Title:
FLUORINATED ALKYL ETHER COMPOUNDS, LIQUID-CRYSTAL COMPOSITIONS, AND LIQUID-CRYSTAL DISPLAY DEVICES
Document Type and Number:
WIPO Patent Application WO/1997/047576
Kind Code:
A1
Abstract:
Liquid-crystal compounds which are excellent in compatibility with other liquid-crystal materials particularly even at low temperatures, have a high voltage retention and a low threshold voltage, are lowered in the temperature dependence of these characteristic values, have a high 'DELTA'n value, and exhibit liquid-crystal properties over a wide temperature range, the compounds being represented by the general formula: Ra-A1-Z1-A2-Z2-(-A3-Z3-)m-A0-Rf (wherein m is 0 or 1; A0, A1, A2 and A3 are each a six-membered ring, with A0 being 1,4-phenylene which may be substituted with one to three fluorine and/or chlorine atoms and A1, A2 and A3 being selected each independently from among trans-1,4-cyclohexane, optionally halogenated 1,4-phenylene, cyclohexene-1,4-diyl and 1,3-dioxane-2,5-diyl; Z1, Z2 and Z3 are each independently a bridge between rings and selected from among -(CH2)2-, -(CH2)4-, -CH2O- and -OCH2- which may be halogenated, and single bond (-); Rf is -OCF2CF2H or -OCF2CFHCF3; and Ra is a C1-C20 linear or branched monovalent organic group); liquid-crystal compositions comprising at least one of the compounds; and liquid-crystal display devices made by using the compositions.
Inventors:
KONDO TOMOYUKI (JP)
MATSUI SHUICHI (JP)
MIYAZAWA KAZUTOSHI (JP)
TAKEUCHI HIROYUKI (JP)
TAKESHITA FUSAYUKI (JP)
NAKAGAWA ETSUO (JP)
MATSUI SHUICHI (JP)
MIYAZAWA KAZUTOSHI (JP)
TAKEUCHI HIROYUKI (JP)
TAKESHITA FUSAYUKI (JP)
NAKAGAWA ETSUO (JP)
Application Number:
PCT/JP1997/001936
Publication Date:
December 18, 1997
Filing Date:
June 06, 1997
Export Citation:
Assignee:
CHISSO CORP (JP)
KONDO TOMOYUKI (JP)
MATSUI SHUICHI (JP)
MIYAZAWA KAZUTOSHI (JP)
TAKEUCHI HIROYUKI (JP)
TAKESHITA FUSAYUKI (JP)
NAKAGAWA ETSUO (JP)
KONDO TOMOYUKI (JP)
MATSUI SHUICHI (JP)
MIYAZAWA KAZUTOSHI (JP)
TAKEUCHI HIROYUKI (JP)
TAKESHITA FUSAYUKI (JP)
NAKAGAWA ETSUO (JP)
International Classes:
C07C43/192; C07C43/225; C07C255/46; C07C255/50; C07C323/10; C07D239/26; C07D319/06; C09K19/04; C09K19/12; G02F1/13; C09K19/14; C09K19/20; C09K19/30; C09K19/34; C09K19/42; C09K19/46; (IPC1-7): C07C43/225; C07D319/06; C09K19/12; C09K19/14; C09K19/30; C09K19/34; C09K19/42; G02F1/13
Foreign References:
| JPH07316082A | 1995-12-05 | |||
| DE19513007A1 | 1995-10-19 | |||
| JPH07118184A | 1995-05-09 | |||
| DE4137401A1 | 1993-05-19 | |||
| JPH06500343A | 1994-01-13 | |||
| JPH0967576A | 1997-03-11 | |||
| JPH08239665A | 1996-09-17 |
Other References:
See also references of EP 0926120A4
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