Isoindoline colorants

US4316023A · kind A · utility

Assignee

• BASF SE

Inventors

• Georg Henning · Ludwigshafen, DE
• Wolfgang Lotsch · Beindersheim, DE

Key dates

• Filing date: Apr 4, 1980
• Grant date: Feb 16, 1982
• Expiry date: Apr 4, 2000

Classification

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

Abstract

Isoindoline colorants of the general formula ##STR1## where R.sup.1 is C.sub.1 -C.sub.4 -alkyl, PA1 R.sup.2 is hydrogen or C.sub.1 -C.sub.4 -alkyl and PA1 X is oxygen, sulfur, imino or N-cyanoimino, and the ring C may or may not be substituted by groups which do not confer solubility. In surface coatings, printing inks and plastics, the colorants give very deep and brilliant yellow colorations which have good to very good lightfastness and fastness to overcoating.