| Patents for C07C 7 - Purification, separation orstabilisation of hydrocarbons; Use of additives (13,802) |
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| 01/08/2004 | US20040004040 Processes using solid perm-selective membranes in multiple groups for simultaneous recovery of specified products from a fluid mixture |
| 01/07/2004 | EP1378559A1 Process for the recovery of ethylene and propylene |
| 01/07/2004 | EP1378558A1 Process for the recovery of an ethylene and propylene containing stream from a cracked gas resulting from hydrocarbon cracking |
| 01/07/2004 | EP1377651A1 Atomized polysulfide used in ethylene steam cracker |
| 01/07/2004 | CN1466486A Unsaturated hydrocarbon selective hydrogenation catalyst, its preparation process and use thereof |
| 01/06/2004 | US6673961 Reacting branched-enriched stream with aromatic hydrocarbon; alkylation catalyst; sulfonation; simulated moving-bed adsorptive separation to extract the branched-enriched stream; branched alkylbenzenesulfonate detergent |
| 01/06/2004 | US6673879 Destroying peroxy compounds that might be present |
| 01/06/2004 | US6673239 Introducing a hydrocarbon stream containing at least one heteroatom-containing compound and water to a contacting zone containing a water adsorbent and a heteroatom-containing compound adsorbent; stripping using an isoparaffin |
| 01/02/2004 | EP1375459A1 Separation of unsaturated hydrocarbons from a fluid mixture |
| 01/02/2004 | EP1373168A2 Method for side chain alkylation or alkenylation |
| 01/02/2004 | EP1372843A1 Process for selective hydrogenation of acetylene in an ethylene purification process |
| 01/02/2004 | EP1372807A2 Ionic liquids as selective additives for the separation of close-boiling or azeotropic mixtures |
| 01/02/2004 | EP0946470B1 A method for preventing or retarding the formation of gas hydrates |
| 01/01/2004 | US20040000513 Apparatus using solid perm-selective membranes in multiple groups for simultaneous recovery of specified products from a fluid mixture |
| 12/31/2003 | CN1132804C Process for refining biphenol used for electrolyte of Lithium-ion battery |
| 12/30/2003 | US6670518 Olefin recovery in a polyolefin production process |
| 12/30/2003 | CA2327751C Process for distillation of multicomponent fluid and production of an argon-enriched stream from a cryogenic air separation process |
| 12/25/2003 | WO2003106389A1 Eb/sm splitter heat recovery |
| 12/24/2003 | WO2003106906A1 Method for liquefying a stream enriched with hydrocarbons and the simultaneous recovery of a high-yield fraction enriched with c3+ |
| 12/24/2003 | WO2003037835A3 Method for eliminating polarizable impurities from hydrocarbons with ionic liquids |
| 12/24/2003 | DE10033961C2 Verfahren zur Abtrennung leichter Olefine von Paraffinen Process for the separation of light olefins from paraffins |
| 12/24/2003 | CN1462733A Method for preparing compound phenolhydrocarbon sodium |
| 12/23/2003 | US6667423 Decomposing a tert-alkyl ether to form a tert-olefin, an alcohol and residual ether, in presence of a polysiloxane catalyst grafted with alkyl, aryl or alkylaryl sulfonic acid, purification, oxidation and dehydrogenation of tert-olefin |
| 12/23/2003 | US6667347 Contacting a gas stream, comprising methane and carbon dioxide(CO2), with an aqueous stream so that CO2 in the gas stream is dissolved into aqueous stream, creating a CO2-depleted gas stream having an enriched methane; separating |
| 12/18/2003 | WO2003059483A3 Separation of dienes from olefins using ionic liquids |
| 12/18/2003 | WO2002096804A3 Processes for the purification of higher diamondoids and compositions comprising such diamondoids |
| 12/18/2003 | WO2002081416A9 Process for selective hydrogenation of alkynes and catalyst therefor |
| 12/18/2003 | US20030233017 Selective hydrogenation of acetylenes and dienes in a hydrocarbon stream |
| 12/18/2003 | US20030233013 Process for the purification of mixtures of toluenediisocyanate |
| 12/17/2003 | EP1371636A1 Process for the purification of mixtures of toluenediisocyanate |
| 12/17/2003 | EP1371634A1 Process for the purification of mixtures of toluenediisocyanate |
| 12/17/2003 | EP1102734B1 Recovery of aromatic hydrocarbons using lubricating oil conditioned membranes |
| 12/17/2003 | CN1131431C Method to monitoring and controlling chemical treatment of petroleum, petrochemical and process with on-line quartz crystal microbalance sensor |
| 12/17/2003 | CN1131188C Method for inhibiting polymerization in distillation process of ethenyl aromatic hydrocarbon |
| 12/16/2003 | US6664433 Process for the purification of aromatic hydrocarbons and process for the preparation of high-purity aromatic hydrocarbons |
| 12/16/2003 | US6664418 N-oxyl compounds dissolved in solution with (meth)acrylic acid or one of its esters to prevent polymerization during storage |
| 12/14/2003 | CA2431441A1 Process for the purification of mixtures of toluenediisocyanate |
| 12/10/2003 | EP1369167A1 Process for the preparation of a thin zeolitic membrane |
| 12/10/2003 | EP1369166A1 Zeolith membrane of small thickness, its preparation and its use in separation |
| 12/10/2003 | EP1368832A2 Diamondoid-containing materials in microelectronics |
| 12/10/2003 | EP1368297A2 Synthesis and use of dimethyl-1,5-naphthalenedicarboxylates and intermediates therefrom |
| 12/10/2003 | EP1368291A1 Humidification of hydrocarbon mixtures for use in polymer synthesis |
| 12/10/2003 | CN1461290A Method for removal of polar contaminants from aromatic feedstocks |
| 12/09/2003 | US6660899 Separation of hydrocarbon compounds via extractive distillation |
| 12/09/2003 | US6660181 Inhibition of polymerization of unsaturated monomers |
| 12/04/2003 | WO2003099961A2 Portable gas-to-liquids unit and method for capturing natural gas at remote locations |
| 12/04/2003 | US20030225306 Process and apparatus for preparing olefins |
| 12/04/2003 | US20030225169 Gas apparatus used for liquefaction, storage and shift conversion of natural gas, to motor fuels or lubricants |
| 12/03/2003 | EP1366661A1 Method and device for the generation of cyclopropene compounds |
| 12/03/2003 | EP1366005A1 Method for recovering crude 1,3-butadiene by extractive distillation from a c4 cut |
| 12/03/2003 | CN1129575C Hydrogenation of unsaturated cyclic compounds |
| 12/02/2003 | US6657090 Reacting a C4-hydrocarbon stream that contians isobutene with methanol over an acid catalyst at a pressure of 3-15 bar abs., a temperature of 55-75 degrees C., and a reflux ratio of <1 |
| 12/02/2003 | US6657022 Inhibiting catalyst coke formation in the manufacture of an olefin |
| 11/27/2003 | US20030220530 Process and apparatus for preparing olefins |
| 11/27/2003 | US20030220201 A gas apparatus for generating a sparge gas methylcyclopropene through an aqueous suspension, preventing ethylene response in plants, fruits, vegetables and flowers in large warehouses; nonexplosive, safe way |
| 11/26/2003 | EP1363867A1 Method for ethane recovery, using a refrigeration cycle with a mixture of at least two coolants, gases obtained by said method, and installation therefor |
| 11/26/2003 | EP1363866A1 Method and apparatus for the preparation of triptane and/or triptene |
| 11/26/2003 | CN2587490Y Adsorption chamber grille for dewaxing molecular sieve of alkyl benzene device |
| 11/26/2003 | CN1458915A Method for manufacturing olefins from lower alkanes by oxidative dehydrogenation |
| 11/26/2003 | CN1457913A Mild distilling and separating method for mixture |
| 11/26/2003 | CN1457636A Method and device for producing cyclopropenyl compound |
| 11/25/2003 | US6653514 Dephosphorization of unsaturated hydrocarbons using adsorber materials such as ion exchange resins, zeolites, alumina or activated carbon, then isomerizing in the presence of catalysts and hydroformylating to form alcohols |
| 11/25/2003 | US6653414 Adding to said monomer an effective amount of a mixture comprising at least one stable hindered nitroxyl compound and one quinone or hydroquinone inbibitor |
| 11/20/2003 | US20030216605 Beta-elemene, method to prepare the same and uses thereof |
| 11/19/2003 | EP1362838A2 A method for stabilizing vinyl aromatic monomers using selected polymerization inhibitors and polymers prepared therewith |
| 11/19/2003 | EP1362625A1 Process for carefully separating a substance mixture by distillation |
| 11/19/2003 | EP1362160A1 Composition and method for inhibition of formation of gas hydrates |
| 11/19/2003 | EP1228162B1 Methods and compositions for inhibiting vinyl aromatic monomer polymerization |
| 11/19/2003 | CN1456542A Method for stabilizing vinyl aromatic monomer by preferred polymerization inhibitor and polymer therefrom |
| 11/18/2003 | US6649043 Treating spent metal and metal oxide sorbents with an oxidizing atmosphere following by a reducing atmosphere |
| 11/14/2003 | CA2427418A1 Method and device for the generation of cyclopropene compounds |
| 11/13/2003 | WO2003093202A1 Continuous method for obtaining butenes from a c4 fraction |
| 11/11/2003 | US6646177 Method for separation of p-xylene |
| 11/06/2003 | US20030205452 When 7-aryl-quinone methides and 4-tert-butylcatechol are used in combination in a vinyl aromatic monomer to inhibit polymerization, they do not inhibit polymerization to the same extent as each would separately |
| 11/06/2003 | CA2423209A1 A method for stabilizing vinyl aromatic monomers using selected polymerization inhibitors and polymers prepared therewith |
| 11/05/2003 | EP1064340B1 Mitigating fouling and reducing viscosity |
| 11/05/2003 | CN1454193A Method for side chain alkylation or alkenylation |
| 11/05/2003 | CN1453336A Catalytic distillation method for selective hydrogenation of C4 hydrocarbon mixture |
| 11/04/2003 | US6642425 Reactive distillation process for the alkylation of aromatic hydrocarbons |
| 10/30/2003 | US20030204122 Recovery of tertiary butyl alcohol |
| 10/30/2003 | US20030204120 Selective hydrogenation process |
| 10/29/2003 | EP1357166A1 Process and apparatus for the production of olefins |
| 10/29/2003 | EP1357165A1 Process and apparatus for the production of olefins |
| 10/29/2003 | EP1113867B1 Fluid distributor-mixer-extractor and related method |
| 10/28/2003 | US6639026 Adding aminophenol compound and nitroxyl radical compound for polymerization inhibition of olefins and diolefins |
| 10/28/2003 | US6637239 Nitrogen rejection method and apparatus |
| 10/28/2003 | US6637237 Olefin plant refrigeration system |
| 10/23/2003 | WO2003087022A1 Olefin plant refrigeration system |
| 10/23/2003 | US20030199724 Distillation; low bottoms temperature separation; for production polyethylene/polypropylene |
| 10/23/2003 | US20030199723 Drying the stream of hydrocarbon containing water with an ionic liquid drying agent containing a trialkylammonium or triethanolammonium salt of sulphuric acid being in liquid or melted form at a drying temperature |
| 10/23/2003 | US20030199722 Acetaldehyde and C4+ olefins are removed from the ethylene and/or propylene containing stream by fractionation, the stream containing ethylene and/or propylene is then treated with an acid gas |
| 10/23/2003 | US20030199721 Low pressure separation of dimethyl ether from an olefin stream |
| 10/23/2003 | US20030199710 Functionalized higher diamondoids |
| 10/22/2003 | EP1354863A1 Continuous process for the removal of water from a hydrocarbon stream |
| 10/22/2003 | EP1353890A1 Obtaining anthracene and carbazole by melt-crystallization |
| 10/22/2003 | EP1353750A1 Stable free nitroxyl radicals as oxidation catalysts and process for oxidation |
| 10/22/2003 | EP1148923B1 Removable filter for slurry hydrocarbon synthesis process |
| 10/22/2003 | EP0976702B1 Method for inhibiting polymerization of a vinyl compound |
| 10/22/2003 | CN1450035A Styrene separation process |
| 10/22/2003 | CN1450034A Process for rectifying raw styrene |