Mesomorphic compound for use in liquid crystal composition and l

Details Mesomorphic compound for use in liquid crystal composition and l Mesomorphic compound for use in liquid crystal composition and l

1991-06-17

1993-09-14

Stoll, Robert L.

Compositions

Liquid crystal compositions

Containing nonsteryl liquid crystalline compound of...

25229962, 25229963, 25229967, 25229901, 546192, 546208, 546269, 546273, 548215, 548217, 548221, 548224, 548237, 548241, 548243, C09K 1934, C07D40100, C07D26352

Patent

active

052445968

ABSTRACT:
A mesomorphic compound represented by the following formula [I]: ##STR1## wherein R.sub.1 and R.sub.2 independently denote an alkyl group having 1-16 carbon atoms capable of having a substituent; X.sub.1, X.sub.2, X.sub.3 and X.sub.4 independently denote a single bond ##STR2## A.sub.1, A.sub.2 and A.sub.3 independently denote ##STR3## X.sub.5 and X.sub.6 independently denote hydrogen atom, fluorine, chlorine, bromine, CH.sub.3, CN or CF.sub.3 ; n.sub.1 and n.sub.2 are 0 or 1, with provisos that (1) X.sub.2 cannot be a single bond when n.sub.1 is 0, (2) X.sub.3 cannot be a single bond when N.sub.2 is 1 and (3) at least one of X.sub.2 and X.sub.3 denotes ##STR4## when both n.sub.1 and n.sub.2 is O and A.sub.2 denote ##STR5##

REFERENCES:
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patent: 5190690 (1993-03-01), Takiguchi et al.
Gattermann, "Die Praxis des Organisden Chemikers", p. 214.
Adams et al., "J. Am. Chem. Soc.", vol. 63, p. 196 (1941).
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Kanaoka et al., "Chem. Pharm. Bull.", vol. 18, p. 587 (1970).
Schadt et al., "Applied Physics Letters", vol. 18, No. 4, pp. 127-128 (1971).
Pavluchenko et al., "Mol. Cryst. Liq. Cryst", vol. 37, pp. 35-36 (1976).
Chemical Abstracts, vol. 98, No. 21 (May 1983) 179360r.

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