Positive temperature coefficient polymer composition and...

Details Positive temperature coefficient polymer composition and... Positive temperature coefficient polymer composition and...

2005-04-06

2009-06-09

Kopec, Mark (Department: 1796)

Compositions

Electrically conductive or emissive compositions

C252S512000, C252S513000, C219S505000, C524S495000, C525S240000

Reexamination Certificate

active

07544311

ABSTRACT:
A PTC polymer composition contains: (a) a non-elastomeric polymer mixture in an amount from 20 wt % to 80 wt % based on the weight of the polymer composition; (b) a conductive particulate material in an amount from 20 wt % to 60 wt % based on the weight of the polymer composition; (c) a voltage resistance-enhancing agent that contains particulate metal oxide material in an amount from 1 wt % to 30 wt % based on the weight of the polymer composition; and (d) a polymer stabilizer that contains a thermoplastic elastomer in an amount from 1 wt % to 30 wt % based on the weight of the polymer composition.

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patent: 2004/0222406 (2004-11-01), Chen et al.
patent: 2003-318006 (2003-11-01), None

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