US 5,779,936 A · Liquid crystalline compound and liquid crystal composition containing the same

Abstract

A liquid crystalline compound expressed by the general formula (1) ##STR1## (wherein R.sub.1 is an alkyl group having 1 to 12 carbon atoms and one CH.sub.2 group in the alkyl group may be replaced by oxygen atom or --CH.dbd.CH--; X represents hydrogen atom or fluorine atom; Y represents hydrogen atom or alkoxy group having 1 to 5 carbon atoms; l and m independently represent 0 or 1, respectively; and n and p independently represent an integer of 0 to 10, respectively, and when p is 0, n is 1 or more, and when Y is an alkoxy group, X is a fluorine atom and p is 0.) Liquid crystal compositions which are suitable for use in liquid crystal display devices, have a high clearing point, and have a function of decreasing viscosity, and novel liquid crystalline compounds useful as a component of the liquid crystal compositions are provided.

Claims16

Dependent claims

A liquid crystalline compound expressed by the general formula (1) ##STR20## wherein R.sub.1 is an alkyl group having 1 to 12 carbon atoms and one CH.sub.2 group in the alkyl group may be replaced by oxygen atom or --CH.dbd.CH--;

X represents hydrogen atom or fluorine atom;
Y represents hydrogen atom or alkoxy group having 1 to 5 carbon atoms;
l and m independently represent 0 or 1, respectively;
and n and p independently represent an integer of 0 to 10, respectively, and when p is 0, n is 2 or more, and when Y is an alkoxy group, X is fluorine atom and p is 0, provided that in no case X is fluorine atom, p is 0, and Y is hydrogen atom when m is 0.

1 more element

A liquid crystalline compound expressed by the general formula (1) ##STR21## wherein R.sub.1 is an alkyl group having 1 to 12 carbon atoms and one CH.sub.2 group in the alkyl group may be replaced by oxygen atom or --CH.dbd.CH--;

X represents a fluorine atom;
Y represents an alkoxy group having 1 to 5 carbon atoms;
l and m independently represent 0 or 1, respectively;
n represents an integer of 2 to 10;
and p is 0.

2 more elements

A liquid crystalline compound expressed by general formula (1) ##STR22## wherein R.sub.1 is an alkyl group having 1 to 12 carbon atoms and one CH.sub.2 group in the alkyl group may be replaced by oxygen atom or --CH.dbd.CH--;

X represents a hydrogen atom or flourine atom;
Y represents a hydrogen atom or an alkoxy group having 1 to 5 carbon atoms;
l represents 0 or 1;
m is 0;
n represent an integer of 0 to 10;
and p is 1.

3 more elements

A liquid crystalline compound expressed by the general formula (1) ##STR23## wherein R.sub.1 is an alkyl group having 1 to 12 carbon atoms and one CH.sub.2 group in the alkyl group may be replaced by oxygen atom or --CH.dbd.CH--;

X represents a hydrogen atom or fluorine atom;
Y represents a hydrogen atom or an alkoxy group having 1 to 5 carbon atoms;
l represents 0 or 1:
m is 1:
n represents an integer of 0 to 10;
and p is 1.

3 more elements

Dependencies are inferred from the claim text.

Liquid crystalline compound and liquid crystal composition containing the same

Life of this patent

Liquid crystalline compound and liquid crystal composition containing the same

Life of this patent

Abstract

Claims16