C - Chemistry – Metallurgy – 08 – F
Patent
C - Chemistry, Metallurgy
08
F
117/153, 117/186
C08F 214/18 (2006.01) B05D 7/16 (2006.01) B05D 7/26 (2006.01) C08J 7/04 (2006.01) C08K 5/54 (2006.01) D06M 15/256 (2006.01)
Patent
CA 1189210
ABSTRACT OF THE DISCLOSURE The invention herein disclosed provides a method for preparing improved fluoroelastomer fill compositions including the steps of dissolving a fluoroelastomer gum selected from the group consisting of copolymers of vinyli- dene fluoride and hexafluoropropylene, and terpolymers of vinylidene fluoride, hexafluoropropylene and tetrafluoro- ethylene 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.
383238
Gowling Lafleur Henderson Llp
Hudson (david) Inc.
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