Component for liquid crystal composition and liquid crystal comp

Compositions – Liquid crystal compositions – Containing nonsteryl liquid crystalline compound of...

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25229901, 25229964, 560 59, 560 65, 560 83, 560 64, C09K 1912, C09K 1952, C07C 6976

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active

051104970

ABSTRACT:
An optically active compound represent by formula (I): ##STR1## wherein R.sub.1 represents a fluoroalkyl group having from 1 to 18 carbon atoms; R.sub.2 represents an alkyl group having from 1 to 16 carbon atoms and an aralkyl group having from 6 to 16 carbon atoms; R.sub.3 represents C.sub.2 F.sub.5, CF.sub.3, CHF.sub.2, or CH.sub.2 F; X represents a single bond, --O--, --COO--, or --OCO--; Y represents --COO--, --OCO--, --CH.sub.2 O--, or --OCH.sub.2 --; Z represents --COO-- or --O--; (A) and (B) each represent a cyclic group; and * indicates an optically active center, and a liquid crystal composition containing at least one of said optically active compounds are disclosed. The compound is useful not only as a liquid crystal compound but as a chiral dopant to provide a liquid crystal composition exhibiting a chiral smectic phase.

REFERENCES:
patent: 4886619 (1989-12-01), Janulis
patent: 4911861 (1990-03-01), Higuchi et al.
patent: 4921632 (1990-05-01), Nakamura et al.
Dewent Abstract of JP-A-1-230548.

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