GB487605A - Process of colouring artificially-produced oxide films on aluminium and its alloys - Google Patents

Process of colouring artificially-produced oxide films on aluminium and its alloys

Info

Publication number
GB487605A
GB487605A GB3520336A GB3520336A GB487605A GB 487605 A GB487605 A GB 487605A GB 3520336 A GB3520336 A GB 3520336A GB 3520336 A GB3520336 A GB 3520336A GB 487605 A GB487605 A GB 487605A
Authority
GB
United Kingdom
Prior art keywords
parts
acetic acid
bath
aluminium
dissolved
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
GB3520336A
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.)
Imperial Chemical Industries Ltd
Original Assignee
Imperial Chemical Industries 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 Imperial Chemical Industries Ltd filed Critical Imperial Chemical Industries Ltd
Priority to GB3520336A priority Critical patent/GB487605A/en
Publication of GB487605A publication Critical patent/GB487605A/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
    • C25D11/24—Chemical after-treatment
    • C25D11/243—Chemical after-treatment using organic dyestuffs

Landscapes

  • Chemical & Material Sciences (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Cookers (AREA)
  • Printing Methods (AREA)

Abstract

487,605. Colouring aluminium; printing processes. HILL, F., RADLEY, J. A., and IMPERIAL CHEMICAL INDUSTRIES, Ltd. Dec. 22, 1936, No. 35203. [Class 93] [Also in Group XVI] Oxide films produced artificially on aluminium or its alloys, for instance those containing 5 per cent or less of silicon, copper, magnesium, or zinc, are coloured by treatment with a dyebath containing a mono- or disazo or anthraquinone dyestuff containing a hydroxy-alkyl sulphuric ester group attached to an aromatic nucleus through an N or O atom and devoid of nuclear sulphonic or carboxylic groups. The dyebath may be a neutral one containing Glauber's salt, or it may be an acid bath containing e.g. acetic acid. The colour may be applied by brushing, spraying, or printing. (1) To produce a deep scarlet, 1 part of pnitroaniline # N-ethyl-N-#-hydroxyethylaniline sulphuric ester is dissolved in 1500 parts of water and 1À5 parts of acetic acid are added. Anodized aluminium is immersed therein, and the temperature is raised to the boil and maintained there for 20 minutes. (2) A dye-bath for producing a reddish-violet comprises 1 part of 2 : 4-dinitroaniline # N - ethyl - N - # - hydroxyethylaniline sulphuric ester dissolved in 3000 parts of water containing 3 parts of acetic acid. (3) A dye-bath for producing a yellow comprises 1 part of p-aminophenyl-#-hydroxyethyl ether sulphuric ester # p-cresol dissolved in 1500 parts of water containing 1À5 parts of acetic acid. (4) A dye-bath for producing a blue comprises (1) part of the sodium salt of the sulphuric ester of 1 - methylamino - 4 - # - hydroxyethylamino anthraquinone dissolved in 1500 parts of water containing 1À5 parts of acetic acid. Specifications 237,739, [Class 15 (ii)], 441,089, [Group IV], and 474,609, are referred to.
GB3520336A 1936-12-22 1936-12-22 Process of colouring artificially-produced oxide films on aluminium and its alloys Expired GB487605A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3520336A GB487605A (en) 1936-12-22 1936-12-22 Process of colouring artificially-produced oxide films on aluminium and its alloys

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3520336A GB487605A (en) 1936-12-22 1936-12-22 Process of colouring artificially-produced oxide films on aluminium and its alloys

Publications (1)

Publication Number Publication Date
GB487605A true GB487605A (en) 1938-06-22

Family

ID=10375040

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3520336A Expired GB487605A (en) 1936-12-22 1936-12-22 Process of colouring artificially-produced oxide films on aluminium and its alloys

Country Status (1)

Country Link
GB (1) GB487605A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3133691A1 (en) * 1980-09-08 1982-06-16 Schenk & Co, 6300 Zug METHOD FOR COLORING OXIDE LAYERS OF ALUMINUM OR ALUMINUM ALLOYS WITH ORGANIC COMPOUNDS

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3133691A1 (en) * 1980-09-08 1982-06-16 Schenk & Co, 6300 Zug METHOD FOR COLORING OXIDE LAYERS OF ALUMINUM OR ALUMINUM ALLOYS WITH ORGANIC COMPOUNDS

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