Semiconductive silicone rubber compositions and semiconductive s

Details Semiconductive silicone rubber compositions and semiconductive s Semiconductive silicone rubber compositions and semiconductive s

1998-05-26

2000-01-11

Kopec, Mark

Compositions

Electrically conductive or emissive compositions

Elemental carbon containing

524496, 428 369, 428447, 492 56, 492 59, H01B 124, B25F 502, C08K 304

Patent

active

060132019

ABSTRACT:
In a silicone rubber composition comprising an organopolysiloxane having at least two aliphatic unsaturated groups and a curing agent, thermal black and/or furnace black having a primary particle diameter of 50-500 nm and a DBP oil absorption of 20-50 cc/100 g is blended. There may be further blended an organopolysiloxane having an ionic group-bearing portion as an antistatic agent and/or a hydrocarbon insulating oil. The composition has a stable resistivity in the semiconductive region and thus is useful as semiconductive rolls.

REFERENCES:
patent: 5135980 (1992-08-01), Watanabe
patent: 5164443 (1992-11-01), Watanabe
patent: 5449714 (1995-09-01), Inoue et al.
patent: 5725922 (1998-03-01), Nakamura et al.

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