Conductive polymer compositions

Details Conductive polymer compositions Conductive polymer compositions

1982-09-27

1990-06-19

Barr, Josephine

Electric heating

Heating devices

With heating unit structure

252511, 3382SD, 338 22R, H01B 106

Patent

active

049351567

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 fluids, especially flexible strip heaters for heating diesel fuel before it passes through a fuel filter.

REFERENCES:
patent: 2978665 (1956-07-01), Vernet et al.
patent: 3823217 (1974-07-01), Kampe
patent: 3935159 (1976-01-01), Demillecamps et al.
patent: 4237441 (1980-12-01), van Konynenburg et al.
patent: 4251432 (1981-02-01), Martin
patent: 4304987 (1981-12-01), Konynenburg
patent: 4328151 (1982-05-01), Robinson
European Search Report, 12/22/82.
U.K. Search Report, 10/19/82.

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