| Patents for C07C 7 - Purification, separation orstabilisation of hydrocarbons; Use of additives (13,802) |
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| 01/12/1992 | CA2045161A1 Sulfonated polysulfone membranes for aromatics/saturates separation |
| 01/12/1992 | CA2044000A1 Polysulfone membranes for aromatics/saturates separation |
| 01/10/1992 | CA2020746A1 Blanking process for reaction mixture |
| 01/09/1992 | CA2046438A1 Synthetic crystalline aluminosilicate for the catalytic conversion of hydrocarbons in petrochemical processes |
| 01/08/1992 | EP0464277A1 Process for the separation by adsorption of 2,6- or 3,5-diethyltoluene from a mixture thereof with another diethyltoluene isomer |
| 01/02/1992 | EP0432224A4 Treatment of arsine removal catalysts |
| 12/28/1991 | CA2052982A1 Reverse osmosis process for recovery of c3-c6 aliphatic hydrocarbon from oil |
| 12/25/1991 | CN1057252A Prodn. method for pure naphthalene |
| 12/24/1991 | US5075006 Isocyanurate crosslinked polyurethane membranes and their use for the separation of aromatics from non-aromatics |
| 12/23/1991 | WO1992000261A1 Process for adsorbing sulfur species from propylene/propane using regenerable adsorbent |
| 12/17/1991 | US5073669 Method for aromatic hydrocarbon recovery |
| 12/17/1991 | US5073663 Increasing the level of 2-methyl-2-butene in isoamylene |
| 12/11/1991 | EP0460770A1 Process for the separation of components in an organic liquid medium and a semi-permeable composite membrane therefor |
| 12/11/1991 | CN1056826A Facilitated liquid membranes for olefin/paraffin gas separations and related process |
| 12/10/1991 | US5072066 Inhibiting popcorn polymer formation with esters of inorganic acids |
| 12/10/1991 | US5072065 Inhibiting popcorn polymer formation with alkyl halides |
| 12/10/1991 | US5072064 Divinyl compound |
| 12/04/1991 | EP0459627A1 Method for removal of dimethyl ether and methanol from C4 hydrocarbon streams |
| 12/03/1991 | US5069757 Separation of aromatics from alkanes |
| 12/03/1991 | US5069756 Separation of cyclohexane from cyclohexene by azeotropic or extractive distillation |
| 11/27/1991 | EP0458598A2 Facilitated liquid membranes for olefin/paraffin gas separations and related process |
| 11/27/1991 | EP0458309A2 Dicyclopentadiene activation method and polymerization composition |
| 11/26/1991 | US5068011 Separation of monoolefins from paraffins |
| 11/26/1991 | CA2040798A1 Facilitated liquid membranes for olefin/paraffin gas separations and related process |
| 11/22/1991 | EP0617729A4 Styrene polymerization inhibitor. |
| 11/22/1991 | CA2040584A1 Method for removal of dimethyl ether and methanol from c4 hydrocarbon streams |
| 11/12/1991 | US5064630 Zeolite l preparation |
| 11/06/1991 | EP0454892A1 Process for separating 1-tetradecene from triethylaluminum |
| 11/05/1991 | US5062866 Transition metal, hydrophilic group 1A salt |
| 11/05/1991 | US5062862 Process and apparatus for recovering a pure substance from a liquid mixture by crystallization |
| 10/30/1991 | EP0453669A1 Process and adsorbent for separating CO2 from a mixture thereof with a hydrocarbon |
| 10/23/1991 | CN1014402B Process for removing arsine from light olefin-containing hydrocarbon feedstocks |
| 10/22/1991 | US5059742 Process for separating 2,6-dimethylnaphthalene |
| 10/22/1991 | US5059741 C5/C6 isomerization process |
| 10/22/1991 | US5059732 Process for selective catalytic hydrogenation in liquid phase of a normally gaseous feed containing ethylene, acetylene and gasoline |
| 10/22/1991 | US5059578 Thermosetting phenolic resin of specific infrared absorption, polyvinyl alcohol or cellulose binder, molding heat treating |
| 10/22/1991 | US5059306 Process for removing pure aromatics |
| 10/17/1991 | WO1991015449A1 Removal of nitrogenous components of a hydrocarbon feedstream |
| 10/15/1991 | US5057644 Catalytic ethylation |
| 10/15/1991 | US5057643 Zeolitic para-xylene separation with tetralin derivatives as heavy desorbent |
| 10/15/1991 | US5057642 Removal of basic impurities from olefin streams |
| 10/15/1991 | US5057636 Process for recovering N-hexenes from a mixture of C6 olefin isomers by oligomerizing the branched-chain C6 olefin isomers in the mixture using a moderate strength acid catlyst |
| 10/08/1991 | US5055634 Adsorption and isomerization of normal and mono-methyl paraffins |
| 10/08/1991 | US5055633 Separating isopentane and dimethylhexanes by adsorption of impurities; octane rating |
| 10/08/1991 | US5055631 Sulfonated polysulfone membranes for aromatics/saturates separation |
| 10/08/1991 | US5055630 Mixing with water, transferring into centrifuge, separating liquid phase, drawing, circulating |
| 10/08/1991 | US5055162 Separating close boiling cycloalkaney/alkanes using a solvent mixture of an n-hydroxyalkyl-2-pyrrolidone and a saturated alc ohol |
| 10/08/1991 | CA1290354C Process for the selective hydrogenation of alkynes |
| 10/08/1991 | CA1290353C Process for isomerization of a hydrocarbon feed stream |
| 10/07/1991 | WO1991015444A1 Removal of organochlorides |
| 10/01/1991 | US5053209 Removal of mercury from natural gas and liquid hydrocarbons utilizing silver on alumina adsorbent |
| 09/25/1991 | EP0448439A1 Process for fractionation of a gaseous mixture comprising hydrogen, light aliphatic hydrocarbons and light aromatic hydrocarbons |
| 09/10/1991 | CA1288682C Process for lpg recovery |
| 09/04/1991 | EP0445041A1 Process for separating gas mixings from petroleum refineries |
| 09/03/1991 | US5045515 Ion exchanged clinoptilolites, separation of carbon dioxide and water from hydrocarbon streams |
| 09/03/1991 | US5045206 Selective multi-ring aromatics extraction using a porous, non-selective partition membrane barrier |
| 09/03/1991 | CA1288329C Method for partial condensation of hydrocarbon gas mixtures |
| 08/25/1991 | CA2036919A1 Gas absorption for separation of hydrocarbons |
| 08/20/1991 | US5041693 Separation of normal paraffins and the regeneration of zeolitic molecular sieves used therein |
| 08/13/1991 | US5039380 Separation of m-xylene from p-xylene or o-xylene by azeotropic distillation |
| 08/07/1991 | EP0439888A1 Cyclic adsorption/desorption purification |
| 08/07/1991 | EP0439816A1 Process for obtention of cyclohexene from mixtures containing cyclohexene, benzene and/or cyclohexane |
| 08/07/1991 | EP0439461A1 Matrix membrane |
| 08/01/1991 | DE4002764A1 Extracting cyclohexene from mixts. with benzene and/or cyclohexane |
| 07/31/1991 | EP0438812A1 Method for absorbing hydrogen sulfide with glyoxal |
| 07/30/1991 | US5035794 Removal of tert-butyl chloride by chemisorption onto alumina allows isoprene stream to be recycled |
| 07/26/1991 | CA2034895A1 Process for scavenging hydrogen sulfide using glyoxal |
| 07/23/1991 | US5034105 Electrodialysis, crystallization from a supersaturated solution, purification |
| 07/16/1991 | US5032232 Extractive distillation of hydrocarbon mixtures |
| 07/10/1991 | CN1052845A Process for synthesising benzyltoluene bibenzyltoluene of low chlorine content |
| 07/03/1991 | EP0435737A1 Process for the synthesis of benzyltoluene and dibenzyltoluene with low chlorine content |
| 07/03/1991 | EP0434959A2 Process for simultaneously obtaining purified benzene and purified toluene |
| 07/03/1991 | EP0434730A1 Process for removing impurities from an aromatic stream |
| 06/27/1991 | WO1991008999A1 Blendend gasolines and process for making same |
| 06/26/1991 | CN1012964B Process for jointly removing arsenic and carbon oxysulfuride from fraction of unsaturated hydrocarbon in liquid phase |
| 06/25/1991 | US5026952 Cooling, partial condensatio in fractionating column |
| 06/25/1991 | CA1285210C Low pressure process for c + liquids recovery from process product gas |
| 06/19/1991 | EP0433156A1 Process for preparation of zeolites 5A of great stability and applicable particularly in the separation of paraffins |
| 06/19/1991 | EP0432224A1 Treatment of arsine removal catalysts. |
| 06/19/1991 | CN1052323A Blended gasolines and process for making same |
| 06/18/1991 | US5025112 Purification of cumene recycle streams |
| 06/13/1991 | DE3940428A1 Removing thiophene from benzene - by adsorption on pentasil-type zeolite, pref. a ZSM-5 zeolite, followed by heating to recover thiophene |
| 06/12/1991 | EP0431990A1 Process for the production of alkylaromatic hydrocarbons from natural gas |
| 06/12/1991 | EP0431631A2 BF3 removal from BF3 catalyzed olefin oligomer |
| 06/12/1991 | EP0318504B1 Process for separating higher hydrocarbons from a gas mixture |
| 06/07/1991 | CA2019383A1 Blended gasolines and process for making same |
| 05/29/1991 | CA2030983A1 Process for the production of alkylaromatic hydrocarbons from natural gaz |
| 05/28/1991 | US5019669 Alkylation of organic aromatic compounds |
| 05/28/1991 | US5019668 Triglycerides, Ester Interchange, Vacuum Distillation |
| 05/28/1991 | US5019667 Process for purification of hydrocarbons |
| 05/28/1991 | US5019218 Vacuum distillation process |
| 05/28/1991 | US5019217 Separation of m-xylene from o-xylene by extractive distillation using esters |
| 05/28/1991 | US5019143 Low pressure noncryogenic processing for ethylene recovery |
| 05/22/1991 | CN1051554A Indenoindole compounds ii |
| 05/22/1991 | CN1051549A Adsorptive separation of para-xylene using tetralin desorbent |
| 05/21/1991 | US5017735 Selective sorption of 2,6-diisopropylnaphthalene |
| 05/15/1991 | EP0427338A1 Process for the separation of solvents from hydrocarbons dissolved in said solvents |
| 05/11/1991 | CA2029567A1 Process for the separation of solvents from hydrocarbons dissolved in said solvents |
| 05/08/1991 | EP0425740A1 Adsorptive separation of para-xylene |
| 05/08/1991 | CN1012573B Process for scrubbing gas to recover hydrocarbons |