Novel tolan type liquid crystal compound

Details Novel tolan type liquid crystal compound Novel tolan type liquid crystal compound

1987-12-11

1989-03-28

Gron, Teddy S.

Compositions

Liquid crystal compositions

Containing nonsteryl liquid crystalline compound of...

2522995, 570128, 570154, 350350R, C09K 1930, C09K, C09K, C07C 2524, G02F 113

Patent

active

048161802

ABSTRACT:
A novel tolan type liquid crystal compound having a large optical anisotropy value, a high N-I transistion temperature and also a low viscosity, and a liquid crystal composition containing the same are provided, which compound is a 4-(trans-4"-alkylcyclohexyl-1"-ethyl)-3',4'-substituted- or 4-(trans-4"-alkylcyclohexyl-1'-ethyl)-4'-substituted-tolan expressed by the formula ##STR1## wherein R' represents an alkyl group of 1 to 10 carbon atoms, X' represents a halogen atom of F, Cl or Br and X" represents hydrogen atom or a halogen atom of F, Cl or Br.

REFERENCES:
patent: 3925482 (1975-12-01), Jacques
patent: 4528114 (1985-07-01), Petrzilka et al.
patent: 4670182 (1987-06-01), Fujita et al.
patent: 4713468 (1987-12-01), Takatsu et al.
patent: 4754051 (1988-06-01), Sasaki et al.

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