申请人:Merck Patent GmbH
公开号:US04349452A1
公开(公告)日:1982-09-14
Anisotropic compounds of the formula (1) ##STR1## wherein X and Y are each hydrogen, C.sub.1 -C.sub.12 alkyl, C.sub.1 -C.sub.12 alkoxy, N-monoalkaylamine having 1 to 12 carbon atoms in the alkyl group, halogen, cyano, nitro, or a cyclic radical of the formula ##STR2## wherein R is hydrogen, halogen, cyano, nitro, C.sub.1 -C.sub.12 alkyl, or C.sub.1 -C.sub.12 alkoxy, Z.sup.1 is a --COO-- group or a --OOC-- group and Z.sup.2 may be the same as Z.sup.1 or a single convalent bond, with the proviso that: (a) only one of the groups X and Y is a cyclic radical, and (b) neither of the groups X or Y is hydrogen, bromine, or poperidino when the other is hydrogen, have low .DELTA.n-values without a greay tendency to form smectic phases and are useful in preparing liquid crystal devices.
化学式(1)的各向异性化合物##STR1##其中X和Y分别为氢、C.sub.1 -C.sub.12烷基、C.sub.1 -C.sub.12烷氧基、具有1到12个碳原子的烷基基团的N-单烷基胺、卤素、氰基、硝基,或者具有如下结构的环状基团##STR2##其中R为氢、卤素、氰基、硝基、C.sub.1 -C.sub.12烷基或C.sub.1 -C.sub.12烷氧基,Z.sup.1是一个--COO--基团或一个--OOC--基团,Z.sup.2可能与Z.sup.1相同或为单一共价键,条件是:(a)X和Y中仅有一个是环状基团,(b)当另一个为氢时,X或Y中的任何一个都不是氢、溴或哌啶基,具有低.DELTA.n值,且没有形成薄板相的倾向,适用于制备液晶器件。