LIQUID-CRYSTAL COMPOUNDS HAVING LARGE VALUE OF PERMITTIVITY ANISOTROPY, LIQUID-CRYSTAL COMPOSITION CONTAINING THE SAME, AND LIQUID-CRYSTAL DISPLAY ELEMENT MADE USING THE LIQUID-CRYSTAL COMPOSITION

WIPO Patent Application WO/1999/001433

A1

Novel liquid-crystal compounds represented by general formula (1) and having a large value of permittivity anisotropy, wherein Ra is C¿1-20? alkyl; Rb is a group selected among Ra, halogeno, and cyano; Rc and Rd each is hydrogen or C¿1-3? alkyl; A1, A2, A3, and A4 each independently is pyridine oxide, pyrimidine dioxide, trans-1,4-cyclohexylene, or 1,4-phenylene, provided that at least one of A1, A2, A3, and A4 is a pyridine oxide ring or pyrimidine dioxide ring; Re is hydrogen, halogeno, or C¿1-3? alkyl; Z1, Z2, and Z3 each independently is a single bond or C¿1-4? alkylene in which one or more hydrogen atoms have been optionally replaced with halogen atoms; and m, n, and p each indepently is 0 or 1, provided that when A4 is a pyridine oxide ring bonded to Z3 at the 4-position, then p is 0.

BERNHARD HENRY (DE)
KRESSE HORST (DE)
DEMUS DIETRICH (DE)
TAKEUCHI HIROYUKI (JP)
MIYAZAWA KAZUTOSHI (JP)
HISATSUNE YASUSUKE (JP)
TAKESHITA FUSAYUKI (JP)
NAKAGAWA ETSUO (JP)
MATSUI SHUICHI (JP)

PCT/JP1998/003012

January 14, 1999

July 03, 1998

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CHISSO CORP (JP)
BERNHARD HENRY (DE)
KRESSE HORST (DE)
DEMUS DIETRICH (DE)
TAKEUCHI HIROYUKI (JP)
MIYAZAWA KAZUTOSHI (JP)
HISATSUNE YASUSUKE (JP)
TAKESHITA FUSAYUKI (JP)
NAKAGAWA ETSUO (JP)
MATSUI SHUICHI (JP)

C07D213/89; C09K19/04; C09K19/34; (IPC1-7): C07D213/89; C07D239/26; C09K19/24; C09K19/42; G02F1/13

WO1996011897A1

1996-04-25

JPH08325173A

1996-12-10

Kawakita, Takenaga (Nihonbashi-kayabacho 2-chome Chuo-ku Tokyo, JP)

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