申请人:——
公开号:US20040167361A1
公开(公告)日:2004-08-26
The invention relates to CF
2
O-bridged cyclohexane derivatives, in particular compounds of formula (I), R1-(-A1-Z1-)k1-Q-CF2O-A2-(-Z3-A3-)K3-R2, wherein Q represents group (a); W
1
, W
2
represent —CH
2
— and/or —O— independendy from each other, X
1
, X
2
, X
3
, X
4
represent H, F, —CH
3
—CH
2
F—CH
2
F and/or —CF
3
independently from each other, provided that at least one substituent X
1
, X
2
, X
3
and/or X
4
does not represent H, Z
2
represents a simple bond, —CH
2
—CH
2
— or —CF
2
—CF
2
—, m represents 0 or 1 and R
1
, R
2
, A
1
, A
2
, A
3
, Z
1
, Z
3
, k1 and k3 have the meaning cited in the description. The invention further relates to liquid criystal substances such as optical and electro-optical display elements.
本发明涉及 CF
2
O 键环己烷衍生物,特别是式 (I) 的化合物,R1-(-A1-Z1-)k1-Q-CF2O-A2-(-Z3-A3-)K3-R2,其中 Q 代表基团 (a);W
1
, W
2
代表-CH
2
- 和/或-O-,X
1
, X
2
, X
3
, X
4
代表 H、F、-CH
3
-CH
2
F-CH
2
F 和/或-CF
3
只要至少一个取代基 X
1
, X
2
, X
3
和/或 X
4
不代表 H、Z
2
代表单键,-CH
2
-CH
2
- 或 -CF
2
-CF
2
-,m 代表 0 或 1,R
1
, R
2
, A
1
, A
2
, A
3
, Z
1
, Z
3
k1 和 k3 具有说明中引用的含义。本发明还涉及液态晶体物质,如光学和电子光学显示元件。