Patent ID: 7771616
Filing Date: 2010-08-10
Classification: C08F,C09K

Abstract:
1. A polymerizable liquid crystal compound represented by general formula (1): wherein R 1 and R 2 each independently represent a hydrogen atom, a methyl group or a halogen atom; rings A, B, and C each independently represent a benzene ring, a cyclohexane ring, a cyclohexene ring, a naphthalene ring, a tetrahydronaphthalene ring, a decahydronaphthalene ring, an anthracene ring or a phenanthrene ring, the —CH═ moiety of some of which rings may be substituted with —N═, and the —CH 2 — moiety of some of which rings may be substituted with —S— or —O—; at least one of the rings A, B, and C is a fused ring; X, Y, and Z each independently represent a substituted or unsubstituted alkyl group having 1 to 6 carbon atoms, a substituted or unsubstituted alkoxy group having 1 to 6 carbon atoms, a substituted or unsubstituted alkenyl group having 2 to 6 carbon atoms, a halogen atom, a cyano group, or a group represented by general formula (2): (wherein R 3 represents a hydrogen atom, a methyl group or a halogen atom); L 1 , L 2 , and L 3 each independently represent a single bond, —COO—, —OCO—, —(CH 2 ) h —, —CH═CH—, —(CH 2 ) i O—, —O(CH 2 ) j —, —O(CH 2 ) k O—, —OCOO(CH 2 ) l —, —(CH 2 ) m OCOO—, —(OCH 2 CH 2 ) o —, —(CH 2 CH 2 O) p —, (OCH 2 CH(CH 3 )) q —, —(CH(CH 3 )CH 2 ) r —, —(CH 2 ) s O(CH 2 ) t —, —O(CH 2 ) u —[Si(CH 3 ) 2 O] v —Si(CH 3 ) 2 (CH 2 ) w —, —CH═CHCH 2 O—, —OCH 2 CH═CH—, —CH═CH—COO—, —OCO—CH═CH—, —C≡C—, —(CH 2 ) 2 COO—, —OCO(CH 2 ) 2 —, —CF═CF—, —OCF 2 —, —CF 2 O—, —C≡C—COO—, —OCO—C≡C—, or —O—; part of the carbon atoms of L 1 , L 2 , and L 3 may be replaced with a silicon atom(s); n represents 0 or 1; h, i, j, k, l, m, and n each independently represent an integer of 1 to 8; o, p, q, r, s, t, u, v, and w each independently represent an integer of 1 to 3; a, b, and c represent the numbers of the substituents on the rings A, B, and C, respectively, being an integer of (2d+2) or smaller, where d is the number of the 6-membered rings contained in the monocyclic or fused rings A, B, and C, respectively; when n=0, at least one of a and b is 1 or greater; and when n=1, at least one of a, b, and c is 1 or greater.