Title:
FLUORINE-SUBSTITUTED BENZENE DERIVATIVES, LIQUID-CRYSTAL COMPOSITION, AND LIQUID-CRYSTAL DISPLAY ELEMENT
Document Type and Number:
WIPO Patent Application WO/1998/023564
Kind Code:
A1
Abstract:
Liquid-crystalline compounds which have an extremeley high voltage retention, an extremely small temperature dependence of the retention, a low threshold voltage, and a large value of $g(D)n; a liquid-crystal composition containing any of the liquid-crystal compounds; and a liquid-crystal display element containing the liquid-crystal composition. The compounds are represented by general formula (1), wherein R represents C�1-20? alkyl, in which arbitrary non adjacent methylene groups (-CH�2?-) may have been replaced with oxygen atoms (-O-); Y�1? to Y�16? each independently represents hydrogen or fluorine, provided at least two of them are fluorine atoms and that at least two hydrogen atoms of each 1,4-phenylene group have not been replaced with fluorine atoms; X represents halogeno or C�1-20? alkyl in which arbitrary non adjacent methylene groups may have been replaced with oxygen atoms and any hydrogen has optionally been replaced with fluorine; and Z�1?, Z�2?, and Z�3? each independently represents -(CH�2?)�2?-, -(CH�2?)�4?-, -CH�2?O-, -OCH�2?-, -(CH�2?)�3?O-, -O(CH�2?)�3?- or a single bond; and each atom contained in this compound may have been replaced with an isotope thereof; provided when X is -OCF�2?CF�2?H, Z�1? and Z�3? are both single bonds, and Z�2? is -(CH�2?)�2?-, then none of Y�6?, Y�10?, and Y�12? is F, and none of Y�1? to Y�5?, Y�7? to Y�9?, Y�11?, and Y�13? to Y�16? is H; none of Y�2?, Y�10?, and Y�12? is F, and none of Y�1?, Y�3? to Y�9?, Y�11?, and Y�13? to Y�16? is H; or none of Y�2?, Y�4?, Y�10?, and Y�12? is F and none of Y�1?, Y�3?, Y�5? to Y�9?, Y�11?, and Y�13? to Y�16? is H.
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Inventors:
KONDO TOMOYUKI (JP)
MIYAZAWA KAZUTOSHI (JP)
TAKEUCHI HIROYUKI (JP)
MATSUI SHUICHI (JP)
HISATSUNE YASUSUKE (JP)
TAKESHITA FUSAYUKI (JP)
NAKAGAWA ETSUO (JP)
MIYAZAWA KAZUTOSHI (JP)
TAKEUCHI HIROYUKI (JP)
MATSUI SHUICHI (JP)
HISATSUNE YASUSUKE (JP)
TAKESHITA FUSAYUKI (JP)
NAKAGAWA ETSUO (JP)
Application Number:
PCT/JP1997/004331
Publication Date:
June 04, 1998
Filing Date:
November 27, 1997
Export Citation:
Assignee:
CHISSO CORP (JP)
KONDO TOMOYUKI (JP)
MIYAZAWA KAZUTOSHI (JP)
TAKEUCHI HIROYUKI (JP)
MATSUI SHUICHI (JP)
HISATSUNE YASUSUKE (JP)
TAKESHITA FUSAYUKI (JP)
NAKAGAWA ETSUO (JP)
KONDO TOMOYUKI (JP)
MIYAZAWA KAZUTOSHI (JP)
TAKEUCHI HIROYUKI (JP)
MATSUI SHUICHI (JP)
HISATSUNE YASUSUKE (JP)
TAKESHITA FUSAYUKI (JP)
NAKAGAWA ETSUO (JP)
International Classes:
C07C17/12; C07C17/26; C07C17/35; C07C25/18; C07C43/225; C07C45/00; C09K19/10; C09K19/44; C09K19/46; (IPC1-7): C07C25/18; C07C43/225; C09K19/10; G02F1/13
Foreign References:
JPH08511261A | 1996-11-26 | |||
JPH08502499A | 1996-03-19 | |||
JPH01242542A | 1989-09-27 |
Other References:
See also references of EP 0949231A4
Attorney, Agent or Firm:
Kawakita, Takenaga (3-6 Nihonbashi-kayabacho 2-chom, Chuo-ku Tokyo, JP)
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