申请人:Showa Shell Sekiyu Kabushiki Kaisha
公开号:EP0445037A2
公开(公告)日:1991-09-04
An optically active liquid crystal compound which is represented by the formula :
wherein R1 and R2 each represents an alkyl or aralkyl group of 4 - 18 carbon atoms, R3 represents a haloalkyl group, X represents O, COO, OCO, CO or a single bond, Y represents COO, OCO, CH20 or OCH2, Z represents COO or 0, (A) represents a cydic group shown by
or
(B) represents a cydic group shown by
and ℓ shows that the cydic groups are substituted by at least one halogen atom.
一种光学活性液晶化合物,由式:
其中 R1 和 R2 分别代表 4 - 18 个碳原子的烷基或芳烷基,R3 代表卤代烷基,X 代表 O、COO、OCO、CO 或单键,Y 代表 COO、OCO、CH20 或 OCH2,Z 代表 COO 或 0,(A) 代表由以下式子表示的二元酸基团
或
(B) 代表以下所示的二烷基
和 ℓ 表示被至少一个卤素原子取代的二烷基。