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| Number | Title | Issue Date |
| 7683230 | Methyl bromide to olefins The specification discloses a process for the production of olefins including ethylene, propylene and butenes from methyl bromide. In a chemical reaction methyl bromide is dehydrobrominated to the olefin and hydrogen bromide. The reaction is carried out at elevated ... | 03/23/2010 |
| 7307196 | Molecular sieve compositions, catalyst thereof, their making and use in conversion processes The invention relates to a catalyst composition, a method of making the same and its use in the conversion of a feedstock, preferably an oxygenated feedstock, into one or more olefin(s), preferably ethylene and/or propylene The catalyst composition comprises a molec... | 12/11/2007 |
| 7230150 | Zone reactor In a method of converting alkanes to their corresponding alcohols, ethers, olefins, and other hydrocarbons, a vessel comprises a hollow, unsegregated interior defined first, second, and third zones. In a first embodiment of the invention oxygen reacts with metal hal... | 06/12/2007 |
| 7098371 | Method of hydrodechlorinating nuclear-chlorinated ortho-xylenes Method of hydrodechlorinating nuclear-chlorinated o-xylenes and recovering o-xylene, forming hydrogen chloride, the nuclear-chlorinated o-xylenes being hydrogenated in the gas phase at a noble-metal-containing catalyst at a temperature in the range from 220 to 360°... | 08/29/2006 |
| 7091391 | Methane to olefins The specification discloses a process for the production of olefins, including ethylene, propylene and butenes, from methane, the process comprising first, second and third reaction steps operated in tandem. In the first reaction step, hydrogen chloride, perchloroet... | 08/15/2006 |
| 7009086 | Use of molecular sieves for the conversion of oxygenates to olefins This invention relates to a process for converting an oxygenate feedstock to light olefins using a crystalline metalloaluminophosphate molecular sieve having a high metal content and a small particle size. It also relates to crystalline metalloaluminophosphate molec... | 03/07/2006 |
| 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 |
| 6930216 | Method for the nuclear chlorination of ortho-xylene A method for the nuclear chlorination of ortho-xylene using a chlorinating agent in the presence of at least one Friedel-Crafts catalyst and chloro-substituted 2,8-dimethylphenoxathiin as co-catalyst. The co-catalyst used is preferably tetrachlorinated 2,8-dimethylp... | 08/16/2005 |
| 6919164 | Patterning compositions using E-beam lithography and structures and devices made thereby A method of patterning a layer of e-beam sensitive dielectric material, such as bisbenzocyclobutene monomers, using electron beam lithography. ... | 07/19/2005 |
| 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 |
| 6906232 | Molecular sieve compositions, catalysts thereof, their making and use in conversion processes The invention relates to a conversion process of a feedstock, preferably an oxygenated feedstock, into one or more olefin(s), preferably ethylene and/or propylene, in the presence of a molecular sieve catalyst composition that includes a molecular sieve and a Group ... | 06/14/2005 |
| 6649044 | Process for the reductive dehalogenation of halogenated hydrocarbons The present invention relates to a process for the reductive dehalogenation of halogenated hydrocarbons. It comprises reacting halogenated hydrocarbons with a reducing metal and a hydrogen donating compound in the presence of an amine. Preferably, the hal... | 11/18/2003 |
| 6452060 | Method to prepare cyclopropenes The present invention relates to a method to prepare cyclopropenes.... | 09/17/2002 |
| 6284852 | Acid activation of ruthenium metathesis catalysts and living ROMP metathesis polymerization in water Activation of ruthenium based catalyst compounds with acid to improve reaction rates and yields of olefin metathesis reactions, including ROMP, RCM, ADMET and cross-metathesis reactions is disclosed. The ruthenium catalyst compounds are ruthenium carbene ... | 09/04/2001 |
| 6187983 | Converting oxygenates to olefins in the presence of electromagnetic energy A process comprises contacting an oxygenate feed with a molecular sieve catalyst in the presence of an electromagnetic energy and converting the oxygenate feed to olefins.... | 02/13/2001 |
| 6166282 | Fast-fluidized bed reactor for MTO process An oxygenate conversion process and fast-fluidized bed reactor are disclosed having an upper disengaging zone and a lower reaction zone. The process is carried out in a reaction zone having a dense phase zone in the lower reaction zone and a transition zo... | 12/26/2000 |
| 6143939 | Method of dehalogenation using diamonds A method for preparing olefins and halogenated olefins is provided comprising contacting halogenated compounds with diamonds for a sufficient time and at a sufficient temperature to convert the halogenated compounds to olefins and halogenated olefins via ... | 11/07/2000 |
| 6072096 | Process for the preparation of a catalyst and its use for the conversion of chloroalkanes into alkenes containing less chlorine Process for the preparation of a catalyst including a metal of group VIII and a metal of group Ib, according to which the mixture including the alkoxide precursor of an inorganic oxide and complexes including the metals of group VIII and Ib and difunction... | 06/06/2000 |
| 6028237 | Synthesis of cyclopropylacetylene The present invention relates generally to novel methods for the synthesis of cyclopropylacetylene which is a reagent in the asymmetric synthesis of (S)-6-chloro-4-cyclopropylethynyl-4-trifluoromethyl-1,4-dihydro-2H-3,1-ben zoxazin-2-one which is a useful ... | 02/22/2000 |
| 5962366 | Treatment to improve the durability and selectivity of a hydrodechlorination catalyst and catalyst The durability and selectivity of a supported nobel metal hydrodeclorination catalyst can be improved by treating the supported catalyst, which comprises support and catalytic noble metal, with a late transition metal halide salt, a post transition metal ... | 10/05/1999 |
| 5821394 | Process for converting a chlorinated alkane into a less chlorinated alkene Process for converting a chlorinated alkane into at least one less chlorinated alkene by reaction with hydrogen in the presence of a catalyst comprising palladium and a metal selected from the group consisting of silver, gallium, indium, thallium, germani... | 10/13/1998 |
| 5773549 | Process for hydrotreating an organic feedstock containing a halogenated component and contaminated with distillable oxygen and nitrogen compounds having boiling points lower than the halogenated compounds The invention provides a process for hydrotreating an organic feedstock containing a halogenated component and contaminated with distillable oxygen compounds, and/or distillable nitrogen compounds having boiling points lower than the halogenated compounds... | 06/30/1998 |
| 5723714 | Process for the preparation of methylenecyclopropane A novel process for the production of methylenecyclopropane from 3-halogen-2-methyl-1-propene (ଲ-methallyl halogenide) by reacting ଲ-methyallyl halogenides with an alkali metal-bis-(trialkylsilyl)-amide, optionally in the presence of an alkali... | 03/03/1998 |
| 5721189 | Treatment to improve the durability of a hydrodechlorination catalyst and catalyst The durability of a supported noble metal hydrodechlorination catalyst can be improved by (1) treating the supported catalyst, which comprises support and catalytic noble metal, with a non-elemental halide compound, which is not a mineral acid (such as an... | 02/24/1998 |
| 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 |
| 5693191 | Process for recovery of anhydrous hydrogen chloride from mixtures with non-condensable gases A process is provided for the recovery of hydrogen chloride in anhydrous form from a dry (containing less than about 500 parts per million by weight of water) mixture of hydrogen chloride with one or more non-condensable gases and which may also contain c... | 12/02/1997 |
| 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 |
| 5625110 | Hydrodehalogenation catalyst A new hydrodehalogenation catalyst, as well as to its use for the hydrodechlorination of chlorinated hydrocarbons. The hydrodehalogenation catalyst, which converts halogenated hydrocarbons completely under mild conditions, has a considerably longer lifeti... | 04/29/1997 |
| 5545388 | Methods for the synthesis of chemical compounds Methods for synthesis of chemical compounds by catalytic transfer hydrogenation comprise forming a mixture of a starting material, a hydrogen donor material and a catalyst. The catalyst is selected from a catalytic form of carbon, a polyethylene glycol ph... | 08/13/1996 |
| 5491250 | Process for purifying vinylically unsaturated compounds prepared using a palladium-complex catalyst A crude vinylically unsaturated product formed from a palladium-complex-catalyzed reaction of a reactant halide selected from the group consisting of aryl, allyl, vinyl, and benzyl halides, and a reactant olefin having a vinylic hydrogen, wherein the reac... | 02/13/1996 |
| 5478548 | Methods for the synthesis of chemical compounds Methods for synthesis of chemical compounds by catalytic transfer hydrogenation comprise forming a mixture of a starting material, a hydrogen donor material and a catalyst. The catalyst is selected from a catalytic form of carbon, a polyethylene glycol ph... | 12/26/1995 |
| 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 |
| 5430215 | Selective hydrodechlorination of 1,2,3-trichloropropane to produce propylene A process for hydrodechlorinating 1,2,3-trichloropropane to produce propylene in preference to propane, comprising reacting 1,2,3-trichloropropane and hydrogen in the presence of a Group VIII metal on carbon catalyst, and especially a platinum on carbon c... | 07/04/1995 |
| 5430214 | Hydrodehalogenation process and catalyst for use therein A hydrodehalogenation process, comprising the step of reacting a saturated halohydrocarbon (e.g., 1,2-dichloropropane) with hydrogen or a hydrogen donor in the gas phase in the presence of a catalytically effective amount of ruthenium on a support, and at... | 07/04/1995 |
| 5401894 | Process for the treatment of halogenated organic feedstocks A process for the conversion of a halogenated organic feedstock to produce a stream of hydrocarbonaceous compounds having an exceedingly low concentration of halogenated organic compounds and an aqueous stream containing hydrogen halide.... | 03/28/1995 |
| 5396002 | Process to produce vinylidene chloride using phase transfer catalyst The invention concerns a process for producing unsaturated compounds from chlorinated alkanes by dehydrochlorination wherein a phase transfer catalyst is used during reaction of chlorinated alkane with aqueous base. After dehydrochlorination, the products... | 03/07/1995 |
| 5396006 | Preparation of alkenes and of cyclopentane and cyclohexane Preparation of alkenes as well as of cyclopentane and cyclohexane from the corresponding vicinal dichloro and dibromo alkanes and from ,ω-Dichloropentane and ,ω-dibromopentane and ,ω-dichlorohexane and ,ω-dibromohexane ... | 03/07/1995 |
| 5276240 | Catalytic hydrodehalogenation of polyhalogenated hydrocarbons A novel catalytic process involving complete hydrodehalogenation of halogenated aliphatic hydrocarbons in the presence of a hydrogen donor and a modified zeolite catalyst has been developed. The process is operated in a continuous flow mode and reaction p... | 01/04/1994 |
| 5264646 | Process for preparing vinylically-unsaturated compounds A process for preparing a vinylically-unsaturated product compound comprises reacting a halogenated organic compound with a hydrolytically-stable, vinylically-unsaturated precursor compound in the presence of (a) a homogeneous zerovalent palladium catalys... | 11/23/1993 |
