Aminomethyl group containing cationic dyes

US4491662A · kind A · utility

Assignee

• BASF SE

Inventors

• Manfred Patsch · Monsheim, DE
• Manfred Ruske · Ludwigshafen, DE

Key dates

• Filing date: Apr 20, 1982
• Grant date: Jan 1, 1985
• Expiry date: Apr 20, 2002

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C09B19/02
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

Dyes of the formula ##STR1## where F is an (m+n)-valent radical of a quinophthalone, dioxazine, indigo, quinacridone, triphenylmethane or rhodamine dye, M.sup..sym. is H.sup..sym. or one equivalent of a metal cation, m is 0, 1 or 2 and n is 1, 2, 3 or 4, and their salts, are very useful for dyeing and printing paper. If they are used for wet-end dyeing, the waste water is virtually colorless. The colorations obtained exhibit good lightfastness and good bleeding fastness.