Curable silicone rubber composition and method for preparing sil

Details Curable silicone rubber composition and method for preparing sil Curable silicone rubber composition and method for preparing sil

1995-04-12

1996-05-21

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...

524862, 524847, 528 15, C08K 334

Patent

active

055190820

ABSTRACT:
A curable silicone rubber composition contains (A) an organopolysiloxane raw rubber containing 0.01-1% by weight of vinyl and having a viscosity of 10.sup.3 -10.sup.6 poise at 25.degree. C., (B) an organopolysiloxane oil containing 0.1-10% by weight of vinyl and having a viscosity of 0.05-100 poise at 25.degree. C., (C) an organopolysiloxane copolymer composed mainly of a triorganosiloxy unit (M) and SiO.sub.2 unit (Q) in a molar ratio (M/Q) between 0.6 and 1.2 and containing 0.1-10% by weight of vinyl, (D) an organohydrogensiloxane containing at least three silylidyne groups, (E) a platinum catalyst, and (F) finely divided silica as essential components. The composition is hot air vulcanizable into a silicone rubber which is improved in hardness, modulus, tear strength and compression set.

REFERENCES:
patent: 5366809 (1994-11-01), Schmidt et al.

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