Fluoroelastomer having improved compression set resistance

Details Fluoroelastomer having improved compression set resistance Fluoroelastomer having improved compression set resistance

1983-08-15

1985-09-24

Wong, Jr., Harry

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

526249, C08F21422

Patent

active

045433941

ABSTRACT:
A peroxide curable fluoroelastomer composition wherein the composition comprises a tetrapolymer whose interpolymerized units consist essentially of units derived from: (1) about 30-40 weight percent vinylidene fluoride, (2) about 30-40 weight percent of the fluorine-containing monomers hexafluoropropylene or pentafluoropropylene, (3) about 25-35 weight percent tetrafluoroethylene and (4) up to 3 mole percent of units, based upon the tetrapolymer, derived from a bromine-containing olefin, with the proviso that enough of such units are present to provide 0.05 weight percent bromine in the tetrapolymer, the units of the bromine-containing olefin are derived from a compound having the formula CX.sub.2 .dbd.CX(CY.sub.2).sub.n (CZ.sub.2).sub.2 Br where X is hydrogen or fluorine, Y is hydrogen, fluorine or chlorine, Z is fluorine or chlorine and n is 0-5 and said fluoroelastomer composition contains at least 1 part per hundred parts tetrapolymer of trimethallylisocyanurate.

REFERENCES:
patent: 2944995 (1960-07-01), Dosmann et al.
patent: 3088938 (1963-05-01), Cluff
patent: 4035565 (1977-07-01), Apotheker et al.
patent: 4115481 (1978-09-01), Finlay et al.
patent: 4243770 (1981-01-01), Tatemoto et al.
patent: 4320216 (1982-03-01), Apotheker

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