Patent ID: 8361345

Claim:
A compound represented by formula (I): where P 1 and P 2 each independently represent a polymerizable group; m1 and m2 each independently represent an integer of from 1 to 10, and one CH 2 or two or more CH 2 , which may be not adjacent to each other, in —(CH 2 ) m1 — and —(CH 2 ) m2 — may be replaced with —O— or —S—; “A” represents a divalent group having a 5- to 18-membered aromatic hydrocarbon ring or a 5- to 18-membered aromatic hetero ring, in which at least one hydrogen atom may be replaced with a C 1-4 alkyl group, C 1-4 alkoxy group or halogen atom; L 3 and L 4 each independently represent a C 1-10 alkyl group or a C 1-10 alkoxy group, k1 and k2 each independently represent an integer of from 0 to 4; X 1 , X 2 , X 3 and X 4 each independently represent —O—, —S—, —NH—, —NR— or —SiR 0 R 00 —, R, R 0 and R 00 each independently represent a C 1-10 alkyl group; n1 and n2 each independently represent 0 or 1, provided that at least one of them is 1; and L 1a , L 1b , L 2a and L 2b each independently represent a hydrogen atom, halogen atom, —CN, —NC, —NCO, —NCS, or —OCN, provided that those in which both of X 2 and X 3 represent —O—, those in which one of X 2 and X 3 represents —O— and another represents —NH— or —NR— are excluded only when n1 is 1, both of L 1a and L 1b are hydrogen atoms, n2 is 1, and both of L 2a and L 2b are hydrogen atoms, or only when n1 is 1, both of L 1a and L 1b are hydrogen atoms, and n2 is 0.