GB1308433A - Method for cleaning metal surface - Google Patents
Method for cleaning metal surfaceInfo
- Publication number
- GB1308433A GB1308433A GB175071A GB175071A GB1308433A GB 1308433 A GB1308433 A GB 1308433A GB 175071 A GB175071 A GB 175071A GB 175071 A GB175071 A GB 175071A GB 1308433 A GB1308433 A GB 1308433A
- Authority
- GB
- United Kingdom
- Prior art keywords
- cleaning
- copper
- acid
- alkali metal
- formaldehyde
- 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
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25F—PROCESSES FOR THE ELECTROLYTIC REMOVAL OF MATERIALS FROM OBJECTS; APPARATUS THEREFOR
- C25F1/00—Electrolytic cleaning, degreasing, pickling or descaling
- C25F1/02—Pickling; Descaling
- C25F1/04—Pickling; Descaling in solution
-
- 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
- C23G1/14—Cleaning or pickling metallic material with solutions or molten salts with alkaline solutions
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- Manufacturing Of Printed Wiring (AREA)
Abstract
1308433 Cleaning metal surfaces TOYO INK MFG CO Ltd 13 Jan 1971 [16 Jan 1970] 1750/71 Headings C7B and C7E Metal surfaces are cleaned by contacting them with the aqueous solution of alkali metal salts obtained by an alkali hydrolysis of an aqueous solution of formaldehyde cyanohydrin. The said alkali metal salts are those of glycolic acid, glycine, imino-diacetic acid and nitrilo- triacetic acid. Other components of the cleaning composition may include sodium hydroxide, sodium phosphate, diethylenetriamine-pentaacetic acid, and hexamethylene tetramine. The formaldehyde cyanohydrin may be prepared by reaction of formaldehyde with an alkali metal cyanide. The cleaning may be carried out by immersing the metal in a bath of the cleaning solution and applying an electric potential between it and another electrode immersed in the bath. Examples describe the cleaning of brass, steel and copper prior to electro-plating with copper and silver, zinc, and copper and nickel respectively.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP390370 | 1970-01-16 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1308433A true GB1308433A (en) | 1973-02-21 |
Family
ID=11570138
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB175071A Expired GB1308433A (en) | 1970-01-16 | 1971-01-13 | Method for cleaning metal surface |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB1308433A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2189261A (en) * | 1986-04-11 | 1987-10-21 | Pyrene Chemical Services Ltd | Processes and compositions for abrasive blast cleaning |
US4746453A (en) * | 1986-11-07 | 1988-05-24 | China Steel Corporation | Cleaning composition for electrocleaning cold-rolled steel |
ES2518790A1 (en) * | 2014-09-08 | 2014-11-05 | Universidad De Granada | Procedure and device for cleaning metal surfaces using a direct current (Machine-translation by Google Translate, not legally binding) |
-
1971
- 1971-01-13 GB GB175071A patent/GB1308433A/en not_active Expired
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2189261A (en) * | 1986-04-11 | 1987-10-21 | Pyrene Chemical Services Ltd | Processes and compositions for abrasive blast cleaning |
GB2189261B (en) * | 1986-04-11 | 1990-08-01 | Pyrene Chemical Services Ltd | Processes and compositions for abrasive blast cleaning |
US4746453A (en) * | 1986-11-07 | 1988-05-24 | China Steel Corporation | Cleaning composition for electrocleaning cold-rolled steel |
ES2518790A1 (en) * | 2014-09-08 | 2014-11-05 | Universidad De Granada | Procedure and device for cleaning metal surfaces using a direct current (Machine-translation by Google Translate, not legally binding) |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed | ||
PLNP | Patent lapsed through nonpayment of renewal fees |