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AssigneeE.I. du Pont de Nemours and Company
InventorsVictor Cherstkov, Nina Delyagina, Richard Fernandez, Viacheslav Petrov, Weiming Qiu, Paul Resnick, Robert Wheland
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Hexafluoroisobutylene and its higher homologs are easily reacted with SO3 to give fluorosulfates of the formula CH2═C(R)CF2OSO2F, wherein R is a linear branched or cyclic fluoroalkyl group comprised of 1 to 10 carbon atoms and may contain ether oxygen. These compounds react under mild conditions with many nucleophiles to give CH2═C(R)CF2X, where X is derived from the nucleophile. This reaction provides a route to many substituted hexafluoroisobutylenes, which copolymerize easily with other fluoro- and hydrocarbon monomers such as vinylidene fluoride and ethylene.
A compound having the formula CH2═C(R)CF2X, wherein R is a linear, branched, or cyclic fluoroalkyl group comprised of 1 to 10 carbon atoms and may contain ether oxygen, and X is selected from the group consisting of hydride, halides except fluoride, cyanide, alkoxides, fluoroalkoxides, and perfluoroalkoxides, aryl oxides, fluoroaryloxides, and perfluoroaryloxides, mercaptides, fluoromercaptides, perfluoromercaptides, secondary amines which may be fluorinated, azide, cyanate, isocyanate, thiocyanate, hydroxyalkoxides, haloalkoxides, epoxy alkoxides, cyanoalkoxides, ester alkoxides, and thiolmercaptides.
A compound having the formula CH2═C(CF2X)CF2X′, wherein X and X′ are independently selected from the group consisting of hydride, halides except fluoride, cyanide, alkoxides, fluoroalkoxides, and perfluoroalkoxides, aryl oxides, fluoroaryloxides, and perfluoroaryloxides, mercaptides, fluoromercaptides, perfluoromercaptides, secondary amines which may be fluorinated, azide, cyanate, isocyanate, thiocyanate, hydroxyalkoxides, haloalkoxides, epoxy alkoxides, cyanoalkoxides, ester alkoxides and thiolmercaptides.
A compound having the formula CF2═C(R)CH2X, wherein R is a linear, branched, or cyclic fluoroalkyl group comprised of 1 to 10 carbon atoms and may contain ether oxygen, and X is selected from the group consisting of hydride, halides except fluoride, cyanide, alkoxides, fluoroalkoxides, and perfluoroalkoxides, aryl oxides, fluoroaryloxides, and perfluoroaryloxides, mercaptides, fluoromercaptides, perfluoromercaptides, secondary amines which may be fluorinated, azide, cyanate, isocyanate, thiocyanate, hydroxyalkoxides, haloalkoxides, epoxy alkoxides, cyanoalkoxides, ester alkoxides and thiolmercaptides.
A compound having the formula CF2═C(CF2X)CH2X′ wherein X and X′ are independently selected from the group consisting of hydride, halides except fluoride, cyanide, alkoxides, fluoroalkoxides, and perfluoroalkoxides, aryl oxides, fluoroaryloxides, and perfluoroaryloxides, mercaptides, fluoromercaptides, perfluoromercaptides, secondary amines which may be fluorinated, azide, cyanate, isocyanate, thiocyanate, hydroxyalkoxides, haloalkoxides, epoxy alkoxides, cyanoalkoxides, ester alkoxides, and thiolmercaptides.
Dependencies are inferred from the claim text.