Compositions – Liquid crystal compositions – Containing pleochroic dye
Patent
1982-09-30
1984-11-13
Gron, Teddy S.
Compositions
Liquid crystal compositions
Containing pleochroic dye
2522992, 2522994, 350349, G02F 113, C09K 334
Patent
active
044824734
ABSTRACT:
A liquid crystal mixture comprising a nematic liquid crystal having negative dielectric anisotropy, an optically active substance such as cholesteric or chiralnematic liquid crystal, a dichroic dye and an ionic substance characterized by use of a hexadecylpyridinium salt having the following structural formula as the ionic substance ##STR1## where X is a halogen atom.
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Gharadjedaghi, F., Mol. Cryst. Liq. Cryst., vol. 68, pp. 127-135, (1981).
Fujiwara Yoshiyuki
Hayashi Yuzo
Yamanashi Fumiaki
Alps Electric Co. ,Ltd.
Burke Henry T.
Gron Teddy S.
Shoup Guy W.
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