| abstract |
Polymers comprising repeating units of the formula I n nwhere the variables are defined as follows: a is an integer from 0 to 3, n R 1 , R 2 , R 3 are identical or different and are selected independently from among hydrogen, C 1 -C 20 -alkyl, C 1 -C 20 -alkyl containing one or more Si, N, P, O or S atoms, C 6 -C 30 -aryl, preferably C 6 -C 14 -aryl, C 4 -C 14 -heteroaryl, —N(C 6 -C 14 -aryl) 2 , and Y 1 , where Y 1 may be identical or different and are selected from among —CH═CH 2 , trans- or cis-CH═CH—C 6 H 5 , acryloyl, methacryloyl, methylstyryl, O—CH═CH 2 and glycidyl, n n nwhere Y 2 is selected from among —CH═CH 2 , trans- or cis-CH═CH—C 6 H 5 , acryloyl, methacryloyl, methylstyryl, —O—CH═CH 2 and glycidyl, and one or more groups Y 1 or Y 2 may be crosslinked to one another. |