Class 570/234 - Elemental halogen reactant

Subclass of Class 570 - Organic compounds -- part of the class 532-570 series
Definition: Process wherein elemental halogen is employed as a source
No. of patents: 29
Last issue date: 09/26/2006

Number	Title	Issue Date
7112709	Method for reusing heavy end by-products in the manufacture of polychlorinated alkanes A method for recovering much of the carbon and chlorine value in the heavy ends and other undesired by-products formed during the production of a C3 or higher polychlorinated alkane through the reaction of carbon tetrachloride with an olefine or chlorinat...	09/26/2006
7103956	Method of fabricating a spherical cavitation chamber A method of fabricating a spherical cavitation chamber. Depending upon the chamber's composition and wall thickness, chambers fabricated with the disclosed techniques can be used with either low or high pressure systems. During chamber fabrication, initially two sph...	09/12/2006
6881872	Less colored trans-1,3-dichloropropene and process for its production Less colored trans-1,3-dichloropropene and a process for producing it, are presented. A composition comprising cis-1,3-dichloropropene, trans-1,3-dichloropropene and C6 compounds, is subjected to a distillation step and to a step of reacting chlori...	04/19/2005
6774270	Method of removing hexafluoropropylene dimers A method of removing hexafluoropropylene dimers (“HFP dimers”), dimer hydrides and other oligomers from a fluid is described. The method comprises heating the fluid to isomerize the HFP dimers to the thermodynamic isomer, and contacting the fluid with a tertiary...	08/10/2004
6011186	Process for manufacturing allylhalide and equipment to be used therefor 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) through several ax...	01/04/2000
5629460	Process for the preparation of 1,1,1,3,3,3-hexafluoro-2-propanone A vapor phase process for the preparation of fluorinated ketones, such as 1,1,1,3,3,3-hexafluoro-2-propanone via oxidation of hydrofluorocarbons, such as 1,1,1,3,3,3-hexafluoropropane, with an oxidizing agent and elemental fluorine at temperatures ranging...	05/13/1997
5504266	Process to make allyl chloride and reactor useful in that process 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 about 2.5:1 in a "continuously stirred tank reactor" (CSTR) zone under...	04/02/1996
5449833	Process for the preparation of chlorinated polyolefin and chlorosulfonated polyolefin A novel process for the preparation of a chlorinated polyolefin having excellent low temperature characteristics and brightness is provided which comprises allowing a polyolefin dissolved or suspended in a solvent to undergo chlorination reaction with chl...	09/12/1995
5426256	Minimizing heavy ends production in the manufacture of perchloroethylene from hydrocarbons or partially chlorinated hydrocarbons Perchloroethylene and hydrogen chloride are made by thermal noncatalytic chlorination of hydrocarbons and/or their partially chlorinated derivatives using carbon tetrachloride as a reactive diluent under conditions which maximize consumption of carbon tet...	06/20/1995
5399797	Manufacture of perchloroethylene by chlorinating hydrocarbons and partially chlorinated hydrocarbons in the presence of hydrogen Perchloroethylene and hydrogen chloride are made by noncatalytic thermal chlorination of hydrocarbons and/or their partially chlorinated derivatives by reacting them with chlorine in the presence of hydrogen and carbon tetrachloride as a reactive diluent,...	03/21/1995
5367105	Process and device for production of allyl chloride A process for the production of allyl chloride, which comprises introducing propylene and chlorine into a reactor having at least one propylene-injection opening and at least one chlorine-injection opening, these openings being independent of each other, ...	11/22/1994
5315050	Manufacture of perchloroethylene from carbon tetrachloride in the presence of hydrogen Perchloroethylene and hydrogen chloride are made by thermal noncatalytic pyrolysis of carbon tetrachloride in the presence of elemental hydrogen and chlorine under conditions which maximize consumption of carbon tetrachloride while minimizing the producti...	05/24/1994
5099085	Chlorination reactions and oxychlorination reactions in the presence of honeycomb monolithic catalyst supports The use of hitherto known supported catalysts in chlorination processes and oxychlorination processes leads to high pressure drops and to the formation of hot spot temperatures in the reactor. When honeycomb monolithic catalyst supports provided with a mu...	03/24/1992
4899000	Production of allyl chloride A process is provided for the production of allyl chloride from three carbon atom hydrocarbons (propane and/or propylene) using hydrogen chloride or hydrogen chloride/chlorine mixtures as the chlorinating agent. The process includes reaction steps operate...	02/06/1990
4870220	Process for manufacturing methallyl chloride A method for manufacturing methallyl chloride by reacting isobutene with chlorine in the gas phase is disclosed. The reaction is carried out in a distributed nozzle-mixing reactor which enables the reaction to proceed in a stabile manner even without addi...	09/26/1989
4832873	Process for producing polybrominated higher alkylbenzenes Polybrominated higher alkylbenzenes may be produced by reacting the corresponding hydrocarbon material with bromine chloride in an excess bromine reaction medium in the presence of an antimony halide catalyst....	05/23/1989
4634778	Process for preparing chlorinated ethylenic derivatives Process for preparing chlorinated ethylenic derivatives of the formula ##STR1## in which R1 represents acetyl, formyl optionally in the form of an acetal, hydroxy optionally as an ether or ester, alkyloxycarbonyl, alkyl of 1 to 12 carbon a...	01/06/1987
4513154	Process for consecutive competitive gas phase reaction A process for consecutive-competitive gas phase halogenation of organic compounds, i.e. alkanes, alkenes and benzene, alkyl benzenes and alkenyl benzenes containing labile hydrogens and having no more than 12 and 9 carbon atoms, respectively, in a thin re...	04/23/1985
4329525	Production of chlorinated compounds by use of molten salts A compound is chlorinated with chlorine to produce chlorinated product and hydrogen chloride byproduct. Recovered hydrogen chloride byproduct is contacted with oxygen and a molten salt mixture containing the higher and lower valent chlorides of a multival...	05/11/1982
4319062	Allyl chloride process An improved process for production of allyl chloride which comprises (1) thermally chlorinating propylene above 300° C., but below that at which substantial carbon formation is effected, (2) separating the allyl chloride from its by-products, (3) subject...	03/09/1982
4255597	Process for preparing hexachlorocyclopentadiene There is disclosed a process for the production of hexachlorocyclopentadiene comprising the steps of: 1. Reacting liquid cyclopentadiene and chlorine at a temperature of from about 0° to about 100° C. until an average of at least 4 chlorine atoms has be...	03/10/1981
4254039	Process for the preparation of tetrahydrofuran This invention relates to a process for preparing tetrahydrofuran which comprises reacting a cis-1,4-dihalobutene-2 with water in the presence of a catalytically effective amount of strong acid to provide 2,5-dihydrofuran and thereafter hydrogenating said...	03/03/1981
4247532	Purification of electrolytically-produced chlorine A process is described which accomplishes improvement in the quality of the chlorine product of brine electrolysis. One or more objectionable impurities are eliminated from said chlorine through contact with hydrogen chloride, or an equivalent combination...	01/27/1981
4217311	Method of preparing vinyl chloride Vinyl chloride is prepared by gas-phase chlorination of a gaseous mixture containing 5 to 50 vol. % of ethane and 50 to 95 vol. % of ethylene. The amount of chlorine supplied into the reaction zone is determined by the formula: number of chlorine moles=3m...	08/12/1980
4168271	Unsaturated vitamin E intermediates--dehydro and didehydro ଱-tocopherols New dehydrotocopherols, namely cis- and trans- 3',4'-dehydrotocopherol; cis- and trans- 4',5'-dehydrotocopherol; and 4',4'-a-dehydrotocopherol, and new didehydrotocopherols, namely cis- and trans- 3',4'-11',12'-didehydrotocopherol; cis- and trans- 4'...	09/18/1979
4071571	Control of molten salt oxidation in production of chlorinated hydrocarbons In the production of chlorinated hydrocarbons by contacting a molten salt mixture of the higher and lower chloride of a multivalent metal, such as a mixture of cuprous and cupric chloride, with molecular oxygen to effect oxidation to the oxychloride, foll...	01/31/1978
4046821	Oxychlorination of hydrocarbons in the presence of non-halide copper containing catalysts Copper chloride has been employed as a reagent for oxychlorination of hydrocarbons. It has now been found that a non-halide copper compound in combination with a rare earth compound is an excellent oxychlorination catalyst, e.g. a CuCO3 - CeO	09/06/1977
3987118	Novel process for the oxychlorination of ethane There is disclosed a process for the oxychlorination of ethane which comprises reacting a gaseous mixture of ethane, oxygen and a chlorination agent such as hydrogen chloride, preferably in a fluidized bed, while in the presence of a copper substituted fa...	10/19/1976
3976705	Prevention of hydrochlorination A method for preventing the undesired hydrochlorination of unsaturated hydrocarbons and chlorohydrocarbons in the presence of aluminum chloride involves the addition of a material capable of preferentially inactivating the ability of the AlCl3 ...	08/24/1976

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Class 570/234 - Elemental halogen reactant