Radiant energy – Ionic separation or analysis – Static field-type ion path-bending selecting means
Patent
1978-02-21
1979-01-02
Padgett, Benjamin R.
Radiant energy
Ionic separation or analysis
Static field-type ion path-bending selecting means
23230LC, 73356, 250429, 250474, 252299, 252408, 428 1, 116216, G09K 334, G02F 113, G01K 1116
Patent
active
041324641
ABSTRACT:
Provided is a liquid crystal device comprising a lyotropic-type cholesteric liquid crystal and an enclosure surrounding the liquid crystal, at least a part of which enclosure is transparent, so that the color of the liquid crystal, varying depending upon the change of temperature, is viewable therethrough. The liquid crystal is a concentrated solution having a concentration of approximately 50 to 85 wt.% of a cellulose derivative in water or an organic solvent. The cellulose derivative has an average polymerization degree of 30 to 600 and a chemical structure such that the --OH groups in the cellulose molecule are at least partially substituted with at least one radical of the following formula to the extent that the mole number (M.S.) of a hydroxyalkylating agent bonded with cellulose, per anhydro glucose unit of the cellulose molecule, is 2.0 to 10.0 at average:
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Gron T. S.
Hideki Ishii
Padgett Benjamin R.
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