申请人:The Secretary of State for for Defence in Her Britannic Majesty's
公开号:US05156763A1
公开(公告)日:1992-10-20
Laterally fluorinated 4-cyanophenyl and 4'-cyanobiphenyl benzoates are diosed of general formula I: ##STR1## in which R is R.sup.1 or R.sup.1 O, wherein R.sup.1 is C.sub.1 -C.sub.12 alkyl, m and n are 0 or 1 provided that (n+m) is 0 or 1, each of a, b, c and d are independently 0 or 1, provided (a+b+c+d) is not zero, but excluding the case where a and b are 0 and one of c and d is 0, being useful constituents of nematic liquid crystal materials.
侧向氟代的4-氰基苯基和4'-氰基联苯基苯甲酸酯是一般式I的二聚体:##STR1## 其中R是R.sup.1或R.sup.1 O,其中R.sup.1是C.sub.1-C.sub.12烷基,m和n为0或1,前提是(n+m)为0或1,a、b、c和d中的每一个都是独立的0或1,前提是(a+b+c+d)不为零,但不包括a和b为0和c和d中的一个为0的情况,是向列相液晶材料中有用的组分。