Compositions based on elastomeric polymers of vinylindene fluori

Details Compositions based on elastomeric polymers of vinylindene fluori Compositions based on elastomeric polymers of vinylindene fluori

1995-05-05

1999-03-16

Tsang, Cecilia J.

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

Synthetic resins

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

C08C 1924, C08F 840

Patent

active

058831975

ABSTRACT:
The present invention relates to compositions based on elastomeric polymers of vinylidene fluoride, hexafluoropropene and optionally tetrafluoroethylene suitable for providing microcellular foamed vulcanized articles by extrusion or compression molding. In the case of the production of extruded articles based on vinylidene fluoride and hexafluoropropene copolymers, the compositions comprise: the copolymer, bisphenol AF, a quaternary phosphonium or aminophosphonium salt, azodicarbonamide, MgO, Ca(OH).sub.2, zinc stearate and a plasticizer, each of the components being contained in an exactly defined proportion.

REFERENCES:
patent: 3868337 (1975-02-01), Gros
patent: 4259463 (1981-03-01), Moggi et al.
patent: 4496682 (1985-01-01), Schmiegel

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