Rubber composition

Details Rubber composition Rubber composition

1987-04-06

1987-12-22

Lilling, Herbert 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...

523213, 524534, 524547, 525102, 525105, C08K 336, C08L 8306, C08L 700, C08L 8304

Patent

active

047147334

ABSTRACT:
The rubber composition is formulated with (A) a combination of an ethylene-propylene copolymeric rubber and an organopolysiloxane having at least two alkenyl groups per molecule as the polymeric base, (B) a reinforcing silica filler, (C) an alkoxysilane compound and (D) a thiocarbamyl-containing organosilane compound. The rubber composition can be vulcanized with an organic sulfur compound or organic peroxide as the vulcanizing agent to give a vulcanizate having quite satisfactory mechanical properties including, in particular, greatly improved heat resistance and greatly decreased permanent compression set even without using carbon black as the reinforcing filler. The omission of carbon black in the formulation gives an advantage that the rubber may be colored in any light color.

REFERENCES:
patent: 3654215 (1972-04-01), Goossens
patent: 3929718 (1975-12-01), Kratel et al.
patent: 4201698 (1980-05-01), Itoh et al.

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