Coating processes – With post-treatment of coating or coating material – Heating or drying
Patent
1980-08-18
1982-08-31
Seccuro, Carman J.
Coating processes
With post-treatment of coating or coating material
Heating or drying
525198, 525199, 525194, 428422, C08L 2716, C08L 2706, C08L 3104
Patent
active
043472680
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: 2777783 (1957-01-01), Welch
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 et al., Rubber Chemistry and Technology, "Fluoroelastomers", pp. 619-653.
David Hudson, Inc.
Seccuro Carman J.
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