Method of manufacturing mixtures of polydiorganosiloxanes and fi

Details Method of manufacturing mixtures of polydiorganosiloxanes and fi Method of manufacturing mixtures of polydiorganosiloxanes and fi

1996-10-22

1998-02-24

Marquis, Melvyn I.

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...

524588, 524789, 524860, 26421112, 26421124, 264211, C08K 334

Patent

active

057213070

ABSTRACT:
A method for the preparation of a silicone rubber composition, a liquid polydiorganosiloxane (A), finely powdered silica (B), liquid polyorganosiloxane (C) and water (D) are introduced continuously into the raw material inlet of a biaxial continuous extruding and mixing machine. In the present method the liquid polydiorganosiloxane is introduced into the raw material inlet through the outer lumen of a double lumen tube and the finely powdered silica is introduced into the raw material inlet through the inner lumen of the double lumen tube. As a result, the finely powdered silica can be introduced rapidly without being scattered to the surrounding area and superior mixing of the two substances is achieved.

REFERENCES:
patent: 5227111 (1993-07-01), Brangers et al.
patent: 5531923 (1996-07-01), LeBlanc et al.
Encyclopedia of Polymer Science and Engineering, vol. 13, p. 316 (1988); vol. 15, pp. 204-207 (1989).

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