Abstract: The present invention relates to a process for preparing CNTs by bringing a carbon source into contact with a multivalent metal and/or metal-oxide-based catalyst deposited on an inorganic substrate having a BET specific surface area of greater than 50 m2/g. The CNTs obtained may be used as agents for improving the mechanical and electrical conductivity properties in polymeric compositions.

Abstract: The invention relates to a process for the formation of a coating of metal oxides comprising at least one precious metal from Group VIII of the Periodic Table of the elements, optionally in combination with titanium and/or zirconium, on an electrically conductive substrate made of steel or of iron, which consists in applying a sole solution of acetylacetonate(s) of the said metal(s) dissolved in a (plurality of) solvent(s) which specifically dissolve(s) each metal acetylacetonate; and in then drying and calcining the coated substrate. The invention also relates to an activated cathode obtained from the electrically conductive substrate coated with metal oxides and to its use in the electrolysis of aqueous solutions of alkali metal chlorides.

Abstract: A modified clay may be made by contacting a clay with an unsaturated cationic compound and an alkoxyamine, or an adduct thereof. The resulting pre-activated clay, which contains a cationic alkoxyamine bound to the clay, may be further treated with a monomer to provide a polymer that is bound to the clay, thereby forming a nanocomposite material. The nanocomposite material may in turn be blended with another polymer prepared from the same or a different monomer.

Abstract: A subject-matter of the invention is alkoxyamines resulting from ?-phosphorated nitroxides corresponding to the formula: in which R represents an alkyl radical having a number of carbon atoms ranging from 1 to 3, R1 represents a hydrogen atom or a residue: in which R3 represents an alkyl radical having a number of carbon atoms ranging from 1 to 20, and R2 represents a hydrogen atom, an alkyl radical having a number of carbon atoms ranging from 1 to 8, a phenyl radical, an alkali metal, such as Li, Na or K, H4N+, Bu4N+ or Bu3HN+, exhibiting a kinetic dissociation constant kd, measured at 120° C. by EPR, of greater than 0.05 s?1. These compounds can be used as initiators for the (co)polymerizations of at least one monomer which can be polymerized by the radical route.

Abstract: The present invention relates to the field of solvents. It relates more particularly to a process for the dissolution of oil at low temperature. Another subject matter of the invention is a novel composition based on 1,1,1,3,3-pentafluorobutane (HFC-365mfc) and on 1,1,1,2,3,4,4,5,5,5-decafluoropentane (HFC-43-10mee).

Abstract: The invention relates to anhydrous bituminous products containing one or several specific additives which make it possible to substantially reduce a temperature for producing aggregate and bituminous product mixtures in such a way that it ranges from 20 to 40° C., wherein the temperature of the aggregate and the bituminous product mixture during spreading ranges from 10 to 40° C. and the temperature in the core of the aggregate and bituminous product mixtures during compacting can be raised to 50° C. without degrading the standardized properties of the bituminous product and the bituminous product and aggregate mixture and ensuring the process continuity from transport to compacting according to the state of the art. The inventive aggregate and bituminous product mixtures are particularly suitable for tightening, building and servicing road surfaces, pavements and airfield runways.

Abstract: A method for working or forming metals which consists in usings an aqueous lubricant containing as water-soluble extreme pressure additive, methanesulphonic acid or water-soluble methanesulphonic acid salt. The water-soluble methane sulphonic acid salt is an alkali or alkaline-earth, ammonium, alkanol amine or ethoxylated fatty amine salt. The inventive aqueous lubricants have good extreme pressure properties and good properties with respect to corrosion.

Abstract: The present invention provides a method of increasing the absorption rate of peroxides into polymer particles used to fabricate electrical cable insulation. The method includes contacting the polymer particles with a peroxide compound and an additive under physical mixing conditions at a temperature that is above the melting point of the peroxide compound but below the softening point of the polymer particles for a period of time sufficient to allow the peroxide compound to absorb into the polymer particles. Preferably, the additive is squalane or another branched, hydrocarbon oil that substantially increases the rate at which the peroxide compound is absorbed into the polymer particles and improves the peroxide cure.

Abstract: The present invention relates to acrylic block copolymers synthesized by a controlled radical process, and their use as thickeners in oil-based compositions. The acrylic copolymers are especially useful as viscosity index improvers in lubricating oil.

Abstract: The present invention relates to perfluorobutyl ether mixtures or compositions that are azeotropic or of azeotropic type. More particularly, one subject of the invention is compositions comprising at least one nonafluorobutyl alkyl ether and a biodegradable compound, capable of being used as a solvent or refrigerant.

Abstract: Tin oxide having high mobility and a low electron concentration, and methods for producing layers of the tin oxide layers on a substrate by atmospheric pressure chemical vapor deposition (APCVD) are disclosed. The tin oxide may undoped polycrystalline n-type tin oxide or it may be doped polycrystalline p-type tin oxide. When the layer of tin oxide is formed on a crystalline substrate, substantially crystalline tin oxide is formed. Dopant precursors for producing doped p-type tin oxide are also disclosed.

Abstract: The present invention relates to a process for manufacturing acrolein by gas-phase dehydration of glycerol in the presence of strongly acidic solid catalysts with a Hammett acidity H0 of between ?9 and ?18 and preferably between ?10 and ?16.

Abstract: The present invention relates to a process for radical emulsion, miniemulsion or microemulsion polymerization employing at least one water-soluble alkoxyamine. This process makes it possible to prepare multiblock (co)polymers, in particular diblock and triblock (co)polymers.

Abstract: The present invention relates to a method for purifying (meth)acrylic acid obtained by catalytic or redox oxidation of a gaseous substrate constituting propane, propylene, acrolein, isobutane, isobutene, tert-butyl alcohol and/or (meth)acrolein or mixtures thereof by sending the gaseous reaction mixture to the bottom of a countercurrent absorption column (C1) which is supplied at the top with at least one type of hydrophobic heavy solvent, sending the flow (4) from the bottom of column (C1) to a separation column (C2). Column (C1) is operated at a flow rate of heavy solvent of from 3 to 5.6 times the flow rate of the (meth)acrylic acid in the gaseous reaction mixture and the rectifying column used as a separation column (C2) is operated with the feed at the top and without reflux.

Abstract: The invention relates to a method for synthesis of carbon nanotubes of the highest carbon purity by the process of vapour phase chemical deposition. The nanotubes produced can be used to advantage in all know applications of carbon nanotubes.

Abstract: The present invention concerns the field of fluorinated hydrocarbons and relates to novel compositions containing fluorinated hydrocarbons, secondary butanol and optionally DMSO. These novel compositions are particularly advantageous for defluxing electronic boards in particular for defluxing electronic boards containing “no clean” solder fluxes.

Abstract: The present invention relates to a process for the production of monoalkyltin trihalides of the formula RSnHal3, in which R=alkyl or cycloalkyl and Hal=Cl. Br or I. Said process comprises contacting the corresponding alkene or cycloalkene, stannous halide SnHal2, hydrogen halide HHal and optionally Sn metal, in the presence of at least one transition metal-based catalyst, thereafter isolating the monoalkyltin trihalides from the medium. The present invention also relates to a process for the production of dialkyltin dihalides of the formula R2SnHal2 from monoalkyltin trihalides of the formula RsnHal3?. in which R=alkyl or cycloakyl and Hal=Cl, Br or I. Said process comprises contacting monoalkyltin trihalides RsnHal3 and Sn metal, optionally thereafter isolating the dialkyltin dihalides R2SnHal2 from the medium.

Abstract: Compositions containing unsaturated fatty esters may be stabilized against atmospheric oxidation by the addition of an antioxidant package containing a phenolic oxidant and a nonphenolic oxygen scavenger, which may be a hydroxylamine, an amine N-oxide, an oxime, or a nitrone. If an amine N-oxide is used, it may be used with or without a phenolic antioxidant. Compositions treated in this manner show good resistance to atmospheric oxidation and resultant viscosity increase.

Abstract: The invention relates to a novel method for preparing electrodes based on activated carbon and carbon nanotubes on a collector. The invention also relates to the electrode obtained thereby and the supercapacitor comprising same.

Abstract: A composition for coating glass by chemical-vapor deposition comprises a mixture of a tin oxide precursor monobutyltin trichloride, a silicon dioxide precursor tetraethylorthosilicate, and an accelerant such as triethyl phosphite; the composition is gaseous below 200° C., and permits coating glass having a temperature from 450° to 650° C. at deposition rates higher than 350 ?/sec. The layer of material deposited can be combined with other layers to produce an article with specific properties such as controlled emissivity, refractive index, abrasion resistance, or appearance.