申请人:Chisso Corporation
公开号:US04973426A1
公开(公告)日:1990-11-27
An optically active compound having particularly a specific feature of increasing spontaneous polarization value as one of important specific features for ferroelectric liquid crystal compositions, and a ferroelectric liquid crystal composition containing the compound are provided, which compound is expressed by the formula ##STR1## wherein R.sup.1 represents a linear or branched chain alkyl, alkoxy, alkanoyl, alkoxycarbonyl or alkoxycarbonyloxy each of 1 -15C, H, halogen or -CN; R.sup.2 represents an optically active group having 2-20 skeletal atoms, ##STR2## wherein X represents H, halogen or -CN; l represents an integer of 1-10; m is 0 or 1; and * indicates asymmetric C.
提供一种具有特定特征的光学活性化合物,其中增加自发极化值是铁电液晶组成中的重要特征之一,以及含有该化合物的铁电液晶组成物。该化合物由以下公式表示:##STR1##其中R1代表1-15C的线性或支链烷基、烷氧基、烷酰基、烷氧羰基或烷氧羰氧基,H,卤素或-CN;R2代表具有2-20个骨架原子的光学活性基团,##STR2##其中X代表H,卤素或-CN;l表示1-10的整数;m为0或1;*表示不对称的C。