Patent ID: 9559303
Date: 2017-01-31
CPC Classifications: C08G,H01L,Y02E,Y02P

Claim:
1. Polymer of formula II wherein U is on each occurrence identically or differently a moiety of formula I, wherein an asterisk indicates a link to a neighboured group, and R Ar x is on each occurrence identically or differently 0, 1 or 2, wherein in at least one repeating unit, i.e. in at least one unit —[(Ar y is on each occurrence identically or differently 1 or 2, n is an integer >1, Ar R R P is a polymerisable or crosslinkable group, Sp is a single bond or is alkylene with up to 30 C atoms which is unsubstituted or mono- or polysubstituted by F, Cl, Br, I or CN, it being also possible for one or more non-adjacent CH X