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WO/2003/066555A1 |
The specification provides a method for producing p-cumylphenol phenol by reacting phenol with &agr -methylstyrene in the presence of a highly efficient heterogeneous aluminum zirconium catalyst.
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WO/2003/059896A1 |
The invention relates to a method for producing compounds of formula (I), wherein R represents H or F. Said method is characterised in that a compound of formula (II), wherein X represents halogen, mesylate or tosylate, is reacted with a...
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WO/2003/051802A1 |
The present invention relates to the co-pyrolysis of fluoroform and chlorodifluoromethane to form a mixture of useful fluoroolefin and saturated HFCs, notably, tetrafluoroethylene and hexafluoropropylene and CF¿3?CHF¿2? and CF¿3?CHFCF...
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WO/2003/048088A1 |
The invention relates to a method for the production of 1,2-dichloroethane, comprising the following steps: (A) feeding a feed gas flow containing an ethane into a dehydrogenation zone; dehydrogenating the ethane into ethene while obtain...
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WO/2003/041148A1 |
A gas for plasma reaction which comprises a C5−6 chain perfluoroalkyne, preferably perfluoro−2−pentyne. This gas is suitable for use in the formation of a fine pattern by dry etching, formation of a thin film by CVD, or ashing. It ...
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WO/2003/037854A1 |
Disclosed is a method of preparing intermediates required for synthesis of natural carotenoid products using sulfone compounds, which is advantageous in terms of high preparation efficiency due to a relatively simple process. Specificall...
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WO/2003/027051A1 |
A process for producing a fluoroolefin of the formula: CF¿3?CY=CX¿n?H¿p? wherein Y is a hydrogen atom or a halogen atom (i.e., fluorine, chlorine, bromine or iodine); X is a hydrogen atom or a halogen atom (i.e., fluorine, chlorine, b...
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WO/2002/094752A1 |
In one aspect, a process for producing vinyl chloride from ethane/ethylene involving:(a) combining ethane, ethylene, or mixtures thereof with an oxygen source and a chlorine source in a reactor containing a suitable catalyst under condit...
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WO/2002/094751A2 |
An oxidative halogenation process involving contacting a reactant hydrocarbon selected from methane, a halogenated C¿1? hydrocarbon, or a mixture thereof with a source of halogen and, preferably, a source of oxygen in the presence of a ...
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WO/2002/094750A1 |
An oxidative halogenation and optional dehydrogenation process involving contacting a reactant hydrocarbon having three or more carbon atoms, such as propane or propene, or a halogenated derivative thereof, with a source of halogen, and ...
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WO/2002/094749A1 |
The preparation of vinyl halide monomer, and further to polyvinyl halide, starting from C¿1? compounds, involving conversion of methane or methanol to methyl halide; condensation of methyl halide to ethylene and co-product hydrogen hali...
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WO/2002/085824A1 |
The invention relates to a method for the intrinsically safe handling of 3-chlorpropyne in the presence of a diluent, which has a boiling point under normal pressure in the range of -50 °C (223 K) to 200 °C (473 K). According to the me...
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WO/2002/076913A2 |
The invention relates to a method for preparing a halogenated olefin by reacting an alkyne and/or an allenic compound with a hydrogen halide in a liquid medium comprising at least one hydrohalogenation catalyst containing at least one pa...
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WO/2002/059231A2 |
The invention relates to azeotropic and azeotrope-like mixtures of 1,2-dichloro-3,3,3-trifluoropropene (HCFC-1223xd) and hydrogen fluoride, which are useful as intermediates in the production of HCFC-1223xd.
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WO/2002/052072A1 |
An azeotropic mixture of perfluorobutylethylene and at least one of the group consisting of bromochloromethane, cyclopentane, cis-1,2 dichloroethylene, trans-1,2 dichloroethylene and dichloromethane useful for cleaning agents, blowing ag...
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WO/2002/049957A1 |
The invention concerns a hydrogen generating system, characterised in that it combines a water-corrodible metal, an inorganic material, said material having a specific surface capable of fixing the oxide and/or hydroxide form(s) of said ...
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WO/2002/026674A1 |
Less colored trans-1,3-dichloropropene and a process for producing it. A composition comprising cis-1,3-dichloropropene, trans-1,3-dichloropropene, and a C¿6? compound is subjected to a distillation step and to the step of causing chlor...
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WO/2002/014247A2 |
Halogenated compounds are dehydrohalogenated in a multi-stage bubble reactor wherein agitation of the reactor contents is provided by in situ generation and vaporization of reaction product having a boiling point lower than that of the r...
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WO/2002/014454A1 |
A method of reducing the formation of coke deposits on the heat-transfer surfaces of an ethylene dichloride to vinyl chloride pyrolysis furnace comprising exposing the heat transfer surfaces of said pyrolysis furnace to a phosphite selec...
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WO/2002/014581A1 |
A method of reducing the formation of coke deposits on the heat-transfer surfaces of an ethylene dichloride to vinyl chloride pyrolysis furnace comprising exposing the heat transfer surfaces of said pyrolysis furnace to a phosphine selec...
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WO/2002/006193A2 |
A gold-lined pyrolysis reactor is used to pyrolyze compounds to form fluoroolefins like tetrafluoroethylene and hexafluoropropylene in high yield, with minimum to no formation of perfluoroisobutylene, chlorotrifluoroethylene, coke, salts...
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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/2001/096265A1 |
A process is disclosed for increasing the fluorine content of an olefinic compound of the formula C¿n?H¿m?F¿2n-m?, where n is an integer from 2 to 6 and m is an integer from 1 to 2n. The process involves (a) contacting the olefinic co...
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WO/2001/096268A2 |
The invention concerns compounds of formula (I) F¿2?C=CFX(CY¿2?)¿n?Br wherein: X represents an oxygen atom or no atom at all; Y represents a hydrogen or fluorine atom; and n is a natural integer ranging between 0 and 10 inclusive; and...
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WO/2001/060772A1 |
A process for production of allyl chloride by reacting allyl alcohol with hydrogen chloride in the presence of a catalyst and distilling formed allyl chloride from the reaction system, wherein the allyl alcohol/hydrogen chloride molar co...
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WO/2001/058584A2 |
A method of treating a fluorocarbon feedstock includes heating, by means of radio frequency induction, a heating zone to a high temperature, allowing a fluorocarbon feedstock, comprising at least one fluorocarbon compound, to heat up in ...
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WO/2001/051436A1 |
A process for producing perfluoroalkadiene compounds of the general formula (I): CF¿2?=CF-(CF¿2?)¿n-4?-CF=CF¿2? (wherein n is an integer of 4 to 20) by deiodofluorination of compounds of the general formula (II): I-(CF¿2?)¿n?-I (wh...
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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/2001/025176A1 |
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/2001/016255A1 |
A heater includes a radiant section having a wall and a roof, the roof having a longitudinal opening. A radiant heat exchange tube is disposed in the radiant section, and the tube has an inlet and outlet through which a process fluid can...
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WO/2001/014294A1 |
A process is disclosed for producing (CF¿3?)¿2?C=CH¿2?, CF¿3?CH=CF¿2?, CF¿2?=C(CF¿3?)OCF¿2?CHF¿2? and C¿6?H¿5?C(CF¿3?)=CF¿2?. The process involves contacting the corresponding fluorocarbon starting material selected from (CF...
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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/2000/075092A1 |
A process is disclosed for producing perfluoroolefins of the formula CF(R?1¿¿f?)=CF¿2?, where R?1¿¿f? is F or CF¿3?. The process involves (a) perfluorinating cyclobutanes of formula (I), where R?2¿¿f? is F or CF¿3?, and where on...
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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/2000/031003A1 |
A process for preparing a fluoride from its corresponding alcohol comprises the steps of (a) forming a mixture comprising (i) at least one fluorinated, saturated aliphatic or alicyclic sulfonyl fluoride (for example, perfluorobutanesulfo...
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WO/2000/029361A1 |
A mixture comprising at least 1,1,1,3,3-pentafluoropropane and 1,1,1-trifluoro-3-chloro-2-propene is subjected to a distillation step to obtain a distillate comprising an azeotropic composition consisting substantially of 1,1,1,3,3-penta...
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WO/2000/027517A1 |
The invention relates to a device for providing a loose flange of a manhole opening or the like, especially for fluidized reactors for oxichlorinating ethylene, oxygen and HCl, with a wall flange fixed in the reactor wall. The aim of the...
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WO/2000/027524A1 |
The invention relates to a catalyst body (4) for degrading halogenated hydrocarbons, especially dioxins and/or furans, having an active mass comprising titanium dioxide, carbon and at least one active component which is selected from the...
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WO/2000/017136A1 |
Before at least one specific material selected from among 1,1,1,3,3-pentachloropropane, 1,1,3,3,-tetrachloropropene and 1,3,3,3-tetrachloropropene is fluorinated by reacting with HF, moisture is sufficiently eliminated from the material(...
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WO/2000/015588A1 |
A method for removing one or more fluorinated alkenes from a fluid comprises the step of contacting the fluid with an N-, S-, or P-containing nucleophile for a time sufficient to form an N-, S-, or P-containing nucleophile-fluoroalkene a...
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WO/2000/014177A1 |
It has been discovered that the polymerization of vinyl aromatic compounds, such as styrene, may be inhibited by the addition of a composition that contains a hindered hydroxylamine, and, optionally, a synergist together with the hindere...
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WO/2000/012449A1 |
An allylic compound is reacted with an organozinc compound Zn(R?6¿)¿2? to eliminate a group (the leaving group) from the allylic compound and to add a group from the organozinc compound to it in the presence of a copper salt catalyst a...
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WO/1999/062851A1 |
A process is disclosed for the manufacture of CF¿3?CF=CF¿2?, and optionally a least one compound selected from CF¿3?CH¿2?CF¿3? and CF¿3?CHFCHF¿2?. The process involves contacting a reactor feed including a precursor stream of at l...
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WO/1999/062849A1 |
A process for the manufacture of CF¿3?CF=CF¿2? is disclosed. The process involves contacting 2,3-dichloro-1,1,1,2,3,3-hexafluoropropane with at least 0.1 mole of hydrogen in a reaction vessel of titanium, nickel or iron or their alloys...
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WO/1999/058484A1 |
An azeotrope-like composition comprising a perfluorobutyl methyl ether and a brominated hydrocarbon. The azeotrope-like composition has excellent dissolving ability.
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