Abstract: The process includes providing an aqueous mixture including perfluorinated monomers, a fluoroalkyl sulfinic acid or salt thereof, and an oxidizing agent capable of oxidizing the fluoroalkyl sulfinic acid or salt thereof and polymerizing the perfluorinated Nmonomers under free radical conditions to provide an aqueous dispersion of the fluoropolymer. The fluoroalkyl group has from one to three carbon atoms. The amount of perfluorooctanoic acid or salt thereof in the aqueous dispersion of the fluoropolymer as polymerized is not more than 25 nanograms per gram of the fluoropolymer. A fluoropolymer made by the process is also described.

Abstract: A curable composition comprising a fluorinated amorphous fluoropolymer, and a blend of polysulfonamide and polyol crosslinking agents.

Abstract: Provided is a curable composition comprising a partially fluorinated fluoropolymer, optionally an organo-onium accelerator an acid acceptor; and a crosslinking component of the formula.

Abstract: Fluoropolymer compositions containing glass microspheres are described. The glass microspheres are surface-treated with functional, fluorinated silane compounds of the formula X—Rf—(O)p—(CH2)m—Si—Y3, wherein X is selected from the group consisting of CF2?CF—O—, CH2?CH—, CH2?CHCH2—, CH2?CHCH2—O—, and CH2?CHCH2—O—CH2—.

Abstract: Presently described is a monomer having the formula: wherein n ranges from 2 to 8; Y is F or CmF2m+1; a is 0, or averages 1 to 2; m is independently 1, 2, 3, or 4; and X is F or OH. Also described is a method of making such monomer, various compounds prepared during while making the monomer, fluoropolymers comprising polymerized units of such monomer, fuel cell membranes, membrane electrode assemblies, and methods of making fluoropolymers.

Abstract: Described herein are compounds according to Formula (I) wherein Rf is a perfluorinated divalent group comprising 2 to 12 carbon atoms; and Z is selected from —CH?CH2, and —CH2CH?CH. A method of making the compound from a functionalized vinyl ether and ammonia is disclosed. In one embodiment, the functionalized triazine-containing compound is used in the polymerization of a fluoropolymer. In another embodiment, the functionalized triazine-containing compound is used in a curable fluoropolymer composition and cured to form articles.

Abstract: Described herein are compounds according to Formula (I) wherein each Rf is independently selected from a perfluorinated divalent group comprising 2 to 12 carbon atoms; and m is an integer independently selected from 1 to 3. A method of making the compound from a hydroxy-containing vinyl ether and excess ammonia is disclosed. In one embodiment, the hydroxy-functionalized triazine compound is used in a curable fluoropolymer composition and cured to form articles.

Abstract: Described herein is method of making branched perfluorinated compounds, specifically (CF3)2CFCF(CF3)OCF(CF3)C(?O)F and (CF3)2CFCF(CF3)OCF?CF2. Also disclosed herein is a fluoropolymer derived from the branched perfluorovinyl ether monomer and methods of making the fluoropolymer.

Abstract: The composition includes a curable fluoropolymer having nitrogen-containing cure sites and a curative including an organo onium cation and an anion represented by Formula (I) or Formula (II). The composition is free of metal cations or has not more than 20 parts per million metal cations and free of silicon dioxide or has less than 0.5 percent by weight silicon dioxide, based on the total weight of the composition. In some cases, the composition consists of the curable fluoropolymer and the curative. Shaped articles including the composition, a fluoroelastomer prepared by curing the composition, a method of making a fluoroelastomer article, and a process for making the composition are also described.

Abstract: Functional, partially-fluorinated silane compound according to Formula (I): wherein: X is CH2=CH— or CHCH2—; R1 and R2 are linear or branched alkylenes having 1 to 4 carbon atoms; Rf is a perfluoro(alkylene) group having 1 to 8 carbon atoms and, optionally, at least one catenary heteroatom selected from the group consisting of O and N; c is equal to the number of carbon atoms in X; and Y is —Cl or —OR, wherein R is a linear or branched alkyl having 1 to 4 carbon atoms. In some embodiments, Y is —O(CH2)xCH3 wherein x is an integer from 0 to 3 are described.

Abstract: Described herein is a perfluoropolymer and compositions therefrom. The perfluoropolymer is derived from: (a) no more than 88 mol % tetrafluoroethylene monomer; and (b) a complementary amount of a perfluoro (cycloaliphatic methyl vinyl ether) monomer, and has substantially no melting point.

Abstract: Articles comprising a fluoropolymer-containing composition bonded to a silicone polymer-containing composition are described, where at least one of the compositions comprise a partially-fluorinated silane bonding agent. Methods of preparing such articles, and exemplary articles such as fuel hoses are also described.

Abstract: Described herein is a functionalized oligomeric compound, which can be polymerized into a peroxide curable highly fluorinated polymer. The functionalized oligomeric compound is at least one of a monofunctional compound of formula (I) R-L-X having a number average molecular weight of 1000-16,000 g/mol; or a difunctional compound of formula (II) is R1-(L-X1)2 having a number average molecular weight of 1000-6000 g/mol; where: X comprises at least one of: —CH?CH2, —CH2CH?CH2, —OCH?CH2, —OCH2CH?CH2, —OCH2C(CH3)?CH2, —C(CH3)?CH2, and —OCF?CF2; X1 comprises at least one of: —CH?CH2, —CH2CH?CH2, —OCH?CH2, —OCH2CH?CH2, —OCH2C(CH3)?CH2, and —C(CH3)?CH2; L comprises at least one of a bond, —CH2OC(?O)—, —CH2OC(?O)NHCH2CH2OC(?O)—, and —C(?O)NHCH2CH2OC(?O)—; R is a monovalent perfluoro polyether alkyl group; and R1 is a divalent perfluoro polyether alkylene group.

Abstract: A curable composition is disclosed comprising: (i) a partially fluorinated fluoropolymer, wherein the partially fluorinated amorphous fluoropolymer comprises carbon-carbon double bonds or is capable of forming carbon-carbon double bonds along the partially fluorinated amorphous fluoropolymer; and (ii) a crosslinking component comprising a fluorinated sulfonamide alcohol of the formula I.

Abstract: Articles comprising a fluoropolymer-containing composition bonded to a silicone polymer-containing composition are described, where at least one of the compositions comprise a partially-fluorinated silane bonding agent. Methods of preparing such articles, and exemplary articles such as fuel hoses are also described.

Abstract: Functional, partially-fluorinated silane compound according to Formula (I): wherein: X is CH2=CH— or CHCH2—; R1 and R2 are linear or branched alkylenes having 1 to 4 carbon atoms; Rf is a perfluoro(alkylene) group having 1 to 8 carbon atoms and, optionally, at least one catenary heteroatom selected from the group consisting of O and N; c is equal to the number of carbon atoms in X; and Y is —Cl or —OR, wherein R is a linear or branched alkyl having 1 to 4 carbon atoms. In some embodiments, Y is —O(CH2)xCH3 wherein x is an integer from 0 to 3 are described.

Abstract: A compound according to formula I: X—(CF2)n-(O)p(CH2)m-Si—Y3 wherein X is CF2?CF—O—, CH2?CHCH2—O—, or CH2?CHCH2—; n is an integer from 2 to 8; m is an integer from 2 to 5; p is 0 or 1; and Y is Cl— or —OR, where R is a linear or branched alkyl having 1 to 4 carbon atoms. In some embodiments, Y is —O(CH2)xCH3, where x is an integer from 0 to 3.

Abstract: Provided is a curable composition comprising a partially fluorinated fluoropolymer, optionally an organo-onium accelerator an acid acceptor; and a crosslinking component of the formula.

Abstract: Described herein is method of making branched perfluorinated compounds, specifically (CF3)2CFCF(CF3)OCF(CF3)C(?O)F and (CF3)2CFCF(CF3)OCF?CF2. Also disclosed herein is a fluoropolymer derived from the branched perfluorovinyl ether monomer and methods of making the fluoropolymer.

Abstract: A compound according to formula I: X—(CF2)n-(O)p(CH2)m-Si—Y3 wherein X is CF2?CF—O—, CH2?CHCH2—O—, or CH2?CHCH2—; n is an integer from 2 to 8; m is an integer from 2 to 5; p is 0 or 1; and Y is Cl— or —OR, where R is a linear or branched alkyl having 1 to 4 carbon atoms. In some embodiments, Y is —O(CH2)xCH3, where x is an integer from 0 to 3.