ES368263A1 - Bright silver electroplating - Google Patents

Bright silver electroplating

Info

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
Application number
ES368263A
Other languages
Spanish (es)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Bayer Pharma AG
Original Assignee
Schering AG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority claimed from DE19681771699 external-priority patent/DE1771699C3/en
Application filed by Schering AG filed Critical Schering AG
Publication of ES368263A1 publication Critical patent/ES368263A1/en
Expired legal-status Critical Current

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C25ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25DPROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D3/00Electroplating: Baths therefor
    • C25D3/02Electroplating: Baths therefor from solutions
    • C25D3/46Electroplating: 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.
ES368263A 1968-06-27 1969-06-11 Bright silver electroplating Expired ES368263A1 (en)

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)

* Cited by examiner, † Cited by third party
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

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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