CHLOROBENZENE DERIVATIVE AND LIQUID-CRYSTAL COMPOSITION CONTAINING THE SAME

WIPO Patent Application WO/1996/009272

A1

A tetracyclic chlorobenzene derivative represented by general formula (I) and being suitable for use in active-matrix display elements and a liquid-crystal composition containing the same (wherein each of rings A, B and C independently represents trans-1,4-cyclohexylene, etc.; each of Z1, Z2 and Z3 represents -CH2CH2- or a covalent bond provided that at least one thereof is -CH2CH2-; each of L1 and L2 represents H, etc.; and R represents C1-C10 alkyl, etc.; provided that the ring A is 1,4-phenylene when Z1 and Z3 are covalent bonds and Z2 is -CH2CH2- and is trans-1,4-cyclohexylene when Z1 and Z2 are covalent bonds and Z3 is -CH2CH2- and that the rings B and C cannot be 1,4-phenylene). This compound has large values of refractive index and permittivity anisotropies, exhibits a liquid-crystal phase in a wide temperature range, is excellent in low-temperature compatibility with known liquid-crystal compounds and provides a liquid-crystal composition suitable of, especially, TFT drive.

MATSUI SHUICHI (JP)
KONDO TOMOYUKI (JP)
MIYAZAWA KAZUTOSHI (JP)
GOTO YASUYUKI (JP)
NAKAGAWA ETSUO (JP)
SAWADA SHINICHI (JP)

PCT/JP1995/001917

March 28, 1996

September 22, 1995

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CHISSO CORP (JP)
MATSUI SHUICHI (JP)
KONDO TOMOYUKI (JP)
MIYAZAWA KAZUTOSHI (JP)
GOTO YASUYUKI (JP)
NAKAGAWA ETSUO (JP)
SAWADA SHINICHI (JP)

C07C17/12; C07C17/26; C07C17/354; C07C25/18; C07C45/29; C07C45/59; C07C45/62; C07C45/68; C09K19/14; C09K19/30; C09K19/42; G02F1/13; (IPC1-7): C07C25/18; C09K19/14; C09K19/30; C09K19/42; G02F1/13

EP0449288A2	1991-10-02
JPH04501576A	1992-03-19
JPH05279279A	1993-10-26

See also references of EP 0785179A4

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