GB340534A - Manufacture of improved preparations useful for the production of dyestuffs - Google Patents

Manufacture of improved preparations useful for the production of dyestuffs

Info

Publication number
GB340534A
GB340534A GB2971829A GB2971829A GB340534A GB 340534 A GB340534 A GB 340534A GB 2971829 A GB2971829 A GB 2971829A GB 2971829 A GB2971829 A GB 2971829A GB 340534 A GB340534 A GB 340534A
Authority
GB
United Kingdom
Prior art keywords
nitrosamine
anilide
caustic soda
sodium acetate
salt
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
GB2971829A
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.)
IG Farbenindustrie AG
Original Assignee
IG Farbenindustrie AG
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 IG Farbenindustrie AG filed Critical IG Farbenindustrie AG
Priority to GB2971829A priority Critical patent/GB340534A/en
Publication of GB340534A publication Critical patent/GB340534A/en
Expired legal-status Critical Current

Links

Classifications

    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06P—DYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
    • D06P1/00—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed
    • D06P1/02—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed using azo dyes
    • D06P1/12—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed using azo dyes prepared in situ
    • D06P1/127—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed using azo dyes prepared in situ using a stabilised diazo component, e.g. diazoamino, anti-diazotate or nitrosamine R-N=N-OK, diazosulfonate, hydrazinesulfonate, R-N=N-N-CN

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

Azo dyes.-Dry preparations for the production of dyestuffs are made by mixing a nitrosamine alkali metal salt and an arylamide of 2 : 3-oxynaphthoic acid containing no sulphonic or carboxylic group and adding to the mixture a normal salt capable of binding water. In examples the following mixtures are specified, the nitrosamine being added in alkaline paste form: (1) nitrosamine of 2 : 5-dichloraniline containing free caustic soda, anhydrous sodium acetate and the o-phenetidide or o-anisidide or anilide (sodium salt), (2) nitrosamine of 4-chloro-2-aminoanisole containing caustic potash, caustic soda, sodium acetate and the o-anisidide, (3) nitrosamine of dianisidine containing caustic potash, sodium acetate and the anilide (sodium salt), (4) nitrosamine of 3-nitro-4-aminotoluene containing caustic soda, sodium acetate and the anilide (sodium salt). Specifications 6663/15 and 328,383, [both in Class 2 (iii), Dyes &c.], are referred to. Sodium salt of 2 : 3-oxynaphthoic acid anilide is made by mixing a paste of the anilide with a paste of caustic soda and drying at a moderate temperature with or without a vacuum.
GB2971829A 1929-10-01 1929-10-01 Manufacture of improved preparations useful for the production of dyestuffs Expired GB340534A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2971829A GB340534A (en) 1929-10-01 1929-10-01 Manufacture of improved preparations useful for the production of dyestuffs

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2971829A GB340534A (en) 1929-10-01 1929-10-01 Manufacture of improved preparations useful for the production of dyestuffs

Publications (1)

Publication Number Publication Date
GB340534A true GB340534A (en) 1931-01-01

Family

ID=10296003

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2971829A Expired GB340534A (en) 1929-10-01 1929-10-01 Manufacture of improved preparations useful for the production of dyestuffs

Country Status (1)

Country Link
GB (1) GB340534A (en)

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