GB995500A - Gold plating - Google Patents
Gold platingInfo
- Publication number
- GB995500A GB995500A GB1386762A GB1386762A GB995500A GB 995500 A GB995500 A GB 995500A GB 1386762 A GB1386762 A GB 1386762A GB 1386762 A GB1386762 A GB 1386762A GB 995500 A GB995500 A GB 995500A
- Authority
- GB
- United Kingdom
- Prior art keywords
- hydrazine
- salt
- nitrogen compound
- carbon atoms
- gold
- 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
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D3/00—Electroplating: Baths therefor
- C25D3/02—Electroplating: Baths therefor from solutions
- C25D3/48—Electroplating: Baths therefor from solutions of gold
Abstract
An aqueous gold electroplating bath contains 10-200 g./l. of a salt of a weak stable acid, e.g. citric acid, 4-16 g./l. of gold added as an alkali metal gold cyanide and 1/2 -20 g./l. of a nitrogen compound having the formula <FORM:0995500/C6-C7/1> where the R's are selected from the group consisting of hydrogen, an alkyl group of up to 6 carbon atoms and an aryl group containing 6 carbon atoms and X may be <FORM:0995500/C6-C7/2> -OH or <FORM:0995500/C6-C7/3> the R's being as before, and the bath being adjusted to a pH of 2.5-7, A salt of the nitrogen compound may be used. The nitrogen compound or its salt may be hydrazine, hydrazine sulphate, methyl hydrazine, 1,1-dimethyl hydrazine, hydroxylamine hydrochloride, phenyl hydrazine or urea. Specifications 897,463 and 928,087 are referred to.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US10692461A | 1961-05-01 | 1961-05-01 | |
| US244204A US3156634A (en) | 1962-12-12 | 1962-12-12 | Gold plating |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB995500A true GB995500A (en) | 1965-06-16 |
Family
ID=26804183
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1386762A Expired GB995500A (en) | 1961-05-01 | 1962-04-10 | Gold plating |
| GB4311063A Expired GB1033307A (en) | 1961-05-01 | 1963-10-31 | Gold plating |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB4311063A Expired GB1033307A (en) | 1961-05-01 | 1963-10-31 | Gold plating |
Country Status (6)
| Country | Link |
|---|---|
| BE (1) | BE641175A (en) |
| BR (2) | BR6238162D0 (en) |
| CH (2) | CH403434A (en) |
| DE (2) | DE1218248B (en) |
| GB (2) | GB995500A (en) |
| NL (2) | NL277808A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3562120A (en) * | 1966-09-07 | 1971-02-09 | Sel Rex Corp | Plating of smooth,semibright gold deposits |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL230397A (en) * | 1957-08-13 | |||
| US2967135A (en) * | 1960-06-08 | 1961-01-03 | Barnet D Ostrow | Electroplating baths for hard bright gold deposits |
-
0
- NL NL133679D patent/NL133679C/xx active
- NL NL277808D patent/NL277808A/xx unknown
-
1962
- 1962-04-10 GB GB1386762A patent/GB995500A/en not_active Expired
- 1962-04-17 CH CH466962A patent/CH403434A/en unknown
- 1962-04-17 BR BR13816262A patent/BR6238162D0/en unknown
- 1962-04-30 DE DES79262A patent/DE1218248B/en active Pending
-
1963
- 1963-10-31 GB GB4311063A patent/GB1033307A/en not_active Expired
- 1963-11-27 DE DES88460A patent/DE1222347B/en active Pending
- 1963-11-28 BR BR15493863A patent/BR6354938D0/en unknown
- 1963-11-30 CH CH1473663A patent/CH420777A/en unknown
- 1963-12-12 BE BE641175D patent/BE641175A/xx unknown
Also Published As
| Publication number | Publication date |
|---|---|
| NL277808A (en) | |
| BR6354938D0 (en) | 1973-12-27 |
| NL133679C (en) | |
| GB1033307A (en) | 1966-06-22 |
| BE641175A (en) | 1964-04-01 |
| CH420777A (en) | 1966-09-15 |
| CH403434A (en) | 1965-11-30 |
| BR6238162D0 (en) | 1973-06-12 |
| DE1218248B (en) | 1966-06-02 |
| DE1222347B (en) | 1966-08-04 |
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