Compositions – Liquid crystal compositions – Containing nonsteryl liquid crystalline compound of...
Patent
1991-12-24
1994-10-18
Wu, Shean
Compositions
Liquid crystal compositions
Containing nonsteryl liquid crystalline compound of...
25229901, 560 56, 560 80, 560100, 560119, C09K 1932, C07C 6976
Patent
active
053565614
ABSTRACT:
In accordance with the present invention, there are provided carboxylate compounds represented by the following formula [A] and liquid crystal material comprising said compounds ##STR1## wherein R is a group selected from the group consisting of alkyl, alkoxy and halogenated alkyl group of 3-20 carbon atoms, X and Y represent each a group selected from the group consisting of --COO--, --OCO--, --CH.sub.2 CH.sub.2 --, --CH.sub.2 O--, --OCH.sub.2 --, --S--S--, ##STR2## or a single bond, A and B represent each a group selected from the group consisting of specific divalent aromatic and alicyclic group such as phenylene, cyclohexylene and tetrahydronaphthalene and R* is an optically active group of 4-20 carbon atoms containing at least one asymmetric carbon atom (hydrogen atoms attached to the carbon atoms of said optically active group may be substituted with halogen atoms), and m and n are each an integer of 0-2, with the proviso that both m and n do not become 0 at the same time.
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Doi Nobuyuki
Hama Hideo
Miyakoshi Shoichi
Nishiyama Shinichi
Shimizu Toyoji
Mitsui Petrochemical Industries Ltd.
Wu Shean
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