Isoindoline colorants

US4352932A · kind A · utility

Assignee

• BASF SE

Inventors

• Wolfgang Lotsch · Beindersheim, DE
• Reinhard Kemper · Heidelberg, DE
• Ernst Schefczik

Key dates

• Filing date: Jan 22, 1981
• Grant date: Oct 5, 1982
• Expiry date: Jan 22, 2001

Classification

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

Abstract

Isoindoline colorants of the formula ##STR1## where X is a radical of the formula ##STR2## R.sup.1 is hydrogen, C.sub.1 -C.sub.4 -alkyl, benzyl, phenyl, 1-naphthyl or a 5-membered or 6-membered, unsaturated heterocyclic radical which may or may not be benzo-fused, R.sup.2 and R.sup.3, independently of one another, are hydrogen, C.sub.1 -C.sub.4 -alkyl, benzyl, phenyl or 1-naphthyl, and the ring A and the phenyl, naphthyl and heterocyclic radicals in R.sup.1, R.sup.2 and R.sup.3 can be substituted by groups which do not confer solubility. The colorants give deep, strongly bluish red hues in surface coatings, printing inks and plastics. The colorations have good lightfastness and fastness to migration.