Extrudable silicone elastomer compositions

Details Extrudable silicone elastomer compositions Extrudable silicone elastomer compositions

1983-06-03

1984-01-24

Jacobs, Lewis T.

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

Synthetic resins

Processes of preparing a desired or intentional composition...

524862, 524906, C08L 8304

Patent

active

044278012

ABSTRACT:
This invention provides organopolysiloxane elastomers exhibiting a desirable combination of high durometer hardness, tensile strength and tear strength, and a level of heat stability sufficient to retain these properties following prolonged exposure to temperatures above 150.degree. C. The elastomers are prepared by curing a vinyl endblocked polydiorganosiloxane, an organopolysiloxane resin having a specified concentration of vinyl groups, a treated silica filler containing vinylsiloxy groups bonded to the silica particles and a organohydrogenpolysiloxane in the presence of a suitable platinum catalyst.

REFERENCES:
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patent: 3697473 (1972-10-01), Polmanteer et al.
patent: 3699073 (1972-10-01), Wada et al.
patent: 3884866 (1975-05-01), Jeram et al.
patent: 4077943 (1978-03-01), Sato et al.
patent: 4123604 (1978-10-01), Sandford
patent: 4162243 (1979-07-01), Lee et al.
patent: 4163081 (1979-07-01), Schulz
patent: 4329274 (1982-05-01), Faltynek

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