Liquid crystal composition, production thereof, and liquid cryst

Details Liquid crystal composition, production thereof, and liquid cryst Liquid crystal composition, production thereof, and liquid cryst

1997-05-20

1999-08-17

Wu, Shean C.

Compositions

Liquid crystal compositions

2522995, 2522996, C09K 1952, C09K 1954

Patent

active

059389729

ABSTRACT:
Disclosed herein are a liquid crystal composition which has a low viscosity and exhibits a high response speed while keeping the characteristic properties (e.g., orientation and switching performance) required of liquid crystal materials, a liquid crystal element based on said liquid crystal composition, and a process for producing said liquid crystal composition. The liquid crystal composition contains a clathrate compound of liquid crystal molecules with cyclodextrin or a derivative thereof. The clathrate compound functions to increase the free volume of liquid crystal molecules. The liquid crystal composition is prepared by dissolving in a solvent a liquid crystal and cyclodextrin (or a derivative thereof), thereby forming a clathrate compound and adding this clathrate compound to a base liquid crystal material.

REFERENCES:
patent: 5178792 (1993-01-01), Harada et al.
WPIDS 97-267687, 1997.
Velho et al., "Viscosity of Nematic Mixtures: a free volume approach", Liq. Cryst. 5(1), 349-57, 1989.

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