazole and 2, 2-dimethyl thiazole. Suitable chelating or complexing agents include the alkylene polyamine polyacetic acids EDTA, N-hydroxyethyl ethylenediamine triacetic acid, ethylenediaminetetrapropionic acid, nitriloacetic acid, N-2- hydroxyethyliminodiacetic acid tetramethylene - diamine-N, N, N<1>, N<1> -tetracetic acid, (alphahydroxy ethylimino) diacetic acid, and diethylene triamine pentaacetic acid and N, N-di(#-hydroxyethyl) glycine, and citric acid and tartaric acid. The solutions are normally made alkaline with ammonia or with ethanolamine, ethylamine, ethylenediamine, diethylenetriamine, pentaethylenehexamine, dimethylamine, trimethylamine, ethyleneamine or other amine.
GB41894/67A 1966-09-15 1967-09-14 Cleaning solutions and method of cleaning metals Expired GB1201511A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US57950266A 1966-09-15 1966-09-15

Publications (1)

Publication Number Publication Date
GB1201511A true GB1201511A (en) 1970-08-05

Family

ID=24317149

Family Applications (1)

Application Number Title Priority Date Filing Date
GB41894/67A Expired GB1201511A (en) 1966-09-15 1967-09-14 Cleaning solutions and method of cleaning metals

Country Status (6)

Country Link
US (1) US3490741A (en)
BE (1) BE703914A (en)
DE (1) DE1621567A1 (en)
FR (1) FR1552899A (en)
GB (1) GB1201511A (en)
NL (1) NL6712577A (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3627687A (en) * 1968-02-09 1971-12-14 Dow Chemical Co Cleaning of ferrous metal surfaces
DE2730645A1 (en) * 1977-07-07 1979-01-25 Henkel Kgaa USE OF TELOMERISATS MADE OF MERCAPTANES WITH ACRYLIC COMPOUNDS AS STONE PROTECTION AND / OR CORROSION PROTECTION AGENTS
US4721532A (en) * 1985-08-05 1988-01-26 W. R. Grace & Co. Removal of iron fouling in cooling water systems
GB2184109A (en) * 1985-10-29 1987-06-17 Grace W R & Co The treatment of aqueous systems
US5451335A (en) * 1991-05-16 1995-09-19 H.E.R.C. Products Incorporated 1:1 soap compositions of acids and amines or ammonia useful in removal and prevention of scale
US5322635A (en) * 1991-05-16 1994-06-21 H.E.R.C. Incorporated Soap compositions of carboxylic acids and amines useful in removal and prevention of scale
US6852879B2 (en) * 2001-10-05 2005-02-08 Bp Corporation North America Inc. Method of removing iron oxide deposits from the surface of titanium components
JP2010171362A (en) * 2008-12-26 2010-08-05 Fujifilm Corp Cleaning agent for semiconductor device and method for manufacturing the semiconductor device using the same

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2238651A (en) * 1937-05-21 1941-04-15 Du Pont Inhibition of corrosion
US2394774A (en) * 1940-12-11 1946-02-12 American Cyanamid Co Pickling inhibitors
US2373291A (en) * 1941-08-15 1945-04-10 Mathieson Alkali Works Inc Pickling bath for metals
US3185646A (en) * 1962-09-28 1965-05-25 California Research Corp Corrosion inhibited lubricants

Also Published As

Publication number Publication date
US3490741A (en) 1970-01-20
FR1552899A (en) 1969-01-10
BE703914A (en) 1968-03-15
DE1621567A1 (en) 1971-05-13
NL6712577A (en) 1968-03-18

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PE20 Patent expired after termination of 20 years