Adhesive composition for electrical PTC heating device

Details Adhesive composition for electrical PTC heating device Adhesive composition for electrical PTC heating device

2005-02-08

2005-02-08

Paschall, Mark (Department: 3742)

Electric heating

Heating devices

With power supply and voltage or current regulation or...

C219S504000, C219S536000, C428S317700, C428S3550RA

Reexamination Certificate

active

06852955

ABSTRACT:
The invention relates to an electrically and thermally conductive adhesive composition for cementing together at least one metallized (e.g. aluminized or silvered) surface of a positive temperature coefficient (PTC) element to at least one metallic (e.g. aluminum) electrode, in the manufacture of PTC thermistor devices which are potentially capable of operating in a working temperature range not less than −55° C. to +300° C. and for at least 30,000 hours. The composition comprises, as the adhesive component, a curable silicone (e.g. silicone rubber) prepolymer, as well as finely divided silicon carbide and finely-divided silicon, and preferably also a finely-divided metallic powder.

REFERENCES:
patent: 4352008 (1982-09-01), Hofer et al.
patent: 4414052 (1983-11-01), Habata et al.
patent: 5562844 (1996-10-01), Bohlender et al.
patent: 5608267 (1997-03-01), Mahulikar et al.
patent: 5756215 (1998-05-01), Sawamura et al.
patent: 6005182 (1999-12-01), Imanishi et al.
patent: 6496373 (2002-12-01), Chung

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