| abstract |
Dyestuff salts are of formula (I) -… F.(A)n (I> in which n is 1, 2, 3, or 4; and either-… … … (i) F is the radical of an anionic dyestuff, and A is a radical containing at least one ammonium, cycloammonium or immonium group; and at least one aliphatic or cycloaliphatic group or an aromatic group substituted by at least one carbonyl group, or one heteroaromatic group selected from those of the triazine, pyrimidine, quinazoline, quinoxaline, phthalazine, or phthalimidine series: and wherein the radical A containing at least one aliphatic or cycloaliphatic group also contains at least one cyclic ammonium group; or … (ii) F is the radical of a cationic dyestuff, and A is a group containing at least one carboxylic acid or sulphonic acid radical and one aliphatic, cycloaliphatic, monomeric aromatic or heteroaromatic group or is a C2-14-dicarboxylic acid or amino-C2-12-alkylcarboxylic acid. … …<??>When applied to synthetic polyamide masses, salts (I) yield dyeings with exceptionally good wet fastness. |