ALKENYL COMPOUNDS BEARING OXYGENIC LINKAGES, LIQUID-CRYSTAL COMPOSITION, AND LIQUID-CRYSTAL DISPLAY ELEMENT

Title:

ALKENYL COMPOUNDS BEARING OXYGENIC LINKAGES, LIQUID-CRYSTAL COMPOSITION, AND LIQUID-CRYSTAL DISPLAY ELEMENT

Document Type and Number:

WIPO Patent Application WO/1997/020791

Kind Code:

A1

Abstract:

Liquid-crystal compounds represented by general formula (1) (wherein X1, X2 and X3 are each -CH2O-, -OCH2-, -(CH2)3O-, -O(CH2)3-, a covalent bond, -CF2O-, -OCF2-, -CH=CH-, -CC-, -CH2CH2-, -(CH2)4-, -CH=CH-CH2CH2- or -CH2CH2-CH=CH-, with the proviso that at least one of them is -CH2O-, -OCH2-, -(CH2)3O- or -O(CH2)3-; R1 is C2-C20 alkenyl; Y1 is halogeno, cyano or substituted or unsubstituted C1-C20 alkyl; the rings A1, A2, A3 and A4 are each substituted or unsubstituted 1,4-cyclohexylene, 1,4-cyclohexenylene or 1,4-phenylene; and m and n are each 0 or 1); and a liquid-crystal composition and a liquid-crystal display element containing at least one of these compounds. The compounds exhibit steep threshold value characteristics, an excellent compatibility, a low viscosity, a quick response, and so on.

Inventors:

KONDO TOMOYUKI (JP)
MATSUI SHUICHI (JP)
MIYAZAWA KAZUTOSHI (JP)
HACHIYA NORIHISA (JP)
NAKAGAWA ETSUO (JP)

Application Number:

PCT/JP1996/003323

Publication Date:

June 12, 1997

Filing Date:

November 13, 1996

Export Citation:

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Assignee:

CHISSO CORP (JP)
KONDO TOMOYUKI (JP)
MATSUI SHUICHI (JP)
MIYAZAWA KAZUTOSHI (JP)
HACHIYA NORIHISA (JP)
NAKAGAWA ETSUO (JP)

International Classes:

G02F1/13; C07C43/188; C07C43/192; C07C43/215; C07C43/225; C07C255/46; C07C255/54; C07D239/26; C09K19/04; C09K19/20; C09K19/30; C09K19/42; C09K19/44; C09K19/46; (IPC1-7): C07C43/188; C07C43/192; C07C43/215; C07C43/225; C07C255/46; C07C255/54; C09K19/20; C09K19/30; C09K19/42; G02F1/13

Foreign References:

JPH02180840A	1990-07-13
JPS61227547A	1986-10-09
JPH0867641A	1996-03-12
JPH08157409A	1996-06-18
JPH01151531A	1989-06-14

Other References: