GB803525A - Basic dyestuffs - Google Patents

Abstract

The invention comprises salts of (a) azo, anthraquinone, phthalocyanine and dioxazine dyes which contain at least one sulphonamide, carbonamide or aminoalkyl group and are substituted at one or more nitrogen atoms of the amide or aminoalkyl groups by an aliphatic radicle which contains a tertiary nitrogen atom; with (b) inorganic acids, carboxylic acids, organic sulphonic acids or such esters of organic dibasic and polybasic acids as contain at least one free carboxylic group. These salts may be made simply by reacting the acid and the basic dyestuff, e.g. in aqueous suspension, in an organic solvent in which the salt is insoluble, or by mixing or kneading without solvents. The products may be used in printing inks, stamp inks, typewriter inks, and in ballpoint pen pastes. In examples: (1) a dye base prepared from a mixture of copper phthalocyanine di- and tri-sulphochlorides and 1-amino - 3 - dimethylamino - propane according to Example (1) of Specification 784,843 is reacted with (a) phthalic acid mono-octyl ester, (b) oleic acid, (c) phthalic acid monobutyl ester, (d) Gersthofen wax S (a montan wax in which 15 per cent of the fatty acids are esterified with higher alcohols), (e) phthalic acid monobenzyl ester, (f) acetic acid; (2) a dye base prepared from tri- or tetra-chlormethyl copper phthalocyanine and 1-diethylamino-4-amino-n-pentane (Example (7) of Specification 784,843) is reacted with oleic acid; (3) the dye base from tetraphenyl copper phthalocyanine tetrasulphochloride and 1-amino-3-dimethylamino-propane is reacted with phthalic acid mono-octyl ester. In examples of ink compositions, (4) the product of 1(f) above is mixed with glycerine, dextrin, gum arabic and water to give a document ink; (5) the phthalocyanine dyestuff of Example (10) of Specification 784,843 is converted to acetate and this is kneaded with diamond green, kaolin and tragacanth to give a pencil lead; (6) the product of (2) above is mixed with Victoria blue, oleic acid, stearin, castor oil, sesame oil and mineral oil to form a typewriter ribbon ink; (7) the product of 1(b) above is dissolved in castor oil and colophony or an alkyd resin added to give a ball-point pen paste; (8) the acetate, oxalate, or malonate of a mixture of the dye base under (1) above and a basic oxazine dye prepared by condensation of chloranil and naphthylamine, sulphochlorination and reaction with 1 - diethylamino - 4 - amino - n - pentane is mixed with glycerine, dextrin and alcohol or ox gall to give an ink; (9) the dye base prepared from a sulphochloride of 4-p-toluido-N-methyl-anthrapyrimidone and 1 - amino - 3 - dimethylamino-propane is reacted with phthalic acid monobenzyl ester in benzyl alcohol; (10) the azo dye of the formula <FORM:0803525/IV (c)/1> is converted to its sulphochloride, this is reacted with 1 - dimethylamino - 4 - amino - n - pentane and the product is reacted with acetic acid in ethyl alcohol to give an ink for stamp pads.