Patent ID: 7438830

Claim:
A mixture for preparing a transparent plastic, comprising: a) a prepolymer prepared from compounds of the formula (I) and (II) and from alkyl dithiols or from polythiols wherein each R 1 is hydrogen or a methyl radical, each R 2 is a linear or branched, aliphatic or cycloaliphatic radical, or a substituted or unsubstituted aromatic or heteroaromatic radical, and each of m and n, is a whole number greater than or equal to 0, wherein m+n>0, and b) at least one monomer (A) capable of free-radical polymerization and having at least two methacrylate groups, and c) aromatic vinyl compounds, and d) a monomer selected from the group consisting of a monomer capable of free-radical polymerization and having at least two terminal olefinic groups whose reactivity differs, e) at least one ethylenically unsaturated monomer (B) and mixtures thereof; and f) a monomer capable of free-radical polymerization and having at least two terminal olefinic groups whose reactivity differs, of the formula (XIVa) wherein s and t are greater than or equal to zero and the sum s+t is in the range from 1 to 20.