Thermoplastic composition with improved positive temperature...

Compositions – Electrically conductive or emissive compositions – Elemental carbon containing

Reexamination Certificate

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Details

C252S500000, C252S512000, C338S0220SD, C338S0220SD

Reexamination Certificate

active

08003016

ABSTRACT:
The present invention relates to a thermoplastic resin composition that includes a first phase polymeric material, at least one conductive filler and a second phase polymeric material where in the first phase polymer and second phase polymer are in co-continuous in nature and said conductive composition exhibits positive temperature coefficient behavior. The invention also relates to a method of making a co-continuous conductive composition that exhibits positive temperature coefficient behavior.

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Feng et al. “Carbon-Black Filler Immiscible Blends of Poly(Vinylidene Fluoride) and High Density Polyethylene: The Relationship Between Morphology and Positive and Negative Temperature Coefficient Effects,” Poly. Engr. and Sci. 39(7), pp. 1207-1215 (Jul. 1999).

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