Light polarizing materials and suspensions thereof
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United States of America Patent
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Mar 26, 1991
Issued Date -
N/A
app pub date -
Oct 27, 1989
filing date -
Feb 10, 1989
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Expired
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Abstract
Light-polarizing materials comprising a complex obtained by reacting elemental iodine, and iodide and a monoalkyl- or dialkyl-piperazinedione or an unsubstituted or monoalkyl- or dialkyl- substituted 2,5-dicarboxy-pyrazine, and uses thereof in liquid suspensions, set suspensions and light valves.
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