Patent ID: 8293134

Claim:
An optically anisotropic material obtainable by polymerizing a polymerizable liquid crystal composition comprising at least 5 mol % of at least one polymerizable compound represented by the following formula (1): CH 2 ═CR 1 —COO—K-Cy-Cy-L-OCO—CR 2 ═CH 2 (1); wherein R 1 and R 2 are each independently a hydrogen atom or a methyl group; K is —(CH 2 ) p COO— or —(CH 2 ) q OCO—, wherein an etheric oxygen atom may be present in a carbon to carbon bond in an alkylene group and some or all of hydrogen atoms may be substituted by a fluorine atom or a methyl group (where p and q each independently represents an integer of from 1 to 12); L is —OCO(CH 2 ) r — or —COO(CH 2 ) s —, wherein an etheric oxygen atom may be present in a carbon to carbon bond in an alkylene group and some or all of hydrogen atoms may be substituted by a fluorine atom or a methyl group (where r and s each independently represents an integer of from 1 to 12); and Cy is a trans-1,4-cyclohexylene group wherein some or all of hydrogen atoms may be substituted by a fluorine atom or a methyl group.