Patent ID: 7416765
Filing Date: 2008-08-26
Classification: C08F,C08K,C08L,C09K,G02B

Abstract:
1. A polymerizable liquid crystalline composition comprising: (I) a side chain liquid crystalline polymer produced by radical-copolymerizing (A) a (meth)acrylic compound having an optically active portion, represented by formula (1) below and (B) a (meth)acrylic compound having an oxetanyl group represented by formula (2) below; and (II) a photo cation generator and/or a thermal cation generator, the weight ratio of Compound (A) to Compound (B) in the side chain liquid crystalline polymer (I) being within the range of 1:99 to 99:1: wherein R 1 is hydrogen or methyl, C 1 is an optically active site, L 1 , L 2 , and L 3 are each independently a single bond, —O—, —O—CO—, or —CO—O—, M 1 is represented by formula (3), (4), or (5) below, M 2 is represented by formula (6), (7), or (8) below, and m is an integer of 0 to 10, wherein P 1 , P 2 , P 3 , P 4 and P 5 are each independently a group selected from those represented by formulas (9) below, P 6 is a group selected from those represented by formulas (10) below, and L 4 , L 5 , L 6 and L 7 are each independently a single bond, —CH═CH—, —C≡C—, —O—, —O—CO— or —CO—O—, wherein R 2 is hydrogen, an alkyl or alkyloxy group having 1 to 20 carbon atoms, a halogen, or a cyano group; wherein R 3 is hydrogen or methyl, R 4 is hydrogen, methyl or ethyl, L 8 and L 9 are each independently a single bond, —O—, —O—CO—, or —CO—O—, M 3 is represented by formula (11), (12) or (13) below, and p and q are each independently an integer of 0 to 10, wherein P 7 , P 8 , and P 9 are each independently a group selected from those represented by formulas (14), and L 10 and L 11 are each independently a single bond, —CH═CH—, —C≡C—, —O—, —O—CO— or —CO—O—.