Method for preparing heat-curable silicone rubber compounds

Details Method for preparing heat-curable silicone rubber compounds Method for preparing heat-curable silicone rubber compounds

1998-06-27

1999-12-14

Cain, Edward J.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

At least one aryl ring which is part of a fused or bridged...

523346, 523351, 523353, 524493, C08K 300

Patent

active

060019174

ABSTRACT:
In a first step, basic components including (A) 100 parts by weight of an organopolysiloxane gum, (B) 5-100 parts by weight of a reinforcing silica filler, and (C) 0.1-30 parts by weight of a processing aid are fed batchwise to a closed mixer for mixing them at a temperature of room temperature to 150.degree. C. In a second step, the mixture is fed into a kneader/mixer for heat treating at a temperature of 150-250.degree. C. The first step achieves quick dispersion and cooperates with the second step to form a heat-curable silicone rubber compound in an efficient manner.

REFERENCES:
patent: 3951389 (1976-04-01), Porter
patent: 4300841 (1981-11-01), Richards

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