Silacyclohexane compounds, preparation thereof liquid crystal co

Details Silacyclohexane compounds, preparation thereof liquid crystal co Silacyclohexane compounds, preparation thereof liquid crystal co

1996-05-10

1998-03-24

Wu, Shean C.

Compositions

Liquid crystal compositions

Containing nonsteryl liquid crystalline compound of...

25229963, 349182, 556406, C09K 1952, G02F 113, C07F 708

Patent

active

057309019

ABSTRACT:
A silacyclohexane compound of the formulas (I) ##STR1## wherein R represents an organic residue, ##STR2## represents an unsubstituted or substituted silicon-containing cyclohexylene group or a 1,4-cyclohexylene group, ##STR3## represents an unsubstituted or substituted phenylene, an unsubstituted or substituted silicon-containing cyclohexylene group or trans-4-sila-1,4-cyclohexylene group, or a 1,4-cyclohexylene group provided that at least one of these residues represents a silicon-containing cyclohexylene group, m, n, i, k and l are, respectively, 0 or 1 provided that j+l=0 or 1 and m+k=1 or 2, L.sub.1 and L.sub.2, respectively, represent H or F, m and n are, respectively, 0 or 1, X.sub.1 and Y independently represent H, F or Cl, and X.sub.2 represents F or Cl. A liquid crystal composition comprising the silacyclohexane compound of the above formula is also described, along with a liquid crystal device comprising the composition.

REFERENCES:
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patent: 5523440 (1996-06-01), Nakashima et al.
patent: 5527490 (1996-06-01), Kinsho et al.
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patent: 5560866 (1996-10-01), Ogihara et al.
patent: 5582765 (1996-12-01), Kinsho et al.

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