ES368263A1 - Bright silver electroplating - Google Patents
Bright silver electroplatingInfo
- Publication number
- ES368263A1 ES368263A1 ES368263A ES368263A ES368263A1 ES 368263 A1 ES368263 A1 ES 368263A1 ES 368263 A ES368263 A ES 368263A ES 368263 A ES368263 A ES 368263A ES 368263 A1 ES368263 A1 ES 368263A1
- Authority
- ES
- Spain
- Prior art keywords
- group
- methyl
- electrolyte
- compounds
- agents
- 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
- C25D3/46—Electroplating: Baths therefor from solutions of silver
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Electroplating And Plating Baths Therefor (AREA)
- Electrochromic Elements, Electrophoresis, Or Variable Reflection Or Absorption Elements (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Adhesives Or Adhesive Processes (AREA)
- Chemically Coating (AREA)
Abstract
Glossy Ag is electro-deposited from a cyanidic Ag electrolyte comprising at least one S-containing compound of the formula R1-CX-NH-CS-SH or R1-CX-NR11-NH-CS-SH, and/or salt thereof with an inorganic or organic base (e.g. as Ag, Na, K, NH 4 or NH(C 2 H 5 ) 3 salt), in which R11 is H or a C 1-4 alkyl (preferably methyl) group, X is S or O or imino group, and R1 is an aliphatic hydrocarbon group (preferably containing C 1-5 ) or a C 1-3 alkoxy (preferably methoxy), a C 1-4 mono alkylamino (preferably methylamino) or phenylamino group or a group of the formula: in which R111 is a halogen, a C 1-5 alkyl, alkoxy, alkylamino or acylamino group. When X is O or imino group, R1 may be an -NH 2 group. Many examples of such glossing agents are specified such as hydrazine-N-(methyl- or phenyl-thio) carboxylic acid amide (-N-methyl)-N1 -dithiocarboxylic acid, or hydrazine-N-(methyl or ethyl) guanyl-N1 -dithiocarboxylic acid. The electrolyte may also contain one or more other glossing agents such as thicarbonates (e.g. Na or ethylenetrithiocarbonate), xanthatis (e.g. of K), thiocarbamates (e.g. of ammonium), organic Se compounds (e.g. a piaselenole) or inorganic Se compounds (e.g. K selenocyanate or sodium selenite) or Group V metal (e.g. Sb) compounds wetting agents and/or colloids may be added. The C.D. may range from 0À05 to 3 amp/dm2 . The electrolyte may contain 20-50 g/l Ag as AgCN, K or Na dicyanoargentate, 50-200 g/l free KCN (or NaCN) and 0-100 g/l K 2 CO 3 . 2, 5 dimercaptothiodiazole-(1, 3, 4) and thiosemicarbazide-dithiocarboxylic acid are specified as comparative glossing agents.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19681771699 DE1771699C3 (en) | 1968-06-27 | Cyanide bath for the galvanic deposition of shiny silver coatings |
Publications (1)
Publication Number | Publication Date |
---|---|
ES368263A1 true ES368263A1 (en) | 1971-05-01 |
Family
ID=5700952
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ES368263A Expired ES368263A1 (en) | 1968-06-27 | 1969-06-11 | Bright silver electroplating |
Country Status (11)
Country | Link |
---|---|
US (1) | US3580821A (en) |
JP (1) | JPS495818B1 (en) |
AT (1) | AT286055B (en) |
BE (1) | BE735288A (en) |
CH (1) | CH525285A (en) |
ES (1) | ES368263A1 (en) |
FR (1) | FR2016105A1 (en) |
GB (1) | GB1272839A (en) |
NL (1) | NL6909961A (en) |
NO (1) | NO122048B (en) |
SE (1) | SE354676B (en) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4155817A (en) * | 1978-08-11 | 1979-05-22 | American Chemical And Refining Company, Inc. | Low free cyanide high purity silver electroplating bath and method |
US4399006A (en) * | 1978-08-29 | 1983-08-16 | Learonal, Inc. | Silver plating |
FR2825721B1 (en) * | 2001-06-12 | 2003-10-03 | Engelhard Clal Sas | MIXTURE FOR USE AS A BRILLIANT IN A BATH OF ELECTROLYTIC DEPOSIT OF SILVER, GOLD OR ONE OF THEIR ALLOYS |
JP4806808B2 (en) * | 2005-07-05 | 2011-11-02 | Dowaメタルテック株式会社 | Composite plating material and method for producing the same |
JP6230778B2 (en) * | 2012-05-31 | 2017-11-15 | 日亜化学工業株式会社 | Electrolytic silver plating solution for optical semiconductor devices |
CN103320823B (en) * | 2013-06-18 | 2016-04-20 | 中山品高电子材料有限公司 | A kind of LED lead frame super brightness local electric plating solution and electroplating technology thereof |
JP6395560B2 (en) * | 2013-11-08 | 2018-09-26 | Dowaメタルテック株式会社 | Silver plating material and method for producing the same |
-
1969
- 1969-06-11 ES ES368263A patent/ES368263A1/en not_active Expired
- 1969-06-12 CH CH899169A patent/CH525285A/en not_active IP Right Cessation
- 1969-06-17 GB GB30590/69A patent/GB1272839A/en not_active Expired
- 1969-06-23 JP JP44049611A patent/JPS495818B1/ja active Pending
- 1969-06-24 US US838040A patent/US3580821A/en not_active Expired - Lifetime
- 1969-06-24 SE SE08951/69A patent/SE354676B/xx unknown
- 1969-06-24 AT AT599669A patent/AT286055B/en not_active IP Right Cessation
- 1969-06-26 FR FR6921468A patent/FR2016105A1/fr not_active Withdrawn
- 1969-06-26 NO NO2658/69A patent/NO122048B/no unknown
- 1969-06-27 NL NL6909961A patent/NL6909961A/xx unknown
- 1969-06-27 BE BE735288D patent/BE735288A/xx not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
SE354676B (en) | 1973-03-19 |
DE1771699A1 (en) | 1972-01-13 |
US3580821A (en) | 1971-05-25 |
BE735288A (en) | 1969-12-29 |
NL6909961A (en) | 1969-12-30 |
FR2016105A1 (en) | 1970-05-08 |
DE1771699B2 (en) | 1976-10-07 |
CH525285A (en) | 1972-07-15 |
NO122048B (en) | 1971-05-10 |
GB1272839A (en) | 1972-05-03 |
JPS495818B1 (en) | 1974-02-09 |
AT286055B (en) | 1970-11-25 |
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