Patent GB-552919-A (GB)
Title: Improvements in or relating to compositions for printing on textiles and in methods of printing on textile fabrics
IPC: D06P1/12
Filed: 1941-04-23
Abstract: 552,919. Emulsions. STEVENS, A. H. (Interchemical Corporation). April 23, 1941, No. 5262. [Class 1 (i)] [Also in Group IV] A composition, suitable for incorporation with an aqueous liquid to form a water-in-oil emulsion for use in textile printing, comprises a water-insoluble triazene (diazoamino or diazoimino) compound at least microscopically dispersed in a solution of a water-insoluble filmforming agent in a volatile water-immiscible organic solvent. Specified diazo components for the triazenes are dianisidine, 4-chloro-2-aminotoluene, 2:2<SP>1</SP>-dichloro-4:4<SP>1</SP>-diaminodiphenyl, mnitro-p-toluidine, 4-nitroaniline and 4-benzoylamino-2:5-diethoxy-aniline and specified stabilising components are ethylamine, dimethyl-amine, diamylamine, dioctylamine, dicyclohexylamine, morpholine, N-methyl-aniline and piperidine. Specified film-forming agents are cellulose esters, e.g. cellulose acetate or nitrate, cellulose ethers, e.g. benzyl- or ethyl-cellulose, alkyd resins, e.g. a soya-modified glycerol phthalate resin, hydrophobe urea resins, coumarone resins, indene resins, bodied oils, heavy metal soaps, natural, e.g. damar, resins, natural or synthetic rubber or rubber derivatives. The preparation is described of the triazene compounds from (1) diazotised or tetrazotized 4-chloro-2-aminoanisole, dianisidine, 4-chloro-2-aminotoluene, 2:2'- dichloro-4:4<SP>1</SP>-diaminodiphenyl, m-nitro-p-toluidine or 4-benzoyl-amino-2:5-diethoxyaniline and dimethylamine, (2) diazotized 5-chloro-2-aminotoluene and morpholine, (3) diazotized 4-chloro- 2-aminotoluene and morpholine, (4) diazotized 4-benzoylamino-2:5-diethoxyaniline and morpholine, (5) diazotized 4-chloro-2-amino-anisole and dicyclohexylamine, (6) diazotized 4-chloro-2- aminoanisole and piperidine, (7) diazotized 4- chloro-2-aminoanisole and methylaniline. In examples of the preparation and use of the compositions and emulsions, (8) a mixture of a hydrogenated petroleum naphtha and toluene containing ethyl cellulose, a diazoimino compound and pine oil is stirred with an aqueous solution of the 2<SP>1</SP>-anisidide of 2.3-hydroxynaphthoic acid, caustic soda and Turkey red oil to form a water-in-oil emulsion which is printed on a fabric, e.g. of wool, cotton, regenerated cellulose or cellulose acetate, whereupon the print is developed by treatment with steam containing acetic and formic acid vapours. (9) a mixture as in (8) is emulsified by adding first a strong aqueous solution of hydrochloric acid and then water, the emulsion is printed on a similar fabric impregnated with a coupling component and the print is finished by drying, soaping and re-drying, (10) an emulsion comprising a hydrogenated petroleum naphtha containing a soya-modified glycerol phthalate resin, the diazoimino compound from tetrazotized dianisidine and dimethylamine, and water is mixed with an emulsion comprising the same hydrogenated naphtha, the same resin and aqueous hydrochloric acid, the mixture is printed on a similar fabric and the print is finished as in (9). Specification 524,803, [Group IV], is referred to.