Abstract:
The invention relates to a method for producing E-1-chloro-3,3,3-trifluoropropene, comprising at least one step during which 1,1,3,3-tetrachloropropene reacts with anhydrous hydrofluoric acid in a liquid phase, in the absence of a catalyst. The invention also relates to the steps of separation and purification of the flows emanating from the reaction.
Abstract:
The invention relates to an azeotropic or quasi-azeotropic composition comprising hydrogen fluoride, 3,3,3-trifluoropropene and one or more (hydro)halogen-carbon compounds comprising between 1 and 3 carbon atoms. The invention also relates to a preferred azeotropic or quasi-azeotropic composition comprising hydrogen fluoride, 3,3,3-trifluoropropene, and one or more compounds selected from among 1,1,1,2,2-pentafluoropropane, 2,3,3,3- tetrafluoropropene, 1,3,3,3-tetrafluoropropene, 3,3,3-trifluoro-2-chloropropene, E-3,3,3-trifluoro-1-chloropropene, trifluoropropyne, 1,1,1,3,3-pentafluoropropane, 1,1,1,3,3-pentafluoropropane, 1,1,1,3,3-pentafluoropropene, 1,1,1,2,3- pentafluoropropene and 2-chloro,1,1,1,2-tetrafluoropropane.
Abstract:
The invention relates to a device for preventing the ignition of a coolant fluid on-board a vehicle, comprising a means for detecting leakage of a coolant fluid and/or a fire detection means in contact with, or built into, a motor vehicle air-conditioning system comprising at least an evaporator, a compressor, a condenser, a regulator and optionally a tank and/or a dehydrator. The invention also relates to a method for preventing risk of ignition of coolant fluid.
Abstract:
The present invention provides a process of catalytic fluorination in gas phase of product 1,1,1,2,3-pentachloropropane or/and 1,1,2,2,3-pentachloropropane into product 2-chloro-3,3,3-trifluoropropene in presence of a catalyst and oxygen.
Abstract:
The invention concerns a method for purifying cyclic lactams containing 6 to 12 carbon atoms and containing chlorolactams as impurities, by hydrogenation reaction in the presence of a metal catalyst, a solvent and a compound having a radical -NH2, -NH or -N
Abstract:
The invention concerns ion liquids derived from the reaction of at least a halogenated or oxyhalogenated Lewis acid based on titanium, niobium, tantalum, tin or antimony with an organic salt of formula X+A- wherein A- is a halide or hexafluoroantimoniate anion and X+ a quaternary ammonium, quaternary phosphonium or ternary sulphonium cation. Said liquids are in particular useful for liquid phase HF fluorination of saturated or unsaturated compounds with C-CI bonds.
Abstract:
The present invention provides a process for preparing 2,3,3,3-tetrafluoropropene, comprising the following steps: (a) catalytic reaction of 1,1,1,2,3-pentachloropropane and/or 1,1,2,2,3-pentachloropropane with HF into product 2-chloro-3,3,3-trifluoropropene; (b) catalytic reaction of the thus-obtained 2-chloro-3,3,3-trifluoropropene into 2,3,3,3-tetrafluoropropene.