Self-regulating heating element and a process for the production

Details Self-regulating heating element and a process for the production Self-regulating heating element and a process for the production

1987-08-20

1990-03-13

Barr, Josephine

Compositions

Electrically conductive or emissive compositions

Elemental carbon containing

219549, 219553, 338 22SD, 524495, 524496, H01B 106

Patent

active

049081560

ABSTRACT:
A self-regulating heating element (1) comprising a crosslinked copolymer based on ethylene and a comonomer of vinyl acetate in which the proportion of vinyl acetate is less than 10% and more than 2% by weight, more especially from 9 to 2% by weight and, in practice, from 9 to 5% by weight, said copolymer containing from 13 to 30% by weight carbon black and having a ratio ##EQU1## of greater than 10.sup.4.

REFERENCES:
patent: 4150193 (1979-04-01), Burns
patent: 4388607 (1983-06-01), Toy et al.
patent: 4629869 (1986-12-01), Bronval
patent: 4696765 (1987-09-01), Kakizaki et al.

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