GB532661A - Improvements in or relating to the cleaning and pickling of metals and to compositions for use therein - Google Patents
Improvements in or relating to the cleaning and pickling of metals and to compositions for use thereinInfo
- Publication number
- GB532661A GB532661A GB1193639A GB1193639A GB532661A GB 532661 A GB532661 A GB 532661A GB 1193639 A GB1193639 A GB 1193639A GB 1193639 A GB1193639 A GB 1193639A GB 532661 A GB532661 A GB 532661A
- Authority
- GB
- United Kingdom
- Prior art keywords
- sulphamic acid
- pickling
- paste
- weight
- cleaning
- 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
- C23G1/00—Cleaning or pickling metallic material with solutions or molten salts
- C23G1/02—Cleaning or pickling metallic material with solutions or molten salts with acid solutions
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)
Abstract
532,661. Pickling ; cleansing compositions. DU PONT DE NEMOURS & CO., E. I., and HUNT, J. K. April 20, 1939, No. 11936. [Class 82 (ii)] [Also in Group III] A process for cleaning and pickling metal and other surfaces contaminated with rust or other metallic oxides comprises applying to the said surfaces a composition consisting of an aqueous solution of a water-soluble compound containing the sulphamic acid radicle NH 2 SO 3 , e.g. ammonium sulphamate or sulphamic acid. The solution may also include an inhibitor and/or a wetting agent such as alkaline soaps of fatty acids or turkey red oil. The solution may be converted into the form of a paste by adding a bodying agent such as glycerol or colloidal minerals, e.g. clay. Abrasives may also be. added. The paste is applied to the surface to be treated, preferably with a damp cloth. For pickling metals such as copper, brass, iron or steel, solutions of sulphamic acid are used preferably with the addition of an inhibitor such as cinchona bark alkaloid or pyridine derivatives or thioureas. An example of such a bath is one containing ten per cent. by weight of sulphamic acid and 0.025 per cent. by weight of sulphurized quinodine, the temperature of the bath being 150‹F. An example of a paste cleaning composition is one containing 20 parts by weight of Bentonite clay, 30 of water, 2 of octyl alcohol sulphate and 10 of sulphamic acid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1193639A GB532661A (en) | 1939-04-20 | 1939-04-20 | Improvements in or relating to the cleaning and pickling of metals and to compositions for use therein |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1193639A GB532661A (en) | 1939-04-20 | 1939-04-20 | Improvements in or relating to the cleaning and pickling of metals and to compositions for use therein |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB532661A true GB532661A (en) | 1941-01-29 |
Family
ID=9995357
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1193639A Expired GB532661A (en) | 1939-04-20 | 1939-04-20 | Improvements in or relating to the cleaning and pickling of metals and to compositions for use therein |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB532661A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3216857A (en) * | 1962-05-21 | 1965-11-09 | Wyandotte Chemicals Corp | Process for removal of carbonaceous deposits |
| CN115110085A (en) * | 2021-10-23 | 2022-09-27 | 赵晓峰 | Novel method for improving stripping process in copper and alloy hydrogen peroxide chemical polishing system |
-
1939
- 1939-04-20 GB GB1193639A patent/GB532661A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3216857A (en) * | 1962-05-21 | 1965-11-09 | Wyandotte Chemicals Corp | Process for removal of carbonaceous deposits |
| CN115110085A (en) * | 2021-10-23 | 2022-09-27 | 赵晓峰 | Novel method for improving stripping process in copper and alloy hydrogen peroxide chemical polishing system |
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