Abstract: The present invention describes a fluid which is suitable for the decontamination of heat engines which can carry out both, at the same time, the catalytic reduction of oxides of nitrogen (NOx) contained in exhaust gases and assist in the regeneration of the particulate filter (PF). The invention also describes several embodiments of said fluid.

Abstract: The invention relates to a fluid suited for depollution of exhaust gas, notably in internal-combustion engines, allowing both to perform catalytic reduction of the nitrogen oxides (DeNOx) contained in the exhaust gas and to provide particulate filter (PAF) regeneration aid. The fluid is a homogeneous aqueous solution of a reductant or a reductant precursor for the DeNOx process, and it comprises a metallic additive for catalyzing the oxidation of exhaust gas particles. This metallic additive is a basic metal carbonate soluble in said aqueous solution. The invention also describes the preparation method and the use thereof for the depollution of exhaust gas of internal-combustion engines.

Abstract: The invention relates to a fluid suited for depollution of exhaust gas, notably in internal-combustion engines, allowing both to perform catalytic reduction of the nitrogen oxides (DeNOx) contained in the exhaust gas and to provide particulate filter (PAF) regeneration aid. The fluid is a homogeneous aqueous solution of a reductant or a reductant precursor for the DeNOx process, and it comprises a metallic additive for catalyzing the oxidation of exhaust gas particles. This metallic additive is a basic metal carbonate soluble in said aqueous solution. The invention also describes the preparation method and the use thereof for the depollution of exhaust gas of internal-combustion engines.

Abstract: The present invention describes a fluid which is suitable for the decontamination of heat engines which can carry out both, at the same time, the catalytic reduction of oxides of nitrogen (NOx) contained in exhaust gases and assist in the regeneration of the particulate filter (PF). The invention also describes several embodiments of said fluid.

Abstract: The gaseous effluent is contacted with an aqueous solution comprising at least one amine and at least one amine degradation inhibiting compound. A stainless steel withstanding corrosion upon contact with the amine degradation inhibiting compound is first selected. Equipments whose surfaces in contact with the aqueous solution are made from this stainless steel are used.

Abstract: The invention relates, on the one hand, to a composite material composition capable of neutralizing acid compounds and of being used under high temperature conditions, said composition being a mixture of a polymer material with a predetermined amount of reactive fillers, the mass fraction of the chemically active products ranges between 4 and 40% and the polymer material is selected from the vinylidene fluoride copolymers family, comprising a vinylidene fluoride monomer, and at least one monomer being selected from among the following monomers: hexafluoropropylene, perfluoro(methylvinyl)ether, perfluoro(ethylvinyl)ether, perfluoro (propylvinyl)ether, tetrafluoroethylene, perfluorobutylethylene, fluoropropylene, chlorotrifluoroethylene, chlorodifluoroethylene, chlorofluoroethylene, trifluoroethylene, and the monomer with the following formulation: CH2?CH—CF2—(CF2)4—CF3 and, on the other hand, to a pipe comprising at least one sheath made from the composite material composition.

Abstract: This invention relates to the field of processes for membrane separation and applies in particular to the purification of C2 or C3 olefins. This process makes it possible more particularly to separate propylene from a mixture that contains other C3 hydrocarbons such as propane. The membranes that are used in the process according to this invention are vitreous polymer-based membranes whose pattern contains a bis-phenyl-9,9-fluorene group.

Abstract: The invention relates to an electrochemical cell capable of generating and/or accumulating electrical energy, comprising an oxidizable electrode (2) made of aluminium or aluminium alloy, a conductive air electrode (1) allowing the diffusion of air and reduction of the oxygen in air, and an electrolyte (3). Electrolyte (3) is non-aqueous and it comprises a mixture of aluminium trichloride (AlCl3) with a chlorinated cyclic or heterocyclic, aliphatic nitrogen derivative. The invention also relates to an electrochemical system for storing electrical energy comprising at least one such cell.

Abstract: A system for stowing a swimming pool cleaner robot in a location has a deployment piston connected to the robot and suitable for moving in a pipe of the swimming pool. The system also has a device to generate extra pressure in the pipe during a cleaning stage during which the swimming pool is cleaned by the robot in such a manner as to drive the deployment piston to a first position in the pipe; and a device to generate suction in the pipe during a filtering stage during which the water of the swimming pool is filtered, while the robot is inactive in such a manner as to suck the deployment piston to a second position in the pipe, making it possible for the robot to be stowed in the location.

Abstract: The gaseous effluent is contacted with an aqueous solution comprising at least one amine and at least one amine degradation inhibiting compound. A stainless steel withstanding corrosion upon contact with the amine degradation inhibiting compound is first selected. Equipments whose surfaces in contact with the aqueous solution are made from this stainless steel are used.

Abstract: The invention relates to a process for membrane separation that makes it possible to separate linear hydrocarbons from branched hydrocarbons. The membrane that is used comprises a dense selective layer that consists of a polymer whose chemical structure contains at least one bis-phenyl-9,9-fluorene group.

Abstract: The invention relates to a chemically gelled curable resin based on epoxy-amine resins and on ionic liquids. The invention advantageously applies to energy accumulation systems, notably electrochemical systems. The curable composition according to the invention can notably constitute an electrolyte usable in a hybrid or electric vehicle battery.

Abstract: This invention relates to the field of processes for membrane separation and applies in particular to the purification of C2 or C3 olefins. This process makes it possible more particularly to separate propylene from a mixture that contains other C3 hydrocarbons such as propane. The membranes that are used in the process according to this invention are vitreous polymer-based membranes whose pattern contains a bis-phenyl-9,9-fluorene group.

Abstract: The pipe is intended for carrying a petroleum effluent comprising at least one of the acid compounds CO2 and H2S. The pipe comprises at least one metal element (3, 5) and a tubular sheath made of a polymer material (2, 4), the metal element being provided outside the sheath. The sheath consists of a mixture of a polymer material with a predetermined amount of products chemically active with said acid compounds so as to irreversibly neutralize the corrosive effects of said compounds and to limit the corrosive effects on said metal elements. The pipe is characterized in that the chemically active products are incorporated into the sheath in form of particles of specific surface area above 5 m2/g.

Abstract: The invention relates to a process for membrane separation that makes it possible to separate linear hydrocarbons from branched hydrocarbons. The membrane that is used comprises a dense selective layer that consists of a polymer whose chemical structure contains at least one bis-phenyl-9,9-fluorene group.

Abstract: This system for stowing a swimming pool cleaner robot in a location comprises: a deployment piston connected to said robot and suitable for moving in a pipe of said swimming pool; means for acting, during a cleaning stage during which the swimming pool is cleaned by said robot, to generate extra pressure in said pipe, in such a manner as to drive the deployment piston to a first position in said pipe; and means for acting, during a filtering stage during which the water of said swimming pool is filtered, while said robot is inactive, to generate suction in said pipe, in such a manner as to suck said deployment piston to a second position in said pipe, making it possible for said robot to be stowed in said location.

Abstract: The invention concerns a structure comprising at least one metallic surface which undergoes cathodic protection and a protective coating for said surface, said coating comprising a polymer including micro-capsules containing compounds sensitive to the electric field generated by the cathodic protection and capable of reacting in an alkaline medium to form a protective layer on the surface of the structure when it is in direct contact with a corrosive medium. The invention also concerns the coating associated with said structure.

Abstract: The present invention relates to a multilayer structure with controlled permeability to hydrocarbons, comprising at least one inner polymer layer (6) and at least one outer layer (5) comprising a mixture of polymer material and of fillers. The fillers are mineral and selected to adsorb and to trap an amount of hydrocarbons released through said inner layer so as to reduce the permeability of the structure. Application to the manufacture of fuel tanks or lines.

Abstract: The invention concerns a structure comprising at least one metallic surface which undergoes cathodic protection and a protective coating for said surface, said coating comprising a polymer including micro-capsules containing compounds sensitive to the electric field generated by the cathodic protection and capable of reacting in an alkaline medium to form a protective layer on the surface of the structure when it is in direct contact with a corrosive medium. The invention also concerns the coating associated with said structure.

Abstract: Graft stereoblock polymers are described which contain at least one polyolefin or polydiene type sequence comprising at least one succinimide ring substituted on the nitrogen atom by a reactive group with formula —R(—X)n, where —X represents a reactive group, n is a number greater than or equal to 1 and —R is a residue containing at least one carbon atom, and containing at least one sequence of a variety of natures, different from a polyolefin or polydiene. Their preparations and uses are also described. Mixtures of polymers comprising at least two polymers which are different from each other, at least one of which is a graft stereoblock polymer as defined above, and their uses, are also described.