Copper-phthalocyanine dyestuffs

US4647409A · kind A · utility

Assignee

• BAYER HEALTHCARE LLC · DE

Inventors

• Manfred Groll · Leverkusen, DE
• Dieter Ockelmann · Cologne, DE

Key dates

• Filing date: Sep 9, 1985
• Grant date: Mar 3, 1987
• Expiry date: Sep 9, 2005

Classification

• Technology area (CPC D): Textiles; Paper
• CPC primary: D21H21/28
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

Basic copper-phthalocyanine dyestuffs of the formula ##STR1## in which Cu--Pc denotes the radical of an x-valent copper-phthalocyanine, PA0 A and B independently of each other denote an alkylene radical having 2 to 5 carbon atoms, PA0 R.sub.1 and R.sub.3 independently of each other denote hydrogen or an alkyl radical having 1 to 3 carbon atoms which is optionally substituted by hydroxyl, C.sub.1 - to C.sub.3 -alkoxy, halogen or an NH.sub.2 group, PA0 R.sub.2 denotes an alkyl group having 1 to 3 carbon atoms which is optionally substituted by hydroxyl, C.sub.1 - to C.sub.3 -alkoxy or halogen, PA0 n denotes the number 1 to 3, PA0 x denotes the value 1.8 to 2.5, or if n=1 and A=C.sub.2 H.sub.4, R.sub.1 +R.sub.2 denotes an ethylene bridge. find utility for dyeing paper.