Compositions – Liquid crystal compositions – Containing nonsteryl liquid crystalline compound of...
Patent
1996-08-21
1998-03-24
Wu, Shean C.
Compositions
Liquid crystal compositions
Containing nonsteryl liquid crystalline compound of...
25229963, 25229966, 556406, C09K 1934, C09K 1930, C07F 708
Patent
active
057309027
ABSTRACT:
An optically active silacyclohexane compound of the formula (I) ##STR1## wherein R represents an organic residue, X represents --CH.sub.2 -- or --O--; Z represents a chiral group having at least one chiral carbon atom; L.sub.1 and L.sub.2 independently represent H or F, n is 0 or 1; ##STR2## represents a trans-1-sila-1,4-cyclohexylene group or trans-4-sila-1,4-cyclohexylene group whose silicon atom at the 1 or 4 position has H, F, Cl or CH.sub.3, or a 1,4-cyclohexylene group; and ##STR3## represents a trans-1-sila-1,4-cyclohexylene group or trans-4-sila-1,4-cyclohexylene group whose silicon atom at the 1 or 4 position has H, F, Cl or CH.sub.3, a 1,4-cyclohexylene group or a 1,4-phenylene group provided that at least one of ##STR4## represents the trans-1-sila-1,4-cyclohexylene group or trans-4-sila-1,4-cyclohexylene group defined above. A liquid crystal composition comprising the compound defined above and a liquid crystal display device comprising the composition are also described.
REFERENCES:
patent: 5454977 (1995-10-01), Shimizu et al.
Kaneko Tatsushi
Nakashima Mutsuo
Ogihara Tsutomu
Shimizu Takaaki
Shin-Etsu Chemical Co. , Ltd.
Wu Shean C.
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