Process for the simultaneous dyeing and/or optical bleaching and finishing of textiles with cross-linkable fluorescent copolymers

摘要

4,6-Dimethyl -7- acryloyl - hydroxyethyl - amino-coumarin of the formula: is produced from 4,6-dimethyl -7- b-hydroxyethylamino-coumarin by esterification with acrylic acid. ALSO: Fluorescent copolymers are obtained by emulsion, solution, bulk, suspension or precipitation polymerization of fluorescent dyes containing a polymerizable olefinic group outside of the fluorescent system with non-coloured, non-fluorescent compounds containing a polymerizable olefinic group and groups which are accessible to condensation or addition reactions and, optionally, with other polymerizable non-coloured, non-fluorescent compounds. Suitable fluorescent dyes are of the stilbene, triarylmethane coumarin, aminonaphthalimide, aminoterephthalic diamide and azomonomethinecyanine series; their polymerizable groups, e.g. acryloyl or allyl, may be introduced by way of acid, hydroxy or amino groups. In the examples (1) an emulsion polymer of butyl acrylate, N-methylolmethacrylamide, methacrylamide and 4, 6 - dimethyl - 7 - acryloyl - hydroxyethylaminocoumarin is prepared by emulsion polymerization and (2) a copolymer of butyl acrylate, N-methylolmethacrylamide and 4, 6-dimethyl-7-acryloylhydroxyethylamino-coumarin is prepared in ethanol solution. ALSO: Textiles, e.g. of cotton or polypropylene, are simultaneously dyed in fluorescent shades and/or optically brightened and finished by applying thereto a solution or dispersion of a cross-linkable copolymer obtained by copolymerization of fluorescent dyes containing a polymerizable olefinic group outside of the fluorescent system with non-coloured, non-fluorescent compounds containing polymerizable olefinic groups which are accessible to condensation or addition reactions and optionally with other polymerizable non-coloured, non-fluorescent compounds and cross-linking the copolymer either directly or with the aid of suitable bi-or poly-functional compounds. Specified fluorescent dyes are from the stilbene, triarylmethane, coumarin, aminonaphthalimide, aminoterephthalic diamide and azomonomethinecyanine series. The polymerizable olefinic groups, e.g. acryloyl or allyl, may be attached by way of acid, hydroxy or amino groups. The copolymer may be obtained by the methods of emulsion, solution, bulk, suspension or precipitation polymerization. Examples are given.