Polymerizable composition, polymer, and film

A polymer produced by polymerizing a polymerizable composition containing at least one compound represented by the following formula (A):

• wherein P1 and P2 each represents a polymerizable group selected from the groups represented by the following formulae (P-1) to (P-5):
• wherein R11 to R13 each represents a hydrogen atom or a methyl group;
• m1 and m2 each indicates an integer of from 2 to 8, and of m1 or m2 CH2's, one CH2 or two or more CH2's not adjacent to each other may be replaced by an oxygen atom or a sulfur atom;
• n1 is 0, 1 or 2;
• n2 is 1 or 2;
• A1, A2, A3 and A4 each represents a substituted or unsubstituted, 5- to 18-membered aromatic hydrocarbon ring or 5- to 18-membered aromatic hetero ring residue;
• R represents a hydrogen atom or an alkyl group having from 1 to 4 carbon atoms, however, when n1 is 1 or 2, R may be an alkyl group having from 5 to 8 carbon atoms;
• Z1 and Z2 each represents —COO—, —OCO—, —NHCO— or —NR1CO—, and R1 represents an alkyl group having from 1 to 10 carbon atoms, however, when n1 is 0, Z2 may be —OCO—CH═CH—;
• L1 and L2 each represents —O—, —S—, —COO—, —OCO—, —OCOO—, —NHCO— or —NR1CO, and R1 represents an alkyl group having from 1 to 10 carbon atoms, however, when n1 is 0, L1 and L2 each may be —OCO—CH═CH—.

A film containing at least one polymer produced by polymerizing a polymerizable composition containing at least one compound represented by the following formula (A):

• wherein P1 and P2 each represents a polymerizable group selected from the groups represented by the following formulae (P-1) to (P-5):
• wherein R11 to R13 each represents a hydrogen atom or a methyl group;
• m1 and m2 each indicates an integer of from 2 to 8, and of m1 or m2 CH2's, one CH2 or two or more CH2's not adjacent to each other may be replaced by an oxygen atom or a sulfur atom;
• n1 is 0, 1 or 2;
• n2 is 1 or 2;
• A1, A2, A3 and A4 each represents a substituted or unsubstituted, 5- to 18-membered aromatic hydrocarbon ring or 5- to 18-membered aromatic hetero ring residue;
• R represents a hydrogen atom or an alkyl group having from 1 to 4 carbon atoms, however, when n1 is 1 or 2, R may be an alkyl group having from 5 to 8 carbon atoms;
• Z1 and Z2 each represents —COO—, —OCO—, —NHCO— or —NR1CO—, and R1 represents an alkyl group having from 1 to 10 carbon atoms, however, when n1 is 0, Z2 may be —OCO—CH═CH—;
• L1 and L2 each represents —O—, —S—, —COO—, —OCO—, —OCOO—, —NHCO— or —NR1CO, and R1 represents an alkyl group having from 1 to 10 carbon atoms, however, when n1 is 0, L1 and L2 each may be —OCO—CH═CH—.