Heat-vulcanizable organopolysiloxane compositions

Details Heat-vulcanizable organopolysiloxane compositions Heat-vulcanizable organopolysiloxane compositions

1987-01-08

1988-11-01

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...

524436, 524779, 524785, 524788, 524786, 524860, 525479, C08K 318

Patent

active

047821078

ABSTRACT:
Heat-vulcanizable organopolysiloxane compositions, adopted for curing into silicone elastomers having improved reversion and oil resistance and useful, e.g., as seals in contact with hot oils, comprise at least one diorganopolysiloxane resin (A) having a viscosity of greater than 1,000,000 mPa.s at 25.degree. C., a reinforcing and/or semireinforcing filler material (B), an organic peroxide (C), an organosilicon compound (D) containing at least one acryloyloxyalkyl or methacryloyloxyalkyl group bonded to a silicon atom, and (E) at least one oxide or hydroxide of an alkaline earth metal.

REFERENCES:
patent: 3261801 (1966-07-01), Wormuth
patent: 3379607 (1968-04-01), Foster et al.
patent: 3514424 (1970-05-01), Noble et al.
patent: 3711520 (1973-01-01), Pfeifer et al.
patent: 3865778 (1975-02-01), Christe
patent: 4202812 (1980-05-01), Murray
patent: 4301056 (1981-11-01), Patzke et al.

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