Patent ID: 8335148

Claim:
A polymerizable compound represented by the following formula (1): wherein A is a hydrogen atom or a group selected from the following formulae (2) to (5): V w H (3-W) C— (2) Ph x Y (3-x) Si— (3) J-(CH 2 ) m1 —CH l (CH 3 ) (2-l) — (4) J-(CH 2 ) n1 —SiPh p1 (CH 3 ) (2-p1) — (5); B is a group selected from the following formulae (6) and (7): J-(CH 2 ) m2 —CH k (CH 3 ) (2-k) — (6) J-(CH 2 ) n2 —SiPh p2 (CH 3 ) (2-p2) — (7); w is an integer of from 0 to 3; V is a methyl group or an ethyl group, provided that when w is from 2 to 3, a plurality of V's may be different groups, x is an integer of from 0 to 3, Y is a group selected from a methyl group, a cyclohexyl group, a tert-butyl group, a sec-butyl group and an isopropyl group, provided that when x is 0 or 1, a plurality of Y's may be different groups, J is a group selected from CH 2 ═CR—COO—, an epoxy group, a vinyl group and a vinyl ether group, R is a hydrogen atom or a methyl group, I is an integer of from 0 to 1, k is an integer of from 0 to 2, provided that when A is a hydrogen atom, k is not 2, each of m 1 and m 2 which are independent of each other, is from 0 to 12, each of n 1 and n 2 which are independent of each other, is from 1 to 12, and each of p 1 and p 2 which are independent of each other, is from 0 to 2; provided that some or all of hydrogen atoms in the substituent V in the formula (2), the phenyl group and the substituent Y in the formula (3) and the alkylene group in the formulae (4) to (7) may be substituted by a methyl group, a methoxy group or a fluorine atom, and some or all of hydrogen atoms in the biphenyl group or the biphenylene group may be substituted by a methyl group, a methoxy group or a fluorine atom.