Liquid-crystalline 4-alkylcyclohexyl esters

Details Liquid-crystalline 4-alkylcyclohexyl esters Liquid-crystalline 4-alkylcyclohexyl esters

1981-02-26

1982-07-27

Gron, Teddy S.

Compositions

Liquid crystal compositions

Containing nonsteryl liquid crystalline compound of...

560102, 350350R, 2522997, C09K 334, G02F 113, C07C 6975, C07C 6976

Patent

active

043416535

ABSTRACT:
Novel liquid crystal compounds having broader and preferable liquid crystal temperature ranges are provided. Their optically active isomers form a cholesteric liquid crystal, while their racemates form a nematic liquid crystal.
The compounds are trans-4"-alkylcyclohexyl esters of 4'-(2-methyl-butyl)-4-biphenylcarboxylic acid expressed by the general formula ##STR1## wherein R represents a straight chain alkyl group having 1 to 10 carbon atoms, and the symbol * represents an asymmetric carbon atom.

REFERENCES:
patent: 4065489 (1977-12-01), Steinstrasser
patent: 4082428 (1978-04-01), Hsu
patent: 4113647 (1978-09-01), Coates et al.
patent: 4149413 (1979-04-01), Gray et al.
patent: 4195916 (1980-04-01), Coates et al.
patent: 4229315 (1980-10-01), Krause et al.
patent: 4257911 (1981-03-01), Gray et al.
patent: 4293434 (1981-10-01), Deutscher et al.
Gray, G. W. et al., Mol. Cryst. Liq. Cryst., vol. 37, pp. 157-211 (1976).
Gray, G. W. et al., Mol. Cryst. Liq. Cryst., vol. 34 (Letters), pp. 211-217 (1977).

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