Fluoroelastomer composition

Details Fluoroelastomer composition Fluoroelastomer composition

2008-04-29

2008-04-29

Mulcahy, Peter D. (Department: 1796)

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...

C524S544000, C524S545000, C526S247000, C526S255000

Reexamination Certificate

active

11634556

ABSTRACT:
A fluoroelastomer composition, which comprises 100 parts by weight of vinylidene fluoride-perfluoro(methyl vinyl ether)-tetrafluoroethylene terpolymer or vinylidene fluoride-hexafluoropropene copolymer, and 10-50 parts by weight of liquid fluoroelastomer having a viscosity of 500 to 3,000 cps at 100° C., can be made cross-linkable or vulcanizable fluoroelastomer composition upon further addition of 0.5 to 5 parts by weight of an organic peroxide and 0.5 to 10 parts by weight of a polyfunctional unsaturated compound or further addition of 0.5 to 10 parts by weight of a polyol-based vulcanizing agent thereto. The fluoroelastomer composition can give a cross-linked or vulcanized product having a hardness (Durometer A) of not more than 50 and distinguished processability and compression set resistance characteristics.

REFERENCES:
patent: 3573976 (1971-04-01), Duane et al.
patent: 6864336 (2005-03-01), Kaspar et al.
patent: 2004/0037967 (2004-02-01), Feiring et al.
patent: 2004/0048983 (2004-03-01), Hochgesang et al.
patent: 4-229481 (1992-08-01), None
patent: 9-159027 (1997-06-01), None
patent: 2001-72856 (2001-03-01), None

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