High strength, heat curable polyorganosiloxane elastomer composi

Details High strength, heat curable polyorganosiloxane elastomer composi High strength, heat curable polyorganosiloxane elastomer composi

1983-06-23

1984-04-24

Marquis, Melvyn I.

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...

524860, 525477, 528 24, 528 32, 528 33, C08L 5702

Patent

active

044449402

ABSTRACT:
This invention provides heat curable compositions comprising a high viscosity, peroxide curable polydiorganosiloxane, a relatively low viscosity liquid diorganoalkenylsiloxy endblocked polydiorganosiloxane, a reinforcing filler and an effective amount of a vinyl specific organic peroxide. The tensile and recovery properties of the cured elastomer are optimized when the concentration of diorganoalkenylsiloxy groups on the liquid polydiorganosiloxane relative to the concentration of repeating units in the peroxide curable polydiorganosiloxane is within specified limits.

REFERENCES:
patent: 2803619 (1957-08-01), Dickmann
patent: 2819236 (1958-01-01), Dickmann
patent: 3219726 (1965-11-01), Bailey et al.
patent: 3341490 (1967-09-01), Burdick et al.
patent: 3436366 (1969-04-01), Modic
patent: 3652475 (1972-03-01), Wada et al.
patent: 4355121 (1982-10-01), Evans

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