Heat-curable silicone rubber compositions

Details Heat-curable silicone rubber compositions Heat-curable silicone rubber compositions

1975-04-01

1976-04-13

Jacobs, Lewis T.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

260825, C08L 8304

Patent

active

039502996

ABSTRACT:
Silicone rubber compositions comprising a diorganopolysiloxane having localized vinyl group distribution, a silica filler with large specific surface area and a curing agent, e.g., an organic peroxide, the diorganopolysiloxane being prepared by the block-copolymerization of a hydroxy-endblocked diorganopolysiloxane without unsaturation and a chlorine-endblocked vinyl-containing diorganopolysiloxane by the dehydrochlorination-condensation. Cured elastomers from silicone rubber compositions have very much improved tear strength with the other properties being as good as those of the conventional silicone rubber elastomers.

REFERENCES:
patent: 3328323 (1967-06-01), Vaughn

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