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| Number | Title | Issue Date |
| 7378449 | Poly(bromoaryl)alkane additives and methods for their preparation and use An additive mixture useful as a flame retardant is described. The mixture is comprised of (i) a poly(bromophenyl)alkane having in the molecule in the range of 13 to 60 carbon atoms and in the range of two to four aryl groups and (ii) a poly(bromophenyl)bromoalkane h... | 05/27/2008 |
| 7253303 | Fluorination of dicarbonyl compounds The invention provides a method for the preparation of a dicarbonyl compound of formula (I) R1COCFR2COR3 wherein R1 is selected from alkyl, substituted alkyl, cycloalkyl, aryl, substituted aryl and acetoxy, R2 i... | 08/07/2007 |
| 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 |
| 6977316 | Direct one-step synthesis of trifluoromethyl iodide A catalytic one-step process for the production of CF3I by reacting, preferably in the presence of a source of oxygen, a source of iodine with a reactant of the formula: CF3R where R is —SH, —S—S—CF3, —S... | 12/20/2005 |
| 6956143 | Process for dissolving salts in 1,2-dichloroethane using ultrasound and a device for carrying out said process The invention relates to a process and a device for the dissolution of salt that is hardly soluble, especially sodium chloride and other poorly soluble salts in 1,2 dichloroethane, which primarily are to be used in direct chlorination plants for the production of 1,... | 10/18/2005 |
| 6841708 | Method of producing ethylene (di)chloride (EDC) With a method or a device for producing 1,2-dichloroethane or ethylene (di)chloride (EDC) with the use of a circulating reaction medium and a catalyst, whereby ethylene and chlorine are supplied to the reaction medium, the goal is to permit the catalytic chlorinatio... | 01/11/2005 |
| 6743825 | Poly(bromoaryl)alkane additives and methods for their preparation and use An additive mixture useful as a flame retardant is described. The mixture is comprised of (i) a poly(bromophenyl)alkane having in the molecule in the range of 13 to 60 carbon atoms and in the range of two to four aryl groups and (ii) a poly(bromophenyl)bromoalkane h... | 06/01/2004 |
| 6150573 | Concurrent production of trichloroethane isomers 1,1,1-Trichloroethane (viz., methylchloroform) and 1,1,2-trichloroethane are produced in the same reactor by feeding molecular chlorine and chloroethene (viz., vinyl chloride) as well as 1,1-dichloroethane to the reactor. The ratios at which the two trich... | 11/21/2000 |
| 6114591 | Process for preparing highly chlorinated paraffins The chlorination of paraffins is carried out in the presence of water and in the absence of an organic solvent. In this way, it is possible to prepare highly chlorinated paraffins in a simple manner. The presence of hydrochloric acid even at high temperat... | 09/05/2000 |
| 5789580 | Selectively fluorinated organic compounds A process for the preparation of a selectively fluorinated organic compound, which process includes reaction of a precursor of said organic compound, the precursor containing at least one Group VI element selected from sulfur, selenium and tellurium, with... | 08/04/1998 |
| 5773673 | Method of making chlorinated hydrocarbons Disclosed is a method of making chlorinated hydrocarbons. A mixture is prepared of a hydrocarbon or partially chlorinated hydrocarbon from C18 to C30 and either benzotrifluoride or parachlorobenzotrifluoride in an amount sufficient t... | 06/30/1998 |
| 5495058 | Non-ozone depleting chlorination solvents A process for the chlorination of a paraffin wax is described which includes the steps of contacting the paraffin wax or partially chlorinated paraffin wax with chlorine wherein the improvement is the use of a non-ozone depleting aromatic solvent with a b... | 02/27/1996 |
| 5449801 | Reactive distillation process for free radical halogenation A process for the selective high yield halogenation R--CH3 wherein R is ##STR1## Si(Cl)m (CH3)n, wherein m is 1 to 3, n is 1 to 3 and m+n is 3; phenyl; or phenyl substituted with Cl, Br, F, OR1, ... | 09/12/1995 |
| 5436378 | Drying of hydrocarbon/hydrochloric acid/water admixtures Water-containing mixtures of at least one hydrocarbon/halocarbon and hydrochloric acid, e.g., the methyl chloride feedstream in conventional process for the synthesis of chloromethanes, are desiccated by intimately contacting such mixtures with an effecti... | 07/25/1995 |
| 5276226 | Low temperature halogenation of alkanes The invention relates to a process for selectively producing alkyl halides from alkanes, such as methane and ethane at relatively mild temperatures and pressures in an organic liquid phase in the presence of halogen and transition metal complex. The alkan... | 01/04/1994 |
| 5268518 | Reactor feed pipe design Process and apparatus for enhancing entrainment and self-stirring adjacent the entry of a reactor vessel of at least partly-reacted materials in an incoming stream of reactants.... | 12/07/1993 |
| 5144067 | Process for the coproduction of alkyl iodides and alpha-iodocarboxylic acids and/or anhydrides thereof Disclosed is a process for the coproduction of (1) an alkyl iodide and (2) an -iodocarboxylic acid, a mono--iodocarboxylic anhydride or a mixture thereof which comprises contacting a mixture of an iodine compound and a carboxylic anhydride w... | 09/01/1992 |
| 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 |
| 5023387 | Liquid feed injection in a chloromethanes process An adiabatic vapor phase chlorination of methylene chloride, methyl chloride or a mixture thereof is improved by the injection of a portion of the methylene chloride, methyl chloride or mixture thereof into the reactor in the liquid state under conditions... | 06/11/1991 |
| 4990708 | Process for the preparation of dibromomethane A process for the preparation of dibromomethane is described, in which gaseous methyl bromide and bromide are reacted as temperatures of 300° C. or higher. The reaction is highly selective to DBM and almost quantitative Br2 conversion is obtai... | 02/05/1991 |
| 4765876 | Simultaneous production of higher chloromethanes The higher chloromethanes, i.e., CH2 Cl2, CHCl3 and CCl4, are simultaneously produced by chlorinating methyl chloride with chlorine in a first reaction zone A, chlorinating at least one of the higher chlorometha... | 08/23/1988 |
| 4746760 | Process for functionalizing alkanes Process for functionalizing saturated hydrocarbons comprising: (a) reacting said saturated hydrocarbons of the formula: wherein H represents a hydrogen atom; and R1 represents a saturated hydrocarbon radical, with a metal complex of the formula: wherei... | 05/24/1988 |
| 4650916 | Removal of molecular chlorine from 1,2-dichloroethane compositions contaminated with molecular chlorine Olefins containing at least 7 carbon atoms are used to remove molecular chlorine form compositions comprising 1,2-dichloroethane and a contaminating amount of molecular chlorine.... | 03/17/1987 |
| 4614572 | Liquid phase chlorination of chlorinated methanes This invention relates to an improved liquid phase chlorination process for the chlorination of methyl chloride to preferentially produce methylene chloride. The chlorine is provided to the reaction mixture in a mole percent, based upon the total moles of... | 09/30/1986 |
| 4518813 | Optically active units for the synthesis of the side chain of (R,R,R)--tocopherol and their preparation (2R,6R)-1-Chloro-2,6,10-trimethyl-undecane I, (R)-(+)-ଲ-chloro-isobutyric acid II, (S)-(+)-1-bromo-3-chloro-2-methylpropane IV and (2R)-(+)-1-chloro-2,6-dimethyl-heptane V are novel optically active units for the synthesis of the side chain of ... | 05/21/1985 |
| 4511745 | Process for functionalizing alkanes Process for functionalizing saturated hydrocarbons selectively in the terminal position comprising: (a) reacting said saturated hydrocarbons of the formula: where: H represents a hydrogen atom, and R represents a saturated hydrocarbon radical, with a metal comple... | 04/16/1985 |
| 4489210 | Process for the halogenation of organic compounds The invention relates to a process for the halogenation of organic compounds in the liquid phase using gaseous halogenating agents, the gaseous halogenating agents being metered into the reaction vessel at such an entry velocity that a gas jet is formed i... | 12/18/1984 |
| 4487669 | Method for oxidation of an element in both compartments of an electrolytic cell A method of oxidizing an element in both compartments of an electrolytic cell is provided. The method comprises reducing O2 to H2 O2 in the cathodic compartment with a reducing agent such as a cobalt porphyrin, cobalt phth... | 12/11/1984 |
| 4385192 | Process for manufacturing DBCP A process for manufacturing 1,2-dibromo-3-chloropropane is disclosed. The process comprises the steps of reacting bromine and allyl chloride at a temperature of from 5° to 85° C. and maintaining the reaction mixture between 60° to 90° C. for a suffici... | 05/24/1983 |
| 4351972 | Process for making anhydrous alkyl iodides The invention relates to the production of anhydrous alkyl iodides. To this end, carboxylic acid alkyl esters of the formula R1 COOR2, in which R1 stands for hydrogen or an alkyl or aryl radical having from 1 to 8 carbon a... | 09/28/1982 |
| 4347391 | Process for preparing ethylene dichloride Method of producing ethylene dichloride characterized by reaction of ethylene and chlorine in a reaction zone containing a circulating medium and maintained below the vaporization point of the medium, and utilization of the heat from the reaction to vapor... | 08/31/1982 |
| 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 |
| 4268697 | Synthesis of long-chain alkanes having terminal functionality A process for preparing primary substituted n-alkane compounds, comprising contacting the olefin product of an olefin metathesis reaction having an alpha-olefin as the reactant with a bis-cyclopentadienyl zirconium hydrohalide and, after contacting the pr... | 05/19/1981 |
| 4120906 | 1-Halogenotricyclo [4.3.1.12,5 ] undecane and process for the preparation thereof 1-Halogenotricyclo [4.3.1.12,5 ] undecanes are prepared by reacting tricyclo [4.3.1.12,5 ] undecane with bromine or by reacting tricyclo [4.3.1.12,5 ] undecane-1-ol with thionyl halide. The compounds are useful intermediat... | 10/17/1978 |
| 4100212 | Process for chlorinating linear paraffins Liquid-phase chlorination of n-paraffins is improved as to yield on chlorine and as to restriction to mono-substitution by passing the paraffins up a reactor divided into stages by baffles and feeding chlorine in controlled amounts to each stage.... | 07/11/1978 |
| 4052471 | Process for chlorinating C8 to C30 linear hydrocarbons An improved process for chlorinating substantially linear, liquid C8 to C30 hydrocarbons by intimately mixing the hydrocarbons and water in a weight ratio of 0.09:1 to 10:1, feeding the mixture of hydrocarbon and water to a reactor, ... | 10/04/1977 |
| 4026953 | Solvents for NMR spectroscopy Organic solvents containing less than 0.2 atom percent of 13 C and which preferably are at least partially deuterated are produced from 13 C-depleted gaseous carbon compounds and are advantageously employed as solvents for 13 | 05/31/1977 |
| 4025568 | 4-Homoisotwistyl bromide 4-HOMOISOTWISTYL BROMIDE HAS BIOLOGICAL ACTIVITIES TO PLANTS. It is useful as an intermediate to produce 3-acetylamino-4-homoisotwistane which has an antiviral effect and a biological activity to plants. 4-homoisotwistyl bromide is obtained by reacting 4-... | 05/24/1977 |
