Process for the preparation of granular silarylenesiloxane copol

Details Process for the preparation of granular silarylenesiloxane copol Process for the preparation of granular silarylenesiloxane copol

1981-01-16

1982-07-20

Marquis, Melvyn I.

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

Synthetic resins

From silicon reactant having at least one...

525477, 528 23, 528 33, 528 35, 528 43, C08G 7706

Patent

active

043407110

ABSTRACT:
A process for the preparation of curable high molecular weight silarylenesiloxane-polydiorganosiloxane copolymers (tough rubber) in a low density granular form by creating the conditions of mechanical shear during the recrystallization, or cooling stage, following the polymerization. A high shear mixer, for example dough mixer, can serve as the polymerization vessel. The granular product obtained is easily handled and can be compounded quickly and efficiently with fillers or process aids as needed for the production of extruded or molded products.

REFERENCES:
patent: 3803084 (1974-04-01), Schnurrbusch et al.
patent: 3959403 (1976-05-01), LaRochelle
patent: 3965134 (1976-06-01), LaRochelle

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