Patent ID: 7585931

Claim:
An optically active high-molecular-weight compound of the following formula wherein, Ar is a benzene ring, R 1 R 2 are, each independently, hydrogen, —CN, an alkyl group, or an ester group, R 3 and R 4 are, each independently, hydrogen, halogen, an alkyl group, carboxyl group, ester group, ether group, —CN or —(C═O)R, n is an integer of 2 to 5000, X is —(CH 2 ) m —, a vinylene group, N, S, O, —NR—or —C(O)—, m is an integer of 0 or 1, R 3 and R 4 may be introduced 2-4 times respectively, wherein these may be identical or different, and R is hydrogen, N, S or O, which compound is optically active.