GB1251593A - - Google Patents
Info
- Publication number
- GB1251593A GB1251593A GB1251593DA GB1251593A GB 1251593 A GB1251593 A GB 1251593A GB 1251593D A GB1251593D A GB 1251593DA GB 1251593 A GB1251593 A GB 1251593A
- Authority
- GB
- United Kingdom
- Prior art keywords
- bath
- jan
- platinum
- electro
- acid
- 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
1,251,593. Electro-deposition of bright gold. ENGELHARD INDUSTRIES Ltd. Jan.6, 1970 [Jan. 10, 1969], No. 1717/69. Heading C7B. Bright gold plate, i.e. of at least 23 Kt, is electro-deposited from a bath containing an alkali metal gold cyanide and a chelate derived from a base or noble metal compound, e.g. of nickel cobalt, copper, cadmium, zinc, indium, tin, arsenic, antimony or silver, and heptonic acid or gluconic acid, the bath including a buffering agent such as acetic, citric, tartaric, lactic or kojic acids. The pH may be adjusted by addition of ammonia, and the bath may also contain potassium pyrophosphate or sulphamic acid. The anodes used may be of platinum, platinum-coated titanium or stainless steel.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB171769 | 1969-01-10 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1251593A true GB1251593A (en) | 1971-10-27 |
Family
ID=9726796
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1251593D Expired GB1251593A (en) | 1969-01-10 | 1969-01-10 |
Country Status (7)
| Country | Link |
|---|---|
| BE (1) | BE744272A (en) |
| CH (1) | CH525962A (en) |
| DK (1) | DK136624B (en) |
| ES (1) | ES375291A1 (en) |
| FR (1) | FR2028113A1 (en) |
| GB (1) | GB1251593A (en) |
| NL (1) | NL7000230A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS493839A (en) * | 1972-04-03 | 1974-01-14 | ||
| CN106637307A (en) * | 2017-01-04 | 2017-05-10 | 中国地质大学（武汉） | Additive for cyanide-free electroforming technology of gold |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2967135A (en) * | 1960-06-08 | 1961-01-03 | Barnet D Ostrow | Electroplating baths for hard bright gold deposits |
| FR1539226A (en) * | 1966-09-16 | 1968-09-13 | Process for producing deposits of gold or a gold-based alloy |
-
1969
- 1969-01-10 GB GB1251593D patent/GB1251593A/en not_active Expired
-
1970
- 1970-01-08 CH CH16770A patent/CH525962A/en not_active IP Right Cessation
- 1970-01-08 NL NL7000230A patent/NL7000230A/xx unknown
- 1970-01-09 DK DK11170A patent/DK136624B/en not_active IP Right Cessation
- 1970-01-09 BE BE744272D patent/BE744272A/en not_active IP Right Cessation
- 1970-01-09 FR FR7000708A patent/FR2028113A1/fr active Pending
- 1970-01-09 ES ES375291A patent/ES375291A1/en not_active Expired
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS493839A (en) * | 1972-04-03 | 1974-01-14 | ||
| JPS5536717B2 (en) * | 1972-04-03 | 1980-09-22 | ||
| CN106637307A (en) * | 2017-01-04 | 2017-05-10 | 中国地质大学（武汉） | Additive for cyanide-free electroforming technology of gold |
Also Published As
| Publication number | Publication date |
|---|---|
| BE744272A (en) | 1970-07-09 |
| DK136624B (en) | 1977-10-31 |
| NL7000230A (en) | 1970-07-14 |
| FR2028113A1 (en) | 1970-10-09 |
| ES375291A1 (en) | 1972-08-16 |
| CH525962A (en) | 1972-07-31 |
| DK136624C (en) | 1978-04-03 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PE20 | Patent expired after termination of 20 years |