Patent ID: 7534370

Claim:
A polymerizable liquid crystal composition containing a polymerizable compound having a mesogen structure comprising the following condensed benzene ring group (A) and the following 6-membered cyclic group (B) bonded to at least one bond in the group (A) directly or via a connecting group —OCO— or —COO—, and a monovalent terminal group bonded to each of both terminals of the mesogen structure, at least one of the terminal groups being a monovalent organic group having a polymerizable moiety, where the condensed benzene ring group (A) is a naphthalenediyl group having bonds at 1-position and at 4- or 5-position, or an anthracenediyl group having bonds at 1- or 9-position and at 4-, 5- or 10-position; and the 6-membered cyclic group (B) is a 1,4-phenylene group, a trans-1,4-cyclohexylene group or a bivalent group having at least two groups selected from these groups bonded directly or via a connecting group, wherein the polymerizable compound is represented by the following formula (1): CH 2 ═CR 1 —COO-J 1 -(E 1 -J 2 ) n -W 1 -J 3 -M-R 2 (1) where R 1 , R 2 , n, J 1 , J 2 , J 3 , E 1 , W 1 and M are as follows: R 1 : a hydrogen atom or a methyl group, R 2 : a C 2-8 alkyl group, n: 0 or 1, J 1 : a single bond, —(CH 2 ) a — or —(CH 2 ) b O— (wherein each of “a” and “b” which are independent of each other, is an integer of from 2 to 8), J 2 , J 3 : each independently a single bond, —OCO— or —COO—, E 1 : a 1,4-phenylene group or a trans-1,4-cyclohexylene group, provided that a hydrogen atom in such a group may be substituted by a chlorine atom, a fluorine atom, a methyl group or a cyano group, W 1 : a naphthalene-1,4-diyl group, a naphthalene-1,5-diyl group, an anthracene-1,4-diyl group, an anthracene-1,5-diyl group, an anthracene-1,10-diyl group, an anthracene-4,9-diyl group, an anthracene-5,9-diyl group or an anthracene-9,10-diyl group, provided that a hydrogen atom in such a group may be substituted by a chlorine atom, a fluorine atom, a methyl group or a cyano group, and M: a group selected from groups represented by the following formulae (a) to (f):