Patent ID: 7790057
Filing Date: 2010-09-07
Classification: C07C,C07D,C08G,C09K,H01L,H05B,Y02E,Y10S

Abstract:
1. A polymer containing units of the formula (I) in which R is on each occurrence, identically or differently, H, a straight-chain alkyl chain having 1 to 40 C atoms, a branched alkyl chain having 3 to 40 C atoms or a cyclic alkyl chain having 3 to 40 C atoms, each of which is optionally substituted by R R R X is on each occurrence, identically or differently, B, C, N, O, P, S, Se, P═O, S═O or SO n is on each occurrence, identically or differently, 0, 1, 2 or 3; m is on each occurrence, identically or differently, 0, 1 or 2; and the dashed bond denotes the link in the polymer and with the proviso that if X is O then there are no Rs present and if X is N or B, then there is only one R present and if X is S or P═O then there can be no Rs present.