Compositions – Liquid crystal compositions
Patent
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.
Matsui Eriko
Yasuda Akio
Sony Corporation
Wu Shean C.
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