COPPER PHTHALOCYANINE DYE, SYNTHESIS THEREOF, AQUEOUS SOLUTION THEREOF AND UTILIZATION THEREOF IN DYEING PAPER

摘要

Basic copper-phthalocyanine dyestuffs of the formula IMAGE (I) in which Cu-Pc denotes the radical of an x-valent copper-phthalocyanine, A and B independently of each other denote an alkylene radical having 2 to 5 carbon atoms, R1 and R3 independently of each other denote hydrogen or an alkyl radical having 1 to 3 carbon atoms which is optionally substituted by hydroxyl, C1- to C3-alkoxy, halogen or an NH2 group, R2 denotes an alkyl group having 1 to 3 carbon atoms which is optionally substituted by hydroxyl, C1 - to C3-alkoxy or halogen, n denotes the number 1 to 3, x denotes the value 1.8 to 2.5, or if n=1 and A=C2H4, R1+R2 denotes an ethylene bridge. find utility for dyeing paper.