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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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WO/1999/057088A1 |
The preparation of gaseous products from the thermal decomposition of 1,2-dichloroethane is simplified if the cracked gas is cooled down to a temperature ranging from approximately 150 to 180 °C. Only one subordinated portion which cont...
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WO/1999/051553A1 |
A process is disclosed for the manufacture of hexafluoropropylene and 1,1,1,2,3,3,3-heptafluoropropane. The process involves: (a) feeding 1,1,2-trichloro-3,3,3-trifluoropropene-1, HF and Cl¿2? to a first reaction zone containing a catal...
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WO/1999/051554A1 |
The invention relates to a method for processing a product gas obtained through pyrolysis of 1,2-dichloroethane (EDC), wherein the product gas is broken down into its main components hydrogen chloride (HCL), vinyl chloride (VCM) and unre...
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WO/1999/051555A1 |
A process is disclosed for the separation of a mixture of HF and CF¿3?CC1FCF¿3?. The process involves placing the mixture in a separation zone at a temperature of from about -30 °C to about 100 °C and at a pressure sufficient to main...
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WO/1999/047479A1 |
The invention relates to a method for chlorinating ketones which apart from the carbonyl group are inert in relation to triarylphosphine dichlorides, except cyclopropyl methyl ketone. According to said method the ketones are reacted with...
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WO/1999/046226A1 |
The invention relates to a continuous method for producing propargyl chloride by reacting propargyl alcohol with a chlorinating agent in the presence of a catalyst. According to the invention, the chlorinating agent, propargyl alcohol an...
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WO/1999/043635A1 |
The invention concerns improved catalytic hydrofluorination of saturated or unsaturated organic compounds corresponding to the general formula C¿w?H¿x?Cl¿y?F¿z? (I) wherein w is an integer ranging between 1 and 6, x is an integer ran...
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WO/1999/031031A1 |
A stabilizer composition comprising a) an N-alkyl morpholine and b) a straight-chain or cyclic aliphatic amine containing no heteroatoms other than N with a boiling point of at least 150 °C. The stabilizer composition is useful for stab...
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WO/1999/026908A1 |
The invention provides a method for separating fluorocarbons from mixtures of fluorocarbon and hydrogen fluoride. In particular, the invention provides a method for separating fluorocarbons, such as pentafluoropropane, from azeotropic mi...
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WO/1999/026907A1 |
Preparation of a fluorine-containing organic compound by reacting a haloalkene with hydrogen fluoride wherein both the fluorine-containing organic compound and the haloalkene separately form azeotropes with hydrogen fluoride and wherein ...
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WO/1998/055429A1 |
A method of fluorinating an organic compound comprising reacting an organic compound with a fluorinating agent characterised in that a perfluorocarbon compound is present in the reaction medium. The perfluorocarbon compound may replace a...
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WO/1998/054117A1 |
A compound having the formula: CF¿3?CH¿2-w?(H¿1-x?CH¿2-y?R¿m?R'¿n?CH¿1-z?)¿p?H¿2-q
?CF¿3? wherein w=0, 1 or 2; x=0 or 1; y=0, 1 or 2; m=0, 1 or 2; n=0 or 1; z=0 or 1; p=1 or 2; and q=0, 1 or 2; with the provisos that 1$m(F)w+x$...
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WO/1998/050332A1 |
A process for separating carbon dioxide from an unsaturated fluorinated compound carbon dioxide mixture comprising contacting the unsaturated fluorinated compound carbon dioxide mixture with a semipermeable membrane to form at least one ...
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WO/1998/049125A1 |
A process for manufacturing allylhalide from gaseous propene and a gaseous halogen comprising introducing propene into a tubular loop reactor (2) through an inlet nozzle (3); introducing gaseous halogen into the tubular loop reactor (2) ...
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WO/1998/037043A2 |
A process is disclosed for producing the pentafluoropropenes of the formula CF�3?CX=CF�2?, where X is H or Cl. The process involves hydrodehalogenating CF�3?CCl�2?CF�3? with hydrogen at an elevated temperature in the vapor phas...
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WO/1998/033755A1 |
A process is disclosed for the manufacture of a pentafluoropropene of the formula: CFX=CYCF�3? where X is selected from H and F and where Y is F when X is H and Y is H when X is F. The process involves contacting a hexafluoropropane of...
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WO/1998/024744A1 |
This invention concerns new polyhalogen hexenes of the formula (I): CF�2?X-CFX-CH�2?-CH=CHR-CH�2?X, in which the groups X can be the same or different and any of which can stand for chlorine, bromine or iodine and R for hydrogen, C...
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WO/1998/022414A1 |
A process for the manufacture of vinyl fluoride (i.e., CH�2?=CHF, VF or 1141) from 1,1-difluoroethane (i.e., CH�3?CHF�2?, Fl52a or HFC-152a) is disclosed which involves contacting the 1,1-difluoroethane at an elevated temperature (...
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WO/1998/013346A1 |
A monomer composition contains (A) monomers which contain vinyl groups and in which a heteroatom from the group of halogens, nitrogen, oxygen, sulphur or silicium is associated to the vinyl group; and (B) a compound or a mixture of compo...
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WO/1998/012161A1 |
A method for the preparation of 1,1,1,3,3-pentafluoropropane (HFC-245fa) and 1-chloro-3,3,3-trifluoropropene (HCFC-1233). 1,1,1,3,3-pentachloropropane (HCC-240fa) is fluorinated with HF in a vapor phase in the presence of a vapor phase c...
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WO/1997/045464A1 |
Selected partially fluorinated 'alpha','omega'-dienes bearing -CF3 substitution can be free radically (co)polymerized to form polymers in which cyclic structures are present. The polymers are useful for films, coating and molded parts.
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WO/1997/043233A1 |
A process for preparing a fluorinated olefin having a fluorine atom bonded to either of the carbon atoms of the carbon-carbon double bond by reacting an alkali metal fluoride with a halogenated olefin which has in the molecule at least o...
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WO/1997/024306A1 |
A process and a system uses a direct chlorination reactor for producing ethylene dichloride by direct chlorination, without the need for an oxychlorination unit. This ethylene dichloride may be used to make vinyl chloride monomer. In the...
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WO/1997/024307A1 |
A process for producing 1,1,1,3,3-pentafluoropropane which involves the first step of reacting in a gas phase 1,1,1,3,3-pentachloropropane with hydrogen fluoride to thereby give 1,1,1-trifluoro-3-chloro-2-propene; and the second step of ...
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WO/1997/019751A1 |
Processes are disclosed for decreasing the chlorine to carbon ratio for halogenated hydrocarbons containing chlorine and from 1 to 6 carbon atoms, in the presence of a multiphase catalyst. The processes each involve (1) preparing a singl...
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WO/1997/009292A1 |
A process for the preparation of 4-bromo-1,1-difluorobut-1-ene comprising the step of reacting 2,4-dibromo-1,1,1-trifluorobutane with a defluorobrominating agent in a liquid reaction mass and recovering the desired product therefrom. The...
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WO/1997/008118A1 |
Novel fluorinated organic compounds of molecular structure (1) are described, wherein RF is a fluorinated carbon chain, R1H is hydrogen or a saturated hydrogen chain, R2H is hydrogen or a saturated hydrogen chain, provided that R1H and R...
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WO/1997/002226A1 |
This invention concerns processes for the preparation of fluoroolefins, including a process for the deiodofluorination of an iodine containing fluorocarbon comprising contacting said iodine containing fluorocarbon with a fluroolefin capa...
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WO/1996/041679A1 |
Advantageous processes are disclosed for the production of vinyl fluoride. Also disclosed are advantageous methods which may be employed for the preparation of catalysts useful in such processes. Included are methods which involve (i) re...
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WO/1996/037450A1 |
Allyl halide is produced in high yields and purity with minimal carbon formation using a process of: (1) initially reacting propylene and molecular halogen in a molar ratio of at least 2.5:1 in a "continuously stirred tank reactor" (CSTR...
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WO/1996/033612A1 |
The present invention is directed to compounds useful as moth attractants and to methods for controlling populations of the tomato moth Scrobipalpuloides absoluta with these compounds. The compounds are 3,8,11-tetradecatrienyl acetates, ...
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WO/1996/030322A1 |
Tetrafluoroethylene is obtained by subjecting metal fluoride, such as sodium fluoride, calcium fluoride or silicon fluoride, to a plasma to form a gaseous mixture of metal and reactive fluorine. This gaseous mixture is then reacted with ...
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WO/1996/030323A1 |
Metal fluoride and carbon are fed to a plasma flame to form a gaseous reaction mixture which is quenched to form tetrafluoroethylene. The plasma flame can be formed from a non-reactive gas and the metal fluoride and carbon then become pa...
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WO/1996/028404A1 |
Novel trifluoromethylated intermediates are provided which are useful in synthesizing trifluoromethylated organic compounds. Specifically, compounds of the formula: CF3CCl=CHCH2X are provided, which compounds are versatile intermediates ...
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WO/1996/025378A1 |
In the process of pyrolyzing chlorodifluoromethane to form tetrafluoroethylene, yield is improved by having a controlled concentration of perfluorocyclobutane in the feed to pyrolysis.
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WO/1996/022314A1 |
A fourth allotrope of carbon, an acetylenic carbon allotrope, is described. The acetylenic carbon allotropes of the present invention are more soluble than the other known carbon allotropes in many common organic solvents and possesses o...
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WO/1996/021355A1 |
Pesticidal compounds having general formula (I) or a salt thereof is provided, in which n represents an integer from 0 to 4; m represents an integer 0 or 1; each R independently represents a halogen atom or a nitro, cyano, hydroxyl, alky...
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WO/1996/015981A1 |
A process is provided for the recovery of hydrogen chloride in anhydrous form (44) from a dry mixture of hydrogen chloride with one or more non-condensable gases and which may also contain components heavier than hydrogen chloride (26), ...
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WO/1996/016003A1 |
Process for converting a chlorinated alkane into at least a less chlorinated alkene by reaction with hydrogen in the presence of a catalyst comprising palladium and a metal selected in the group comprised of silver, gallium, indium, thal...
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WO/1996/010047A1 |
Selected partially fluorinated 'alpha','omega'-dienes can be (co)polymerized to form polymers in which cyclic structures are present. A novel free radical polymerization process, in which the polymer obtained is dependent on the initiato...
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WO/1996/005157A1 |
A process for the production of a fluorine containing olefin is described which comprises passing a gaseous feed comprising a saturated hydrohalocarbon reactant having a fluorine substituent and one or more further halogen substituents t...
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WO/1996/003362A1 |
A process for the removal of (cyclo)aliphatic hexene and hexadiene isomers from allyl chloride, characterized by a chlorination step which is performed in the liquid phase.
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WO/1996/000707A1 |
A process for producing a fluorinated vic-dichloroalkene derivative and a fluorinated alkane derivative represented by the respective general formulae from an inespensive starting material: R1-CC1=CC1-R2, R1-CR3R4-CR5R6-R2, (wherein R1 a...
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WO/1995/032935A1 |
CF3CHFCHF2 production is disclosed which involves reacting CF3CF=CHF with HF at an elevated temperature over a catalyst selected from the group consisting of aluminum fluoride, fluorided alumina, metals supported on aluminum fluoride, me...
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WO/1995/032170A1 |
The proposed method of obtaining a monomer by the pyrolytic decomposition of a polymer and a device for carrying this out relates to organic and polymer chemistry. It offers a safe and convenient way of producing monomers of high purity ...
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WO/1995/031422A1 |
The invention relates to a cost effective and convenient process for the manufacture of fluorinated olefins of the formula RCF2CH=CH2 where R is CxClyFz and y + z = 2x + 1. The invention is also directed to a practical process for conver...
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WO/1995/021807A1 |
The conversion in the production of vinyl chloride by the thermal cracking of 1,2 -dichloroethane is determined by measuring the absorption of energy-rich radiation, the pressure and the temperature of the gases discharged from the crack...
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WO/1995/019333A1 |
A preparation of perfluoroolefins from fluoroform is described in which the fluoroform is pyrolyzed in a flame submerged in water in which the water acts as the walls of a reaction vessel.
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WO/1995/017365A1 |
Fluorinated olefins are produced by thermolysis of a silyl ester of a fluorinated aliphatic carboxylic acid in the presence of a catalyst which provides fluoride ion, such as potassium fluoride. The fluorinated olefins are useful as mono...
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