Electrorheological fluids of polar solids and organic semiconductors
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United States of America Patent
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Jan 27, 1998
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N/A
app pub date -
Mar 14, 1996
filing date -
Aug 19, 1994
priority date (Note) -
Expired
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Abstract
An electrorheological fluid of a particulate phase and a continuous phase of a hydrophobic liquid medium, a certain dispersed particulate phase, and a low molecular weight polar material exhibits a broad effective temperature range. The dispersed particulate phase comprises a polar solid material which is capable of exhibiting substantial electrorheological activity only in the presence of a low molecular weight polar material, and an organic semiconductor. The weight ratio of the polar solid material to the organic semiconductor is at least about 2:1.
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