Patent ID: 6043323
Filing Date: 2000-03-28
Classification: B33Y,C07C,G03F,Y10S

Abstract:
A photosensitive composition consisting essentially of(a) 5-65% by weight of a compound of formula (Ia) or (Ib), ##STR9## wherein the substituents R.sub.1 are each independently of the other hydrogen or methyl, R.sub.2 is an unsubstituted C.sub.1 -C.sub.20 alkyl group or a C.sub.1 -C.sub.20 alkyl group which is substituted by one or more than one substituent selected from the group consisting of hydroxy, C.sub.6 -C.sub.14 aryl and halogen, an unsubstituted phenyl group or a phenyl group which is substituted by one or more than one substituent selected from the group consisting of C.sub.1 -C.sub.6 alkyl, hydroxy or halogen, or is a radical of formula --CH.sub.2 OR.sub.3, wherein R.sub.3 is an unsubstituted C.sub.1 -C.sub.20 alkyl group or a C.sub.1 -C.sub.20 alkyl group which is substituted by one or more than one substituent selected from the group consisting of hydroxy, C.sub.6 -C.sub.14 aryl and halogen, an unsubstituted phenyl group or a phenyl group which is substituted by one or more than one substituent selected from the group consisting of C.sub.1 -C.sub.6 alkyl, hydroxy and halogen, or is a C.sub.2 -C.sub.6 alkenyl group, a C.sub.2 -C.sub.20 acyl group or an unsubstituted cyclohexylcarbonyl group or a cyclohexylcarbonyl group which is substituted by one or more than one substituent selected from the group consisting of C.sub.1 -C.sub.6 alkyl, hydroxy and halogen, Z is a group of formulae (IIa)-(IIe) ##STR10## wherein Y is a direct bond, C.sub.1 -C.sub.6 alkylene, --S--, --O--, --SO--, --SO.sub.2 -- or --CO--, and R.sub.1 is hydrogen or methyl, and wherein the aromatic and cycloaliphatic rings of formulae (IIa)-(IIe) are unsubstituted or substituted by one or more than one substituent selected from the group consisting of C.sub.1 -C.sub.6 alkyl, chloro and bromo,(b) 15-70% by weight of one or more than one bifunctional acrylate or methacrylate having a molecular weight in the range from 150 to 450 and differing from the compound of formula (Ia) or (Ib),(c) 0-40% by weight of one or more than one monomeric polyfunctional acrylate or methacrylate having a functionality of not less than 3 and a molecular weight of not more than 600,(d) 0-10% by weight of at least one monofunctional acrylate or methacrylate,(e) 0-10% by weight of N-vinylpyrrolidone or N-vinylcaprolactam,(f) 2-10% by weight of at least one photoinitiator, and(g) 0-60% by weight of at least one urethane acrylate or methacrylate having a functionality of 2-4 and a molecular weight in the range from 500-10 000,such that the sum of the amounts of components (a) to (g) together is 100% by weight.