| Patents for C07C 7 - Purification, separation orstabilisation of hydrocarbons; Use of additives (13,802) |
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| 06/20/2002 | US20020077517 Method and system for removing ethylbenzene and non-aromatics from a mixed xylene stream and optimizing para-xylene production and separation |
| 06/18/2002 | US6407305 Adsorptive separation process for recovery of two paraffin products |
| 06/18/2002 | US6407304 Solvent extraction, distillation |
| 06/18/2002 | US6407303 Isomerization process with adsorptive separation and integrated fractional distillation |
| 06/13/2002 | WO2002008161A3 Polymerization inhibitor for vinyl-containing materials |
| 06/13/2002 | WO2002004529A3 Method of reducing formation of precipitates in solvent recovery system |
| 06/12/2002 | CN1353679A Process for separating olefins from saturated hydrocarbons |
| 06/11/2002 | US6403851 Process for preparing cyclododecatrienes with recycling of the catalyst |
| 06/11/2002 | US6403850 Inhibition of polymerization of unsaturated monomers |
| 06/06/2002 | US20020068844 Process for the production of para-xylene using toluene feeds and pressure swing adsorption |
| 06/06/2002 | US20020068843 Selective hydrogenation catalyst for selectively hydrogenating of unsaturated olefin, process for preparing the same and its use |
| 06/06/2002 | US20020068841 Alkyl aromatic aldehydes |
| 06/05/2002 | EP0829010B1 Method to monitor and control processes with on-line quartz crystal microbalance sensors |
| 06/05/2002 | CN1351982A Low temperature and low pressure hydrofining process for production of high quality n-hexane |
| 06/04/2002 | US6399847 Method of purifying 1,3,5-triisopropylbenzene |
| 06/04/2002 | US6399846 From mixture of aromatic hydrocarbons |
| 05/30/2002 | US20020065447 Crystallizing dimethylnaphthalene isomers; separating into cake containing isomers and mother liquor; useful for forming polyesters |
| 05/30/2002 | US20020065446 Tower liquid distillation streams for recovery of ethane, ethylene, propane, propylene and heavier hydrocarbons |
| 05/30/2002 | US20020065444 Coupling xylene isomerization reactor with pressure and/or temperature swing absorption unit to separate feed of aromatic hydrocarbons |
| 05/30/2002 | US20020063240 Separation of olefins from paraffins using ionic liquid solutions |
| 05/29/2002 | EP1209139A1 Method for producing 2,6-dimethylnaphthalene |
| 05/29/2002 | CN1085646C Method for separating arene from hydrocarbons mixture by use of extraction and rectification |
| 05/28/2002 | US6395951 Adsorptive separation product recovery by fractional distillation |
| 05/28/2002 | US6395950 Pentane, hexane, 2-methylpentane, 3-methylpentane |
| 05/28/2002 | US6395942 Increasing the thermal stability of a vinyl aromatic polymerization inhibitor |
| 05/28/2002 | US6395141 Separation of components from aromatic hydrocarbon mixtures thereof by extractive distillation |
| 05/28/2002 | US6393867 Expansion using a turbine |
| 05/23/2002 | WO2002040434A1 Method and device for obtaining 1,3 pure butadiene from 1,3 raw butadiene by distillation |
| 05/23/2002 | WO2002040432A2 Adsorptive separation process for recovery of para-xylene |
| 05/23/2002 | US20020062056 Process for separating mixtures of hydrocarbon isomers in gas phase on molecular sieves |
| 05/23/2002 | DE10056841A1 Distillation purification of butadiene comprises using single partitioned column |
| 05/23/2002 | CA2428749A1 Adsorptive separation process for recovery of para-xylene |
| 05/22/2002 | EP1206426A1 Process for separating linear alpha olefins from a stream containing saturated hydrocarbons, internal olefins, branched olefins and linear alpha olefins |
| 05/22/2002 | EP1206425A1 Process for separating olefins from saturated compounds |
| 05/22/2002 | CN1349964A Method for preparing high purity raffinute II and methyl tert-butyl ether |
| 05/22/2002 | CN1349960A Method for separating highly branched alkane hydrocarbon using zeolite adsorbent in mixed structure |
| 05/22/2002 | CN1349733A Feeding system for cyclopropenyl compounds |
| 05/22/2002 | CN1085193C Process for concurrent selective hydrogenation of acetylene and 1,2-butadiene in hydrocarbon streams |
| 05/21/2002 | US6392115 Using a 3-alkyl-2-oxazolidinone solvent |
| 05/21/2002 | US6391823 Separation process |
| 05/21/2002 | CA2062158C Olefin purification process |
| 05/16/2002 | US20020058849 From the inert gas purge stream of the reactor loop in a vapor-phase process for making vinyl acetate |
| 05/16/2002 | US20020058592 Delivery system for cyclopropenes |
| 05/15/2002 | EP1205460A1 Process for distillation, in a column with a dividing wall, of saturated hydrocarbons obtained by isomerisation |
| 05/15/2002 | EP0993585A4 Process for liquefying a natural gas stream containing at least one freezable component |
| 05/15/2002 | CN1349482A Process for the purification of aromatic hydrocarbons and process for the prepn. of high-purity aromatic hydrocarbons |
| 05/15/2002 | CN1084719C Method for producing high purity isobutylene from C4 fraction containing isobutylene and butylene-1 |
| 05/14/2002 | US6388162 Diene removal from an olefin feedstock |
| 05/14/2002 | US6388159 Xylene isomerization process using UZM-5 and UZM-6 zeolites |
| 05/14/2002 | US6388157 Aromatic alkylation process using UZM-5 and UZM-6 aluminosilicates |
| 05/14/2002 | US6388156 Using toluene, benzene |
| 05/14/2002 | US6388150 Selective catalytic hydrogenation of impurities |
| 05/14/2002 | US6387934 2-Cyano-3,5-dihydroxyhex-2-enecarboxamide derivatives |
| 05/10/2002 | WO2002036489A1 Uzm-5, uzm-5p and uzm-6; crystalline aluminosilicate zeolites and processes using the same |
| 05/10/2002 | CA2427555A1 Uzm-5, uzm-5p and uzm-6; crystalline aluminosilicate zeolites and processes using the same |
| 05/09/2002 | US20020055665 Simultaneous periodic offsetting of injection positions and the draw-off position of the extract from a moving bed of adsorbent in the direction of flow of main flux that circulates; continuous and intermittent production |
| 05/08/2002 | EP0922020B1 Process for the production of alkylated benzenes |
| 05/02/2002 | WO2001096271A3 Method for producing acrolein and/or acrylic acid |
| 05/02/2002 | WO1999064381A9 Production of high purity meta-xylene |
| 05/02/2002 | EP1200378A1 Process for the separation of isobutene from normal butenes |
| 05/02/2002 | EP1200187A1 Method for producing catalysts by acid activation |
| 05/02/2002 | DE10102082A1 Verfahren zur Herstellung von hochreinem Raffinat II und Methyl-tert.-butylether A process for the production of high purity raffinate II and methyl tert-butyl ether |
| 05/01/2002 | CN1347394A Selective hydrogenation process and catalyst therefor |
| 05/01/2002 | CN1347339A Agglomerated zeolitic adsorbents, method for obtaining same and uses thereof |
| 05/01/2002 | CN1083823C Process for preparing paraxylene |
| 05/01/2002 | CN1083822C Process for conversion of ethylbenzene |
| 05/01/2002 | CN1083819C Method for separating aromatic hydrocarbon by extractive rectification |
| 05/01/2002 | CN1083818C 烃类分离 Hydrocarbon Separation |
| 05/01/2002 | CN1083735C Spherical or extrusion formed catalyst |
| 04/30/2002 | US6380452 Using a fluorinated polyethersulfone polymer |
| 04/25/2002 | WO2002033026A1 Blends of quinone alkide and nitroxyl compounds as polymerization inhibitors |
| 04/25/2002 | WO2002033025A2 C-nitrosoaniline compounds and their blends as polymerization inhibitors |
| 04/25/2002 | WO2002032840A1 Method and devices for producing naphthalene from coke produced from coke oven crude gas |
| 04/25/2002 | WO2002032838A2 Process for selective hydrogenation of an olefinic feed stream containing acetylenic and diolefinic impurities |
| 04/25/2002 | WO2001085655A3 Diene removal from an olefin feedstock |
| 04/25/2002 | DE10051349A1 Recovery of naphthalene from crude coke oven gas comprising direct cooling of the gas by means of water spray comprising use of an electrofilter |
| 04/25/2002 | CA2422655A1 Blends of quinone alkide and nitroxyl compounds as polymerization inhibitors |
| 04/24/2002 | EP1199296A1 Process for the preparation of highly pure raffinate II and methyl tert-butyl ether |
| 04/24/2002 | EP1198440A1 Method for purifying olefin-containing supply flows in polymerisation or alkylation processes |
| 04/24/2002 | CN1083283C Separation of substances from liquid mixture by crystallization |
| 04/23/2002 | US6376736 Distillation, adsorption, crystallization |
| 04/23/2002 | US6376735 Process to remove reaction by-products from a selective hydrogenation effluent stream |
| 04/23/2002 | US6376734 Isomeric mixture |
| 04/23/2002 | US6376733 Process for production of paraxylene |
| 04/23/2002 | US6376728 Method, composition and mixture for inhibiting monomer polymerization |
| 04/23/2002 | US6375802 For recovery of aromatic compounds from mixtures of aromatic and non-aromatic compounds |
| 04/23/2002 | CA2047393C Stabilized monomer compositions |
| 04/19/2002 | CA2359442A1 Process for preparing highly pure raffinate ii and methyl tert-butyl ether |
| 04/18/2002 | WO2002031089A1 Isomerisation process |
| 04/18/2002 | WO2002030857A1 Process for purifying an olefin containing stream and a process for preparing olefins |
| 04/18/2002 | US20020045793 Characterized in that said adsorbent has at least two types of channels defined by rings of oxygen atoms; improve octane number |
| 04/18/2002 | US20020045792 Method for separation of p-xylene |
| 04/18/2002 | US20020045789 Synthesis and isomerization of 1,2-bis (indenyl) ethanes |
| 04/18/2002 | US20020045786 Process for the selective preparation of DIB from an i-butene-containing C4 stream |
| 04/18/2002 | CA2425390A1 Isomerisation process |
| 04/17/2002 | EP1150936A4 Alkyne hydrogenation process |
| 04/17/2002 | EP1064340A4 Mitigating fouling and reducing viscosity |
| 04/17/2002 | CN1344703A Prepn of sulfurless benzene with pyrolytic light benzol |
| 04/16/2002 | US6372124 Removal of impurities from hydrocarbon streams |
| 04/11/2002 | WO2002029341A2 Hydrocarbon gas processing |