Process for preparing unsaturated fluoroelastomers

Details Process for preparing unsaturated fluoroelastomers Process for preparing unsaturated fluoroelastomers

1987-01-20

1988-05-03

Schofer, Joseph L.

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

Synthetic resins

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

5253262, 5253264, 5253591, 525374, 525379, C08F 800

Patent

active

047421266

ABSTRACT:
Double bonds in saturated fluoroelastomers consisting of copolymers of vinylidene fluoride with hexafluoropropene and/or chlorotrifluoroethylene, and optionally tetrafluoroethylene, are obtained by reacting the polymer in a solution of a water-insoluble solvent in the presence of an aqueous phase, an inorganic base, and a phase-transfer catalyst.

REFERENCES:
patent: 3252954 (1966-05-01), Calfee et al.
patent: 3560595 (1971-02-01), Phillips et al.

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