Photopolymerizable composition and its use

US4134813A · kind A · utility

Assignee

• BASF SE

Inventors

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

Key dates

• Filing date: Dec 8, 1977
• Grant date: Jan 16, 1979
• Expiry date: Dec 8, 1997

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T428/31699
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

A photopolymerizable composition which contains one or more olefinically unsaturated compounds and from 0.2 to 20% by weight (based on the unsaturated compound(s)) of a photoinitiator, with or without conventional additives, the photoinitiator being a mixture of one or more aromatic carbonyl compounds of the general formula (A) ##STR1## where Ar is an ortho-arylene radical which may or may not be substituted by one or more radicals R.sup.1 to R.sup.4, R.sup.1, R.sup.2, R.sup.3 and R.sup.4 are identical or different and each is H, alkyl or 1 to 5 carbon atoms, phenyl, halogen, alkoxy of 1 to 5 carbon atoms, alkaryl of 7 to 11 carbon atoms, aralkyl of 7 to 11 carbon atoms or --CO.sub.2 R.sup.9, where R.sup.9 is alkyl of 1 to 5 carbon atoms, and n is 0 or 1, and an amine, with or without an aromatic carbonyl compound which differs from (A). This photopolymerizable composition is particularly suitable for the manufacture of photopolymer printing plates and UV-curing printing inks.