Patent ID: 8221906
Filing Date: 2012-07-17
Classification: C08G,C09B,C09K,H01L,H05B,Y02E,Y10S

Abstract:
1. A polymer comprising a repeating unit(s) of the formula wherein R R R R  wherein R R R R X is O, S, or NR or two substituents R  or two substituents R  wherein X R R R R D is —CO—; —COO—; —S—; —SO—; —SO E is —OR R R R R R R wherein Sp is a spacer unit, HEI is a group (HEI HEI  wherein BU is a bridging unit selected from  wherein R R R R m can be the same or different at each occurence and is 0, 1, 2, or 3; n can be the same or different at each occurence and is 0, 1, 2, or 3; A A  or A R R R R R R D is —CO—, —COO—, —S—, —SO—, —SO E is —OR G is E, or C R R R R R R HEI  wherein X HEI  wherein X R two or more groups R o is 1, 2, or 3, u is 1, 2, 3, or 4, A R x1 is 0, or 1, with the proviso that the polymers are excluded.