Patent ID: 7445728

Claim:
A mixture for preparing transparent plastics, comprising: a) compounds of the formula (I) and (II) wherein each R 1 , independently of the others, is hydrogen or a methyl radical, each R 2 , independently of the others, is a linear or branched, aliphatic or cycloaliphatic radical, or a substituted or unsubstituted aromatic or heteroaromatic radical, and each of m and n, independently of the other, is a whole number greater than or equal to 0, where m+n>0, b) at least one prepolymer prepared from polymethacrylate and from polythiols, c) at least one aromatic vinyl compound; and d) optionally at least one monomer (A) capable of free-radical polymerization and having at least 2 methacrylate groups, e) at least one an asymmetric crosslinker 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; f) optionally at least one ethylenically unsaturated monomer (B); g) or optionally, a mixture of d), e) and f).