GB523837A - Process of colouring aluminium or its alloys - Google Patents

Process of colouring aluminium or its alloys

Info

Publication number
GB523837A
GB523837A GB1419/39A GB141939A GB523837A GB 523837 A GB523837 A GB 523837A GB 1419/39 A GB1419/39 A GB 1419/39A GB 141939 A GB141939 A GB 141939A GB 523837 A GB523837 A GB 523837A
Authority
GB
United Kingdom
Prior art keywords
solution
produced
product
action
aqueous solution
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
GB1419/39A
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.)
BASF Schweiz AG
Original Assignee
Gesellschaft fuer Chemische Industrie in Basel CIBA
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 Gesellschaft fuer Chemische Industrie in Basel CIBA filed Critical Gesellschaft fuer Chemische Industrie in Basel CIBA
Publication of GB523837A publication Critical patent/GB523837A/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)
  • Coloring (AREA)

Abstract

523,837. Ornamenting; dyes. SOC. OF CHEMICAL INDUSTRY IN BASLE. Jan. 16, 1939, No. 1419. Convention date, Jan. 15, 1938. [Class 93] [Also in Group IV] Aluminium or alloys thereof provided with an oxide coating by electrolysis or by purely chemical action are coloured by means of a water-soluble ester-like or amide-like dyestuff derivative obtained by the process described in Specifications 480,358 or 505,504, [both in Group IV]. The article may be immersed in a solution of the dyestuff, a solution may be applied by painting or spraying, or a paste may be applied, by printing. The colour may be produced in two stages comprising dyeing followed. by regeneration of the dyestuff by saponification or hydrolysis; also, dyeing may take place simultaneously with the production of the oxide coating The following examples are described:-(1) A bluish-grey aluminium sheet is produced by suspending an oxide-coated sheet in an aqueous solution of the product of the action of metasulphobenzoyl chloride on the azo-dye 2-methyl- 4-nitraniline 2:3-hydroxynaphthoic acid otoluidide and subsequently in a mixture of common salt solution, water and ammonia solution. (2) A yellow sheet is produced by using an aqueous solution of the product of the reaction of either meta-sulphobenzoylchloride or 4-chloromethyl-1-benzoyl chloride with pyridine on the tertiary condensation product from cyanuric chloride, 2-aminoanthraquinone and aniline. (3) A brown colour is produced by using an aqueous solution of the product of the action of 3 :5-disulphobenzoylchloride on the diazo dye 2- methoxy-aniline 2:5-dimethyl-1-aminobenzene 3-methyl-4-chlorophenol. (4) A Bordeaux colour is produced by using an aqueous solution of the product of the action of disulphobenzoylchloride on 1:5-dioxy-4:8-di-para-methoxybenzoylaminoanthraquinone. (5) The dye of example (2) is added to an oxalic acid bath used for producing an anodic oxide film on aluminium, and the film is then treated with a solution of ammonia.
GB1419/39A 1938-01-15 1939-01-16 Process of colouring aluminium or its alloys Expired GB523837A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH523837X 1938-01-15

Publications (1)

Publication Number Publication Date
GB523837A true GB523837A (en) 1940-07-24

Family

ID=4518117

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1419/39A Expired GB523837A (en) 1938-01-15 1939-01-16 Process of colouring aluminium or its alloys

Country Status (1)

Country Link
GB (1) GB523837A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2574225A (en) * 1948-07-28 1951-11-06 Benzol Products Company Process for rendering metal surfaces antiseptic and products therefrom

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2574225A (en) * 1948-07-28 1951-11-06 Benzol Products Company Process for rendering metal surfaces antiseptic and products therefrom

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