Photopolymerizable composition with acylphosphine sulfide photoinitiator and method

US4522693A · kind A · utility

Assignee

• BASF SE

Inventors

• Andreas Henne · Neustadt, DE
• Anton Hesse · Weinheim, DE
• Guenter Heil
• Gunnar Schornick · Neuleiningen, DE

Key dates

• Filing date: Jun 2, 1983
• Grant date: Jun 11, 1985
• Expiry date: Jun 2, 2003

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10S430/122
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

Acylphosphine sulfides of the formula ##STR1## where R.sup.1 is alkyl, cycloalkyl or an unsubstituted or substituted phenyl, naphthyl or heterocyclic radical; R.sup.2 has the meaning of R.sup.1 and can be identical to or different from R.sup.1, or is alkoxy, unsubstituted or substituted phenoxy or phenoxyalkyl, or R.sup.1 or R.sup.2 are linked together to form a ring, which may contain further alkyl substituents and fused-on benzene rings; R.sup.3 is alkyl, a cycloaliphatic radical, substituted phenyl, an unsubstituted or substituted naphthyl or heterocyclic radical or the group ##STR2## where X is unsubstituted or substituted phenylene or an aliphatic or cycloaliphatic divalent radical; and where one or more of R.sup.1, R.sup.2 and R.sup.3 may be olefinically unsaturated. These acylphosphine sulfides can be prepared from acylphosphines and sulfur and can be used as photoinitiators in photopolymerizable compositions.