Abstract: .beta.-Substituted polyfluoroethyl compounds, process for the preparation thereof, copolymers thereof, compound intermediates, and process therefor. The copolymers are useful as ion exchange resins or structural foams.

Abstract: Alkyl perfluoro-.omega.-(2-iodoethoxy) compounds, vinyl ethers made therefrom, and a process for preparing the iodo-compounds. The vinyl ether monomers when copolymerized with halogenated 1-olefins are useful to form elastomers, rigid articles, or membranes and films having ion-exchange properties.

Abstract: .beta.-substituted polyfluoropropionate salts, derivatives and copolymers and processes for the preparation thereof.

Abstract: Perfluoroglycidyl ethers of the formula ##STR1## are prepared by epoxidation of a perfluoroallyl ether of the formulaCF.sub.2 .dbd.CFCF.sub.2 OR.sub.F.The glycidyl ethers are useful as monomers for preparing polymers which are useful as stable oils and greases. Polymers containing functional moieties which provide crosslinking or cure sites are stable elastomeric materials useful as sealants, caulks, and fabricated objects.

Abstract: Perfluoroglycidyl ethers of the formula ##STR1## are prepared by epoxidation of a perfluorodiallyl ether of the formulaCF.sub.2 =CFCF.sub.2 OR.sub.F.The glycidyl ethers are useful as monomers for preparing polymers which provide crosslinking or cure sites and are stable elastomeric materials useful as sealants, caulks, and fabricated objects.

Abstract: Perfluoroglycidyl ethers of the formula ##STR1## are prepared by epoxidation of a perfluorodiallyl ether of the formula:CF.sub.2 .dbd.CFCF.sub.2 OR.sub.F.The glycidyl ethers are useful as monomers for preparing polymers which provide crosslinking or cure sites and are stable elastomeric materials useful as sealants, caulks, and fabricated objects.

Abstract: Perfluoroglycidyl ethers of the formula: ##STR1## are prepared by epoxidation of a perfluoroallyl ether of the formula:CF.sub.2 .dbd.CFCF.sub.2 OR.sub.F.The glycidyl ethers are useful as monomers for preparing polymers which are useful as stable oils and greases. Polymers containing functional moieties which provide crosslinking or cure sites are stable elastomeric materials useful as sealants, caulks, and fabricated objects.

Abstract: The reaction of a polyfluorocarbonyl compound such as a polyfluoroketone or polyfluorocarboxylic acid fluoride with fluoride ion and a polyfluoroallyl chloride, bromide or fluorosulfate produces a polyfluoroallyloxy compound, 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.

Abstract: Ketoester of the formula ##STR1## .alpha.-carboxylate-.omega.-acyl fluoride of the formula ##STR2## vinyl ether of the formula ##STR3## divinyl ether of the formula ##STR4## allyl ether of the formula ##STR5## and film-forming copolymers, useful as molding resins, of the vinyl ether and/or the divinyl ether or the allyl ether and a fluorinated vinyl monomer, for example, tetrafluoroethylene, wherein, in the above formulas, n is 0 to 6, p is 0 to 7, X is CO.sub.2 M, CO.sub.2 R, CO.sub.2 H, CONH.sub.2, COF, COCl or CN, M is alkali metal, ammonium or quaternary ammonium and R is C.sub.1-8 alkyl, selected copolymers, after hydrolysis, being water-wettable and dyeable, exhibiting ion-exchange properties and being useful in curable fluoroelastomer compositions and, in film form, as the membrane in a chloroalkali electrolysis cell.

Abstract: Carboxylic ester and acyl fluoride groups are interchanged in the presence of a metal fluoride catalyst or a metal fluoride/strong sulfonic acid catalyst combination to produce fluorinated mono- and diacyl fluorides.

Abstract: Compounds of the structure ##STR1## wherein X is --F or Cl and each R is independently --H, --CH.sub.3, --C.sub.2 H.sub.5, --CH.sub.2 CH.sub.2 CH.sub.3, --CH.sub.2 CH.sub.2 CH.sub.2 CH.sub.3 or M where M is an alkali metal, an alkaline earth metal, ammonium or a quaternary ammonium are disclosed. The above compounds are prepared by treating a compound of the structure ##STR2## where each R.sup.1 is independently --CH.sub.3, --C.sub.2 H.sub.5, --CH.sub.2 CH.sub.2 CH.sub.3 or --CH.sub.2 CH.sub.2 CH.sub.2 CH.sub.3 ; or ##STR3## with a strong protic acid, followed, as desired, by base hydrolysis to form carboxylate salts (R.dbd.M).

Abstract: The reaction of a polyfluorocarbonyl compound such as a polyfluoroketone or polyfluorocarboxylic acid fluoride with fluoride ion and a polyfluoroallyl chloride, bromide or fluorosulfate produces a polyfluoroallyloxy compound, e.g., CF.sub.2 .dbd.CFCF.sub.2 OCF.sub.2 CF.sub.3. 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.

Abstract: The reaction of a polyfluorocarbonyl compound such as a polyfluoroketone or polyfluorocarboxylic acid fluoride with fluoride ion and a polyfluoroallyl chloride, bromide or fluorosulfate produces a polyfluoroallyloxy carboxylic acid or ester, e.g., CF.sub.2 .dbd.CFCF.sub.2 OCF.sub.2 CF.sub.2 COOH. 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.

Abstract: 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.

Abstract: The reaction of a polyfluorocarbonyl compound such as a polyfluoroketone or polyfluorocarboxylic acid fluoride with fluoride ion and a polyfluoroallyl chloride, bromide or fluorosulfate produces a polyfluoroallyloxy compound, e.g., CF.sub.2 .dbd.CFCF.sub.2 OCF.sub.2 CF.sub.2 CN. 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 waterwettable and dyeable.

Abstract: Fluorovinyl ether polymers consisting essentially of 60 to 99.9 mole percent of monomeric units --CF.sub.2 CFY-- and 0.1 to 40 mole percent of the structural units ##STR1## wherein Y is F, H, Cl, Br, R.sub.f or OR.sub.f, R.sub.f is perfluoroalkyl, R is alkyl, Q is F or OR, and m is 0 or 1, are prepared by contacting a fluoropolymer of the formula (CF.sub.2 CFY).sub.x wherein at least 1% of the Y's are reactive sites selected from the group consisting of H, Cl and Br, with an alkali or alkaline earth metal alkoxide.Electrolytic cell diaphragms are prepared by forming the above fluorovinyl ether polymer and fibrous material into a diaphragm, heating the diaphragm thereby converting alkyl ether groups to carbonyl groups, and treating with an alkali metal hydroxide thereby converting carbonyl groups to carboxylate ion groups.

Abstract: Perfluoroallyl fluorosulfate is prepared by reacting hexafluoropropene with sulfur trioxide in the presence of boric oxide, boron trichloride, boron trifluoride tri(lower alkyl) borate, boron oxychloride or boron oxyfluoride.

Abstract: 2-Ketopentafluoropropanesulfonic acid is obtained as a product of the reaction of sulfur trioxide and ethyl pentafluoroisopropenyl ether or by transesterification from corresponding esters. Similar sulfonic acids may be obtained by the latter process. The new compounds are useful as monomers for producing polymers, particularly moldable, dyeable, fluoropolymers, and as cationic initiators, e.g., for tetrahydrofuran polymerization.

Abstract: 2-Ketopentafluoropropanesulfonic acid is obtained as a product of the reaction of sulfur trioxide and ethyl pentafluoroisopropenyl ether or by transesterification from corresponding esters. Similar sulfonic acids may be obtained by the latter process. The new compounds are useful as monomers for producing polymers, particularly moldable, dyeable, fluoropolymers, and as cationic initiators, e.g., for tetrahydrofuran polymerization.

Abstract: Novel .beta.-carbonylpolyfluoroalkyl sulfonate esters, e.g., ##STR1## are prepared by reacting SO.sub.3 with the corresponding acyclic fluorovinyl esters, e.g., CF.sub.3 CF.dbd.CFOCH.sub.3, at a temperature of about -40.degree. to 110.degree. C. These esters are useful as very active cationic initiators, e.g., for the polymerization of tetrahydrofuran.