Mitsui Petrochemical Industries, Ltd.

Toyoji Shimizu

Shinichi Nishiyama

Shoichi Miyakoshi

Katsuo Taniguchi

Hideo Hama

Tooru Yamanaka

Nobuyuki Doi

Fujihisa Matsunaga

Hideo Yamaoka

Toru Yamanaka

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.

Carboxylate compounds, liquid crystal compositions and liquid crystal

The liquid crystal racemic mixture of the invention is represented by the formula [I]:

Liquid crystal racemic mixture, liquid crystal composition and liquid

This invention relates to carboxylic acid ester compounds or liquid crystal compounds represented by the following formula [A], liquid crystal compositions and liquid crystal elements using these compounds, the method of producing said liquid crystal elements, and other uses. ##STR1## wherein R represents one radical selected from the group consisting of an alkyl group having 6-18 carbon atoms, an alkoxy group having 6-18 carbon atoms, and a halogenated alkyl group having 6-18 carbon atoms, X represents --CF.sub.3 or --CH.sub.2 --CH.sub.3, m is an integral number of 1-10 when X is --CF.sub.3, and an integral number of 2-10 when X is --CH.sub.2 --CH.sub.3, and C* represents an asymmetric carbon atom.

Carboxylic acid ester compounds, and their related matters and method of

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Tokyo, Japan

Toyoji Shimizu