Optically active ether derivatives, preparation process therefor

Details Optically active ether derivatives, preparation process therefor Optically active ether derivatives, preparation process therefor

1990-04-18

1991-05-07

Maples, John S.

Compositions

Liquid crystal compositions

Containing nonsteryl liquid crystalline compound of...

350350S, 25229901, 25229967, 560 59, 560 73, 560102, 560108, 560109, C09K 1912

Patent

active

050134795

ABSTRACT:
Disclosed are herein optically active ether derivatives represented by the formula (I): ##STR1## (wherein X represents --COO-- or --OCO--; A represents an alkyl or alkoxyl group having 3 to 15 carbon atoms; R represents an alkyl or alkyloxyalkyl group having 1 to 20 carbon atoms; l and m each represents a number of 1 to 2; and * indicates an asymmetric carbon atom), preparation processes therefor, liquid crystal materials containing such ether derivatives as active ingredient, and an optical switching element using said liquid crystal materials as liquid crystal element.

REFERENCES:
patent: 4556727 (1985-12-01), Walba
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patent: 4812259 (1989-03-01), Yoshinaga et al.
patent: 4834907 (1989-05-01), Inoue et al.
patent: 4882085 (1989-11-01), Yoshinaga et al.
patent: 4911861 (1990-03-01), Higuchi et al.
Gray et al., Liquid Crystals & Plastic Crystals, vol. 1, pp. 142-143 (1975).
Mol. Cryst. Liq. Cryst., 1978, vol. 48, pp. 37-51.

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