Login| Sign Up| Help| Contact|

Patent Searching and Data


Matches 451 - 500 out of 6,118

Document Document Title
WO/2002/059230A2
The invention relates to azeotropic and azeotrope-like mixtures of 1,2,2-trichloro-1,3,3,3-tetrafluoropropane (HCFC-224aa) and hydrogen fluoride, which are useful as intermediates in the production of HCFC-224AA.  
WO/2002/059067A1
Disclosed is an improved HFC manufacturing processes of the type which produces an intermediate product stream that includes a mixture of HF and at least one compound, usually an HCFC, which is relatively resistant to further fluorinatio...  
WO/2002/055457A2
A process for purifying octafluoropropane according to the present invention comprises the step of contacting a crude octafluoropropane containing impurities with an impurity decomposing agent under elevated temperature and then with an ...  
WO/2002/055459A2
A method of producing hydrofluorocarbons and/or hydrochlorofluorocarbons by using halogenated alkanes as a principal reactant. Generally, the method comprises the step of: (a) reacting a starting halogenated alkane corresponding to the f...  
WO/2002/030563A2
The invention relates to a method and a system for dissolving poorly soluble salt, in particular sodium chloride and other poorly soluble salts in 1,2-dichlorethane, which can be predominantly used in direct chlorination systems for prod...  
WO/2002/028806A1
A process is provided for the production of 1,1,1,3,3-pentachloropropane. The process comprises: (a) producing a product mixture in a reactor by reacting carbon tetrachloride and vinyl chloride in the presence of a catalyst mixture compr...  
WO/2002/022530A2
A method for the production of a cleanining agent and a solvent carrier with reduced toxicity resulting from lower isoropyl bromide (2-bromopropane) content will be described. The cleaning agents are effective for removal of various soil...  
WO/2002/020443A1
The invention relates to chemical engineering and can be used for producing 1,2-dichloroethane by means of direct chlorination of ethylene in liquid dichloroethane. The aim of said invention is to increase the ratio of ethylene and the s...  
WO/2002/020434A1
Fluoroalkanes such as fluoromethane labeled with ?17¿F are produced by contracting ?17¿F labeled F¿2? with alkanes, preferably methane, substituted or unsubstituted alkenes, or substituted or unsubsituted alkynes in the presence of a ...  
WO/2002/018305A2
Octafluoropropane is produced by a process comprising a step (1) of reacting hexafluoropropene with hydrogen fluoride in a gas phase at a temperature of from 150 to 450°C in the presence of a fluorination catalyst to obtain 2H-heptafluo...  
WO/2002/018304A2
A process for the production of a hydrofluoroalkane, which process comprises contacting a hydrochlorofluoroethane of formula CC1XYCFHZ, wherein X and Y are each independently chlorine or fluorine and Z is chlorine, fluorine or hydrogen, ...  
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...  
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.  
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...  
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...  
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...  
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...  
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...  
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 ...  
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...  
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...  
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.  
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...  
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...  
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...  
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.  
WO/2001/058841A1
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 ...  
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 ...  
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...  
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...  
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...  
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...  
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...  
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...  
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 ...  
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 ...  
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...  
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...  
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...  
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...  
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...  
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.  
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...  
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 ...  
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...  
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 ...  
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...  
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...  
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...  
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...  

Matches 451 - 500 out of 6,118