Rubber composition

Details Rubber composition Rubber composition

1990-01-26

1991-08-13

Schofer, Joseph L.

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...

524377, 524571, 524579, C08K 334

Patent

active

050397257

ABSTRACT:
The inventive rubber composition comprises (a) an EPM or EPDM rubber, (b) an organopolysiloxane, (c) a finely divided silica filler and (d) a polyoxyethylene glycol having a specified average molecular weight, this last component being the characteristic ingredient. By virtue of the unique formulation, the rubber composition is outstandingly free from the troubles that the surface of a metal mold, in which the rubber composition is repeatedly molded and vulcanized with heating to give vulcanized rubber articles, becomes stained so as to necessitate frequent cleaning works for continuing the molding process so that a great improvement can be obtained in the productivity in the manufacture of rubber articles.

REFERENCES:
patent: 3354138 (1967-11-01), Bun
patent: 4373048 (1983-02-01), Schubert et al.
patent: 4678828 (1987-07-01), Nakamura et al.
patent: 4812505 (1989-03-01), Topcik

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