Patent ID: 8029695

Claim:
A polymerizable liquid crystal composition comprising: a polymerizable reactive homeotropic alignment liquid crystal mixture; and a primary or secondary amino coupling agent, wherein the primary amino coupling agent is represented by the following Formula 1: R 1 —R 2 —NH 2 [Formula 1 ] wherein R 1 is an alkyl group having 1 to 20 carbon atoms, and in the alkyl group, —CH 3 at an end thereof may be substituted by —NH2, R 2 is a single bond, or an alkylene group having 1 to 20 carbon atoms, and in the alkylene group, 1 to 2 —CH 2 - that are not adjacent to each other may be substituted by —O—, —(O)—, —NH—, —CH═CH—, —CONH—, a cyclo alkylene group having 3 to 8 carbon atoms, or an arylene group having 6 to 10 carbon atoms, and any hydrogen of the arylene group may be substituted by an alkyl group having 1 to 4 carbon atoms; and wherein the secondary amino coupling agent is represented by the following Formula 2 or Formula 3: wherein R 3 and R 6 are each an alkyl group having 1 to 20 carbon atoms, and in the alkyl group, —CH3 at an end thereof may be substituted by —NH 2 or —Si(R′) n (OR″) 3 - n , R′ and R″ may be the same or different from each other and each are an alkylene group having 1 to 8 carbon atoms, and n is an integer of 0 to 2, R 4 and R 5 are each a single bond, or an alkylene group having 1 to 20 carbon atoms, and in the alkylene group, 1 to 2 —CH 2 - that are not adjacent to each other may be substituted by —O—, —C(═O)—, —NH—, —CH═CH—, —CONH—, a cyclo alkylene group having 3 to 8 carbon atoms, or an arylene group having 6 to 10 carbon atoms, and any hydrogen of the arylene group may be substituted by an alkyl group having 1 to 4 carbon atoms, wherein R 7 , R 8 and R 9 are each an alkylene group having 1 to 20 carbon atoms, and in the alkylene group, 1 to 2 —CH 2 - that are not adjacent to each other may be substituted by —O—, —C(═O)—, —NH—, —CH═CH—, —CONH—, a cyclo alkylene group having 3 to 8 carbon atoms, or an arylene group having 6 to 10 carbon atoms, and any hydrogen of the arylene group may be substituted by an alkyl group having 1 to 4 carbon atoms.