GB1439120A - Process of electrolytically colouring an anodically oxidized coating on aluminium - Google Patents

Process of electrolytically colouring an anodically oxidized coating on aluminium

Info

Publication number
GB1439120A
GB1439120A GB4512474A GB4512474A GB1439120A GB 1439120 A GB1439120 A GB 1439120A GB 4512474 A GB4512474 A GB 4512474A GB 4512474 A GB4512474 A GB 4512474A GB 1439120 A GB1439120 A GB 1439120A
Authority
GB
United Kingdom
Prior art keywords
electrolytically
colouring
aluminium
oct
contain
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
Application number
GB4512474A
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.)
Sumitomo Chemical Co Ltd
Original Assignee
Sumitomo Chemical Co 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 Sumitomo Chemical Co Ltd filed Critical Sumitomo Chemical Co Ltd
Publication of GB1439120A publication Critical patent/GB1439120A/en
Expired 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)
  • Electroplating And Plating Baths Therefor (AREA)
  • Electrochemical Coating By Surface Reaction (AREA)
  • Coloring (AREA)
  • Electroplating Methods And Accessories (AREA)

Abstract

1439120 Electrolytically colouring anodized aluminium SUMITOMO CHEMICAL CO Ltd 17 Oct 1974 [20 Oct 1973] 45124/74 Heading C7B Anodized Al or Al alloy having an anodic oxide coating at least 6Á in thickness is electrolytically coloured by cathodic treatment in an aqueous bath containing a Ni salt and controlled at pH 2À0-5À5. The initial anodizing may be with H 2 SO 4 and/or an aromatic sulphonic acid at 20-30‹C, with a c.d. of 1-5 A/dm<SP>2</SP> using D.C. with superimposed A.C. The obtained coating, unsealed, may be coloured at 10-40‹C at a c.d. of 0À05-3À0 A/dm<SP>2</SP> for 2 sec- 3 min. The colouring bath may contain H 2 SO 4 or H 3 BO 3 to improve conductivity and may contain H 2 SO 4 or Ni (OH) 2 or be treated with an anion exchange resin to control the pH; The Al may be initially cleaned successively in NaOH and HNO 3 . Reference has been directed by the Comptroller to Specification 1331365
GB4512474A 1973-10-20 1974-10-17 Process of electrolytically colouring an anodically oxidized coating on aluminium Expired GB1439120A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11804773A JPS578196B2 (en) 1973-10-20 1973-10-20

Publications (1)

Publication Number Publication Date
GB1439120A true GB1439120A (en) 1976-06-09

Family

ID=14726700

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4512474A Expired GB1439120A (en) 1973-10-20 1974-10-17 Process of electrolytically colouring an anodically oxidized coating on aluminium

Country Status (8)

Country Link
US (1) US3929612A (en)
JP (1) JPS578196B2 (en)
CH (1) CH587360A5 (en)
DE (1) DE2449926A1 (en)
FR (1) FR2248340B1 (en)
GB (1) GB1439120A (en)
IT (1) IT1023079B (en)
NO (1) NO743748L (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5129328A (en) * 1974-08-29 1976-03-12 Sumitomo Chemical Co Aruminiumu mataha aruminiumugokin no hyomenniseiseisaseta yokyokusankahimaku no denkaichakushokuhoho
DE2732668C2 (en) * 1977-07-20 1979-08-23 Langbein-Pfanhauser Werke Ag, 4040 Neuss Aluminum sheet baking pan and process for its manufacture
US4431489A (en) * 1983-03-31 1984-02-14 Kaiser Aluminum & Chemical Corporation Coloring process for anodized aluminum products
IT1234708B (en) * 1989-02-17 1992-05-26 Giuseppe Garuti SYSTEM FOR FIXING THE ANODIZED ALUMINUM

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3616297A (en) * 1968-09-23 1971-10-26 Alcan Res & Dev Method of producing colored coatings of aluminum
US3634208A (en) * 1968-09-26 1972-01-11 Aiden Kk Coloring method of aluminum anodic oxide coating film
JPS4948824B1 (en) * 1970-03-18 1974-12-24
FR2115061A1 (en) * 1970-11-26 1972-07-07 Cegedur Gp ELECTROLYSIS BATH AND ELECTROLYTIC ANODIZED ALUMINUM COLORING PROCESS
FR2152399B2 (en) * 1971-06-25 1974-03-29 Cegedur
US3798137A (en) * 1972-03-22 1974-03-19 Aluminum Co Of America Direct current pigmenting of anodized aluminum
JPS5231927B2 (en) * 1972-09-19 1977-08-18

Also Published As

Publication number Publication date
FR2248340B1 (en) 1979-02-16
JPS5067241A (en) 1975-06-05
DE2449926A1 (en) 1975-04-24
FR2248340A1 (en) 1975-05-16
IT1023079B (en) 1978-05-10
CH587360A5 (en) 1977-04-29
US3929612A (en) 1975-12-30
JPS578196B2 (en) 1982-02-15
NO743748L (en) 1975-05-20

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PLE Entries relating assignments, transmissions, licences in the register of patents
PCNP Patent ceased through non-payment of renewal fee