Patent GB-459797-A (GB)
Title: Improvements in and relating to the manufacture of dyestuff compositions
IPC: C09B67/42
Filed: 1935-07-12
Abstract: Dyestuffs, or pigments, especially such as are to be used for colouring lacquers, varnishes, oils, fats, waxes, cellulose derivatives, polishes, shoe creams or natural or artificial resins, are admixed with highly chlorinated diphenyls having a chlorine content of more than 40 per cent (cf. Specification 360,840).  The use of such compounds is advantageous in that they do not crystallize out from lacquers &c. on drying, are resistant to light, and do not affect the fastness to light of the dyestuffs or pigments.  The following examples are specified: (1) a colouring preparation for incorporation in an oil varnish is obtained by mixing 2 parts of a chlorinated diphenyl containing 60 per cent of chlorine with 10 parts of the dyestuff 3-nitro-4-aminotoluene --> b -naphthol, or with one of the following dyestuffs or pigments, viz., the calcium or barium salt of 4-aminotoluene-3-sulphonic acid --> 2 : 3-oxynaphthoic acid, 4-chloro-2-nitraniline --> the 2-chloranilide of acetoacetic acid, 5-chloro-2-aminotoluene --> 2-(2<1> : 3<1>-oxynaphthoyl) amino-5-chlorotoluene, 1 : 2 : 1<1> : 2<1>-anthraquinonedihydroazine, indigo, Prussian blue or lead chromate; (2) a colouring preparation for incorporation in waxes for candles, polishes, &c. is obtained by mixing 1 part of a similar chlorinated diphenyl with 4 parts of 1 : 4-diaminoanthraquinone; (3) a colouring preparation for incorporation in a spirit varnish is obtained by mixing 1 part of a similar chlorinated diphenyl with 3 parts of Auramine base or with aminoazobenzene --> b -naphthol or aniline --> dimethylaniline.ALSO:Dyestuffs or pigments, especially such as are to be used for colouring lacquers, varnishes, oils, fats, waxes, cellulose derivatives, polishes, shoe creams or natural or artificial resins, are admixed with highly chlorinated diphenyls having a chlorine content of more than 40 per cent (cf. Specification 360,840, [Group IV]).  The use of such compounds is advantageous in that they do not crystallize out from lacquers &c. on drying, are resistant to light and do not affect the fastness to light of the dyestuffs or pigments.  The following examples are specified: (1) a colouring preparation for incorporation in an oil varnish is obtained by mixing 2 parts of a chlorinated diphenyl containing 60 per cent of chlorine with 10 parts of the dyestuff 3-nitro-4-aminotoluene --> b -naphthol or with one of the following dyestuffs or pigments, viz. the calcium or barium salt of 4-aminotoluene-3-sulphonic acid --> 2 : 3-oxynaphthoic acid, 4-chloro-2-nitraniline --> the 2-chloranilide of acetoacetic acid, 5-chloro-2-aminotoluene --> 2-(2<1> : 3<1>-oxynaphthoyl)amino-5-chlorotoluene, 1 : 2 : 1<1> : 2<1>-anthraquinonedihydroazine, indigo, Prussian blue or lead chromate; (2) a colouring preparation for incorporation in waxes for candles, polishes, &c. is obtained by mixing 1 part of a similar chlorinated diphenyl with 4 parts of 1 : 4-diaminoanthraquinone; (3) a colouring preparation for incorporation in a spirit varnish is obtained by mixing 1 part of a similar chlorinated diphenyl with 3 parts of Auramine base or with aminoazobenzene --> b -naphthol or aniline --> dimethylaniline.