Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – At least one aryl ring which is part of a fused or bridged...
Patent
1980-08-18
1982-04-06
Morgenstern, Norman
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
At least one aryl ring which is part of a fused or bridged...
156326, 427386, 4273885, 4273891, 4273898, 4273935, 4274071, 4274072, 525104, 524546, 427387, B05D 302
Patent
active
043236030
ABSTRACT:
The invention herein disclosed provides a method for preparing improved 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 silane compound to the gum solution and curing the fluoroelastomer gum with a silane in the absence of metallic oxides. 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 silane compound to the gum solution, coating the substrate with the fluoroelastomer gum-silane solution, evaporating the solvent and leaving a film firmly adhered to the substrate. Another method includes the steps of first coating a substrate with a silane compound, then applying a fluoroelastomer gum solution over the silane coated substrate, evaporating the solvent and leaving a 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: 2979418 (1961-04-01), Dipner
patent: 3379607 (1968-04-01), Foster et al.
patent: 4143204 (1979-03-01), Fang
J. Bowman, "Solution Coatings of Viton", (DuPont Viton Bulletin No. 16, 1966).
E. T. Hackett, Jr., "Adhering `Viton` to Metal During Vulcanization", DuPont Viton Report VT-450.1.
J. E. 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.
Morgenstern Norman
Page Thurman K.
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