Electrical device utilizing conductive polymer composition
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United States of America Patent
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Mar 3, 1992
Issued Date -
N/A
app pub date -
Feb 14, 1991
filing date -
Sep 9, 1981
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Abstract
Conductive polymer compositions based on polyvinylidene fluoride have improved properties when the polyvinylidene fluoride has a very regular structure which can be characterized by a low head-to-head content in the repeating units. The improved properties include electrical stability when contacted by organic fluids and/or when maintained at elevated temperatures in air. Such compositions which exhibit PTC behavior are particularly useful in the form of self-limiting heaters which are immersed in organic fluds, especially flexible strip heaters for heating diesel fuel before it passes through a fuel filter.
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