Polymerisable composition, which comprises a thermolabile polymerisable compound of Formula I: A-[X-(T-X-Sp-X) p -T-X-Q-(Z) n ] m Formula I, in which A represents an m-valent linear, branched or cyclic aliphatic or aromatic C 1 -C 30 group which can be interrupted by -O-, -S-, -CO-O-, -O-CO-, -CO-NR 3 -, -NR 3 -CO-, -O-CO-NR 3 -, -NR 3 -CO-O- or -NR 3 -CO-NR 3 -, or represents an oligomeric group with a molecular weight of from 200 to 2000 g/mol, Q in each case independently is absent or represents an (n+1)-valent linear, branched or cyclic aliphatic or aromatic C 1 -C 20 group which can be interrupted by -O-, -S-, -CO-O-, -O-CO-, -CO-NR 3 -, -NR 3 -CO-, -O-CO-NR 3 -, -NR 3 -CO-O-or -NR 3 -CO-NR 3 -, Sp in each case independently represents a linear, branched or cyclic aliphatic or aromatic C 1 -C 30 group which can be interrupted by -O-, -S-, -CO-O-, -O-CO-,-CO-NR 3 -, -NR 3 -CO-, -O-CO-NR 3 -, -NR 3 -CO-O- or -NR 3 -CO-NR 3 -, or represents an oligomeric group with a molecular weight of from 200 to 2000 g/mol, T is selected in each case independently from R in each case represents independently H or a C 1 -C 7 alkyl group, U stands for S, V stands for S, W in each case independently is absent or represents CH 2 , O, S or NH, X in each case independently is absent or represents -O-, -S-, -CO-O-, -O-CO-, -CO-NR 3 -, -NR 3 -CO-, -O-CO-NR 3 -, -NR 3 -CO-O- or -NR 3 -CO-NR 3 -, Y in each case independently represents H, R 4 , aryl, heteroaryl, -CN, -OR 4 ,-N(R 4 ) 2 or -P(O)(OR 4 ) 2 , Z in each case independently represents a polymerisable group selected from vinyl groups, CH 2 =CR 1 -CO-O- and CH 2 =CR 1 -CO-NR 2 -, R 1 , R 2 and R 3 in each case independently represent H or a linear or branched C 1 -C 9 alkyl group, R 4 in each case independently represents a linear or branched C 1 -C 9 alkyl group, m can assume the values 2 to 6, n in each case independently can assume the values 1, 2 or 3 and p can assume the values 0 to 10. A represents an m-valent linear, branched or cyclic aliphatic or aromatic C 1 -C 30 group which can be interrupted by -O-, -S-, -CO-O-, -O-CO-, -CO-NR 3 -, -NR 3 -CO-, -O-CO-NR 3 -, -NR 3 -CO-O- or -NR 3 -CO-NR 3 -, or represents an oligomeric group with a molecular weight of from 200 to 2000 g/mol, Q in each case independently is absent or represents an (n+1)-valent linear, branched or cyclic aliphatic or aromatic C 1 -C 20 group which can be interrupted by -O-, -S-, -CO-O-, -O-CO-, -CO-NR 3 -, -NR 3 -CO-, -O-CO-NR 3 -, -NR 3 -CO-O-or -NR 3 -CO-NR 3 -, Sp in each case independently represents a linear, branched or cyclic aliphatic or aromatic C 1 -C 30 group which can be interrupted by -O-, -S-, -CO-O-, -O-CO-,-CO-NR 3 -, -NR 3 -CO-, -O-CO-NR 3 -, -NR 3 -CO-O- or -NR 3 -CO-NR 3 -, or represents an oligomeric group with a molecular weight of from 200 to 2000 g/mol, T is selected in each case independently from R in each case represents independently H or a C 1 -C 7 alkyl group, U stands for S, V stands for S, W in each case independently is absent or represents CH 2 , O, S or NH, X in each case independently is absent or represents -O-, -S-, -CO-O-, -O-CO-, -CO-NR 3 -, -NR 3 -CO-, -O-CO-NR 3 -, -NR 3 -CO-O- or -NR 3 -CO-NR 3 -, Y in each case independently represents H, R 4 , aryl, heteroaryl, -CN, -OR 4 ,-N(R 4 ) 2 or -P(O)(OR 4 ) 2 , Z in each case independently represents a polymerisable group selected from vinyl groups, CH 2 =CR 1 -CO-O- and CH 2 =CR 1 -CO-NR 2 -, R 1 , R 2 and R 3 in each case independently represent H or a linear or branched C 1 -C 9 alkyl group, R 4 in each case independently represents a linear or branched C 1 -C 9 alkyl group, m can assume the values 2 to 6, n in each case independently can assume the values 1, 2 or 3 and p can assume the values 0 to 10. <EOS>