Abstract: The present disclosure relates to compositions comprising at least one fluoroolefin and an effective amount of a stabilizer comprising at least one ascorbic acid, terephthalate, or nitromethane, or mixtures thereof. The stabilized compositions may be useful in cooling apparatus, such as refrigeration, air-conditioning, chillers and heat pumps, as well as in applications as foam blowing agents, solvents, aerosol propellants, fire extinguishants, and sterilants.

Abstract: A composition comprising a mixture of fluoropolyether acids or salts having a number average value of about 800 to about 2500 g/mol. The amount of fluoropolyether acids or salt in the mixture having a molecular weight of not more than 500 g/mol is not more than 50 ppm by weight of the total amount of fluoropolyether acids or salts in the mixture. The amount of fluoropolyether acids or salts in the mixture having a molecular weight of 2500 g/mol or greater is not more than 40% by weight of the total amount of fluoropolyether acids or salts in the mixture. Preferably the fluoropolyether acids or salts comprise an anionic group selected from the group consisting of carboxylate, sulfonate, sulfonamide anion and phosphonate. Also disclosed is an aqueous dispersion polymerization process for fluoropolymer manufacture employing polymerization agent comprising the specified mixture of fluoropolyether acids or salts.

Abstract: Various 13C and 14C carbon labeled compounds Rf—bCF(U)y(T)z??Formula 1A or Rf—bCF2bCF(U)y(T)z??Formula 1B wherein Rf is a linear or branched perfluoroalkyl radical Z(CmF2m)—, m is 1, 3 to 20, or a mixture thereof; Z is F when m is 1, and Z is F, Cl, or H when m is 3 to 20 or a mixture thereof; b is 13 or 14; y is 1, and z is 0 or 1; and when y and z are each 1, U is F, and T is selected from the group consisting of monovalent radicals —X wherein X is I or Br, —CH2—CH2—X, —CH?CH2, —CH2—CH2—OH, —CH2—COOH, —CH2OH, —bCH2OH, —COOH, —bCOOH, —O—CF(CF3)—C(O)F, —O—CF(CF3)—X, —SO2Y wherein Y is H, F or Cl, and —SO3H; and when y is 1, and z is 0, U is selected from the group consisting of divalent radicals ?CH—COOH, ?CH—CH2—OH, and ?O, are disclosed, and a process for their preparation which selectively introduces 13C and 14C carbon labels into a fluoroalkyl chain.

Abstract: A method of lubricating a sootblower comprising use of an oil or grease that is thermally stable at temperatures of at least 160° C. Sootblower components which can be lubricated include lance support bearings, gears, chains, seals, and shaft bearings. The oil or grease can be an ester, silicone, or halogenated oil or grease including perfluoropolyether or perfluoroalkyl ether, a fluorosilicone, a polytrifluorochloroethylene, derivatized perfluoropolyethers, such as fluoroether triazines, and mixtures of two or more thereof.

Abstract: Liquid hydrofluorocarbons provide low corrosivity lubrication of metallic surfaces especially at elevated temperatures.

Abstract: Amorphous hydrofluoroolefin telomers are prepared by a free-radical polymerization process conducted at high temperature and pressure in the presence of non-monomeric chain transfer agent.

Abstract: Various 13C and 14C carbon labeled compounds Rf—bCF(U)y(T)zFormula 1A or Rf—bCF2bCF(U)y(T)zFormula 1B wherein Rf is a linear or branched perfluoroalkyl radical Z(CmF2m)—, m is 1, 3 to 20, or a mixture thereof; Z is F when m is 1, and Z is F, Cl, or H when m is 3 to 20 or a mixture thereof; b is 13 or 14; y is 1, and z is 0 or 1; and when y and z are each 1, U is F, and T is selected from the group consisting of monovalent radicals —X wherein X is I or Br, —CH2—CH2—X, —CH?CH2, —CH2—CH2—OH, —CH2—COOH, —CH2OH, —bCH2OH, —COOH, —bCOOH, —O—CF(CF3)—C(O)F, —O—CF(CF3)—X, —SO2Y wherein Y is H, F or Cl, and —SO3H; and when y is 1, and z is 0, U is selected from the group consisting of divalent radicals ?CH—COOH, ?CH—CH2—OH, and ?O, are disclosed, and a process for their preparation which selectively introduces 13C and 14C carbon labels into a fluoroalkyl chain.

Abstract: A process to prepare substituted aryl pnictogen derivatives comprising contacting a fluoropolyether or fluoroalkyl primary bromide or iodide, with a pnictogen derivative such as triaryl phosphine, triaryl arsine, or triaryl stibine or triaryl phosphine oxide, triaryl arsine oxide or triaryl stibine oxide, to produce the corresponding fluoropolyether- or fluoroalkyl-substituted aryl phosphine oxide, aryl arsine oxide or aryl stibine oxide; and optionally, contacting the oxide product with a reducing agent to form the corresponding substituted aryl phosphine, arsine or stibine.

Abstract: A nitrogenated perfluoropolyether or a composition comprising thereof is provided. The nitrogenated perfluoropolyether comprises one or more perfluoropolyether groups and an amino group wherein the perfluoropolyether group and the amino group are linked by an amide group. The nitrogenated perfluoropolyether can be produced by contacting a perfluoro acid halide with an amine under a condition sufficient to produce the nitrogenated perfluoropolyether. Also provided is a substrate having coated, impregnated, or incorporated thereon or therein a composition comprising the nitrogenated perfluoropolyether.

Abstract: A composition that is or comprises a phosphorus-, perfluoropolyether-, and perfluoroalkyl-containing compound is provided. The compound comprises either (i) mono- or polyalkylene oxide linking groups between the phosphorus and the fluorocarbon group, or (ii) no linking group between the phosphorus and fluorocarbon group, or (iii) individual mixtures of (i) and (ii); and the fluorocarbon group can be the perfluoropolyether or perfluoroalkyl group. The compound can also be a partially esterified phosphate, a partially esterified phosphonate, a salt of a partially esterified phosphate, a salt of a partially esterified phosphonate, or mixtures of two or more thereof.

Abstract: A recording medium comprising a phosphorus-containing fluorocarbon compound is provided. The phosphorus-containing fluorocarbon compound can be used as lubricant or as an additive to a lubricant. The phosphorus-containing fluorocarbon compound can be an esterified aryl phosphorus compound, a salt thereof, or combinations thereof.

Abstract: A composition that is or comprises a phosphorus-, perfluoropolyether-, and perfluoroalkyl-containing compound is provided. The compound comprises either (i) mono- or polyalkylene oxide linking groups between the phosphorus and the fluorocarbon group, or (ii) no linking group between the phosphorus and fluorocarbon group, or (iii) individual mixtures of (i) and (ii); and the fluorocarbon group can be the perfluoropolyether or perfluoroalkyl group. The compound can also be a partially esterified phosphate, a partially esterified phosphonate, a salt of a partially esterified phosphate, a salt of a partially esterified phosphonate, or mixtures of two or more thereof.