DE3751126D1 - Acidic electrolyte containing tin (II). - Google Patents

Acidic electrolyte containing tin (II).

Info

Publication number
DE3751126D1
DE3751126D1 DE3751126T DE3751126T DE3751126D1 DE 3751126 D1 DE3751126 D1 DE 3751126D1 DE 3751126 T DE3751126 T DE 3751126T DE 3751126 T DE3751126 T DE 3751126T DE 3751126 D1 DE3751126 D1 DE 3751126D1
Authority
DE
Germany
Prior art keywords
quality
acid
lesser degree
electrolyte
electrolyte containing
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 - Lifetime
Application number
DE3751126T
Other languages
German (de)
Inventor
Jean-Francois Paulet
Bruno Boetsch
Fritz Schneeberger
Guenther Tscheulin
Hans Bohler
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.)
Clariant Finance BVI Ltd
Original Assignee
Sandoz AG
Alusuisse Lonza Services Ltd
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=4205369&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=DE3751126(D1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Sandoz AG, Alusuisse Lonza Services Ltd filed Critical Sandoz AG
Application granted granted Critical
Publication of DE3751126D1 publication Critical patent/DE3751126D1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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
    • C25D3/30—Electroplating: Baths therefor from solutions of tin
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D11/00—Electrolytic coating by surface reaction, i.e. forming conversion layers
    • C25D11/02—Anodisation
    • C25D11/04—Anodisation of aluminium or alloys based thereon
    • C25D11/18—After-treatment, e.g. pore-sealing
    • C25D11/20—Electrolytic after-treatment
    • C25D11/22—Electrolytic after-treatment for colouring layers
    • 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
    • C25D3/30—Electroplating: Baths therefor from solutions of tin
    • C25D3/32—Electroplating: Baths therefor from solutions of tin characterised by the organic bath constituents used

Abstract

In acid Sn(II)-containing electrolytes for staining anodically produced oxide layers on aluminium or aluminium alloys or for electroplating, the Sn(II) becomes oxidised. Adding substances to the electrolyte, so called stabilisers, may prevent the oxidation to a greater or lesser degree, i.e. Sn(II) can be stabilised to a greater or lesser degree. The effectiveness of the stabiliser furthermore governs the quality of the deposits or the coloration of the anodised layer. The quality of the surface treatment is known to deteriorate in the presence of Sn(IV) in substantial amounts alongside Sn(II) as a consequence of inadequate stabilisation of the Sn(II). An acid Sn(II)-containing electrolyte with a soluble diphenylamine or substituted diphenylamine derivative added stabilises the Sn(II) and yields faultless colorations.
DE3751126T 1986-03-25 1987-03-19 Acidic electrolyte containing tin (II). Expired - Lifetime DE3751126D1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH122386 1986-03-25

Publications (1)

Publication Number Publication Date
DE3751126D1 true DE3751126D1 (en) 1995-04-13

Family

ID=4205369

Family Applications (1)

Application Number Title Priority Date Filing Date
DE3751126T Expired - Lifetime DE3751126D1 (en) 1986-03-25 1987-03-19 Acidic electrolyte containing tin (II).

Country Status (8)

Country Link
EP (1) EP0241415B1 (en)
JP (1) JPH07107198B2 (en)
KR (1) KR940010459B1 (en)
AT (1) ATE119587T1 (en)
AU (1) AU603790B2 (en)
CA (1) CA1336129C (en)
DE (1) DE3751126D1 (en)
ES (1) ES2069532T3 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH059765A (en) * 1991-07-04 1993-01-19 Nippon Parkerizing Co Ltd Acidic cleaning liquid for aluminum and cleaning method
JP7009679B2 (en) * 2015-07-29 2022-01-26 石原ケミカル株式会社 Electric tin and electric tin alloy plating bath, method of forming electrodeposits using the plating bath

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1089479A (en) * 1965-11-09 1967-11-01 Monsanto Chemicals Improvements relating to electrodeposition of tin
GB1339133A (en) * 1970-06-19 1973-11-28 Ciba Geigy Uk Ltd Tin plating additives and baths
US4073701A (en) * 1976-10-15 1978-02-14 Bethlehem Steel Corporation Acid electrotinning bath

Also Published As

Publication number Publication date
AU7054487A (en) 1987-10-01
JPH07107198B2 (en) 1995-11-15
KR870009055A (en) 1987-10-23
EP0241415A1 (en) 1987-10-14
EP0241415B1 (en) 1995-03-08
ATE119587T1 (en) 1995-03-15
AU603790B2 (en) 1990-11-29
JPS62270791A (en) 1987-11-25
CA1336129C (en) 1995-07-04
ES2069532T3 (en) 1995-05-16
KR940010459B1 (en) 1994-10-22

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8327 Change in the person/name/address of the patent owner

Owner name: CLARIANT FINANCE (BVI) LTD., TORTOLA, VG ALUSUISSE