Patent ID: 8044110

Claim:
A crosslinkable composition comprising: (a) at least one radically crosslinkable oligomer containing at least two reactive functional groups and having a number average molecular weight lower than about 1,000; (b) at least one cationically crosslinkable compound containing at least one reactive functional group, wherein the cationically crosslinkable compound is selected from vinyl ether terminated ester compounds having the following general formula: wherein: n is an integer from 1 to 4 inclusive; Y is a mono- di-, tri, or tetra-functional radical having a molecular weight of about 12 to about 500 and is independently selected from the group consisting of alkyl, aryl, arylalkyl, and cycloalkyl radicals; X is a divalent radical having a molecular weight of about 25 to about 500, each X being independently selected from the group consisting of alkylene and cycloalkylene radicals; and R 1 and R 2 , are monovalent radicals which are independently selected from the group consisting of hydrogen and alkyl groups having from 1 to 20 carbon atoms; (c) at least one free radical photoinitiator; and (d) at least one cationic photoinitiator.