Acylphosphine compounds and their use as photoinitiators

US4719297A · kind A · utility

Assignee

• BASF SE

Inventors

• Andreas Henne · Neustadt, DE
• Anton Hesse · Weinheim, DE
• Manfred Jacobi · Bischofswerda, DE
• Guenter Wallbillich · Schifferstadt, DE
• Bernd Bronstert · Otterstadt, DE

Key dates

• Filing date: Nov 20, 1984
• Grant date: Jan 12, 1988
• Expiry date: Nov 20, 2004

Classification

• Technology area (CPC G): Physics
• CPC primary: G03F7/029
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

Acylphosphine compounds of the formula I ##STR1## where X is oxygen, sulfur or an electron pair, R.sup.1 is R.sub.4 or OR.sup.4, R.sup.2 is --OM, where M is a monovalent cation, R.sup.3 is aryl which is substituted at least at the two positions ortho to the carbonyl group, and R.sup.4 is hydrogen, alkyl or aryl, are very effective photoinitiators for photopolymerizable materials, such as coating compositions, finishes, printing inks, unsaturated polyesters, recording media and preferably aqueous polymer dispersions or solutions.