Fibre-reactive UV absorbers such as alpha, omega-bis(2-cyano-3,3-diphenylacryloylamide), can be applied to fabrics during washing to protect human skin against UV, or applied to colored fabrics to reduce fading

摘要

Fibre-reactive UV absorbers containing a structural unit of formula (I). Use of compounds (A) with at least one structural unit of formula (I) as UV absorber which has affinity to textile fibres. X = -CR1=CR2- or carbonyl C=O; R1 and R2 = independently, H; 1-8C alkyl; 1-8C alkoxy; 1-8C alkoxycarbonyl; 1-8C acyloxy; carboxyl; cyano; nitro; F; Cl; Br; sulfonyl; 1-8C alkylsulfonyl; or phenyl which may be substituted by up to 3 groups selected from 1-8C alkyl, 1-8C alkoxy, 1-8C alkoxycarbonyl, 1-8C acyloxy, carboxyl, cyano, nitro, Cl, Br, sulfonyl and 1-8C alkylsulfonyl; or R1 may also = -NQ-CO- linked to the ortho position of the neighboring phenyl nucleus by way of its carbonyl C atom to form a benzopyrrolidone system and in which Q = H or 1-8C alkyl; Z = substituents selected from 1-8C alkyl; 1-8C alkoxy; 1-8C alkoxycarbonyl; 1-8C acyloxy; carboxy; cyano; nitro; F; Cl; Br; sulfonyl; 1-8C alkylsulfonyl; amino; mono- or di-C1-C8-alkylamino; carboxamido which may carry one or two 1-8C alkyl groups on the amido N atom; hydroxy; or saturated or unsaturated 5- or 6-membered heterocyclic residue which may be condensed on; or any two neighboring substituents Z may together form a saturated or unsaturated 5- or 6-membered ring, and when p = 0, a carboxyl group in the ortho position and the carbonyl group already present may, together with N atoms bound to these carbonyl groups, form a cyclic imide; n = 0, 1, 2 or 3; p = 0, 1, 2, 3, 4 or 5.