Matches 1 - 50 out of 102 1 2 3 >
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7601878 Process and unit for production of perfluoroalkyl iodide telomers  
A solid catalyst used in, for example, production of a perfluoroalkyl iodide telomer is effectively and continuously recovered and the recovered catalyst is continuously recycled to the reactor for...
7504358 Nickel-substituted and mixed nickel-and cobalt-substituted chromium oxide compositions, their preparation, and their use as catalysts and catalysts precursors  
A crystalline alpha-chromium oxide where from about 0.05 atom % to about 2 atom % of the chromium atoms in the alpha-chromium oxide lattice are substituted by nickel atoms, and optionally,...
7396965 Method for producing fluorinated organic compounds  
A method for preparing fluorinated organic compounds wherein at least one fluorinated olefin is reacted with methyl fluoride in the gas-phase and in the presence of a Lewis Acid catalyst to form at...
7371904 Processes for synthesis of 1,3,3,3-tetrafluoropropene  
Disclosed is a process for the synthesis of 1,3,3,3-tetrafluoropropene which comprises, in one embodiment, reacting a compound of CF 3 X 1 with a compound of CX 2 H═CHX 3 , wherein X 1 , X 2 ,...
7230147 Process for functionalizing a double bond  
The invention concerns a method for functionalizing a double bond and, more particularly, a double bond bearing a metalloid atom. Said functionalization is produced by the action of perhalogenated...
7214815 Metallic copper catalyst for polyfluoroalkylethyl iodide production and process for producing polyfluoroalkylethyl iodide  
The present invention provides a metallic copper catalyst for use in an ethylene addition reaction to polyfluoroalkyl iodides, a process for efficiently producing a polyfluoroalkylethyl iodide...
7109386 Method for preparing a halogenated olefin  
Process for the preparation of a halogenated olefin by reaction of an alkyne and/or of an allene compound with a hydrogen halide in a liquid medium comprising at least one hydrohalogenation...
7102041 Continuous process for preparing halogenated compounds  
A process for preparing a haloalkane comprising: (a) contacting a haloalkane starting material with an alkene in the presence of an effective amount of a catalyst complex under conditions effective...
7094936 Process for preparing halogenated alkanes  
Methods and materials are provided for the production and purification of halogenated compounds and intermediates in the production of 1,1,1,3,3-pentafluoropropane. In a preferred embodiment, the...
7094934 Production process of hydrofluorocarbons  
In a process for producing a hydrogen-containing fluorinated hydrocarbon in which a halogenated hydrocarbon reaction raw material, which includes a chlorinated alkene and/or a hydrogen-containing...
7074434 Process for the separation of a mixture comprising at least one hydrofluoroalkane and hydrogen fluoride, processes for the preparation of a hydrofluoroalkane and azeotropic compositions  
Process for the separation of a mixture comprising at least one hydrofluoroalkane and hydrogen fluoride, according to which a hydrofluoroalkane/hydrogen fluoride mixture is reacted with at least...
7053253 Process for purifying hexafluoropropene dimers  
Perfluoro-4-methyl-2-pentene containing the undesirable perfluoro-2-methyl-2-pentene may be purified by contacting the mixture with at least a stoichiometric equivalent of an aqueous inorganic base...
7038095 Method for producing fluoroalkyl iodide telomer mixture and method for producing mixture fluorine-containing (meth) acrylate esters  
A mixture of fluoroalkyl iodide telomers represented by the formula: R f (CF 2 CF 2 ) n I wherein R f represents a fluoroalkyl group whose number of carbon atoms is in the range of 1 to 10, with...
6958422 Pyrolysis process  
The present invention relates to the pyrolysis of hydrochlorofluorocarbons to form fluoromonomers such as tetrafluoroethylene, the pyrolysis being carried out in a reaction zone lined with nickel...
6924403 Synthesis of hexafluoropropylene  
The present invention relates to the process of pyrolyzing tetrafluoroethylene to hexafluoropropylene by carrying out the pyrolysis in a tubular reactor that is lined with either nickel or nickel...
6919490 Method for continuous production of a perfluoroalkyl iodide telomer  
The present invention relates to a process for continuously producing a perfluoroalkyl iodide represented by the general formula R f (CF 2 CF 2 ) n I, wherein R f is a C 1-6 perfluoroalkyl and n...
6858763 Process for preparing elastomeric ethylene-hexafluoropropylene copolymer  
The present invention relates to a process for preparing an elastomeric ethylene-hexafluoropropylene copolymer with excellent vulcanization properties, which comprises emulsion polymerizing...
6730817 Method for preparing 1,1,1,3,3-pentafluoropropane  
1,1,1,3,3-Pentafluoropropane is produced by reaction between 1,1,1,3,3-pentachloropropane and hydrogen fluoride in the presence of a hydrofluorination catalyst. The 1,1,1,3,3-pentachloropropane may...
6720466 1,1,1,3,3-pentachloropropane process purge stream concentration using a secondary refluxed evaporator and secondary product recovery  
A process for economically producing 1,1,1,3,3-pentachloropropane under conditions which preserve the activity of the catalyst. In a preferred embodiment, a two-stage distillation process is...
6518467 Method of making hydrofluorocarbons and hydrochlorofluorocarbons  
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...
6472574 Production of 1,2-dihydro and 2,2-dihydro hexafluoropropanes and azeotropes thereof with HF  
CF 3 CHFCHF 2 production is disclosed which involves reacting CF 3 CF═CHF with HF at an elevated temperature over a catalyst selected from the group consisting of aluminum fluoride, fluorided...
6452057 Process for preparing halohydrocarbons in the presence of a co-catalyst  
Halohydrocarbons comprising at least 3 carbon atoms are obtained by batchwise reaction between a haloalkane and an olefin in the presence of a catalyst and a co-catalyst. The addition of at least...
6441256 Method for preparing of halogenated hydrocarbons  
Halohydrocarbons comprising at least 3 carbon atoms are obtained by reaction between a haloalkane and a haloolefin, in the substantial absence of nitrile, and by introducing the reactants in a...
6417413 Process for the preparation of halogenated ethanes  
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...
6399840 Method for the preparation of 1,1,1,3,3-pentachlorobutane  
1,1,1,3,3-pentachlorobutane is obtained by reacting carbon tetrachloride with 2-chloro-1-propene in the presence of at least one copper (I) or (II) compound as telomerization catalyst....
6369285 Process for preparing halohydrocarbons  
Halohydrocarbons containing at least 3 carbon atoms are obtained by reaction between a haloalkane and an olefin in the presence of a catalyst in a reaction medium which is essentially free of water.
6365676 Poly-perfluoroalkyl substituted polyamines as grease proofing agents for paper and foam stabilizers in aqueous fire-fighting foams  
The invention concerns a process for the reaction of a perfluoroalkyl iodide of the formula CF 3 (CF 2 ) h —I, where h is an integer from 4 to 18, with a compound having a terminal olefinic...
6300532 Process for addition of haloalkanes to alkenes catalyzed by an organophosphite compound  
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...
6191327 Method for producing dichloropentafluoropropanes  
The present invention relates to a simple method for producing 3,3-dichloro-1,1,1,2,2-pentafluoropropane (R225ca) and 1,3-dichloro-1,1,2,2,3-pentafluoropropane (R225cb) in good yield and at high...
6187978 Continuous process for manufacturing halogenated compounds  
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...
6184426 Addition of hydrofluorocarbons to fluoroolefins  
A process is disclosed for forming adducts of the formula: RR 1 R 2 CCR 1 R 2 F or (FR 1 R 2 CCRR 2 CH 2 ) 2 where R is CH 3 , CH 2 F, or F(CF 2 ) n CH 2 CH 2 (where n is an integer...
6153803 Process for the preparation of halohydrocarbons  
Halohydrocarbons comprising at least 3 carbon atoms are obtained by reaction between a haloalkane and a haloolefin in the presence of an organonickel compound as catalyst, and optionally in the...
6150565 Process using CF.sub.2 I.sub.2 and olefins for producing diiodo fluorocompounds, and products thereof  
A process is disclosed for making diiodofluorinated compounds of the formula ICF 2 (A) n I wherein n is an integer of at least 1 and each A is CXYCQZ wherein each X, Y, Q, and Z are each...
6040487 Process for the manufacture of halocarbons  
A liquid phase process is disclosed for producing halogenated alkane adducts of the formula: CAR 1 R 2 CBR 3 R 4 (where, A, B, R 1 , R 2 , R 3 and R 4 are defined in the specification) which...
5902914 Process for the preparation of halogenated alkanes  
A process for the preparation of halogenated alkanes is provided. In particular, a process is provided for the highly selective preparation of haloalkanes, including 1,1,1,3,3-pentachloropropane,...
5650545 Synthesis of perfluoroalkyl iodides  
The invention relates to a continuous process for the preparation of perfluoroalkyl iodides by thermal telomerization, in the gas phase, of tetrafluoroethylene with pentafluoroethyl iodide or...
5639923 Metal-catalyzed preparation of perfluoroalkyl iodide telomers  
The selectivity of copper as the catalyst for the reaction of short-chain perfluoroalkyl iodides with tetrafluoroethylene is increased if a further transition metal is employed as a cocatalyst.
5608126 Process for preparing 1,1,1,3,3-pentafluoropropane  
A process for preparing 1,1,1,3,3-pentafluoropropane, which comprises reacting 1,1-difluoroethylene with dichlorofluoromethane in the presence of a Lewis acid catalyst to form...
5574193 Initiators for telomerization of polyfluoroalkyl iodides with fluoroolefins  
This invention relates to the telomerization of polyfluoroalkyl iodides with polyfluoroolefins in the presence of strong fluorooxidizer initiators. The products obtained are useful in the...
5557019 Method for preparing dichlorodecafluoropentane and decafluoropentane  
A new 3,3-dichloro-1,1,1,2,2,4,4,5,5,5-decafluoropentane as a precursor of alternatives of refrigerants, etc. A method to obtain the target products at high yield and high selectivity by reacting...
5488189 Process for fluorinated propanes and pentanes  
The instant invention relates to producing fluorinated propanes and pentanes. More particularly it relates to producing perhalofluoropropanes and pentanes by reacting dihalodifluoromethanes with...
5434321 Method for producing dichloropentafluoropropanes  
A method for producing a dichloropentafluoropropane, which comprises reacting dichlorofluoromethane (R21) with tetrafluoroethylene (4F) in the presence of a Lewis acid catalyst for addition...
5395997 Process for the preparation of hydrofluorocarbons having 3 to 7 carbon atoms  
The invention relates to a process for preparing hydrofluorocarbons of the formulas CF 3 (CH 2 CF 2 ) n F comprising reacting at least one reactant selected from CCl 3 (CH 2 CCl 2 ) n Cl, CCl...
5326913 Process for preparing fluorinated compound  
A fluorinated compound of the formula: R--CCl 2 CF 2 CF 3 (I) in which R is a perfluoroalkyl group, a perchloroalkyl group, a polyfluoroalkyl group, a...
5254773 Process for preparing telomers from ethylene and alpha, omega-dibromoperfluoroalkylalkanes in the presence of organic free-radical generators  
A process is disclosed wherein a telomer having the formula BrCH 2 CH 2 (CF 2 CFX) n CH 2 CH 2 Br is prepared by reacting a telogen of the formula Br(CF 2 CFX) n CH 2 CH 2 Br with...
5185483 Process for preparing pentafluorodichloropropanes  
1,1,1,2,2-Pentafluoro-3,3-dichloropropane and 1,1,2,2,3-pentafluoro-1,3-dichloropropane are prepared in pure forms by reacting dichlorofluoromethane and tetrafluoroethylene, or chloroform,...
5157171 Process for chlorofluoropropanes  
A process for the preparation of chlorofluoropropanes of the formula C 3 HCl 2 F 5 by contacting monofluorodichloromethane with tetrafluoroethylene in the presence of a modified aluminum...
5087745 Process for the production of gamma-butyrobetaine  
Process, which is feasible on a commercial scale, for the production of gamma-butyrobetaine. For this purpose, butyrolactone with hydrogen chloride and an alcohol is converted to the chlorobutyric...
5087765 Process for preparing chlorotrifluoroethylene telomers and new telomers obtained  
In the process for preparing chlorotrifluoroethylene telomers by reaction of chlorotrifluoroethylene with CF 3 CF or R x --CF 2 OF (wherein R x may be also a perfluoroalkyl radical having 1 to...
5087777 Partially fluorinated alkenes having a tertiary structure  
Novel partially fluorinated alkenes having the Formula: ##STR1## wherein each R is the same or different and is selected from the group consisting of CF 3 , CHF 2 , CH 2 F, and CH 3 CF 2 , and R'...
Matches 1 - 50 out of 102 1 2 3 >