GB488656A - Improvements in pickling metals - Google Patents
Improvements in pickling metalsInfo
- Publication number
- GB488656A GB488656A GB34000/36A GB3400036A GB488656A GB 488656 A GB488656 A GB 488656A GB 34000/36 A GB34000/36 A GB 34000/36A GB 3400036 A GB3400036 A GB 3400036A GB 488656 A GB488656 A GB 488656A
- Authority
- GB
- United Kingdom
- Prior art keywords
- liquid
- acid
- per cent
- alcohol
- water
- 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
Links
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
- C23G—CLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
- C23G5/00—Cleaning or de-greasing metallic material by other methods; Apparatus for cleaning or de-greasing metallic material with organic solvents
- C23G5/02—Cleaning or de-greasing metallic material by other methods; Apparatus for cleaning or de-greasing metallic material with organic solvents using organic solvents
- C23G5/032—Cleaning or de-greasing metallic material by other methods; Apparatus for cleaning or de-greasing metallic material with organic solvents using organic solvents containing oxygen-containing compounds
Abstract
A composition for cleaning metals such as iron, copper, and their alloys consists of a fatty liquid which contains a pickling agent in solution and which is of less density than water and substantially immiscible therewith. The liquid may be made into a paste by the addition of an inert powdered material. The liquid preferably consists of a mixture of an alcohol or phenol, a saturated or unsaturated aliphatic acid, and a pickling acid such as hydrochloric or acetic which is soluble in the alcohol or phenol. The alcohol may be one or more of amyl, and butyl alcohols and their higher homologues, and the etherified or esterified derivatives of glycols. The aliphatic acid may be, for example, undecylenic acid, oleic acid, or stearic acid. Glycerides may be added to the liquid, and, to prevent action of the liquid or the metal, a small amount of trioxymethylene may be added. An example of a suitable liquid is 10 per cent of undecylenic acid, 5 per cent of anhydrous acetic acid, 15 per cent of 22 DEG B<\>ae. hydrochloric acid solution, and 70 per cent of butanol. U.S.A. Specification 1,993,097 is referred to. The Specification as open to inspection under Sect. 91 refers also to the use of methyl and ethyl alcohols and glycols as constituents of the liquid. This subject-matter does not appear in the Specification as accepted.ALSO:Superficial impurities, e.g. oxides, are removed from the surfaces of metals, e.g. iron, copper, and their alloys, by treatment of the surfaces by immersion, spraying, brushing, &c. with a fatty liquid which contains a pickling agent in solution and which is of less density than water and substantially immiscible therewith. The liquid may be made into a paste by the addition of an inert powdered material. The water &c. produced by the action of pickling agent on the metal and the oxides does not mix with the cleaning liquid and can be withdrawn; the process can be made continuous by using a bath of the liquid, continuously withdrawing any water &c. from the bottom of the bath and continuously feeding regenerating liquid to the bath. The liquid is preferably formed by mixing an alcohol or phenol, a saturated or unsaturated aliphatic acid, and a pickling acid such as hydrochloric or acetic which is soluble in the alcohol or phenol. The alcohol may be one or more of amyl and butyl alcohols and their higher homologues, and etherified or esterified derivatives of glycols. The aliphatic acid may be, for example, undecylenic acid, oleic acid, or stearic acid. Glycerides may be added to the liquid, and, to prevent action of the liquid on the metal, a small amount of trioxymethylene may be added. An example of a suitable liquid is 10 per cent of undecylenic acid, 5 per cent of anhydrous acetic acid, 15 per cent of 22 DEG B<\>ae. hydrochloric acid solution, and 70 per cent of butanol. The liquid may be used hot or cold, and after pickling the metal is washed e.g. with water, benzene, or a mixture of petrol and alcohol, and may be neutralized with a bath of lime water, sodium carbonate, &c. U.S.A. Specification 1,993,097 is referred to. The Specification as open to inspection under Sect. 91 refers also to the use of methyl and ethyl alcohols and glycols as constituents of the liquid. This subject-matter does not appear in the Specification as accepted.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR698197X | 1935-12-10 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB488656A true GB488656A (en) | 1938-07-11 |
Family
ID=9047566
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB34000/36A Expired GB488656A (en) | 1935-12-10 | 1936-12-10 | Improvements in pickling metals |
Country Status (5)
Country | Link |
---|---|
US (1) | US2152406A (en) |
BE (1) | BE418799A (en) |
DE (1) | DE698197C (en) |
FR (2) | FR810719A (en) |
GB (1) | GB488656A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2472786A (en) * | 1943-08-21 | 1949-06-14 | Sylvania Electric Prod | Method of pickling metal contact surfaces |
GB2207442B (en) * | 1987-07-09 | 1991-06-19 | Inco Alloys Int | Method for surface activation of water atomized powders |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2993865A (en) * | 1956-08-02 | 1961-07-25 | Dow Chemical Co | Corrosion inhibitors for aluminum |
US2993864A (en) * | 1956-08-02 | 1961-07-25 | Dow Chemical Co | Ethynylcyclohexyl compounds as corrosion inhibitors |
US2993863A (en) * | 1956-08-02 | 1961-07-25 | Dow Chemical Co | Halogenated propargyl alcohols as corrosion inhibitors |
US2993862A (en) * | 1956-08-02 | 1961-07-25 | Dow Chemical Co | Acetylenic glycols as corrosion inhibitors |
US3065184A (en) * | 1957-09-27 | 1962-11-20 | Harvel Res Corp | Acetone-formaldehyde reaction product corrosion inhibitor |
US3293186A (en) * | 1963-04-15 | 1966-12-20 | Polychrome Corp | Adding and restoring image areas to plates |
DE1199791B (en) * | 1963-10-04 | 1965-09-02 | Kalle Ag | Cleaning solutions for flat printing forms |
-
0
- BE BE418799D patent/BE418799A/xx unknown
-
1935
- 1935-12-10 FR FR810719D patent/FR810719A/en not_active Expired
-
1936
- 1936-03-28 FR FR47895D patent/FR47895E/en not_active Expired
- 1936-12-08 US US114871A patent/US2152406A/en not_active Expired - Lifetime
- 1936-12-10 DE DE1936D0074111 patent/DE698197C/en not_active Expired
- 1936-12-10 GB GB34000/36A patent/GB488656A/en not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2472786A (en) * | 1943-08-21 | 1949-06-14 | Sylvania Electric Prod | Method of pickling metal contact surfaces |
GB2207442B (en) * | 1987-07-09 | 1991-06-19 | Inco Alloys Int | Method for surface activation of water atomized powders |
Also Published As
Publication number | Publication date |
---|---|
FR810719A (en) | 1937-03-27 |
BE418799A (en) | |
US2152406A (en) | 1939-03-28 |
DE698197C (en) | 1940-11-04 |
FR47895E (en) | 1937-08-14 |
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