Abstract: The present invention relates to novel (per)fluoropolyether (PFPE) polymer derivatives, a method for their manufacture and their use for providing an anti-soiling coating.

Abstract: The present invention relates to novel (per)fluoropolyether (PFPE) polymer derivatives, a method for their manufacture and their use for providing an anti-soiling coating.

Abstract: The present invention relates to novel (per)fluoropolyether (PFPE) polymer derivatives, a method for their manufacture and their use for providing an anti-soiling coating.

Abstract: The present invention relates to novel (per)fluoropolyether (PFPE) polymer derivatives, a method for their manufacture and their use for providing an anti-soiling coating.

Abstract: The present invention relates to a watch bands made from a fluorinated polyurethane polymer comprising recurring units derived from at least one hydroxy-terminated (per)fluoropolyether polymer.

Abstract: A process for preparing perfluorovinylethers having general formula: RfO—CF?CF2??(IA) where Rf is a C1-C3 alkyl perfluorinated substituent, comprises the steps of: 1a) fluorinating olefins of formula: CY?Y?CY?Cl??(II) where Y, Y? and Y?, equal to or different from each other, are H, Cl, Br, and are not contemporaneously hydrogen; and obtaining fluorohalogencarbons of formula: FCY?Y—CY?ClF??(III) where Y, Y? and Y? are as above; 2a) dehalogenating or dehydrohalogenating fluorohalogencarbons (III) and obtaining fluorohalogenolefins of formula: FCYI?CYIIF??(IV) where YI and YII, equal to or different from each other, are H, Cl, Br and are not contemporaneously H; 3a) reacting a hypofluorite of formula RfOF and a fluorohalogenolefin (IV), and obtaining the fluorohalogenethers of formula: RfO—CFYI—CF2YII??(I) where YI, YII, equal to or different from each other, are Cl, Br, H and are not be contemporaneously H; and 4a) dehalogenating or dehydrohalogenating compounds (I) and obtaining perfluorov

Abstract: A process for preparing fluorovinylethers having general formula: RfO—CF?CF2??(IA) wherein Rf is a fluorinated or perfluorinated alkyl or cycloalkyl substituent; comprising the following reaction steps: 1) reaction of a hypofluorite; 2) dehalogenation or dehydrohalogenation of the fluorohalogenethers obtained in step 1) and obtainment of vinyl ethers; 3) fluorination with fluorine of the vinyl ethers and obtainment of fluorohalogenethers; and 4) dehydrohalogenation of the fluorohalogenethers and obtainment of the fluorovinylethers of formula (IV). The compounds of formula (IA) can be used, for example, in the preparation of various polymers, such as fluorinated elastomers and fluorinated thermoprocessable semicrystalline polymers.

Abstract: A process for preparing perfluorovinylethers having general formula: RfO—CF?CF2 ??(IA) wherein Rf is a C1-C3 alkyl perfluorinated substituent; comprising the following steps: 1a) fluorination with fluorine of olefins of formula: CY?Y?CY?Cl ??(II) wherein Y, Y? and Y?, equal to or different from each other, are H, Cl, Br, with the proviso that Y, Y? and Y? are not contemporaneously hydrogen; and obtainment of fluorohalogencarbons of formula: FCY?Y—CY?ClF ??(III) wherein Y, Y? and Y? are as above; 2a) dehalogenation or dehydrohalogenation of the fluorohalogencarbons (III) and obtainment of fluorohalogen olefins of formula: FCYI?CYIIF ??(IV) wherein YI and YII, equal to or different from each other, have the meaning of H, Cl, Br with the proviso that YI and YII are not both H; 3a) reaction between a hypofluorite of formula RfOF and a fluorohalogenolefin (IV), obtaining the fluorohalogenethers of formula: RfO—CFYI—CF2YII ??(I) wherein YI, YII, equal to or different from ea

Abstract: A process for preparing fluorovinylethers having general formula: RfO—CF?CF2 ??(IA) wherein Rf is a fluorinated or perfluorinated alkyl or cycloalkyl substituent; comprising the following reaction steps: 1) reaction of a hypofluorite of formula RfOF, wherein Rf is as above, with an olefin of formula: CY?Y?CY?CI ??(II) wherein Y, Y? and Y?, equal to or different from each other, are H, Cl, Br, with the proviso that Y, Y? and Y? are not contemporaneously hydrogen; 2) dehalogenation or dehydrohalogenation of the fluorohalogenethers obtained in step 1) and obtainment of vinyl ethers of formula: RfO—CYI?CYIIF ??(IV) wherein YI and YII, equal to or different from each other, have the meaning of H, Cl, Br with the proviso that YI and YII are not both H; 3) fluorination with fluorine of the vinyl ethers (IV) and obtainment of fluorohalogenethers of formula: RfO—CFYI—CF2YII ??(I) wherein YI, YII, equal to or different from each other, are Cl, Br, H with the proviso that YI and YII

Abstract: Electrolytic compositions comprising a perfluoropolyether additive of formula (I): wherein: d, e, f are integers; a, b, c can be zero or integers; being a+b+c+d+e+f such that the number average molecular weight ranges from 500 to 5×105; T are end groups —CF2X (X?F,CF3, Cl), —C3F7, —CF(CF3)COO?(1/n)Mn+, —CF2COO?(1/n) Mn+, —CF2C(O(1/n)Mn+)2CF3; Mn? is a cation having valence n=1-4.

Abstract: Electrolytic compositions comprising a perfluoropolyether additive of formula (I): 1

Abstract: Curable fluoroelastomeric compositions comprising: A) 100 phr (parts) of fluoroelastomeric copolymers based on vinylidenefluoride (VDF) copolymers and at least a partially or completely fluorinated comonomer having an ethylene unsaturation; B) 0.

Abstract: A process for preparing a solution and/or dispersion containing sulphonic (per)fluorinated ionomers having —SO3M functional groups, wherein M is selected from H, Li, Na, K, NR4 (R equal to or different from each other are selected from H, CH3, C2H5), characterized in that it dissolves the above defined ionomers at a temperature comprised between the room temperature and about 150° C., in a monophasic ternary mixture essentially constituted by water, by a C1-C4 alcohol and by a fluoro(poly)oxyalkylene having one hydrogen atom in at least a fluorinated end group; the dispersed polymer particle sizes are in the range 30-100 nm.