Substituted benzopyran compounds

Abstract

Abstract There are described novel dyes of the formulae ##STR1## in which R 1 and R 2 independently of one another are each hydrogen, unsubstituted or substituted alkyl, cycloalkyl, aralkyl or aryl, and R 1 and R 2 together with the nitrogen atom, and optionally with the inclusion of further hetero atoms, can also form a 5- to 7-membered heterocycle, or one of the radicals R 1 or R 2 can be linked with the carbon atoms, in the o-position with respect to the amino group, of the ring A to form a fused-on, saturated, unsubstituted or substituted 5- or 6- membered ring, X is ═NR 3 , ═NCOR 4 , ##STR2## ═NH or ═O, wherein R 3 is alkyl or unsubstituted or substituted phenyl, R 4 is unsubstituted or substituted alkyl, aralkyl, aryl, vinyl, alkoxy, phenoxy or amino, and R 5 is cyano, carbalkoxy, or unsubstituted or substituted carbonamide, and R 6 is an electron-attracting radical, processes for producing them, and their use for dyeing and printing synthetic and semi-synthetic fibres, such as polyamide and cellulose triacetate materials, especially however polyester materials.

Inventors

• 👤 Peter Mockli

Bibliographic Details