申请人:Clariant GmbH
公开号:US20030072894A1
公开(公告)日:2003-04-17
Compounds of the formula (I)
1
in which:
R
1
is H, F, CF
3
, OCF
3
, OCF
2
H, OCFH
2
, an alkyl radical or an alkenyl radical;
R
2
is H, an alkyl radical or alkyloxy radical or an alkenyl or alkenyloxy radical;
G
2
—G
1
is —CH═CH—, —CH
2
CH
2
—, —CF═CH—, —CH═CF—, —CF═CF—, —CH
2
—, —CF
2
—;
M
1
, M
2
are each, independently of one another, —C(═O)O—, —OC(═O)—, —CH
2
O—, —OCH
2
—, —OCF
2
—, —CF
2
O—, —C≡C—, —CH
2
CH
2
—, —CF
2
CF
2
— or a single bond;
A
1
, A
2
are each, independently of one another, phenylene-1,4-diyl, unsubstituted, monosubstituted or disubstituted by F, cyclohexane-1,4-diyl, 1,3-dioxan-2,5-diyl;
m, n are each, independently of one another, zero or 1; m+n=0 or 1;
The invention furthermore provides a liquid-crystal mixture comprising one or more compounds of the formula (I) in an amount of 1 to 40% by weight, based on the liquid-crystal mixture and liquid-crystal displays containing this liquid-crystal mixture.
式(I)化合物
1
其中
R
1
是 H、F、CF
3
、OCF
3
OCF
2
H、OCFH
2
烷基或烯基;
R
2
是 H、烷基或烷氧基或烯基或烯氧基;
G
2
-G
1
是-CH═CH-、-CH
2
CH
2
-,-CF═CH-,-CH═CF-,-CF═CF-,-CH
2
-、-CF
2
-;
M
1
, M
2
各自独立地为-C(═O)O-、-OC(═O)-、-CH
2
O-、-OCH
2
-、-OCF
2
-、-CF
2
O-、-C≡C-、-CH
2
CH
2
-、-CF
2
CF
2
- 或单键;
A
1
, A
2
各自独立地为未被 F 取代、被 F 单取代或被 F 二取代的苯基-1,4-二基、环己烷-1,4-二基、1,3-二噁烷-2,5-二基;
m、n 各自独立地为 0 或 1;m+n=0 或 1;
本发明还提供了一种液晶混合物,其中包含一种或多种式(I)化合物,其含量为液晶混合物重量的 1% 至 40%,以及含有该液晶混合物的液晶显示器。