Compositions – Liquid crystal compositions
Patent
1992-08-10
1994-08-16
Wu, Shean
Compositions
Liquid crystal compositions
252582, 252587, C09K 1952, F21V 904
Patent
active
053384814
ABSTRACT:
A new class of asymmetrical diphenyl-diacetylene liquid crystal compounds exhibit ideal properties for formulating eutectic mixtures suitable for infrared and microwave applications. The new class of liquid crystal compounds comprise asymmetrical nonpolar end groups. These compounds exhibit low melting points, wide nematic temperature range and low heat fusion enthalpy. Eutectic mixtures containing entirely diphenyl-diacetylene homologs using the new compounds have high birefringence, low viscosity and wide nematic range. These unique properties are especially advantageous when these mixtures are used in infrared spatial light modulators, high speed liquid crystal modulators and polymer dispersed liquid crystals shutters. The new asymmetrical diphenyl-diacetylene liquid crystal compounds comprise the following basic structure:
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Dalton Larry R.
Margerum J. David
Meng Hsiang-Hui B.
Wu Shin-Tson
Denson-Low W. K.
Duraiswamy V. D.
Hughes Aircraft Company
University of Southern California (USC)
Wu Shean
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