Patent ID: 9620716
Date: 2017-04-11
CPC Classifications: C07D,C08G,C08K,C08L,H01L,Y02E

Claim:
1. A polymer comprising ten or more repeating units of formula I wherein W X R Y R one or more units of formula II wherein U is a unit of formula I Ar R R P is a polymerizable or crosslinkable group, Sp is a spacer group or a single bond, X a, b, c are on each occurrence identically or differently 0, 1 or 2, with the proviso that b=d=1 and a=c=0, or a=b=c=d=1, or a=b=d=1 and c=0, or a=b=c=1 and d=0, or a=c=2, b=1 and d=0, or a=c=2 and b=d=1.