Polymerizable liquid crystalline composition and liquid crystal film made from the composition

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 R1 is hydrogen or methyl, C1 is an optically active site, L1, L2, and L3 are each independently a single bond, —O—, —O—CO—, or —CO—O—, M1 is represented by formula (3), (4), or (5) below, M2 is represented by formula (6), (7), or (8) below, and m is an integer of 0 to 10,
• —P1-L4-P2-L5-P3— (3)
• —P1-L4-P2— (4)
• —P1— (5)
• —P4-L6-P5-L7-P6 (6)
• (7) —P4-L6-P6 (7)
• —P6 (8)
• wherein p1, P2, P3, P4, and P5 are each independently a group selected from those represented by formulas (9) below,
• P6 is a group selected from those represented by formulas (10) below,
• and L4, L5, L6, and L7 are each independently a single bond, —CH═CH—, —C≡C—, —O—, —O—CO— or —CO—O—,
• wherein R2 is hydrogen, an alkyl or alkyloxy group having 1 to 20 carbon atoms, a halogen, or a cyano group;
• wherein R3 is hydrogen or methyl, R4 is hydrogen, methyl or ethyl, L5 and L9 are each independently a single bond, —O—, —O—CO—, or —CO—O—, M3 is represented by formula (11), (12) or (13) below, and p and q are each independently an integer of 0 to 10,
• —P7-L10-P8-L11-P9— (11)
• —P7-L10-P8— (12)
• —P7— (13)
• wherein P7, P8, and P9 are each independently a group selected from those represented by formulas (14),
• and L10 and L11 are each independently a single bond, —CH═CH—, —C≡C—, —O—, —O—CO— or —CO—O—.