Silacyclohexane compounds, preparation thereof, liquid crystal c

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

1995-12-01

1997-06-24

Kelly, C. H.

Compositions

Liquid crystal compositions

Containing nonsteryl liquid crystalline compound of...

556406, 25229963, C09K 1934, C09K 1930, C07F 708

Patent

active

056414307

ABSTRACT:
A silacyclohexane compound of the following formula (I) or (II) ##STR1## wherein R is an organic residue, ##STR2## represents an unsubstituted or substituted trans-1-sila-1,4-cyclohexylene group or trans-4-sila-1,4-cyclohexylene group, L.sub.1 and L.sub.2 independently represent H, F, Cl or CH.sub.3 ; and X represents an organic residue, CN, F or Cl, or ##STR3## wherein R, L.sub.1, L.sub.2 and X are, respectively, as defined above, and at least one of ##STR4## represents an unsubstituted or substituted trans-1-sila-1,4-cyclohexylene group or trans-4-sila-1,4-cyclohexylene group, and the other may be a trans-1,4-cyclohexylene group. The preparation of these compounds is described along with a composition comprising the compound (I) and/or (II) and a display device comprising the composition.

REFERENCES:
patent: 5454977 (1995-10-01), Shimizu et al.

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