Compositions – Liquid crystal compositions – Containing nonsteryl liquid crystalline compound of...
Patent
1987-07-31
1988-10-18
Gron, Teddy S.
Compositions
Liquid crystal compositions
Containing nonsteryl liquid crystalline compound of...
2522995, 2522996, 570128, 585 20, C09K 1930, C09K 1954, C09K 1906, C07C 1300
Patent
active
047786205
ABSTRACT:
A novel tolan derivative compound as a liquid crystal substance having a low viscosity and a good compatibility with existing liquid crystals at low temperatures in addition to a large optical anisotropy value and a high clearing point, and a liquid crystal mixture containing the above compound are provided, which compound is expressed by the formula ##STR1## wherein R.sup.1 represents an alkyl group of 1 to 10 carbon atoms, R.sup.2 represents an alkyl group of 1 to 10 carbon atoms, X represents --CH.sub.2 CH.sub.2 -- and A represents an H atom or an F atom.
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Goto Yasuyuki
Ogawa Tetsuya
Chisso Corporation
Gron Teddy S.
Thomas J. E.
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