SG52702A1 - Protection of lead-containing anodes during chromium electroplating - Google Patents

Protection of lead-containing anodes during chromium electroplating

Info

Publication number
SG52702A1
SG52702A1 SG1996008067A SG1996008067A SG52702A1 SG 52702 A1 SG52702 A1 SG 52702A1 SG 1996008067 A SG1996008067 A SG 1996008067A SG 1996008067 A SG1996008067 A SG 1996008067A SG 52702 A1 SG52702 A1 SG 52702A1
Authority
SG
Singapore
Prior art keywords
lead
acid
protection
chromium
chromium electroplating
Prior art date
Application number
SG1996008067A
Inventor
Kenneth Russ Newby
Original Assignee
Atotech Usa Inc
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=23714188&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=SG52702(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Atotech Usa Inc filed Critical Atotech Usa Inc
Publication of SG52702A1 publication Critical patent/SG52702A1/en

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
    • C25D21/00—Processes for servicing or operating cells for electrolytic coating
    • C25D21/12—Process control or regulation
    • C25D21/14—Controlled addition of electrolyte components
    • 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
    • C25D3/04—Electroplating: Baths therefor from solutions of chromium

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Automation & Control Theory (AREA)
  • Electroplating And Plating Baths Therefor (AREA)
  • Battery Electrode And Active Subsutance (AREA)
  • Preventing Corrosion Or Incrustation Of Metals (AREA)
  • Paints Or Removers (AREA)

Abstract

The present invention provides a process for electroplating chromium using lead anodes while achieving the advantages of using methanesulfonic acid without suffering the excessive anode-corrosion characteristics associated with that acid. Accordingly, chromium is electrodeposited from a bath containing chromic acid, sulfate and an alkylpolysulfonic acid containing from one to about three carbon atoms. The invention also provides a plating process for chromium electrodeposition, a plating bath for use in the inventive process, and a replenishment composition for existing plating baths.
SG1996008067A 1989-11-06 1990-11-06 Protection of lead-containing anodes during chromium electroplating SG52702A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US43196389A 1989-11-06 1989-11-06

Publications (1)

Publication Number Publication Date
SG52702A1 true SG52702A1 (en) 1998-09-28

Family

ID=23714188

Family Applications (1)

Application Number Title Priority Date Filing Date
SG1996008067A SG52702A1 (en) 1989-11-06 1990-11-06 Protection of lead-containing anodes during chromium electroplating

Country Status (9)

Country Link
EP (1) EP0452471B1 (en)
JP (1) JPH04502786A (en)
AT (1) ATE150100T1 (en)
AU (1) AU638512B2 (en)
BR (1) BR9006995A (en)
CA (1) CA2054201C (en)
DE (1) DE69030176T2 (en)
SG (1) SG52702A1 (en)
WO (1) WO1991006693A1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5192515A (en) * 1990-09-20 1993-03-09 Molecular Technology Corporation Reduction of nitrogen oxide and carbon monoxide in effluent gases
DE102006042076A1 (en) * 2006-09-05 2008-03-20 Goldschmidt Tib Gmbh A new additive for chromium electrolytes
PL2792770T3 (en) * 2013-04-17 2015-11-30 Atotech Deutschland Gmbh Functional chromium layer with improved corrosion resistance

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3402554A1 (en) * 1984-01-26 1985-08-08 LPW-Chemie GmbH, 4040 Neuss DEPOSITION OF HARD CHROME ON A METAL ALLOY FROM AN AQUEOUS ELECTROLYTE CONTAINING CHROME ACID AND SULFURIC ACID
US4588481A (en) * 1985-03-26 1986-05-13 M&T Chemicals Inc. Chromium plating bath for producing non-iridescent, adherent, bright chromium deposits at high efficiencies and substantially free of cathodic low current density etching
US4786378A (en) * 1987-09-01 1988-11-22 M&T Chemicals Inc. Chromium electroplating baths having reduced weight loss of lead and lead alloy anodes
US4810337A (en) * 1988-04-12 1989-03-07 M&T Chemicals Inc. Method of treating a chromium electroplating bath which contains an alkyl sulfonic acid to prevent heavy lead dioxide scale build-up on lead or lead alloy anodes used therein

Also Published As

Publication number Publication date
DE69030176D1 (en) 1997-04-17
EP0452471A1 (en) 1991-10-23
BR9006995A (en) 1991-10-22
WO1991006693A1 (en) 1991-05-16
EP0452471A4 (en) 1993-11-18
DE69030176T2 (en) 1997-07-10
CA2054201A1 (en) 1991-05-07
ATE150100T1 (en) 1997-03-15
CA2054201C (en) 2000-04-11
AU638512B2 (en) 1993-07-01
JPH04502786A (en) 1992-05-21
AU6756990A (en) 1991-05-31
EP0452471B1 (en) 1997-03-12

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