Isoindoline colorants

US4311527A · kind A · utility

Assignee

• BASF SE

Inventor

• Wolfgang Lotsch · Beindersheim, DE

Key dates

• Filing date: Mar 4, 1980
• Grant date: Jan 19, 1982
• Expiry date: Mar 4, 2000

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C09B57/04
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

Plastics, finishes and printing inks which contain, as the colorant, one or more compounds of the formula ##STR1## where A is hydrogen or phenyl and PA0 B is hydrogen, C.sub.1 -C.sub.4 -alkyl, phenyl or carbo-C.sub.1 -C.sub.4 -alkoxy, the phenyl radicals and the ring C being unsubstituted or substituted by groups which do not confer solubility, and PA0 the four groups A and B may be identical or different from one another. The colorants have a high tinctorial strength and the colorations have good fastness characteristics and high infrared reflectance.