Patent GB-334529-A (GB)
Title: The manufacture of soluble compositions for dyeing and printing
IPC: C09B67/36
Filed: 1929-05-01
Abstract: 334,529. Carpmael, A., (I. G. Farbenindustrie Akt.-Ges.). May 1, 1929. Compositions for dyeing and printing azo-dyestuffs on the material soluble in water or alkali are made by incorporating in the dry state a water soluble diazoamino compound prepared according to Specifications 320,324 or 324,041 with a coupling component for producing azodyestuffs free from sulphonic and carboxylic groups, especially a 2: 3-oxynaphthoic acid arylide. In a table the following coupling components and diazoamino compounds are specified :- components : diacetoacetyl - o - tolidide, 2 : 5 - dichloro-4-nitro-1-acetoacetylaminobenzene, 4 - nitro-2 : 5-dimethoxy-1-acetoacetylaminoben - zene, the o-toluidide, o-phenetidide, o- and panisidide, anilide, m-nitranilide, 2<1>-methyl-4<1>- methoxyanilide, alpha- and #-naphthylamide, 2<1> : 5'- dimethoxyanilide and 5<1>-chloro12<1>-toluidide of 2 : 3-oxynaphthoic acid and 2-hydroxycarbazole- 3-carboxylic acid-2<1>-toluidide : diazoamino compounds from the following amines and stabilizers : amines : 2 : 5-dichloraniline, 4-chlor-2-toluidine, 4 : 5- and 4 : 6-dichlor-2-toluidine, 4-chlor-2- anisidine, 2 : 5-dichlor-4-toluidine, 5-nitro-2- toluidine, 3-chloraniline, 2-amino-4-methoxy-5- benzoylamino-1-chlorobenzene, 4- and 5-nitro-2- anisidine, 4-amino-1 : 3-xylene, 3-amino-4-methoxy-6-nitro-1-toluene, 3-amino-4-methoxy-6-benzoylamino-1-toluene, 6-amino-4-benzoylamino- 1 : 3-dimethoxybenzene, dianisidine, 6-amino-3- benzoylamino-1: 4-diethoxybenzene, 6-amino-3- benzoylamino-4-ethoxy - 1 - methoxybenzene, 6- amino-3-benzoylamino-1 : 4-dimethoxybenzene, 3- or 4-nitro-4<1>-amino-2<1> : 5<1>-dimethoxyazobenzene, 4-methyl-4<1>-amino-2<1>-methoxy - 5' - methylazobenzene, 4-chloro-41-amino-21: 5<1>-diethoxyazobenzene; stabilizers : 4- and 5-sulpho-2-aminobenzoic acid, methylaminoacetic acid, aniline-2 : 5-disulphonic acid, 1-methyl-2-ethytaminobenzene-4-sulphonic acid. 4-amino-1-methylbenzene-2-sulphanilide, 4-sulpho-2-methylaminobenzoic acid, 1- aminonaphthalene-2 : 4-disulphonic acid, 1-aniline-2 : 3- or 3: 5-dicarboxylic acid, methylaminoethane sulphonic acid, 1-methylaminobenzene-4- sulphonic acid, n-butylaminoacetic acid. cyclohexylaminoacetic acid, 2-ethylamino-1-toluene-4- sulphonic acid, and dibenzylaminodisulphonic acid. 2 : 5-Dichloro- and 2 : 5-dimethoxy-4-nitro-1- acetoacetylaminobenzene are made respectively by heating 2 : 5-dichlor- and 2 : 5-dimethoxy-4- nitraniline with acetoacetic ester in chlorbenzene. Methylaminoethanesulphonic acid is made from ethylamine and formaldehyde bisulphite. 6 - Amino-3-benzoylamino-4-ethoxy-1-methoxy benzene is made from 1-methoxy-6-nitro-4-chloro- 3-aminobenzene and sodium ethylate, benzoylating and reducing. 6-Amino-3-benzoylamino-1- : 4-dimethoxybenzne is similarly made using sodium methylate. The Provisional Specification refers also to methylaminomethanesulphonic acid (from methylamine and formaldehyde bisulphite) and 1- ethylaminobenzene-4-sulphonic acid as stabilizers and to Specification 329,353. Reference has been directed by the Comptroller to Specification 320,324.