| Patents for C07C 7 - Purification, separation orstabilisation of hydrocarbons; Use of additives (13,802) |
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| 01/31/2002 | DE10038349C1 Distillation of vinylaromatic monomer, especially styrene, is carried out in presence of 4-tert.-butylcatechol and oxygen without adding aromatic nitro- or amino-compound |
| 01/31/2002 | CA2415708A1 Regeneration of hydrogen sulfide sorbents |
| 01/29/2002 | US6342649 Method for removing ethylbenzene from a para-xylene feed stream |
| 01/29/2002 | US6342648 Methods and compositions for inhibiting vinyl aromatic monomer polymerization |
| 01/29/2002 | US6342647 Inhibitors of polymerization of vinyl compounds |
| 01/24/2002 | WO2001040149A3 Inhibition of polymerization of unsaturated monomers |
| 01/24/2002 | US20020007587 Contact with a hydrophobic non-porous or nano-filtration membrane and the purified product stream is recovered as the permeate. |
| 01/23/2002 | EP1173399A1 Electrochemical process for olefin recovery using transition metal dithiolene complexes |
| 01/22/2002 | CA2203397C A method for inhibiting premature polymerization of vinyl aromatic monomers |
| 01/17/2002 | WO2002004529A2 Method of reducing formation of precipitates in solvent recovery system |
| 01/17/2002 | WO2002004391A1 Pressure swing adsorption process for separating para-xylene and ethylbenzene from mixed c8 aromatics |
| 01/17/2002 | US20020006971 Extractive distillation |
| 01/17/2002 | CA2413280A1 Pressure swing adsorption process for separating para-xylene and ethylbenzene from mixed c8 aromatics |
| 01/16/2002 | EP1171212A2 Solvent extraction process |
| 01/16/2002 | EP0873291B1 Process for manufacturing ethylbenzene or cumene |
| 01/16/2002 | CN1077870C Saturated hydrocarbon recovering and utilizing tech |
| 01/15/2002 | US6339182 Separation of olefins from paraffins using ionic liquid solutions |
| 01/10/2002 | WO2002002491A1 Method for producing squalene |
| 01/10/2002 | WO2002002490A2 Synthesis of high quality normal alpha olefins |
| 01/10/2002 | US20020004621 Selective hydrogenation process for removing C10 -C16 diolefins |
| 01/10/2002 | US20020004534 Process for the manufacture in pure form of 1-pentene or an alpha-olefin lower than 1-pentene |
| 01/10/2002 | DE10031994A1 Recovery of squalene, useful for producing squalene used as apolar oil body in cosmetics or pharmaceuticals, uses compressed gas for extraction from intermediate containing hydrocarbon from processing vegetable oil |
| 01/09/2002 | EP1169286A2 The use of metal dithiolene complexes in selective olefin recovery |
| 01/09/2002 | CN1077561C Process for separating diolefin from C5 fraction |
| 01/09/2002 | CN1077560C Recovery of styrene from pyrolysis gasoline by extractive distillation |
| 01/08/2002 | US6337429 Method for separating a C4-hydrocarbon mixture |
| 01/08/2002 | US6337426 Composition consisting of light olefin monomer optionally containing acetylenic compounds and/or saturated hydrocarbons and polymerization inhibiting amount of synergistic combination of phenylenediamine and nitroxide |
| 01/08/2002 | US6336334 Device for crystallization by isentropic expansion and its use |
| 01/03/2002 | US20020002317 Flexible preparation of propene and hexene |
| 01/03/2002 | US20020002315 Selective hydrogenation of dienes |
| 01/02/2002 | EP1167491A1 Process for the hydrogenation of hydrocarbon containing fractions |
| 01/02/2002 | EP1167328A1 Process for separating mixtures of hydrocarbon isomers in gas phase on molecular sieves |
| 01/02/2002 | EP1165473A1 Process for preparing 2,6-dialkylnaphtalene |
| 01/02/2002 | EP1165471A1 Process for the separation of para-xylene using an ether as desorbent |
| 01/02/2002 | EP1165470A1 Formation, processing, transportation and storage of hydrates |
| 01/01/2002 | US6334947 Catalyst comprising at least a hydrogenation metal component and a synthetic clay and a process of using |
| 12/27/2001 | WO2001098239A1 Process for the purification of olefins |
| 12/26/2001 | CN1328534A Stabilised compositions comprising olefins |
| 12/26/2001 | CN1076722C Method for inhibiting polymerization of ethylenically unsaturated monomers |
| 12/25/2001 | US6333445 Cryogenic separation process for the recovery of components from the products of a dehydrogenation reactor |
| 12/25/2001 | US6333442 Process for the preparation of an aliphatic alkylate with a high octane number from a C4 cracking fraction |
| 12/25/2001 | US6332982 Apparatus for regulating the flow rate of at least one fluid in simulated moving bed separation units |
| 12/20/2001 | WO2001096271A2 Method for producing acrolein and/or acrylic acid |
| 12/20/2001 | WO2001034726A3 Methods and apparatus for high propane recovery |
| 12/20/2001 | US20010052481 Inhibition of popcorn polymer growth |
| 12/19/2001 | CN1326913A Method for demethanizing in ethylene production |
| 12/18/2001 | CA2214073C Absorption process for rejection of reactor byproducts and recovery of monomers from waste gas streams in olefin polymerization processes |
| 12/18/2001 | CA2160039C Method for separating sulfone from a hydrocarbon stream having a small concentration of sulfone |
| 12/13/2001 | US20010050245 Distillation |
| 12/13/2001 | DE19944252A1 Verfahren zum Herstellen von hochreinem Inden und hochreines Inden A method for producing high purity indene and high-purity indene |
| 12/12/2001 | EP0880488B1 Process for conversion of ethylbenzene |
| 12/12/2001 | EP0842134B1 Treatments for inhibiting vinyl aromatic monomer polymerization |
| 12/11/2001 | US6329562 Treating the reaction mixture with a faujasite zeolite type in liquid phase, absorbing cycloalkenes having two double bonds present in solution by zeolite, separating zeolite, and obtaining cycloalkenes by desorption |
| 12/11/2001 | US6329561 Impurities removal |
| 12/11/2001 | CA2217895C Butadiene removal system for ethylene plants with front end hydrogenation systems |
| 12/06/2001 | WO2001040319A3 Inhibition of polymerization of unsaturated monomers |
| 12/06/2001 | US20010049460 Controlling the chemical process by using heat and material balance significantly improves the performance of chemical processes such as petrochemical processing and ethylene splitting |
| 12/05/2001 | EP1159065A1 Agglomerated zeolitic adsorbents, method for obtaining same and uses thereof |
| 12/05/2001 | EP0777837B1 A method for inhibiting hydrate formation |
| 12/04/2001 | CA2052008C Hydrocarbon oil compositions |
| 11/28/2001 | EP1157249A2 System and process for the recovery of propylene and ethylene from refinery offgases |
| 11/28/2001 | CN1324338A Methods and compositions for inhibiting polymerization of ethylenically unsaturated hydrocarbons |
| 11/28/2001 | CN1075483C Process and appts. for C4 and C5 olefine hydrocarbon fraction conversion into ether and propene |
| 11/21/2001 | EP1154974A1 Method for the continuous recovery of styrene from a mixture containing same |
| 11/21/2001 | EP1154845A1 Use of ethoxylated glyceride mixtures as emulsifiers for producing paraffin hydrocarbon emulsions |
| 11/21/2001 | CN1323287A Process for making aromatic aldehydes |
| 11/21/2001 | CN1323286A Process for making aromatic aldehydes using ionic liquids |
| 11/21/2001 | CN1322723A Method of extracting flavone and terpenes from gingko leaf with CO2 in subcritical state |
| 11/20/2001 | US6320083 Reacting alkyl aromatic compound with carbon monoxide in presence of acidic ionic liquid to form alkyl aromatic aldehyde |
| 11/15/2001 | WO2001085656A1 Method and device for treating a c4 fraction |
| 11/15/2001 | WO2001085655A2 Diene removal from an olefin feedstock |
| 11/15/2001 | WO2001085654A2 Removal of phosphorus-containing compounds from an olefin feedstock |
| 11/15/2001 | WO2001085653A1 Removal of phosphorus-containing impurities from an olefin feedstock |
| 11/15/2001 | DE10022467A1 Recovery of an alpha-olefin from a Fischer Tropsch mixture comprises etherification to remove tertiary olefins and extractive distillation using methanol with full recovery and recycle of the methanol |
| 11/15/2001 | DE10022466A1 Removal of organic impurities from crude alpha-olefin product, from a Fischer-Tropsch process, by extractive distillation using a wash agent containing N-methyl-2-pyrrolidone |
| 11/15/2001 | DE10022465A1 Processing a four carbon cut from the fractionation of crude oil, useful for the recovery of 1,4-butadiene, comprises extractive distillation, selective hydrogenation and distillation |
| 11/15/2001 | CA2408205A1 Diene removal from an olefin feedstock |
| 11/15/2001 | CA2408195A1 Removal of phosphorus-containing compounds from an olefin feedstock |
| 11/15/2001 | CA2408189A1 Removal of phosphorus-containing impurities from an olefin feedstock |
| 11/14/2001 | EP1153904A1 Process for the separation of 2,6-dimethylnaphthalene from mixtures containing it |
| 11/14/2001 | EP0996607B1 Method and device for obtaining isobutenes from conjugated hydrocarbons |
| 11/14/2001 | EP0813517B1 Hydrogenation of unsaturated cyclic compounds |
| 11/14/2001 | EP0800499B1 Paraxylene separation process comprising at least two high temperature crystallization stages |
| 11/14/2001 | CN1321544A Selective hydrogenation acetylene-removing multimetal catalyst |
| 11/14/2001 | CN1074756C Distillation procss for improving yield of pure products from crude anthracene |
| 11/13/2001 | US6316684 Filled superglassy membrane |
| 11/13/2001 | US6315968 Process for separating acid gases from gaseous mixtures utilizing composite membranes formed from salt-polymer blends |
| 11/08/2001 | US20010039298 Removable filter for slurry hydrocarbon synthesis process |
| 11/07/2001 | EP1151981A2 Process for the purification of 2,6-dimethylnaphthalene and its use in the production of 2,6-naphthalenedicarboxylic acid |
| 11/07/2001 | EP1151790A1 Catalyst for selective hydrogenation, process for preparation of the same, its use in selectiv hydrogenation |
| 11/07/2001 | EP1150936A1 Alkyne hydrogenation process |
| 11/07/2001 | EP1102734A4 Recovery of aromatic hydrocarbons using lubricating oil conditioned membranes |
| 11/07/2001 | EP1068166A4 Process and apparatus for the production and recovery of p-xylene |
| 11/07/2001 | EP1040090B1 Process for separating linear internal olefins from branched internal olefins |
| 11/07/2001 | EP0800498B1 Method for the separation of paraxylene involving at least one high temperature crystallization stage and at least one clay treatment located upstream of the adsorption area |
| 11/07/2001 | CN1074398C Combined catalytic rectification and absorption process of preparing alkyl arene through reaction of low-concentration olefine and arene |
| 11/01/2001 | WO2001081279A1 A method for preventing or retarding the formation of gas hydrates |
| 11/01/2001 | WO2001081278A1 Process for the production of gasoline stocks |
| 11/01/2001 | CA2407035A1 Process for the production of gasoline stocks |
| 10/31/2001 | EP1148923A1 Removable filter for slurry hydrocarbon synthesis process |