Class 570/220 - Dehalogenation or dehydrohalogenation with halogenation in separate zones

Subclass of Class 570 - Organic compounds -- part of the class 532-570 series
Definition: Process wherein one step removes an atom of halogen or hydrogen
No. of patents: 32
Last issue date: 12/18/2007

Number	Title	Issue Date
7309471	Method for producing unsaturated halogenic hydrocarbons and device suitable for use with said method An apparatus for producing ethylenically unsaturated aliphatic halogenic hydrocarbons by thermal cleavage of saturated aliphatic halogenic carbons using an apparatus that introduces an educt gas stream into a reactor which includes at least one supply conduit which ...	12/18/2007
7253328	Method for producing vinyl chloride monomer A method is provided for producing vinyl chloride monomer from methyl chloride and methylene chloride. In the method, methyl chloride is reacted with methylene chloride in the vapor phase in the presence of a catalyst to produce vinyl chloride and hydrogen chloride....	08/07/2007
6979754	Method for obtaining polymerizable vinyl chloride from a raw product derived from the pyrolysis of 1,2-dichloroethane The invention concerns a method for obtaining directly polymerisable vinyl chloride which consists in subjecting a cooled raw product derived from of pyrolysis of 1,2-dichloroethane, to another cooling process at a temperature not more than 40° C., under pressure r...	12/27/2005
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
6900363	Method for the production of 1,2-dichloroethane A process for preparing 1,2-dichloroethane which comprises (A) feeding an ethane-containing feed gas stream into a dehydrogenation zone and dehydrogenating ethane to ethane to give a product gas stream comprising ethane, ethane and...	05/31/2005
6426440	Method for preparing decomposition products from the thermal decomposition of 1,2-dichlorethane The work-up of the gaseous products from the thermal cracking of 1,2-dichloroethane is simplified if the cracking gases are cooled to a temperature range of about 150 to 180° C., only a subsidiary proportion, which comprises all the coke formed, being co...	07/30/2002
6410265	Gene encoding a putive efflux protein for solvents/antibiotics in Pseudomonas mendocina This invention relates to the isolation of a novel putative efflux gene from Pseudomonas mendocina. The putative efflux gene is useful for probing an organism's efflux system to gain an understanding of the mechanisms of solvent tolerance. The invention f...	06/25/2002
6103945	Process for converting the low-boiling by-products formed during the thermal cracking of 1,2-dichloroethane Ethylene is chlorinated in a reaction zone to form a product stream containing 1,2-dichloroethane, the latter being then thermally cracked in a cracking zone to form vinyl chloride. Light by-products formed during the thermal cracking step are chlorinated...	08/15/2000
5958757	Biological conversion of organic compounds Saturated aliphatic halocarbons, including environmental contaminants, are degraded to innocuous, environmentally acceptable compounds by contact, either in situ or in a bioreactor, with microorganisms that produce aromatic oxygenases, preferably with use...	09/28/1999
5841004	3-substituted-଱, ଲ-dibromoethylbenzene and process for preparing the same A novel 3-substituted ଱,ଲ-dibromoethylbenzene of formula (I): ##STR1## wherein X represents a halogen atom or a trihalomethyl group, which is useful as an intermediate for pharmaceuticals or agricultural chemicals, is prepared by a simple...	11/24/1998
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
4960962	Selective dehydrobromination ar-Bromoaromatics having an alkenyl side chain on the aromatic nucleus are formed by feeding a beta-bromoalkyl-ar-bromoaromatic compound, together with a substantial excess of water, into a thermal dehydrobromination zone held at or above 475° C., and ma...	10/02/1990
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
4849561	Liquid phase process for dehydrochlorination of haloalkanes in the presence of an initiator based on an organic chlorinated product The liquid phase dehydrochlorination of haloalkanes is performed with an initiator mainly comprising decachlorobutane and/or octachloro-1-butene. The process is applicable, in particular, to the production of chloroethylenes from the corresponding polychloroet...	07/18/1989
4760206	Process for removing butadiene from vinyl chloride in a quench tower Ferric chloride (FeCl3), a known chlorination and polymerization catalyst for 1,3-butadiene ("BD"), can nevertheless be effectively used in a packed or trayed quench tower, operating under essentially anhydrous conditions, without plugging it. ...	07/26/1988
4650914	Process for producing 1,1,2,3-tetrachloropropene A process is disclosed for preparing 1,1,2,3-tetrachloropropene comprising allylic rearrangement of 2,3,3,3-tetrachloropropene using a substantially anhydrous ferric chloride catalyst. Alternatively, 1,1,2,3-tetrachloropropene is prepared by dehydrochlori...	03/17/1987
4590317	Process for minimizing corrosion and coking in an ethylene dichloride plant A process is disclosed for the economical operation of a commercial ethylene dichloride (EDC) cracking furnace which typically is prone to coking of the tubes through which the EDC is flowed. The EDC cracking furnace is found to be critically sensitive to...	05/20/1986
4590318	Method for producing vinyl chloride 1,2-Dichloroethane is pyrolyzed in a pyrolysis furnace to produce a stream comprising vinyl chloride and 1,2-dichloroethane. The stream is removed from the furnace and introduced to essentially unheated conduit means to establish a stream flowing in the c...	05/20/1986
4535194	Process for producing 1,1,2,3-tetrachloropropene A process is disclosed for preparing 1,1,2,3-tetrachloropropene comprising allylic rearrangement of 2,3,3,3-tetrachloropropene using a substantially anhydrous ferric chloride catalyst. Alternatively, 1,1,2,3-tetrachloropropene is prepared by dehydrochlori...	08/13/1985
4400552	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...	08/23/1983
4400550	Synthesis of the navel orange worm pheromone (Z,Z)-11,13-hexadecadienal A process for the synthesis of (Z,Z)-11-13-hexadecadienal is disclosed, starting with undecylenic alcohol....	08/23/1983
4337368	Reagent and method for decomposing halogenated organic compounds A reagent, comprising the product of the reaction of an alkali metal with a polyglycol or a polyglycol monoalkyl ether and oxygen, effects complete decomposition of halogenated organic compounds, such as polychlorinated biphenyls (PCBs), when mixed therew...	06/29/1982
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
4246205	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...	01/20/1981
4233251	Process for preparing hexachlorocyclopentadiene There is disclosed a process for the production of hexachlorocyclopentadiene comprising the steps of: (a) reacting liquid cyclopentadiene and chlorine at a temperature of from about 0 to about 100 degrees centigrade until a minimum of four chlorine atoms ...	11/11/1980
4125564	Process for producing chloroprene Chloroprene is produced by reacting 3,4-dichlorobutene-1 with a base in the presence of thiodiphenyl amine and 2,6-di-tertiarybutyl-p-cresol and preventing clogging of the equipment. 3,4-Dichlorobutene-1 is produced by an isomerization of the reaction mix...	11/14/1978
4119674	Process for production of 1,1,1-trichloroethane and vinylidene chloride An improved process for preparation of 1,1,1-trichloroethane and/or vinylidene chloride by the direct high temperature chlorination of ethane, ethyl chloride, ethylene, 1,1-dichloroethane or mixtures thereof wherein the relatively small quantities of unsa...	10/10/1978
3992460	Purging of tars and carbon from chlorinated hydrocarbon effluent An effluent containing chlorinated hydrocarbons and tar, withdrawn from a reactor employing molten copper chlorides and oxychloride, is quenched to separate carbon and tars, and the separated carbon and tars introduced into the reactor to effect combustio...	11/16/1976
3949009	Process for preparing trichloroethylene A process for preparing trichloroethylene by chlorinating 1,2-dichloroethane in the liquid phase in the presence of ethylene followed by pyrolytic chlorination or dehydrochlorination of the reaction product. The 1,2-dichloroethane is chlorinated in the li...	04/06/1976
3937744	Vinyl chloride process Process for producing vinyl chloride from ethane by contacting, in a first reactor, ethane and chlorine and/or hydrogen chloride, as fresh feed, and as recycle, hydrogen chloride, ethyl chloride, ethylene and unconverted ethane with a molten mixture, incl...	02/10/1976

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Class 570/220 - Dehalogenation or dehydrohalogenation with halogenation in separate zones