Silacyclohexane compound, a method of preparing it and a liquid

Details Silacyclohexane compound, a method of preparing it and a liquid Silacyclohexane compound, a method of preparing it and a liquid

1995-04-03

1996-11-26

Kelly, C. H.

Compositions

Liquid crystal compositions

Containing nonsteryl liquid crystalline compound of...

25229966, 556406, 359103, C09K 1934, C09K 1912, C07F 708, G02F 113

Patent

active

055782442

ABSTRACT:
A silacyclohexane compound represented by the following general formula (I) ##STR1## wherein R denotes a linear-chain alkyl group with a carbon number of 1-10, a fluoroalkyl group with a carbon number of 1-10 in which a fluorine atom(s) is substituted for one or two hydrogen atoms, a branched-chain alkyl group with a carbon number of 3-8, an alkoxyalkyl group with a carbon number of 2-7, or an alkenyl group with a carbon number of 2-8. ##STR2## denotes a trans-1-sila-1,4-cyclohexylene or trans-4-sila-1,4-cyclohexylene group whose silicon at position 1 or position 4 has a substitutional group(s) of H, F, Cl or CH.sub.3. L.sub.1 and L.sub.2 independently denote H or F. L.sub.3 and L.sub.4 independently denote H, F or Cl. X denotes a H, CN, F, Cl, CF.sub.3, CF.sub.2 Cl, CHFCl, OCF.sub.3, OCF.sub.2 Cl, OCHFCl, OCHF.sub.2, or a linear-chain alkyl or alkoxy group with a carbon number of 1-10. i, j and k respectively denote 0 or 1, where (i+j+k) is 0 or 1. n denotes 0, 1 or 2.

REFERENCES:
patent: 2607791 (1952-08-01), Goodwin et al.
patent: 3359293 (1967-12-01), Wu et al.
patent: 5389295 (1995-02-01), Wachtler et al.
patent: 5454977 (1995-10-01), Shimizu et al.

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