申请人:Ciba Specialty Chemicals Corporation
公开号:US05969154A1
公开(公告)日:1999-10-19
A liquid crystalline compound of formula ##STR1## wherein B and D are each independently of the other C.sub.6 -C.sub.24 alkyl, ##STR2## L is ##STR3## methyl or C.sub.10 -C.sub.18 alkyl, wherein R.sub.1 is C.sub.4 -C.sub.18 alkyl, with the proviso that when L is methyl, at least one of B and D is C.sub.6 -C.sub.24 alkyl; R2 is hydrogen, C.sub.1 -C.sub.4 alkyl, C.sub.1 -C.sub.4 alkoxy, halogen, cyano or nitro, R3, R4 and R5 are each independently of one another hydrogen, OR6, SR6, SeR6, --NHR6, --NR6R7, ##STR4## with the proviso that at least one of R3, R4 and R5 is not hydrogen, R6 is C.sub.7 -C.sub.37 alkyl, C.sub.7 -C.sub.37 alkylene or C.sub.5 -C.sub.18 alkyl which is interrupted by 1 to 6 hetero atoms selected from the group consisting of O, S and N, R7 is hydrogen or R9, R8 is hydrogen or C.sub.1 -C.sub.4 alkyl, and R9 is C.sub.1 -C.sub.12 alkyl, C.sub.2 -C.sub.12 alkylene or C.sub.3 -C.sub.12 alkyl which is interrupted by 1 to 6 hetero atoms selected from the group consisting of O, S and N.
一种公式为##STR1##的液晶化合物,其中B和D分别独立于对方且为C.sub.6 -C.sub.24烷基,##STR2## L为##STR3## 甲基或C.sub.10 -C.sub.18烷基,其中R.sub.1为C.sub.4 -C.sub.18烷基,但是当L为甲基时,至少有一个B和D为C.sub.6 -C.sub.24烷基;R2为氢、C.sub.1 -C.sub.4烷基、C.sub.1 -C.sub.4烷氧基、卤素、氰基或硝基,R3、R4和R5分别独立于对方且为氢、OR6、SR6、SeR6、--NHR6、--NR6R7、##STR4## 但是至少有一个R3、R4和R5不是氢,R6为C.sub.7 -C.sub.37烷基、C.sub.7 -C.sub.37烷基烯或C.sub.5 -C.sub.18烷基,其中被1至6个来自O、S和N的杂原子中断,R7为氢或R9,R8为氢或C.sub.1 -C.sub.4烷基,R9为C.sub.1 -C.sub.12烷基、C.sub.2 -C.sub.12烷基烯或C.sub.3 -C.sub.12烷基,其中被1至6个来自O、S和N的杂原子中断。