Devolatilized room temperature vulcanizable silicone rubber comp

Details Devolatilized room temperature vulcanizable silicone rubber comp Devolatilized room temperature vulcanizable silicone rubber comp

1981-04-03

1982-10-26

Briggs, Sr., Wilbert 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...

277DIG6, 528 17, 528 18, 528 33, 528 34, 528501, 525477, 524731, C08L 3306, C08G 7734

Patent

active

043561160

ABSTRACT:
A devolatilized room temperature vulcanizable silicone rubber composition comprising a silanol polymer, a plasticizing fluid, a cross-linking agent, a curing promoter and optionally, a filler wherein the plasticizing fluid and the silanol polymer are devolatilized prior to being mixed to form the room temperature vulcanizable silicone rubber composition by heating them at temperatures of at least 200.degree. C. under vacuum for at least 5 minutes. If there is utilized a filler and the filler is treated with cyclopolysiloxanes or silazanes, then preferably the filler is also devolatilized.

REFERENCES:
patent: 3382205 (1968-05-01), Beers
patent: 3635743 (1972-01-01), Smith
patent: 3813364 (1974-05-01), De Zuba et al.
patent: 4153501 (1979-05-01), Fink et al.
patent: 4250290 (1981-02-01), Peterson

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