4-STILBENYL-1,2,3-TRIAZOLES, PROCESS FOR PREPARING THEM AND THEIR USE AS OPTICAL BRIGHTENERS

摘要

Compounds of the formula (I) (I) in which R is hydrogen, triphenyl-methyl or lower alkyl, which may be substituted by phenyl, hydroxy, lower carbalkoxy, cyano, carbonamido, mono- or dialkyl carbonamido, carboxy or benzoyl, z is cyano, carbalkoxy, carbonamido or imidazolyl, X is hydrogen, chlorine, methyl, methoxy, cyano or lower carbalkoxy, n is 1 to 3, and A is an aromatic carbocylic group or an aromatic heterocyclic 5- 6-membered group as well as their N-alkylated quaternary reaction products. These compounds are useful as optical brighteners for lacquers, natural or synthetic fibers and films, foils or other shaped forms made therefrom.