Patent ID: 7758931
Filing Date: 2010-07-20
Classification: C07C,C09K

Abstract:
1. A liquid crystal compound represented by one of formulas (b) to (d): wherein Ra and Rb are independently hydrogen or linear alkyl having 1 to 10 carbons, provided that in the alkyl, —CH 2 — may be replaced by —O—, —(CH 2 ) 2 — may be replaced by —CH═CH—; rings A 1 , A 2 and B are independently trans-1,4-cyclohexylene or 1,4-phenylene, ring C is 1,4-phenylene; Z 11 , Z 12 , Z 2 and Z 3 are independently a single bond or alkylene having 2 or 4 carbons, provided that in the alkylene, —CH 2 — may be replaced by —O— and —(CH 2 ) 2 — may be replaced by —CH═CH—; and X 1 is chlorine, and X 2 is flourine, provided that: in a case where: in formula (b), rings A in formula (c), ring A and in formula (d), rings A Rb is one of linear alkoxy having 1 to 9 carbons, linear alkoxyalkyl having 2 to 9 carbons, linear alkenyl having 2 to 10 carbons, and linear alkenyloxy having 2 to 9 carbons, and in formula (b), ring A Rb is one of linear alkyl having 1 to 10 carbons, linear alkenyl having 2 to 10 carbons, and linear alkenyloxy having 2 to 9 carbons.