Class 570/230 - Dehalogenation or dehydrogenation

Subclass of Class 570 - Organic compounds -- part of the class 532-570 series
Definition: Process wherein an atom of halogen or an atom of hydrogen
No. of patents: 38
Last issue date: 02/08/2011

Number	Title	Issue Date
7884255	Chemical production processes and systems Chemical Production Processes and Systems. Chemical production processes are provided that include replacing a halogen of an unsaturated halocarbon to produce an unsaturated hydrohalocarbon. Chemical production systems are provided that include a reaction zone coupl...	02/08/2011
7473810	Method of dechlorinating organic compounds comprising vicinal chlorides Provided is a method for selectively preparing 2-chloropentafluoropropene comprising catalytic dechlorination of 1,2,2-trichloro-1,1,3,3,3-pentafluoropropane in the presence of hydrogen and a noble metal catalyst. Also provided is method for dechlorinating a vicinal...	01/06/2009
7312368	Method for selective reduction of aromatic compounds A method for the selective reduction of an aromatic compound. The present invention provides a method for pre-venting the reduction of at least one halogen substituted aromatic ring of an aromatic compound, while allowing the reduction of at least one functional gro...	12/25/2007
7164050	Preparation of halo-olefin A process for preparing a halo-olefin to minimize one or more side reactions which form at least one impurity, said process comprising contacting a halogenated hydrocarbon with a metal dehalogenating agent dissolved in a solvent under conditions sufficient to dehalo...	01/16/2007
6984763	Oxidative halogenation and optional dehydrogenation of c3+hydrocarbons 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 optionally, a source of oxyge...	01/10/2006
6933417	Process for vinyl chloride manufacture from ethane and ethylene with partial CHl recovery from reactor effluent 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 partially recovered from the...	08/23/2005
6909024	Process for the conversion of ethylene to vinyl chloride and novel catalyst compositions useful for such process 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, and further permits ethane to ...	06/21/2005
6797845	Process for vinyl chloride manufacture from ethane and ethylene with immediate HCl recovery from reactor effluent 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 reactor effluent in the first u...	09/28/2004
6166277	Process for evaporating 1,2-dichloroethane (EDC) A process for evaporating 1, 2-dichloroethane (EDC) prior to its thermal decomposition (pyrolysis) is provided so that it facilitates the heating of the liquid-phase EDC at temperatures below 100° C. to meet the inlet conditions for the pyrolysis zone, w...	12/26/2000
5716590	Catalytic hydrodehalogenation of halogen-containing compounds of group IV elements Catalytic dehalogenation (or hydrodehalogenation) of halogen-containing compounds of elements of group IV of the periodic table in the presence of hydrogen is carried out using a finely-dispersed catalytically active material which comprises silicon and a...	02/10/1998
5705728	Process for the production of ethylene and mixture containing ethylene The present invention provides an efficient process for the production of ethylene or a mixture of ethylene and vinyl chloride, in which some 1,2-dichloroethane (EDC) may also be produced, by reacting chlorine with ethane. The process is characterized by ...	01/06/1998
5705720	Continuous process for cracking 1,2-dichloroethane A thermal process for cracking 1,2-dichloroethane to form vinyl chloride comprising heating 1,2-dichloroethane in a reaction zone at a temperature between 300° and 650° C. under an absolute pressure between 1 and 40 bars; said heating being conducted in...	01/06/1998
5663472	Production of alkenes A process for reacting ethane with chlorine to produce a mixture of ethylene and vinyl chloride is disclosed. The process involves the intimate mixing of ethane and chlorine in an ethane to chlorine ratio of at least about 0.9:1 at a temperature such that...	09/02/1997
5600042	Process for the production of vinyl chloride The purpose of this invention is to describe a new process for the manufacture of choroethene (C2 H3 Cl). This new process involves the use or ethylene (C2 H4) as a feedstock. Highly chlorinated ethenes or metha...	02/04/1997
5476979	Processes for converting chlorinated alkenes to useful, less chlorinated alkenes A process for converting a chlorinated alkene feedstock including two or more chlorines to reaction products including a less-chlorinated alkene in a commercially substantial proportion, comprising reacting the chlorinated alkene feedstock with hydrogen i...	12/19/1995
5453557	Processes for converting chlorinated byproducts and waste products to useful materials A process for the catalytic conversion of various chlorinated hydrocarbon byproducts and waste products especially to less chlorinated, useful or salable products, in which a chlorinated hydrocarbon feedstock containing two or more chlorines is reacted wi...	09/26/1995
5345032	Use of metal chelate complexes in dehalogenation A method for dehalogenation of organohalogen compounds, e.g. environmental pollutants in industrial waste. The organohalogen is reacted with a reducing agent in the presence of a selected metal-centered corrin, porphyrin or phthalocyanine complex. Preferr...	09/06/1994
5237114	Removal of catalyst from chloroprene by treatment with oxy acid Quaternary ammonium phase transfer catalyst is removed from the dehydrochlorination product of 3,4-dichlorobutene-1 by treatment of the organic, chloroprene-containing phase with an oxy acid which combines with the catalyst to form a separate phase....	08/17/1993
5227560	Chlorination and elimination process and some products thereof Active methine compounds are chlorinated by contacting such compounds with a perchloroalkane and aqueous base in the presence of a phase transfer catalyst which is an tetraalkylonium hydroxide. Chlorinated products, preferably tertiary alkyl chloro compou...	07/13/1993
5208393	Process for the manufacture of chloroform A process for the manufacture of chloroform by catalytic hydrogenolysis of carbon tetrachloride in liquid phase, wherein liquid phase carbon tetrachloride is reacted with hydrogen gas or a gas containing molecular hydrogen, at a pressure below 8,000 kPa a...	05/04/1993
5196617	Method of hydrodehalogenating halogenated organic compounds in aqueous environmental sources A process for hydrodehalogenating halogenated organic compounds present in a contaminated aqueous environmental source in which the halogenated organic compounds are reacted with hydrogen gas or a source of hydrogen gas in the presence of a catalyst of pa...	03/23/1993
5177272	Process for preparing perhalogenated olefins The invention relates to a process for preparing perhalogenated olefins which comprises reacting a perhalogenated alkane, having at least one atom of a halogen different from fluorine, with a tris-dialkylamino phosphine at temperature not higher than 60°...	01/05/1993
5097081	Hydrodechlorination of higher chloromethanes The highly chlorinated methanes, e.g., carbon tetrachloride, are improvedly dechlorinated by reacting same with hydrogen in the presence of oxygen or an oxygen-containing gas, e.g., air, and a catalytically effective amount of a metal of the copper or pre...	03/17/1992
5091603	Process for the preparation of trichloroethylene In the process, a copper/rhodium catalyst impregnated with 0.1 to 10.0% by weight, based on the total weight of active charcoal catalyst support and active components, of a water-soluble phosphonium halide is employed for the preparation of trichloroeleth...	02/25/1992
4943671	Reductive dehalogenation of organic halogen compounds Organic halogen compounds in which one or more halogen atoms are covalently bonded to the carbon are subjected to reductive dehalogenation by reaction with a hydrocarbon in the presence of carbon at elevated temperatures with formation of a hydrogen halid...	07/24/1990
4558167	Hydrogen chloride-propylene separation Hydrogen chloride is recovered from a mixture with propylene by extractive distillation with an inert extraction solvent to minimize reaction between hydrogen chloride and propylene during such distillation. The temperature and pressure conditions are coo...	12/10/1985
4514409	Combating fungi with novel 5-aryloxy-5-azolyl-3,3-dimethylpent-1-en-4-ones and -ols 5-Aryloxy-5-azolyl-3,3-dimethylpent-1-en-4-ones and -ols of the formula ##STR1## in which Ar is an optionally substituted aryl group, Az is a 1,2,4-triazol-1-yl, 1,2,4-triazol-4-yl or imidazol-1-yl group, and B is a keto group of a CH(OH) grouping, or addition...	04/30/1985
4504452	Coproduction of perchloroethylene, phosgene, and silicon tetrachloride Perchloroethylene, phosgene, and silicon tetrachloride are coproduced by passing vaporous carbon tetrachloride into contact with porous silica at a temperature of 800° to 950° C. The silica is disposed as a bed of granules have a surface area of from 0....	03/12/1985
4460797	Method for decomposition of halogenated organic compounds A reagent comprising the product of the reaction of an alkali metal hydroxide with a polyglycol or a polyglycol monoalkyl ether and oxygen, effects complete decomposition of halogenated organic compounds, such as polychlorinated biphenyls (PCBs), when mix...	07/17/1984
4440947	Preparation of substituted alpha-halogeno-propionic acids and their derivatives Substituted ଱-halogenopropionic acids and their derivatives of the general formula ##STR1## wherein R1 to R3, Y and X have the meanings given in the description, are prepared by a process which is characterized in that ...	04/03/1984
4302617	Conversion of ethyl chloride to vinyl chloride Monohalogenated olefins are prepared from halo-alkanes containing 2 to 6 carbon atoms and at least two hydrogen atoms on adjacent carbons by dehydrogenation of the halo-alkanes at a temperature from about 400° to about 700° C. in the presence of oxygen ...	11/24/1981
4265836	Process for producing cis-pent-2-enyl-1-chloride A process is described for the preparation of cis-pent-2-enyl-1-chloride according to the reaction: ##STR1##...	05/05/1981
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
4231969	Production of hexachlorocyclopentadiene Hexachlorocyclopentadiene is produced by the use of a molten salt mixture of cuprous and cupric chloride, with the reaction effluent including the product, chlorine, hydrogen chloride, unreacted feed and organic byproduct, as well as entrained molten salt...	11/04/1980
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
4042639	Oxychlorination process Contacting the vapor product of an ethane oxychlorination reaction with relatively cold, liquid, aqueous hydrogen chloride to produce an absorbate containing substantial amounts of inorganic constituents, including hydrogen chloride and water, that were i...	08/16/1977
3987119	Production of vinyl chloride from ethane A process is disclosed for the production of ethylene dichloride from ethane. Ethane is introduced into an autothermic (self-sustaining) cracking zone together with controlled proportions of chlorine and oxygen. The autothermic cracking zone is maintained...	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 570/230 - Dehalogenation or dehydrogenation