Patent ID: 7214754

Claim:
A polymerizable composition comprising: (a) a major amount of a radically polymerizable first monomer represented by the following general formula, R—[—O—C(O)—O—R 1 ] i wherein R is a polyvalent residue of a polyol having at least two hydroxy groups, R 1 is an allyl group, and i is a whole number from 2 to 4; and (b) 0.1 to 5 weight percent based on total weight of the composition of a radically polymerizable second monomer represented by the following general formula, wherein R 2 is a polyvalent linking group that is free of urethane linkages; R 3 is a residue of a material having a single hydroxy group and at least one allyl group, R 3 being free of urethane linkages; and j is a number from 2 to 4.