Patent ID: 6692797
Filing Date: 2004-02-17
Classification: C07C,C07D,C09K,G02F

Abstract:
A compound of Formula I: whereinX1-8 are each independently selected from: H, halogen, CN, OH, straight or branched chain alkyl having from 1 to 16 carbon atoms, where one or more non-adjacent CH2 groups may be substituted by CH(CN), CH(CF3), CHF, CHCl, CH(CH3); S1-8 are spacer units; PG1-4 are photopolymerisable/dimerisable groups; m1, m2, m3, and m4 are each independently selected from the integers 1 and 0; A1-8 are each independently selected from the aromatic rings: where Ëœ indicates a sigma bond between part of the molecule shown in formula I and a carbon atom at any position in one of the aromatic rings;and where the CH groups present in the aromatic rings may each be independently substituted by C(CN), C(CF3), C-halogen, C(CH3), CR, where R is selected from straight or branched chain alkyl and may include from 1 to 8 carbon atoms and including where one or more non-adjacent CH2 groups may be substituted by CH(CN), CH(CF3), CHF, CHCl, CH(CH3).