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

Info

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Withdrawn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Withdrawn legal-status Critical Current

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

Landscapes

  • 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
EP0936288A2 (en) 1999-08-18
AU1002799A (en) 1999-07-29
JPH11256394A (en) 1999-09-21

Similar Documents

Publication Publication Date Title
AU3122695A (en) Color anodized aluminium, and electrolytic production process
AU573065B2 (en) Generating colorless sealing layers on anodized aluminum
HUP9702434A2 (en) Process for making decorated, extruded, profiled elements
MXPA03008665A (en) Method of plating and pretreating aluminium workpieces.
EP0666239A4 (en) Composite metal oxide powder and process for producing the same.
AU751726C (en) Iron oxide red pigments, process for the production of iron oxide red pigments and use thereof
EP0666238A4 (en) Metal oxide powder and process for producing the same.
BR0006920A (en) Magnesium object or its alloys, process for forming a conversion layer on a magnesium object or its alloys, and using a solution for the preparation of an object
EP0638615A3 (en) Process for the production of copper phthalocyanine pigment and its use.
AU7690394A (en) Process for producing water-dispersible aluminium hydrates with a boehmitic structure and the use thereof
EP0936288A3 (en) A process for producing colour variations on electrolytically pigmented anodized aluminium
AU3824289A (en) Electrolytic process for colouring anodized aluminium surfaces with metal salts
AU6110390A (en) Improved electrolytic method for coloring anodized aluminum
BR0012474A (en) Noble one-stage metal-aluminum coatings
EP0616353A3 (en) Cathode assembly and method of manufacturing the same.
EP1229153A3 (en) Method for manufacturing front sheet and microwave oven having the same
WO2001051681A3 (en) Lustrous metal surfaces
AU1734488A (en) Electrolytic coloring of anodized aluminium
AU5928690A (en) Process for producing corrosion-resistant coatings on metal surfaces
EG21145A (en) Method for applying decoration to a cooking utensil
HU913562D0 (en) Direct colouring anodic oxidation process for use on aluminium or its alloys for producing bluish-grey, greyish-blue, clear blue or natural grey oxidation cover on the metallic surfaces
HU913425D0 (en) Direct colouring anodic oxidating process for producing green, greenish coloured or bluish-green oxide coatings on aluminium or its alloys
EP0976848A4 (en) Metal composition containing metal acetilide, blank having metallic coating formed therewith, and method for forming the metallic coating
JPS57149493A (en) Method of patterned surface treatment of aluminum or aluminum alloy
ES8701859A1 (en) Grey colouration of anodic layers on aluminium (alloys)

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): CH DE ES FR GB IT LI

AX Request for extension of the european patent

Free format text: AL;LT;LV;MK;RO;SI

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

AX Request for extension of the european patent

Free format text: AL;LT;LV;MK;RO;SI

17P Request for examination filed

Effective date: 20000928

AKX Designation fees paid

Free format text: CH DE ES FR GB IT LI

17Q First examination report despatched

Effective date: 20010528

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 20011009