Compositions – Electrically conductive or emissive compositions – Elemental carbon containing
Patent
1979-10-12
1985-12-24
Barr, Josephine L.
Compositions
Electrically conductive or emissive compositions
Elemental carbon containing
252512, 252518, H01B 106
Patent
active
045604983
ABSTRACT:
Disclosed is a positive temperature coefficient of resistance (PTC) crosslinked polymeric composition comprising a first polymeric material exhibiting high green strength prior to crosslinking and elastomeric behavior subsequent to cross-linking, and a second polymeric material comprising a thermoplastic, both said materials having dispersed therein conductive particles, e.g., carbon black, and further, said composition exhibiting a rise in resistance with increased temperature at temperatures above the melting point of either material.
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Research Disclosure, No. 136, p. 26, Aug. 1975.
Hammack Teddy J.
Horsma David A.
Barr Josephine L.
Burkard Herbert G.
Raychem Corporation
Richardson Timothy H. P.
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