Patent ID: 8603357

Claim:
A polymerizable chiral compound represented by the following formula (I): wherein Y1 to Y8 are each independently a chemical single bond, —O—, —S—, —O—C(═O)—, —C(═O)—O—, —O—C(═O)—O—, —NR 1 —C(═O)—, —C(═O)—NR 1 —, —O—C(═O)—NR 1 —, —NR 1 —C(═O)—O—, —NR 1 —C(═O)—NR 1 —, —O—NR 1 — or —NR 1 —O—, and R 1 is a hydrogen atom or an alkyl group having 1 to 6 carbon atoms; wherein G1 and G2 are each independently a divalent aliphatic group having 1 to 20 carbon atoms, which may have a substituent; the aliphatic group may contain —O—, —S—, —O—C(═O)—, —C(═O)—O—, —O—C(═O)—O—, —NR 2 —C(═O)—, —C(═O)—NR 2 —, —NR 2 — or —C(═O)— unless two or more —O— are adjacent as well as two or more —S—; R 2 is a hydrogen atom or an alkyl group having 1 to 6 carbon atoms; and Z1 and Z2 are each independently an alkenyl group having 2 to 10 carbon atoms, which may be substituted by a halogen atom; wherein Q 1 to Q 4 are each independently a hydrogen atom or an alkyl group having 1 to 6 carbon atoms, which may have a substituent; wherein A1 to A6 are each independently a divalent aromatic group A having 6 to 30 carbon atoms; wherein X is any of groups represented by the following (X-i) to (X-vi): wherein * represents a bond; L 1 to L 4 are each independently an alkyl group having 1 to 4 carbon atoms, an alkoxy group having 1 to 4 carbon atoms, a halogen atom, —COOR 3 , —OCOR 3 , —OCOOR 3 , —CONHR 3 or NHCOR 3 ; and R 3 is a hydrogen atom or an alkyl group having 1 to 6 carbon atoms; and wherein, in the formula (I), a and b are each independently 0 or 1.