GB343164A - Process for the manufacture of azo dyestuffs insoluble in water - Google Patents

Process for the manufacture of azo dyestuffs insoluble in water

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Publication number
GB343164A
GB343164A GB35020/29A GB3502029A GB343164A GB 343164 A GB343164 A GB 343164A GB 35020/29 A GB35020/29 A GB 35020/29A GB 3502029 A GB3502029 A GB 3502029A GB 343164 A GB343164 A GB 343164A
Authority
GB
United Kingdom
Prior art keywords
water
aminocarbazole
carbazole
hydroxy
carboxylic acid
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
GB35020/29A
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
Publication of GB343164A publication Critical patent/GB343164A/en
Expired legal-status Critical Current

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Abstract

Azo dyes; azo dyes, forming on the material.-Azo dyes insoluble in water are made by coupling a diazo compound of an aromatic amine, diamine or aminoazo compound or of a heterocyclic amine or of a derivative thereof containing no group inducing solubility in water e.g. COOH or SO3H, in substance or on the fibre, with an arylide of carbazole-2-hydroxy-3-carboxylic acid. In an example, cotton is impregnated with the a -naphthalide and developed with diazotized 2-aminocarbazole; a fast brownish bordeaux is obtained. The following components and shades obtained are also specified: the anilide, b -naphthalide, o- and p-anisidide; dianisidine, o-phenetidine-azo-a -naphthylamine, m- and p-nitro-o-anisidine, 9-ethyl-3-aminocarbazole, 2 : 5-dichloraniline, 5-nitro-2-anisidine. Specification 329,353, [Class 15 (ii), Dyeing, Processes &c. for], is referred to. Carbazole-2-hydroxy-3-carboxylic acid arylides are made from carbazole-2-hydroxy-3-carboxylic acid (see Specification 303,901, [Class 2 (iii), Dyes &c.]) and the corresponding amine according to known processes. 9-Ethyl-3-aminocarbazole is made by nitrating 9-ethylcarbazole and reducing.
GB35020/29A 1928-11-16 1929-11-15 Process for the manufacture of azo dyestuffs insoluble in water Expired GB343164A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE343164X 1928-11-16

Publications (1)

Publication Number Publication Date
GB343164A true GB343164A (en) 1931-02-16

Family

ID=6244117

Family Applications (1)

Application Number Title Priority Date Filing Date
GB35020/29A Expired GB343164A (en) 1928-11-16 1929-11-15 Process for the manufacture of azo dyestuffs insoluble in water

Country Status (1)

Country Link
GB (1) GB343164A (en)

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