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 (per)fluorohalogenethers having general formula: wherein: A and A?, equal to our different from each other, are selected among Cl, Br, H; m=1, 2; n=0, 1; R1 is a fluorinated substituent, preferably perfluorinated, selected from the following groups: C1-C20 linear or branched alkylic; C3-C7 cycloalkylic; aromatic, C6-C10 arylalkyl; heterocyclic or C5-C10-alkylheterocyclic; preferably perfluoroalkyl; R? is as defined in the application; by reaction of carbonyl compounds having formula: wherein: R1 and n are as above; u=0, 1; R? is as defined in the application; in liquid phase, with elemental fluorine and with olefinic compounds of formula: CAF?CA?F2??(III) wherein A and A? are as above, at temperatures from ?120° C. to ?20° C., preferably from ?100° C. to ?40° C., optionally in the presence of an inert solvent under the reaction conditions.

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: A process for preparing (per)fluorohalogenethers having general formula: wherein: A and A?, equal to or different from each other, are selected among Cl, Br and H; m=1, 2; n=0, 1; R? is a C1 to C3 (per)fluoroalkyl substituent; R is a (per)fluoropolyether substituent; z and z? are 1 or zero, X1=F, CF3; by reaction of carbonyl compounds having formula: (R?)n—C(O)(F)q(CFX1(CF2)z(CH2)z?OR1)??(II) wherein: R? and n are as above; q=0, 1; X1=F or CF3; z=0 or 1; R1 is a (per)fluoropolyether substituent; in liquid phase, with elemental fluorine and with olefinic compounds of formula: CAF=CA?F2 ??(III) wherein A and A? are as above, at temperatures from ?120° C. to ?20° C., preferably from ?100° C. to ?40° C.

Abstract: A process for preparing (per)fluorohalogenethers having general formula: wherein: A and A?, equal to our different from each other, are selected among Cl, Br, H; m=1, 2; n=0, 1; R1 is a fluorinated substituent, preferably perfluorinated, selected from the following groups: C1-C20 linear or branched alkylic; C3-C7 cycloalkylic; aromatic, C6-C10 arylalkyl; heterocyclic or C5-C10-alkylheterocyclic; preferably perfluoroalkyl; R? is as defined in the application; by reaction of carbonyl compounds having formula: wherein: R1 and n are as above; u=0, 1; R? is as defined in the application; in liquid phase, with elemental fluorine and with olefinic compounds of formula: CAF?CA?F2??(III) wherein A and A? are as above, at temperatures from ?120° C. to ?20° C., preferably from ?100° C. to ?40° C., optionally in the presence of an inert solvent under the reaction conditions.

Abstract: A process for preparing (per)fluorohalogenethers containing the —SO2F group, having general formula (I): FSO2—R—CF2OCAF—CA?F2??(I) wherein: A and A?, equal to or different from each other, are Cl or Br; R has the following meanings: a (per)fluorinated, preferably perfluorinated, substituent, optionally containing one or more oxygen atoms; by reaction of carbonyl compounds having formula (II): FSO2—R—COF??(II) wherein R is as above; in liquid phase with elemental fluorine and with olefinic compounds having formula (III): CAF?CA?F??(III) wherein A and A? are as above, operating at temperatures from ?120° C. to ?20° C., optionally in the presence of a solvent inert under the reaction conditions.

Abstract: A process for preparing (per)fluorohalogenethers having general formula (II): R?CF2OCFA-CA?F2??(II) wherein:— A and A?, equal to or different from each other, are H, Cl or Br but they cannot be both H; R? has the following meanings: RO—, wherein R is a (per)fluorinated substituent, selected from the following groups: linear or branched C1–C20 alkyl; C3–C7 cycloalkyl; aromatic, C6–C10 arylalkyl or alkylaryl; C5–C10 heterocyclic or alkylheterocyclic; or a perfluoropolyether substituent T-Rf— wherein T=—OCF2OCFA-CA?F2, —OCF2XI, wherein XI=F, CF3, Cl; Rf is a perfluorooxyalkylene chain; by reaction of carbonyl compounds having formula R?COF (III) wherein R?=RO—, or R?=Q-Rf— wherein Q=—OCOF, —OCF2XI; in liquid phase with elemental fluorine and with olefinic compounds having formula CAF=CA?F (IV), at temperatures from ?120° C. to ?20° C.

Abstract: Amorphous perfluorinated copolymers, comprising cyclic perfluorinated units deriving from at least two different perfluorinated comonomers, optionally with units deriving from a perfluorinated monomer containing at least one olefinic unsaturation (perfluoroolefin), or comprising cyclic perfluorinated units and units deriving from a perfluorinated monomer containing at least one olefinic unsaturation, said perfluorinated copolymers having the following combination of properties: substantial absence of unstable polar end groups, polymer Tg higher than 120° C., narrow monomeric composition distribution.

Abstract: A process for preparing (per)fluorohalogenethers having general formula: wherein: A and A?, equal to or different from each other, are selected among Cl, Br and H; m=1, 2; n=0, 1; R? is a C1-C3 (per)fluoroalkyl substituent; R is a (per)fluoropolyether substituent; z and z? are 1 or zero, X1=F, CF3; by reaction of carbonyl compounds having formula: (R?)n—C(O)(F)q(CF2ORI) ??(II) wherein: R? and n are as above; q=0, 1; RI is a (per)fluoro-polyether substituent; in liquid phase, with elemental fluorine and with olefinic compounds of formula: CAF=CA?F2 ??(III) wherein A and A? are as above, at temperatures from ?120° C. to ?20° C., preferably from ?100° C. to ?40° C.

Abstract: Amorphous perfluorinated copolymers, comprising cyclic perfluorinated units deriving from at least two different perfluorinated comonomers, optionally with units deriving from a perfluorinated monomer containing at least one olefinic unsaturation (perfluoroolefin), or comprising cyclic perfluorinated units and units deriving from a perfluorinated monomer containing at least one olefinic unsaturation, said perfluorinated copolymers having the following combination of properties: substantial absence of unstable polar end groups, polymer Tg higher than 120° C., narrow monomeric composition distribution.

Abstract: A process for preparing (per)fluorohalogenethers having general formula (I): (R)nC(F)mOCAF—CA′F2  (I) wherein: A and A′, equal to or different the one from the other, are Cl or Br or one is selected from A and A′ and hydrogen and the other is halogen selected from Cl, Br; R═F, or a fluorinated, preferably perfluorinated, substituent, selected from the following groups: linear or branched C1-C20 alkyl more preferably C1-C10; C3-C7 cycloalkyl; aromatic, C6-C10 arylalkyl, alkylaryl; C5-C10 heterocyclic or alkylheterocyclic; when R is fluorinated or perfluorinated alkyl, cycloalkyl, arylalkyl, alkylaryl, it can optionally contain in the chain one or more oxygen atoms; when R is fluorinated it can optionally contain one or more H atoms and/or one or more halogen atoms different from F: n is an integer and is 1 or 2; m=3-n; by reaction of carbonyl compounds having formula (II): (R)pC(F)q(O)  (II) wherein: p is an integer and is 1 or 2; q is an integer a

Abstract: Amorphous perfluorinated or fluorinated polymers containing an amount lower than 0.

Abstract: Amorphous perfluorinated copolymers, comprising cyclic perfluorinated units deriving from at least two different perfluorinated comonomers, optionally with units deriving from a perfluorinated monomer containing at least one olefinic unsaturation (perfluoroolefin), or comprising cyclic perfluorinated units and units deriving from a perfluorinated monomer containing at least one olefinic unsaturation, said perfluorinated copolymers having the following combination of properties: substantial absence of unstable polar end groups, polymer Tg higher than 120° C., narrow monomeric composition distribution.

Abstract: A process for preparing (per)fluorohalogenethers containing the —SO2F group, having general formula (I):

Abstract: A process for preparing (per)fluorohalogenethers having general formula (II):

Abstract: A process for preparing (per)fluorohalogenethers having general formula (I):

Abstract: Amorphous (per) fluorinated polymers containing an amount lower than 0.05 mmoles/kg polymer of each of the following ionic end groups: COF, COOH, their amidic derivatives, esters or salts, when the used determination method for said end groups is the IR spectroscopy by Nicolet® Nexus FT-IR equipment (256 scannings, resolution 2 cm−1).

Abstract: Amorphous perfluorinated copolymers, comprising cyclic perfluorinated units deriving from at least two different perfluorinated comonomers, optionally with units deriving from a perfluorinated monomer containing at least one olefinic unsaturation (perfluoroolefin), or comprising cyclic perfluorinated units and units deriving from a perfluorinated monomer containing at least one olefinic unsaturation, said perfluorinated copolymers having the following combination of properties: