US 9,481,828 B2 · Liquid Crystal compound containing cyclobutyl group and difluoromethyleneoxy linking group, and preparation method and use thereof

Abstract

A liquid crystal compound containing cyclobutyl and a linking group difluoromethyleneoxy, and a preparation method and use thereof are disclosed. The compound is as shown in Formula I. The liquid crystal compound containing cyclobutyl as a terminal group and difluoromethyleneoxy (—CF2O—) as a linking group in the molecular structure of Formula I according to the present invention, has not only a high dielectric anisotropy, but also importantly an extremely fast response speed and a high clearing point, which are of great significance for the formulation of a liquid crystal mixture.

Claims10

Dependent claims

A compound of Formula I

wherein
is selected from 1,4-cyclohexylene, 1,4-cyclohexylene in which one —CH2— is substituted with O, 1,4-phenylene and 1,4-phenylene substituted with fluoro;
is selected from 1,4-phenylene and 1,4-phenylene substituted with fluoro;
X1, X2, X3 and X4 are each independently selected from H and F;
X5 is selected from H, F, Cl, CF3, CHF2, OCF3 and OCHF2;
m is selected from 1, 2 and 3;
and
n is selected from 0 and 1.

5 more elements

Dependencies are inferred from the claim text.

Facts

Application

14/407,271Filed 26 Nov 2013

Priority

CN 2012 1 054532114 Dec 2012

Published

US 2015/0284632 A18 Oct 2015

Granted

1 Nov 2016

Term ends

Not estimatedThe source records don’t support an estimate.

Classification18 codes

C09K 19/3066
Cyclohexane rings: in which the rings are linked by a chain containing carbon and oxygen atoms, e.g. esters or ethers
C07C 43/21
Having an ether-oxygen atom bound to a carbon atom of a six-membered aromatic ring: containing rings other than six-membered aromatic rings
C07C 43/225
Having an ether-oxygen atom bound to a carbon atom of a six-membered aromatic ring: containing halogen
C07C 43/29
Having an ether-oxygen atom bound to carbon atoms both belonging to six-membered aromatic rings: containing halogen

Liquid Crystal compound containing cyclobutyl group and difluoromethyleneoxy linking group, and preparation method and use thereof

Life of this patent

Liquid Crystal compound containing cyclobutyl group and difluoromethyleneoxy linking group, and preparation method and use thereof

Life of this patent

Abstract

Claims10