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AssigneeE. I. Du Pont de Nemours and Company
InventorsVictor Filippovich Cherstkov, Nina Ivanova Delyagina, Richard E. Fernandez, Viacheslav A. Petrov, Weiming Qiu, Paul R. Resnick, Robert Clayton 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)CF2OSO2F, wherein R is a linear, branched, or cyclic fluoroalkyl group comprised of 1 to 10 carbon atoms and may contain ether oxygen.
A compound having the formula CH2═C(CF2OSO2F)2.
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 process comprising contacting CH2═C(R)CF3 with SO3 in the presence of a Lewis acid, wherein R is a linear, branched, or cyclic fluoroalkyl group comprised of 1 to 10 carbon atoms and may contain ether oxygen, to produce a CH2═C(R)CF3/SO3 adduct.
A process comprising contacting CH2═C(R)CF3 wherein R is CF3 with SO3 in the presence of a Lewis acid to produce a CH2═C(CF3)2/SO3 adduct.
A process comprising contacting CH2═C(R)CF2OSO2F with a nucleophile, wherein R is a linear, branched, or cyclic fluoroalkyl group comprised of 1 to 10 carbon atoms and may contain ether oxygen, to produce a substitution product.
A process comprising contacting CH2═C(CF2OSO2F)2 with a first nucleophile to produce a substitution product.
A process comprising contacting CH2═C(CF2OSO2F)2 with a first nucleophile and then with a second nucleophile, different from said first nucleophile, to produce a substitution product.
Copolymers of 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, and at least one other monomer.
Copolymers of 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, alkoxides, fluoroalkoxides, and perfluoroalkoxides, aryloxides, mercaptides, fluoromercaptides, perfluoromercaptides, secondary amines which may be fluorinated, azide, hydroxyalkoxides, ester alkoxides, and at least one other monomer.
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 andthiolmercaptides.
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.