Patent ID: 7247355
Filing Date: 2007-07-24
Classification: C09K

Abstract:
1. A compound represented by formula (1): where R a is hydrogen or C 1 -C 20 alkyl (any —CH 2 — of which may be replaced by —O—, —CH═CH— or —C≡C—); R b is halogen, —CN, C 1 -C 20 alkyl (at least one hydrogen of which is replaced by halogen), C 2 -C 20 alkenyl (at least one hydrogen of which may be replaced by halogen), or C 1 -C 20 alkoxy (at least one hydrogen of which may be replaced by halogen); each of A 1 , A 2 , A 3 and A 4 is independently 1,4-cyclohexylene, 1,4-cyclohexenylene, or 1,4-phenylene (any —CH 2 — of which may be replaced by —O— or —S—, any —CH═ of which may be replaced by —N═ and any hydrogen of which may be replaced by halogen, methyl or —CF 3 ); each of Z 1 , Z 2 , Z 3 and Z 4 is independently a single bond, or C 1 -C 4 alkylene (any —CH 2 — of which may be replaced by —O—, —S—, —CH═CH—, —CF═CF— or —C≡C— and any hydrogen of C 1 -C 4 alkylene may be replaced by halogen); each of h, k, m and n is independently 0, 1 or 2, the sum of h, k, m and n being 1, 2 or 3; and Q is any one of the groups represented by formulas (q1), (q2) and (q3): where X 1 is hydrogen or halogen; and each of Y 1 , Y 2 , Y 3 , Y 4 and Y 5 is independently hydrogen, halogen or methyl.