Patents
Sitemap › C07 - Organic chemistry › C07C - Acyclic or carbocyclic compounds › C07C 7 - Purification, separation orstabilisation of hydrocarbons; Use of additives
Patents for C07C 7 - Purification, separation orstabilisation of hydrocarbons; Use of additives (13,802)
12/2000
12/13/2000EP0920404B1 A zeolite-based ethylbenzene process adaptable to an aluminum chloride-based ethylbenzene plant
12/13/2000CN1059425C Process for alkylating aromatic compound
12/12/2000CA2180672C Process for adsorption of alumine-based adsorbant chelated organometallic compounds
12/06/2000CN1275926A Agglomerated zeolite adsorbents, method for obtaining them and use for adsorbing paraxylene
12/05/2000US6156950 Absorption, permeation; regeneration with isopentane, pentane, or isohexane gas
11/2000
11/29/2000CN1058958C Refining process of pyrethrin
11/28/2000US6153808 Chromatographic separation on a column for enantiomorphs
11/23/2000WO2000069796A1 Direct selective synthesis of para-xylene
11/23/2000CA2373649A1 Direct selective synthesis of para-xylene
11/22/2000CN1058782C Method for inhibiting hydrate formation
11/22/2000CN1058695C Hydrocarbon alkylation process
11/21/2000CA2184311C Method for removing sulfolane present in hydrocarbon
11/16/2000WO2000068171A1 Process for separating olefins from saturated hydrocarbons
11/16/2000CA2373438A1 Process for separating olefins from saturated hydrocarbons
11/15/2000CN1273136A Method for avoiding polymerization generation in film-type evaporator
11/14/2000US6147273 Method for the separation of compounds having olefinic unsaturation
11/14/2000US6147272 Circulating mixture of aromatic hydrocarbons in enrichment zone to produce fraction with para-xylene, purifying said fraction in purification zone by crystallization in zone comprising two stages at high temperature, recovering crystals
11/09/2000WO2000066521A1 Process for the purification of aromatic hydrocarbons and process for the preparation of high-purity aromatic hydrocarbons
11/09/2000WO2000006526A9 Recovery of aromatic hydrocarbons using lubricating oil conditioned membranes
11/08/2000CN1272838A Improved process for making surfactants via adsorptive separation and products thereof
11/07/2000US6143205 Mixtures containing monomers and stabilizers
11/07/2000US6141988 Separating olefins from gases containing olefins and hydrogen by removing hydrogen from the gases using a combination of membrane and pressure swing absorption
11/02/2000WO2000064846A1 Hydrocarbon hydrogenation catalyst and process
11/02/2000WO2000064555A2 Solvent extraction process
11/02/2000EP1047654A1 Method for producing 2,6-dmn from mixed dimethylnaphthalenes by crystallization, adsorption and isomerization
11/02/2000EP1047483A1 Separation process
11/02/2000DE19919932A1 Verfahren zum Gewinnen einer Reinmethanfraktion A method for obtaining a pure methane fraction
11/02/2000CA2370894A1 Solvent extraction process
10/2000
10/26/2000WO2000031214A3 Recovery of propylene and ethylene from offgases
10/25/2000EP1046416A2 Method for preventing polymerization in thin-film type evaporating device
10/25/2000EP1045820A1 Ethylene plant refrigeration system
10/25/2000EP0915815B1 Method of removing hydrogen sulfide, ammonia, phosphine and arsine from acetylene
10/24/2000US6137024 Process for separating meta-xylene
10/24/2000US6137023 Process for the production of high purity isobutene combining reactive distillation with hydroisomerisation and skeletal isomerisation
10/24/2000US6136155 Separation of mesitylene from 1,2,4-trimetyhlbenzene by azeotropic distillation
10/24/2000CA2152411C Production of a high purity ether product
10/19/2000WO2000061701A1 Antigelling agent for hydrocarbon mixture containing conjugated diene and method of preventing clogging of apparatus for separating and purifying the mixture
10/19/2000WO2000061529A1 Process for preparing 2,6-dialkylnaphtalene
10/19/2000WO2000061528A1 Electrochemical process for olefin recovery using transition metal dithiolene complexes
10/19/2000WO2000061527A2 The use of metal dithiolene complexes in selective olefin recovery
10/19/2000CA2369046A1 The use of metal dithiolene complexes in selective olefin recovery
10/19/2000CA2368607A1 Process for preparing 2,6-dialkylnaphtalene
10/19/2000CA2367380A1 Electrochemical process for olefin recovery using transition metal dithiolene complexes
10/18/2000EP1044182A1 Preparation of ethylene by gas permeation
10/18/2000CN1270155A Process for removing indole from beta-methyl naphthalene
10/17/2000US6133497 Acid-activated clay mineral contains at least 5 milli-equivalents/100 g of exchangeable al3+ cations.
10/12/2000WO2000059957A1 Method for isolating olefins from polyolefin plants
10/11/2000CN1269354A Process for recrystalizing 1,3-diamino-phenoxy benzene
10/11/2000CN1269342A Catalytic alkylating separation process of mixed C9 arene to prepare high-purity s-trimethylbenzene
10/05/2000WO2000058244A1 Process for the separation of para-xylene using an ether as desorbent
10/05/2000DE19915106A1 Isolating olefin for recycling in gas-phase olefin polymerization processes involves separating olefin from inert gas in a separator unit and removing catalyst poison in apparatus connected to the separator
10/05/2000CA2368452A1 Process for the separation of para-xylene using an ether as desorbent
10/04/2000EP1040176A1 Process for recovering olefins
10/04/2000EP1040090A1 Process for separating linear internal olefins from branched internal olefins
10/03/2000CA2189288C Method for removal of heavy metal alkoxide compounds from liquid hydrocarbon
09/2000
09/28/2000WO2000056684A1 Formation, processing, transportation and storage of hydrates
09/28/2000CA2368020A1 Formation, processing, transportation and storage of hydrates
09/27/2000CN1056823C Method for separation of cracking C5 fraction by pre-removal process of alkyne
09/26/2000US6124517 Olefin purification by adsorption of acetylenics and regeneration of adsorbent
09/26/2000US6124514 Process for generating pure benzene from reformed gasoline
09/26/2000US6124410 Contacting an alpha-olefin with an alkali metal carried on a support of a metal oxide and a molded material of potassium carbonate and carbon, purifying the alpha-olefin, polymerizing in presence of metallocene catalyst system
09/26/2000US6123836 Process for the removal of acid compounds from a hydrocarbon stream
09/26/2000CA2178364C Maleimide copolymers and method for inhibiting hydrate formation
09/21/2000DE19911910A1 Removing oxygenates from a charge containing hydrocarbons and oxygenates uses liquid/liquid extraction with a solvent as extracting agent or azeotropic distillation with the solvent as entrainer
09/20/2000EP1036053A1 Method for purifying norbornene by distillation
09/20/2000EP0998437A4 Methods for inhibiting the polymerization of vinyl monomers
09/20/2000EP0922018B1 Method for producing high purity isobutylene from a butane plus fraction containing isobutylene and butylene-1
09/20/2000EP0810984B1 Method for separating para-xylene by preprocessing using selective hydrogenation and activated earth
09/20/2000CN1266835A Process for fractionation of dibutene
09/19/2000US6121501 Process for preparing 2,6-dialkylnaphthalene
09/19/2000US6121316 2-cyano-3,5-dihydroxyhex-2-enecarboxamide derivatives
09/19/2000US6120692 Use of metal dithiolene complexes in selective olefin recovery (law760)
09/19/2000US6120595 Method of producing activated clay for treating aromatic hydrocarbons
09/13/2000EP1035094A1 Integrated deethanizer/ethylene fractionation column
09/13/2000EP1034172A1 Method for removal of oxygenate impuritites from organic chemical streams
09/13/2000CN1056361C Method for producing para-xylene by high-temp. crystallisation in at least one stage and partial crystal fusion
09/12/2000US6118037 Process for the removal of contaminant compounds containing one or more heteroatoms of sulfur, nitrogen and/or oxygen from hydrocarbon streams
09/12/2000US6117276 Inhibiting polymerization of vinyl aromatic monomers
09/07/2000DE10009059A1 Use of molecular sieve carbon for separating nitrogen from methane e.g. for purifying natural gas or biogas
09/06/2000EP1033358A1 Control of diarylalkane by-product formation in alkylation of aromatics by olefins using zeolite beta catalyst
09/06/2000EP1032798A1 Method and installation for separating off c 2?- or c 2?+ hydrocarbons
09/06/2000CN1265388A Control of formation of diaryl alkane by-product in alkylation of olefines and aromatic compound by zeolite beta catalyst
09/05/2000US6114593 Method for reducing organic fluoride levels in hydrocarbons
09/05/2000US6114592 Selective aromatics disproportionation process
09/05/2000US6114399 Solvent extraction with a compressed hydrocarbon solvent
08/2000
08/31/2000WO2000050472A1 Method of dehalogenating hydrocarbon containing carbon-carbon double bond
08/31/2000WO2000050367A1 Method for the continuous recovery of styrene from a mixture containing same
08/31/2000WO2000050166A1 Agglomerated zeolitic adsorbents, method for obtaining same and uses thereof
08/31/2000DE19908463A1 Verfahren zur kontinuierlichen Gewinnung von Styrol aus einem styrolhaltigen Gemisch A process for the continuous production of styrene from a styrene-containing mixture
08/31/2000DE19906518A1 Verfahren zur Fraktionierung von Dibuten A method for fractionating dibutene
08/31/2000CA2364265A1 Continuous recovery of styrene from a styrene-containing mixture
08/30/2000CN1265086A Process for separating linear alpha olefins from 2-branched and/or 3-branched alpha olefins
08/29/2000US6111161 Process for production of paraxylene comprising a high-temperature crystallization with at least one stage and a partial melting of the crystals
08/24/2000WO2000048970A1 Alkyne hydrogenation process
08/24/2000CA2371774A1 Alkyne hydrogenation process
08/23/2000EP1029839A1 Process for fractionating dibutene
08/23/2000CN1264355A Apparatus and method for catalytic distillations
08/23/2000CN1055675C Process for regenerating heat conducting oil hydrogenated terphenyl
08/22/2000US6107535 Process for removing nitrogenated and sulfurated contaminants from hydrocarbon streams
08/22/2000US6106702 Regeneration of a molecular sieve used as a guard bed in this chemical separation process.
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