Polyfluoroallyloxy compounds, their preparation and copolymers therefrom
申请人:E. I. Du Pont de Nemours and Company
公开号:US04273729A1
公开(公告)日:1981-06-16
The reaction of a polyfluorocarbonyl compound such as a polyfluoroketone or polyfluorcarboxylic acid fluoride with fluoride ion and a polyfluoroallyl chloride, bromide or fluorosulfate produces a polyfluoroallyloxy carboxylic acid fluoride or sulfonyl fluoride, e.g., CF.sub.2 .dbd.CFCF.sub.2 OCF.sub.2 CF.sub.2 SO.sub.2 F. The polyfluoroallyloxy compounds copolymerize with ethylenically unsaturated monomers such as tetrafluoroethylene, chlorotrifluoroethylene or vinylidene fluoride to form polymers which are moldable, and in some cases electrically conducting or are water-wettable and dyeable.
Methods of making a polyfluorinated allyl ether and compounds relating to the methods
申请人:3M INNOVATIVE PROPERTIES COMPANY
公开号:US11292763B2
公开(公告)日:2022-04-05
A method includes combining first components including at least one of CF2═CF—CF2—OSO2Cl or CF2═CF—CF2—OSO2CF3, a polyfluorinated compound having at least one ketone or carboxylic acid halide, and fluoride ion to provide a compound comprising at least one perfluorinated allyl ether group. A method includes combining second components including B(OSO2Cl)3 and hexafluoropropylene to provide CF2═CF—CF2—OSO2Cl. Another method includes combining second components including M(OSO2CF3)3 and hexafluoropropylene at a temperature above 0° C. to provide CF2═CF—CF2—OSO2CF3, wherein M is Al or B. The compound CF2═CF—CF2—OSO2Cl is also provided.