Patent ID: 8404864
Filing Date: 2013-03-26
Classification: C07D,C09B,H01L,Y02E

Abstract:
1. A compound of the formula I wherein R 1 and R 2 are independently of each other an aliphatic, cycloaliphatic, cycloaliphatic-aliphatic, aromatic, aromatic-aliphatic, heteroaromatic or heteroaromatic-aliphatic group having up to 49 carbon atoms, a and d independently of each other are 0, 1, 2 or 3, Ar wherein R p represents 0, 1, or 2, R b, c, e, and f independently of each other represent 1, 2 or 3, Ar wherein R R a) an aliphatic hydrocarbon group having up to 18 carbon atoms, b) C c) C (XIV) wherein R wherein R represents an aliphatic hydrocarbon group having up to 12 carbon atoms, or two groups R