Patent ID: 7541071
Filing Date: 2009-06-02
Classification: C09K

Abstract:
1. A compound represented by Formula (1a) or Formula (1b): wherein R 1 is hydrogen, fluorine, chlorine, —CN, —NCO, —NCS, —CF 3 , —OCF 3 , —OCHF 2 , or alkyl having 1 to 20 carbon atoms, any —CH 2 — in the alkyl may be replaced by —O—, —S—, —COO—, —OCO—, —CO—, —CH═CH— or —C≡C—, any hydrogen in the alkyl may be replaced by halogen, cyano or methyl; when R 1 is alkyl having 1 to 20 carbon atoms and when any hydrogen in the alkyl is replaced by halogen, cyano or methyl, then R 1 may be an optically-active group; Y 1 and Y 2 are independently alkylene having 1 to 15 carbon atoms, any —CH 2 — in the alkylene may be replaced by —O—, —S—, —COO—, —OCO— or —CO—, any hydrogen in the alkylene may be replaced by halogen, cyano or methyl, and when any hydrogen in the alkylene is replaced by halogen, cyano or methyl, then Y 1 or Y 2 may be an optically-active group; A 1 and A 2 are independently 1,4-cyclohexylene, 1,4-cyclohexenylene, 1,4-phenylene, pyridine-2,5-diyl, pyridazine-3,6-diyl, pyrimidine-2,5-diyl, naphthalene-2,6-diyl, tetrahydronaphthalene-2,6-diyl, biphenyl-4,4′-diyl, 1,3-dioxane-2,5-diyl, 1,4-cyclohexylene in which at least one hydrogen is replaced by fluorine, or 1,4-phenylene in which at least one hydrogen is replaced by halogen, —CN, —CH 3 , —CH 2 CH 3 , —OCH 3 , —OH, —CHO, —OCOCH 3 , —COCH 3 , —COCF 3 , —CF 3 or —CF 2 H; B 1 is 1,4-cyclohexylene, 1,4-phenylene, naphthalene-2,6-diyl, tetrahydronaphthalene-2,6-diyl, biphenyl-4,4′-diyl, fluorene-2,7-diyl, 9-methylfluorene-2,7-diyl, 9-ethylfluorene-2,7-diyl, 9,9-dimethylfluorene-2,7-diyl, 9-chlorofluorene-2,7-diyl, 9,9-difluorofluorene-2,7-diyl, anthracene-2,7-diyl, anthracene-5,10-diyl, phenanthrene-2,7-diyl, pentacene-2,8-diyl, pyridazine-3,6-diyl, 1,4-phenylene in which at least one hydrogen is replaced by halogen, —CH 3 , —CH 2 CH 3 , —OCH 3 , —OCH 2 CH 3 , —CN, —COCH 3 , —OCOCH 3 , —CHO, —OH, —COCF 3 , —CF 3 , phenyl or toluyl, or a group represented by any one of Formula (K1) to Formula (K3); X 1 and X 2 are independently a single bond, —O—, —S—, —COO— or —OCO—; X 3 and X 4 are independently a single bond, —COO—, —OCO—, —OCH 2 —, —CH 2 O—, —OCF 2 —, —CF 2 O—, —CH 2 CH 2 —, —CH═CH—COO— or —C≡C—; m is 0, 1 or 2, when m is 2, then two X 1 's and two A 1 's both may be the same group or different groups; P 1 and P 2 are independently a group represented by any one of Formula (P1) to Formula (P4); when X 3 is a single bond and A 2 and B 1 are 1,4-phenylene or 1,4-phenylene in which any hydrogen is replaced by methyl, ethyl or halogen, then X 4 is —COO—, —OCO—, —OCH 2 —, —CH 2 O—, —OCF 2 —, —CF 2 O—, —CH 2 CH 2 —, —CH═CH—COO— or —C≡C—; with the proviso that in Formula (1b), when P 1 =P 2 =Formula (P1) or Formula (P2), X 3 ═X 2 =a single bond, m=0,B1=A2=1,4-phenylene, and X 4 =—COO—, then Y 1 is not —O—: