Novel fluoroelastomer film compositions containing vinyl copolym

Details Novel fluoroelastomer film compositions containing vinyl copolym Novel fluoroelastomer film compositions containing vinyl copolym

1982-07-26

1983-08-02

Seccuro, Carman J.

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

Synthetic resins

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

525194, 524520, C08L 2716, C08L 2706, C08L 3104

Patent

active

043967442

ABSTRACT:
The invention herein disclosed provides a method for preparing fluoroelastomer film compositions including the steps of dissolving a fluoroelastomer gum selected from the group consisting of copolymers of vinylidene fluoride and hexafluoropropylene, and terpolymers of vinylidene fluoride, hexafluoropropylene and tetrafluoroethylene in a solvent, adding a vinyl copolymer to the gum solution, evaporating the solvent and leaving a film. A method is also provided for adhering fluoroelastomer film compositions, devoid of metallic oxides, to substrates which includes the steps of dissolving the fluoroelastomer gum in a solvent, adding a vinyl copolymer to the gum solution, coating the substrate with the fluoroelastomer gum-vinyl copolymer solution, evaporating the solvent and leaving a cured film firmly adhered to the substrate. The fluoroelastomer film compositions disclosed herein are also novel and can be used to coat a variety of substrates thereby providing other novel, useful articles.

REFERENCES:
patent: 2468054 (1949-04-01), Ford
patent: 2777783 (1957-01-01), Welch
patent: 2970988 (1961-02-01), Lo
patent: 3324069 (1967-06-01), Koblitz
patent: 3340222 (1967-09-01), Fang
Bowman, "Solution Coatings of VITON," duPont VITON Bulletin No. 16, 1966.
Hackett, "Adhering VITON to Metal During Vulcanization," duPont VITON Report VT-450.1.
Alexander, "A Capsule View of the A, B and E Types of VITON," duPont VITON Report VT-000.1 (R2).
Arnold, Barney and Thompson, Rubber Chemistry and Technology, "Fluoroelastomers", 619-653.

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