Phthalocyanine dyestuffs and process for preparing them

US4033980A · kind A · utility

Assignee

• Hoechst GmbH · DE

Inventors

• Fritz Meininger
• Klaus Hunger · Kelkheim, DE
• Hartmut Springer · Königstein, DE

Key dates

• Filing date: Aug 18, 1972
• Grant date: Jul 5, 1977
• Expiry date: Aug 18, 1992

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C09B47/26
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

A water-soluble phthalocyanine dyestuff of the formula ##STR1## IN WHICH Pc represents copper phthalocyanine, nickel phthalocyanine or cobalt phthalocyanine, R.sub.3 represents lower alkyl, B represents --CH.sub.2 --CH.sub.2 --, --CH.sub.2 --CH.sub.2 --NH--, ##STR2## A represents phenylene or phenylene substituted by lower alkyl, lower alkoxy, carboxyl, hydroxyl, sulfo, nitro, chlorine or bromine, or naphthylene, X represents --CH.sub.2 -- or ##STR3## R.sub.1 and R.sub.2 each stand for hydrogen, lower alkyl, hydroxyethyl, sulfoethyl, carboxyethyl, benzyl, phenyl, carboxyphenylene or sulfophenylene, or together with the nitrogen atom piperidyl or morpholyl, n and m each represent 0 or 1, a, b and c each stand for a number from 1 to 4, the sum of a, b and c being at most 6, said dyestuff being suitable for the dyeing or printing of leather or textile materials consisting of native or regenerated cellulose, silk or polyamides, the dyeings and prints obtained on said materials being distinguished by deep tints and very good fastness properties to light and to wetting.