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| Number | Title | Issue Date |
| 7304192 | Method for producing chlorinated hydrocarbon having chlorinated tertiary carbon The present invention relates to a simple method for efficiently producing aromatic-substituted chlorinated hydrocarbons, for example, high-purity cumyl chloride (1,4-bis(1-chloro-1-methylethyl)benzene, p-DCC) that can be used as an initiator for cationic polymeriza... | 12/04/2007 |
| 7268262 | Method for recovering trans-1,2-dichloroethene Describes a method for recovering trans-1,2-dichloroethene from a liquid feed composition comprising both the cis-and trans-isomers of 1,2-dichloroethene and contaminating amounts of other chlorinated hydrocarbons, e.g., lower alkyl chlorinated hydrocarbons, such as... | 09/11/2007 |
| 7196235 | Process for producing fluorinated vinyl ether There is provided a process for producing a fluorinated vinyl ether from a fluorinated acid fluoride compound having an ester group as a precursor of a carboxylic acid group, or a SO2F group as a precursor of a sulfonic acid group, in high yield by simple... | 03/27/2007 |
| 7186869 | Purification of saturated halocarbons A process for removing one or more unsaturated halocarbons from a halocarbon mixture comprising one or more unsaturated halocarbons and one or more saturated halocarbons, which process comprises contacting the halocarbon mixture with a mixture of a solid chemical ox... | 03/06/2007 |
| 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 |
| 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 |
| 7102042 | Method for producing substituted fluorene monomers A method for preparing a composition of the formula in a yield greater than 50% where R1 is C 1-20 comprising the steps of combining fluorene or dibromo flourene, an excess of alkali metal hydroxide and a ha... | 09/05/2006 |
| 6987206 | Methods and materials for the preparation and purification of halogenated hydrocarbons 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 process steps include: (1) reacting carbon tetrachloride with vinyl ch... | 01/17/2006 |
| 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 |
| 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 |
| 6835860 | Iodohydroxylation of olefins Iodohydroxylated olefins can be prepared by treating an olefin with an aqueous solution of an iodine monohalide selected from iodine monochloride and iodine monobromide. ... | 12/28/2004 |
| 6825390 | Stabilization and use of propargyl bromide Propargyl bromide is effectively stabilized against shock or thermal decomposition by use therewith of an environmentally acceptable inert liquid solvent that forms an azeotrope with propargyl bromide. ... | 11/30/2004 |
| 6806396 | Disposal of fluoroform (HFC-23) The present invention relates to the co-pyrolysis of fluoroform and chlorodifluoromethane to form a mixture of useful fluoroolefin and saturated HFCs, notably, tetrafluoroethylene and hexafluoropropylene and CF3CHF2 and CF3CHFCF... | 10/19/2004 |
| 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 |
| 6794551 | Process for producing propargyl bromide This invention provides a process of producing propargyl bromide in the absence of a base. The process comprises: A) bringing together in a reaction zone under an inert atmosphere and in the absence of a base and in the presence of an inert diluent, a feed of... | 09/21/2004 |
| 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 |
| 5912371 | Method for preparing fatty acid chlorides A method for preparing fatty acid chlorides. The method comprises reacting a silylation product of a fatty acid comprising at 1east 2 aliphatically unsaturated bonds per molecule and a chlorinating agent.... | 06/15/1999 |
| 5750065 | Adsorption of PCB's using biosorbents A method for producing biosorbents for adsorption of PCB's in which at least one proteinaceous material is contacted with a molar excess of at least one PCB congener mixture, forming a protein/PCB congener mixture. The protein/PCB congener mixture is drie... | 05/12/1998 |
| 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 |
| 5689020 | High temperature chlorination process for the preparation of polychloroolefins A process is disclosed for preparing a compound selected from the group consisting of 1,1,3,3-tetrachloropropene and 1,3,3,3-tetrachloropropene. The process comprises a. admixing a hydrocarbon compound selected from the group consisting of propene, 1-chlo... | 11/18/1997 |
| 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 |
| 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 |
| 5446203 | Synthesis of haloenones and aryl or alkyl substituted enones or alkenes Alternative methods for synthesizing haloenones and haloakenes and their use as starting materials for synthesis of substituted or unsubstituted alkyl and aryl substituted enones and alkenes, including tamoxifen and tamoxifen analogs, using such haloenone... | 08/29/1995 |
| 5243109 | Tribromostyrene products and process for making them Tribromostyrene (TBS) is produced by the preparation of a TBS precursor, which is ଲ-bromoethyl-tribromobenzene (ଲ-BrBr3), and the successive elimination of hydrogen bromide from said precursor. The precursor is prepared by selective... | 09/07/1993 |
| 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 |
| 5132475 | Quaternary ammonium fluoride catalyzed halogenation of carbon acids A process is disclosed for chlorinating, brominating and/or iodinating an organic substrate containing both a single acidic hydrogen atom and at least one electron withdrawing group attached to the same carbon atom. The process replaces the single acidic ... | 07/21/1992 |
| 5113028 | Process for mixing ethane and chlorine gases A process for mixing hot ethane with chlorine gas using a mixer consisting of a main pipe through which ethane is conducted, and four or more jets through which chlorine gas is introduced into the main pipe. The angle between the axis of each jet and the ... | 05/12/1992 |
| 5051536 | Method for isomerizing 1,2-dichloroethene One stereoisomer of 1,2-dichloroethene is isomerized to the other stereoisomer in the liquid phase and in the presence of free radical initiator.... | 09/24/1991 |
| 4918252 | 1-halo-(Z,E)-7,10-dodecadiene and a method for the preparation thereof A novel and efficient synthetic route is proposed for the preparation of (Z,E)-9,12-tetradecadienyl acetate as a sex pheromone compound used for population control of the pest insects belonging to the genus of Spodoptera via an intermediate 1-halo-(Z,E)-7... | 04/17/1990 |
| 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 |
| 4814522 | Catalytic fluoroolefin transhalogenations Catalyzed halogen exchange between perhaloolefins to form products of the formulas: and wherein R1, R2, R3, R5, Rhu 6l , and R7 are individually selected from the group F, Cl, Br, C1 to C4 | 03/21/1989 |
| 4760211 | Process for producing brominated acenaphthylene and its condensates A process for recovering brominated acenaphthylene and its condensate in the form of powder, comprising dropping a solution of brominated acenaphthylene and its condensate produced from acenaphthene by reactions of bromination, condensation and dehydrobro... | 07/26/1988 |
| 4747914 | Process for the purification of 1,2-dichloroethane A process for the purification of 1,2-dichloroethane is described, in which the crude product, containing not more than 3% by weight of high-boilers, is distilled in a first column at 125° to 180° C. in such a way that the bottom product contains not mo... | 05/31/1988 |
| 4734534 | Preparing cis-olefinic compounds from acetylenic compounds Novel alumina-supported nickel boride catalysts prepared by the borohydride promoted reduction of nickel arsenate are described. Method of catalyst preparation and process for hydrogenation of acetylenic and diolefinic compounds employing the invention ca... | 03/29/1988 |
| 4716255 | Process for the production of 3,3-dichloro-2-methylpropene 3,3-dichloro-2-methylpropene is prepared by reacting 1-chloro-2-methylpropene with sulfuryl chloride in the presence of a catalytically effective amount of nitrogen-containing bases or phosphines. Suitable nitrogen-containing bases are preferably aliphati... | 12/29/1987 |
