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WO/2002/012153A1 |
Process for obtaining a hydrofluoroalkane which is purified of organic impurities, according to which the hydrofluoroalkane containing organic impurities is subjected to at least one purification treatment chosen from: (a) a treatment wi...
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WO/2002/006194A2 |
A method of producing hydrofluorocarbons and methods of producing other commercially attractive compounds formed as by-products of hydrofluorocarbon production by using aldehydes as a principal reactant.
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WO/2002/004529A2 |
A method of removing at least one inert reaction diluent and/or wash diluent from a waste stream from a catalyst precursor production unit, where the waste stream includes at least one reaction diluent or wash solvent, at least one titan...
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WO/2002/002492A2 |
Disclosed is a process which achieves improved selectively of HFC-125 and/or improved HFC/HCFC ratio (and particularly HFC-125/CFC-115 ratio) by a fluorination process which comprises reacting PCE and HF in a first reaction train to prod...
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WO/2001/098240A2 |
The present invention intends to provide a process for producing CF¿3?CF¿3? with good profitability using CF¿3?HF¿2? containing a compound having chlorine atom within the molecule, and use thereof. In the process of the present inven...
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WO/2001/096237A2 |
Disclosed is an intercalant compound having formula (I): wherein R?1¿ is H or a C¿1?-C¿4? alkyl, n is 2-17, and R?2¿ is a radical selected from the group consisting of X, COOR?3¿, CN, NR¿2?, and NR¿2?.HX, wherein R?3¿ is R, NR¿2...
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WO/2001/083412A2 |
Tetrafluoromethane containing ethylene compounds, hydrocarbon compounds, carbon monoxide and/or carbon dioxide is contacted with zeolite having an average pore size of 3.4 to 11 Å and an Si/Al ratio of 1.5 or less and/or a carbonaceous ...
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WO/2001/083411A1 |
A process for removing a (hydro)haloalkene impurity from a product stream containing that impurity and a desired compound is described. The process comprises contacting the product stream with a solid adsorbent comprising pores having op...
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WO/2001/081353A1 |
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 halid...
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WO/2001/077048A1 |
The invention concerns a method for preparing a hydro(chloro)fluoroalkane which consists in reacting a halogenated hydro(chloro)fluoroalkane precursor with a hydrogen fluoride in the presence of a catalyst comprising chromium (Cr) and at...
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WO/2001/077047A1 |
The invention concerns a method for preparing a hydrofluoroalkane which consists in reacting a precursor of hydrofluoroalkane with hydrogen fluoride in the presence of a catalyst comprising chromium (Cr) and another metal.
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WO/2001/074483A1 |
The invention relates to a process for preparing a co-precipitated Cr2O3/Al2O3 catalyst promoted by zinc, said process comprising co-precipitation of chromium and aluminum metal hydroxides from corresponding trivalent metal salt solution...
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WO/2001/068575A1 |
A cation or acid generator which, upon irradiation with energy rays, can generate cations or an acid with high sensitivity and which is suitable for use in chemical amplification type resist materials. It comprises an energy-ray-sensitiv...
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WO/2001/068574A1 |
The invention relates to chemical technology and can be used in the production of dichloroethane with the aid of direct ethylene chlorinatioin in liquid dichloroethane. The inventive method is directed at increasing the productivity of s...
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WO/2001/066498A2 |
The invention concerns a method for obtaining a hydrofluoroalkane which consists in subjecting the hydrofluoroalkane comprising organic impurities to at least two distillations.
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WO/2001/058840A2 |
A method of treating a fluorocarbon feedstock includes generating, in a high temperature zone, an electrical arc between at least one cathode and at least one anode, generating in the high temperature zone and by means of the electrical ...
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WO/2001/046099A1 |
A method is disclosed for the preparation of a hydrofluorocarbon comprising the steps of: (a) chlorinating a ketone to produce a chlorinated ketone; (b) fluorinating said chlorinated ketone to produce a fluorinated ketone; (c) reducing s...
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WO/2001/042176A1 |
A process for producing vinyl chloride monomer where significant quantities of both ethane and ethylene in input streams to the affiliated reactor where hydrogen chloride in the reactor effluent is essentially fully recovered from the re...
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WO/2001/038274A1 |
A process for producing vinyl chloride monomer from ethylene and ethane having input of significant quantities of both ethane and ethylene in input streams to the affiliated reactor where hydrogen chloride in the reactor effluent is only...
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WO/2001/038273A1 |
This invention is a process for producing vinyl chloride from an ethylene-containing feed, oxygen, and a chlorine source in the presence of a catalyst. The process permits direct production of vinyl chloride in a single reactor system, a...
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WO/2001/038275A1 |
A process for the dehydrohalogenation of halogenated alkanes involving contacting a halogenated alkane having three or more carbon atoms with a rare earth halide or rare earth oxyhalide catalyst under process conditions sufficient to pre...
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WO/2001/038271A1 |
An oxidative halogenation process involving contacting a hydrocarbon, for example, ethylene, or a halogenated hydrocarbon with a source of halogen, such as hydrogen chloride, and a source of oxygen in the presence of a catalyst so as to ...
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WO/2001/038272A1 |
A process for producing vinyl chloride monomer from ethane having input of significant quantities of both ethane and ethylene in input streams to the affiliated reactor where hydrogen chloride in the reactor effluent is reacted away in a...
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WO/2001/034542A2 |
The invention relates to a method and a device for the optimal use of reaction heat resulting from the production of 1,2-dichloroethane from ethene and chlorine. The aim of the invention is achieved by extracting reaction heat liberated ...
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WO/2001/032592A1 |
A process for preparing halogenated ethanes, particularly pentafluoroethane, from a mixture produced by the reaction of perchloroethylene, hydrogen fluoride and a recycle stream. The preferred process utilizes phase separation techniques...
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WO/2001/028959A1 |
The present invention provides a method of selectively fluorinating a carbon-hydrogen bond at an unactivated saturated sp?3¿ hybridised carbon atom of an organic compound, the method including reacting the organic compound with elementa...
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WO/2001/027057A1 |
A process for removing a chlorinated methane impurity from a stream comprising of halogenated compound other than the chlorinated methane impurity, the process comprising contacting the stream with a polymer adsorbent to produce a purifi...
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WO/2001/025175A1 |
The invention concerns a method for obtaining halogenated hydrocarbons comprising at least 3 carbon atoms by discontinuous reaction of a haloalkane with an olefin in the presence of a catalyst and a co-catalyst and by gradually adding at...
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WO/2001/025177A1 |
The invention concerns a method for recovering a co-catalyst of an aqueous phase by treatment with a base and a step which consists in separating the co-catalyst whereby the co-catalyst is isolated from the aqueous phase treated with the...
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WO/2001/025176A1 |
The invention concerns a method for obtaining halogenated hydrocarbons comprising at least 3 carbon atoms by reacting a haloalkane with an olefin in the presence of a catalyst in an essentially water-free reaction medium.
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WO/2001/021564A1 |
The invention relates to a method for the production of 1,2-dichlorethane by direct chlorination using chlorine and ethene in which, despite low reaction temperatures during direct chlorination, reaction heat produced is nevertheless use...
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WO/2001/017639A1 |
In a biomass extraction circuit there is a need for an improved evaporator. An evaporator (12) includes an inlet for a liquid solvent/biomass mixture, the inlet including a spray nozzle (27). The evaporator (12) includes a heated vessel ...
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WO/2001/017933A1 |
The invention relates to the production of purified, saturated, partially fluorinated and perfluorinated hydrocarbon compounds from raw materials, which are tainted with impurities and absorb light at a wavelength of $g(l) > 200 nm. Said...
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WO/2001/014295A1 |
A method of treatment by which the content of unsaturated-compound impurities in 1,1,1,3,3-pentafluoropropane (R245fa) is reduced while minimizing the loss of R245fa. R245fa containing unsaturated compounds as impurities is brought into ...
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WO/2001/007384A1 |
Processes for preparing a variety of fluorocarbons are disclosed. Processes are described wherein the yields of desired products are increased by endlessly converting the undesired products to reactive intermediates. Trifluoroethylene is...
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WO/2000/076945A2 |
Alkanes containing chlorine can be produced by attaching chlorine to C-C-double bonds or C-C-triple bonds or by exchanging hydrogen for chlorine, by bringing the starting compound in the gas or liquid phase into contact with elementary c...
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WO/2000/076658A1 |
A catalyst for use in the hydrochlorination of methanol which comprises an $g(h)-alumina doped with an alkali metal salt, e.g. caesium chloride, in order to reduce selectivity to demethyl ether and to delay the onset of coking on the cat...
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WO/2000/071492A1 |
A process for fluorinating a hydrocarbon substrate is by mixing it with an inert diluent and mixing the diluted substrate with a gaseous fluorinating reagent to form a foam reaction mixture. The fluorinating reagent reacts with the subst...
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WO/2000/069797A1 |
Preparation of HFC 227ea by reacting HFP with hydrogen fluoride comprising the steps of charging the reaction mixture therefrom to a liquid-phase separator, allowing a HFC 227ea-rich phase and a hydrogen fluoride-rich phase to separate u...
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WO/2000/068170A1 |
A method of fluorinating a substance comprises providing a reaction mixture comprising a liquid or supercritical carbon dioxide reaction medium, a first reactant, and a second reactant, wherein the first reactant is a fluorinating reagen...
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WO/2000/068172A1 |
A process for preparing a haloalkane comprising: (a) contacting a haloalkane starting material with a haloalkene starting material in the presence of an effective amount of a catalyst complex under conditions effective to facilitate an a...
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WO/2000/059850A1 |
A method for the production of 1,1,1,3,3-pentafluoropropene, and particularly to a method characterized by high conversion, yield and selectivity by contacting 2,2-dichloro-1,1,1,3,3,3-hexafluoropropane with hydrogen in the presence of a...
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WO/2000/058241A1 |
The invention provides a method of selectively fluorinating an organic compound at an unactivated saturated sp?3¿ hybridised carbon atom, the method comprising reacting the compound with a fluorinating agent containing an N-F bond. The ...
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WO/2000/056833A1 |
Disclosed are binary azeotrope-like compositions consisting essentially of 1,1,1,3,3-pentafluorobutane (HFC-365mfc) and 1,1,1,2,3,4,4,5,5,5-decafluoropentane (HFC-43-10mee) or nonafluoromethoxybutane. The present invention further includ...
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WO/2000/056687A1 |
The invention concerns a method for separating hydrogen fluoride from its mixtures with 1,1,1,3,3-pentafluorobutane by extraction using an organic solvent 1,1,1,3,3-chloro(fluoro)butane.
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WO/2000/056834A1 |
The present invention relates to azeotrope-like compression refrigerant compositions consisting essentially of difluoromethane (HFC-32), pentafluoroethane (HFC-125), 1,1,1,2-tetrafluoroethane (HFC-134a) and 0.5-5 weight percent of a hydr...
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WO/2000/055107A1 |
The invention relates to a method and to a system for producing 1,2 dichloroethane or ethylene (di)chloride (EDC) using a circulating reaction medium and a catalyst. The aim of the invention is to allow a catalytic chlorination of the et...
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WO/2000/053549A1 |
The invention relates to a process for preparing a fluorinated product, such as 1,1,1,2,3,3,3-heptafluoropropane, comprising reacting a molar excess of an aliphatic starting material such as 1,1,1,3,3,3-hexafluoropropane in the liquid ph...
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WO/2000/037401A1 |
The invention concerns a method for separating a mixture comprising at least a hydrofluoroalkane and hydrogen fluoride, which consists in reacting a hydrofluoroalkane/hydrogen fluoride mixture with at least a chlorinated or chlorofluorin...
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WO/2000/035839A1 |
A process for catalytic addition of haloalkanes to alkenes involving the step of reacting the haloalkane with the alkene in the presence of a catalyst. The catalyst is an organophosphite compound represented by the following formula: P(O...
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