EP0936288A3 - A process for producing colour variations on electrolytically pigmented anodized aluminium - Google Patents

A process for producing colour variations on electrolytically pigmented anodized aluminium Download PDF

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Publication number
EP0936288A3
EP0936288A3 EP98811275A EP98811275A EP0936288A3 EP 0936288 A3 EP0936288 A3 EP 0936288A3 EP 98811275 A EP98811275 A EP 98811275A EP 98811275 A EP98811275 A EP 98811275A EP 0936288 A3 EP0936288 A3 EP 0936288A3
Authority
EP
European Patent Office
Prior art keywords
electrolytically
pigmented
anodized aluminium
colour variations
producing colour
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.)
Withdrawn
Application number
EP98811275A
Other languages
German (de)
French (fr)
Other versions
EP0936288A2 (en
Inventor
Mark Jozefowicz
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
Clariant Finance BVI 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
Application filed by Clariant Finance BVI Ltd filed Critical Clariant Finance BVI Ltd
Publication of EP0936288A2 publication Critical patent/EP0936288A2/en
Publication of EP0936288A3 publication Critical patent/EP0936288A3/en
Withdrawn legal-status Critical Current

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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

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Other Surface Treatments For Metallic Materials (AREA)
  • Pigments, Carbon Blacks, Or Wood Stains (AREA)

Abstract

A process for producing a coloured article of anodized aluminium or aluminium alloy, wherein an anodized aluminium or aluminium alloy article (A), which is electrolytically pigmented with a metallic pigment (B) within the anodically produced oxide layer, is treated with a solution (C) comprising metal cations of a species other than that of said metallic pigment (B), until a perceivable colour conversion has taken place, and sealed.
EP98811275A 1998-01-07 1998-12-31 A process for producing colour variations on electrolytically pigmented anodized aluminium Withdrawn EP0936288A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US403598A 1998-01-07 1998-01-07
US4035 1998-01-07

Publications (2)

Publication Number Publication Date
EP0936288A2 EP0936288A2 (en) 1999-08-18
EP0936288A3 true EP0936288A3 (en) 2000-06-07

Family

ID=21708809

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98811275A Withdrawn EP0936288A3 (en) 1998-01-07 1998-12-31 A process for producing colour variations on electrolytically pigmented anodized aluminium

Country Status (4)

Country Link
EP (1) EP0936288A3 (en)
JP (1) JPH11256394A (en)
AU (1) AU1002799A (en)
CA (1) CA2258370A1 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003160898A (en) 2001-09-17 2003-06-06 Fujitsu Ltd Method for coloring magnesium material and housing made from magnesium material colored with the same
DE102005051755A1 (en) * 2005-10-27 2007-05-10 Clariant International Limited Process for improving the corrosion resistance and light fastness of colored aluminum oxide layers
US20100215926A1 (en) * 2009-02-25 2010-08-26 Askin Albert L Aluminum alloy substrates having a multi-color effect and methods for producing the same
JP6474267B2 (en) * 2015-02-06 2019-02-27 国立大学法人豊橋技術科学大学 Porous structure manufacturing method and porous structure manufacturing apparatus
DE102017104654A1 (en) 2017-03-06 2018-09-06 Alumet B.V. Light-resistant combination dyeing of anodized aluminum surfaces

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3769180A (en) * 1971-12-29 1973-10-30 O Gedde Process for electrolytically coloring previously anodized aluminum using alternating current
US4251330A (en) * 1978-01-17 1981-02-17 Alcan Research And Development Limited Electrolytic coloring of anodized aluminium by means of optical interference effects
GB2108153A (en) * 1981-10-21 1983-05-11 Nagano Prefecture Method of chemically forming and coloring anodized coatings
US5167793A (en) * 1991-05-07 1992-12-01 Alcan International Limited Process for producing anodic films exhibiting colored patterns and structures incorporating such films
US5587063A (en) * 1992-12-24 1996-12-24 Henkel Kommanditgesellschaft Auf Aktien Method for electrolytic coloring of aluminum surfaces using alternating current

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3769180A (en) * 1971-12-29 1973-10-30 O Gedde Process for electrolytically coloring previously anodized aluminum using alternating current
US4251330A (en) * 1978-01-17 1981-02-17 Alcan Research And Development Limited Electrolytic coloring of anodized aluminium by means of optical interference effects
GB2108153A (en) * 1981-10-21 1983-05-11 Nagano Prefecture Method of chemically forming and coloring anodized coatings
US5167793A (en) * 1991-05-07 1992-12-01 Alcan International Limited Process for producing anodic films exhibiting colored patterns and structures incorporating such films
US5587063A (en) * 1992-12-24 1996-12-24 Henkel Kommanditgesellschaft Auf Aktien Method for electrolytic coloring of aluminum surfaces using alternating current

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
S. WERNICK, R. PINNER, P.G. SHEASBY: "The surface treatment and finishing of aluminium and its alloys", 1987, FINISHING PUBLICATIONS LTD., TEDDINGOTON, MIDDLESEX, ENGLAND, XP002134865, 155770 *

Also Published As

Publication number Publication date
CA2258370A1 (en) 1999-07-07
AU1002799A (en) 1999-07-29
JPH11256394A (en) 1999-09-21
EP0936288A2 (en) 1999-08-18

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