Free-radical modified carbon black filled polypropylenes

Details Free-radical modified carbon black filled polypropylenes Free-radical modified carbon black filled polypropylenes

1989-03-03

1992-05-26

Barr, Josephine

Compositions

Electrically conductive or emissive compositions

Elemental carbon containing

252500, 252510, H01B 106

Patent

active

051165406

ABSTRACT:
Peroxide-provided free-radical molecular weight distribution narrowing of polypropylenes in the compounding stage of making conductive polypropylenes yields carbon black filled polypropylenes with improved rheological properties, surface conductivity, appearance, and surface characteristics with mechanical and physical properties similar to prior conductive polypropylenes.

REFERENCES:
patent: 3953655 (1976-04-01), Steinkamp et al.
patent: 4395362 (1983-07-01), Satoh et al.
patent: 4451589 (1984-05-01), Morman et al.
patent: 4717505 (1988-01-01), Delphin et al.
patent: 4731199 (1988-03-01), Matsuo et al.
patent: 4734450 (1988-03-01), Kawai et al.

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