Conductive polymer composition

Details Conductive polymer composition Conductive polymer composition

1994-06-08

1996-12-10

McGinty, Douglas J.

Compositions

Electrically conductive or emissive compositions

Elemental carbon containing

252500, 252510, 525227, 524523, H01B 124, H01B 120, C08L 3308, C08K 304

Patent

active

055827705

ABSTRACT:
A conductive polymer composition containing a particulate conductive filler dispersed in a polymeric component. The polymeric component comprises a first polymer which (i) is present in an amount 25 to 75% by weight of the total polymeric component, and (ii) is polyethylene, and a second polymer which (i) is present in an amount 25 to 75% by weight of the total polymeric component, and (ii) comprises units derived from a first monomer which is ethylene and a second monomer which is an alkyl acrylate having the formula --CH.sub.2 .dbd.CHCOOC.sub.m H.sub.2m+1 --, where m is at least 4. The resulting composition is useful in preparing electrical devices, e.g. circuit protection devices, which have lower resistivities, higher PTC anomalies, and better thermal and electrical stability than devices comprising conventional conductive polymer compositions.

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