Patent ID: 7144954

Claim:
A composition comprising a mixture of: A) compounds of the formulas (I) and (II): wherein R 1 independently at each instance hydrogen or a methyl radical, R 2 is independently at each instance at least one selected from the group consisting of a linear aliphatic radical, a branched aliphatic radical, a cycloaliphatic radical, an aromatic radical and a heteroaromatic radical, and m and n are each independently an integer of not less than 0, subject to the proviso that m+n>0; B) at least one ethylenically unsaturated monomer (A) which is different from said compounds of said formulas (I) and (II); and C) at least one thiourethane compound (T), said compound (T) obtained by: a) the reaction of one equivalent of at least one diisocyanate of the formula (X): OCN—R 9 —NCO (X), wherein R 9 is at least one selected from the group consisting of a linear aliphatic radical, a branched aliphatic radical, a cycloaliphatic radical, an aromatic radical and a heteroaromatic radical, with v D equivalents of a dithiol of the formula (XI): HS—R 10 —SH (XI), wherein v D is from 0.1 to 0.9, R 10 is at least one selected from the group consisting of a linear aliphatic radical, a branched aliphatic radical, a cycloaliphatic radical, an aromatic radical and a heteroaromatic radical, or v D equivalents of a composition comprising at least one dithiol of said formula (XI) and at least one compound of said formula (XII): HO—R 11 -ZH (XII), wherein R 11 is at least one selected from the group consisting of a linear aliphatic radical, a branched aliphatic radical, a cycloaliphatic radical, an aromatic radical and a heteroaromatic radical, Z is oxygen or sulphur, in the presence of a catalytically effective amount of a urethane catalyst; and b) the reaction, in the presence of reaction-catalyzing and stabilizing compounds, of at least one α,ω-difunctional thiourethane compound of step a) with v H equivalents of at least one hydroalkyl (meth)acrylate of the formula (XIII): CH 2 ═C(R 12 )—COO[CH(R 13 )] q —CH 2 —OH (XIII), wherein v H =2–2* v D , R 12 is hydrogen or a methyl radical, R 13 is hydrogen or a linear or branched alkyl radical having 1 to 4 carbon atoms, and Q is a positive integer from 1 to 3.