Photopolymerizable composition containing a thioether sensitizer

US4054682A · kind A · utility

Assignee

• BASF SE

Inventors

• Werner Kuesters · Ludwigshafen, DE
• Rolf Osterloh · Lechenich, DE
• Manfred Jacobi · Bischofswerda, DE

Key dates

• Filing date: Jan 6, 1977
• Grant date: Oct 18, 1977
• Expiry date: Jan 6, 1997

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T428/31529
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

A photopolymerizable composition containing olefinically unsaturated compounds, optional conventional additives and, as photoinitiator, a mixture of a thioether of the general formula (I): ##STR1## where R.sup.4 is phenyl, naphthyl, thienyl, furyl or styryl which may be substituted by one or more identical or different R.sup.5 's, PA1 R.sup.5 is phenyl, benzoyl, halogen, alkyl of 1 to 5 carbon atoms, alkyl having an --O--group and 1 to 5 carbon atoms, alkyl having an --S--group and 1 to 5 carbon atoms, alkoxyalkyl of 2 to 5 carbon atoms, alkaryl of 7 to 11 carbon atoms, aralkyl of 7 to 11 carbon atoms, NO.sub.2, CN, COOH or COOR.sup.6, R.sup.6 being an alkyl of 1 to 5 carbon atoms, PA1 A is the alkylene group C.sub.n H.sub.2n (n = an integer of 1 to 5) which may be substituted by one or more R.sup.4 's and/or R.sup.5 's, and PA1 R.sup.1, r.sup.2 and R.sup.3 may be identical or different and are each H, an R.sup.4 or an R.sup.5, and an organic amine. The photopolymerizable composition is suitable for the production of coatings and printing inks which can be cured by ultraviolet radiation.