ATE87T1 - PROCESS FOR THE ELECTROLYTIC COLORING OF ANODISED OXIDE COATINGS PRODUCED ON ALUMINUM. - Google Patents

PROCESS FOR THE ELECTROLYTIC COLORING OF ANODISED OXIDE COATINGS PRODUCED ON ALUMINUM.

Info

Publication number
ATE87T1
ATE87T1 AT79103288T AT79103288T ATE87T1 AT E87 T1 ATE87 T1 AT E87T1 AT 79103288 T AT79103288 T AT 79103288T AT 79103288 T AT79103288 T AT 79103288T AT E87 T1 ATE87 T1 AT E87T1
Authority
AT
Austria
Prior art keywords
aluminum
oxide coatings
coatings produced
electrolytic coloring
sulfuric acid
Prior art date
Application number
AT79103288T
Other languages
German (de)
Inventor
Erich Ruf
Original Assignee
Goldschmidt Ag Th
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=6055052&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=ATE87(T1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Goldschmidt Ag Th filed Critical Goldschmidt Ag Th
Application granted granted Critical
Publication of ATE87T1 publication Critical patent/ATE87T1/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
    • 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

Abstract

A two-step process for electrolytically coloring aluminum with metal salts is disclosed in which an oxide layer, produced by direct current in an acidic solution, is colored by means of an alternating current through an electrolyte containing a tin(II) salt. The electrolyte inventively contains 1 to 10 g/l iron(II) salts of sulfuric acid, a sulfuric acid with at most 8 carbon atoms or of sulfamic acid. The process prevents the formation of deposits in the electrolytes on standing. In addition, a considerable color-enhancing effect can be achieved.
AT79103288T 1978-11-18 1979-09-05 PROCESS FOR THE ELECTROLYTIC COLORING OF ANODISED OXIDE COATINGS PRODUCED ON ALUMINUM. ATE87T1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2850136A DE2850136B2 (en) 1978-11-18 1978-11-18 Process for the electrolytic coloring of anodic oxide layers produced on aluminum
EP79103288A EP0011097B1 (en) 1978-11-18 1979-09-05 Process for electrolytic colouring of anodic oxide layers produced on aluminium

Publications (1)

Publication Number Publication Date
ATE87T1 true ATE87T1 (en) 1981-07-15

Family

ID=6055052

Family Applications (1)

Application Number Title Priority Date Filing Date
AT79103288T ATE87T1 (en) 1978-11-18 1979-09-05 PROCESS FOR THE ELECTROLYTIC COLORING OF ANODISED OXIDE COATINGS PRODUCED ON ALUMINUM.

Country Status (6)

Country Link
US (1) US4401525A (en)
EP (1) EP0011097B1 (en)
AT (1) ATE87T1 (en)
BR (1) BR7906756A (en)
DE (1) DE2850136B2 (en)
DK (1) DK486579A (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3718849A1 (en) * 1987-06-05 1988-12-15 Henkel Kgaa ELECTROLYTIC COLORING OF ANODISED ALUMINUM
DE3824403A1 (en) * 1988-07-19 1990-01-25 Henkel Kgaa METHOD FOR ELECTROLYTIC METAL SALT COLORING OF ANODISED ALUMINUM SURFACES
GB9825043D0 (en) * 1998-11-16 1999-01-13 Agfa Gevaert Ltd Production of support for lithographic printing plate
EP3553208A1 (en) * 2018-04-09 2019-10-16 DURA Operating, LLC Method of manufacturing an aluminium component having a coloured surface

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5423662B2 (en) * 1975-03-05 1979-08-15 Yoshida Kogyo Kk Aruminiumu mataha aruminiumugokinno goorudoshokuhenodenkaichakushokuho
JPS5423663B2 (en) * 1975-03-06 1979-08-15
JPS5296940A (en) * 1976-02-10 1977-08-15 Mitsui Keikinzoku Kako Electrolytic pigmentation process for aluminum or its alloy
JPS5318438A (en) * 1976-08-04 1978-02-20 Mitsui Keikinzoku Kako Process for forming electrolytic pigmentation coatings on aluminum and aluminum alloy
FR2384037A1 (en) * 1977-03-17 1978-10-13 Nice Anodisation Sa Electrolytic colouring of anodised aluminium and its alloys - using alternating current and bath contg. stannous sulphate

Also Published As

Publication number Publication date
DE2850136A1 (en) 1980-05-22
US4401525A (en) 1983-08-30
DE2850136B2 (en) 1981-01-22
EP0011097A3 (en) 1980-06-11
EP0011097B1 (en) 1981-06-17
EP0011097A2 (en) 1980-05-28
DK486579A (en) 1980-05-19
BR7906756A (en) 1980-06-03

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Legal Events

Date Code Title Description
RVE Rejection due to an opposition filed with the epo