Photocurable compositions with acylphosphine oxide photoinitiator

US4710523A · kind A · utility

Assignee

• BASF SE

Inventors

• Peter Lechtken · Bischofswerda, DE
• Ingolf Buethe · Haßloch, DE
• Manfred Jacobi · Bischofswerda, DE
• Werner Trimborn · Schifferstadt, DE

Key dates

• Filing date: Jan 18, 1984
• Grant date: Dec 1, 1987
• Expiry date: Jan 18, 2004

Classification

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

Abstract

Acylphosphine oxide compounds of the general formula ##STR1## where R.sup.1 is alkyl, cyclohexyl, cyclopentyl, aryl which is unsubstituted or substituted by halogen, alkyl or alkoxy, or an S-containing or N-containing five-membered or six-membered heterocyclic radical, PA1 R.sup.2 has one of the meanings of R.sup.1 (but R.sup.1 and R.sup.2 may be identical or different) or is alkoxy, aryloxy or aralkoxy, or R.sup.1 and R.sup.2 together form a ring and PA1 R.sup.3 is an at least disubstituted phenyl, pyridyl, furyl or thienyl radical which carries, at least at the two carbon atoms adjacent to the linkage point of the carbonyl group, the substituents A and B, which may be identical or different, and each of which is alkyl, alkoxy or alkylthio of 1 to 6 carbon atoms, cycloalkyl of 5 to 7 carbon atoms, phenyl or halogen, or R.sup.3 is .alpha.-naphthyl substituted by A and B at least in the 2- and 8-positions or is .beta.-naphthyl substituted by A and B at least in the 1- and 3-positions, a process for the preparation of these acylphosphine oxide compounds from acid halides of the general formula ##STR2## where X is chlorine or bromine, and a phosphine of the general formula ##STR3## an…