Silicone rubber compositions and method for making

Details Silicone rubber compositions and method for making Silicone rubber compositions and method for making

1994-12-20

1996-03-12

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...

528 15, C08K 504

Patent

active

054986605

ABSTRACT:
To a silicone rubber composition including (A) a diorganopolysiloxane having an aliphatic unsaturated hydrocarbon group, (B) an organohydrogenpolysiloxane having at least two SiH groups in a molecule, and (C) a platinum catalyst, is added (D) an organic silicon compound of the following general formula (2): ##STR1## wherein R.sup.2, R.sup.5, and R.sup.6 are independently selected from monovalent hydrocarbon groups free of an aliphatic unsaturated bond, R.sup.3 is a monovalent hydrocarbon group, R.sup.4 is hydrogen or methyl, and n is an integer of 0 to 3. The composition has a long pot life after addition of curing components (B) and (C) and is extrusion moldable into bubble-free transparent parts. The composition is prepared by mixing component (A) with components (B) and (C) while adding component (D) thereto.

REFERENCES:
patent: 4670530 (1987-06-01), Beck
patent: 5276086 (1994-01-01), Arai et al.

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