| Patents for C07C 7 - Purification, separation orstabilisation of hydrocarbons; Use of additives (13,802) |
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| 02/07/1989 | US4803238 Polymer composition |
| 02/07/1989 | US4802987 Selective permeation of aromatic hydrocarbons through polyethylene glycol impregnated regenerated cellulose or cellulose acetate membranes |
| 02/07/1989 | CA1249769A1 Separating hydrocarbon gases |
| 02/07/1989 | CA1249710A1 Process for separating co.sub.2 and h.sub.2s from hydrocarbons |
| 02/01/1989 | EP0301341A1 Process for the separation of pure aromatics |
| 01/24/1989 | CA1249304A1 Tertiary-butylstyrene recovery |
| 01/24/1989 | CA1249215A1 Recovery of c in3 xxhydrocarbons |
| 01/18/1989 | EP0299157A2 Method for partial condensation of hydrocarbon gas mixtures |
| 01/17/1989 | US4798915 Process for the extraction of paraffins from mixtures thereof with alkane-sulfonic acids |
| 01/17/1989 | CA1248974A1 Process for the preparation of pure alkyl tert.-alkyl ethers and hydrocarbon raffinates which are largely free from isoolefins and from alkanols |
| 01/10/1989 | US4797199 Removing hydrofluoric acid from propane in alkylation process |
| 01/10/1989 | US4797140 Carbocyclic hydrocarbons as a scrubbing medium |
| 01/10/1989 | US4797133 Etherification, formation of tert-butyl methyl ether as antiknock agent |
| 01/10/1989 | CA1248462A1 Method and arrangement for the selective removal of acid gases from a feed gas |
| 01/03/1989 | CA1248007A1 Process for recovering c.sub.4 hydrocarbons using a dephlegmator |
| 12/28/1988 | CN88103497A Stabilized vinyl aromatic composition |
| 12/28/1988 | CA1247657A Process for removing carbonyl-sulfide from liquid hydrocarbon feedstocks |
| 12/27/1988 | US4793841 Process and apparatus for fractionation of a gaseous mixture employing side stream withdrawal, separation and recycle |
| 12/14/1988 | EP0294965A2 Stabilized vinyl aromatic composition |
| 12/13/1988 | US4791235 Adsorption on zeolite type y containing alkali metal or zinc, desorption, crystallization |
| 11/29/1988 | CA1245546A1 Separation of hydrocarbon mixtures |
| 11/22/1988 | CA1245234A1 Product recovery method for an aromatic hydrocarbon alkylation process |
| 11/17/1988 | WO1988008833A1 Cryogenic method for simultaneous selective desulphuration and stripping of a gas mixture consisting mainly of methane and containing also h2s and c2-hydrocarbons and more |
| 11/17/1988 | EP0291401A1 Cryogenic process for the simultaneous selective desulfurization and degasolination of a gaseous mixture principally consisting of methane and also H2S and C2+ hydrocarbons |
| 11/17/1988 | EP0290656A1 Process for the separation of hydrocarbons from a mixed feedstock |
| 11/15/1988 | US4784672 Flow of hot regeneration gases over adsorbent for desorption |
| 11/09/1988 | CN88100630A Process for prepering p-xylene of purity at seast 99.5% |
| 11/02/1988 | EP0288912A1 Process for recovery and purification of ethylene |
| 11/01/1988 | CA1244058A1 Guard bed catalyst for organic chloride removal from hydrocarbon feeds |
| 11/01/1988 | CA1244057A1 Compounding oil for polymers |
| 10/26/1988 | EP0288362A1 Process for the isomerization of butene-1 into butenes-2 in a C4 hydrocarbon cut containing butadiene and sulphur compounds |
| 10/26/1988 | EP0288293A2 Improved zeolite ZK-5 |
| 10/25/1988 | US4780114 Molten salt hydrate membranes for the separation of gases |
| 10/18/1988 | US4778946 Process for separating ethylbenzene from feedstream containing metaxylene using a zeolite adsorbent |
| 10/18/1988 | US4778945 Process for removing paraffins from their mixtures with paraffinsulphonic acids |
| 10/11/1988 | US4777322 Obtaining but-2-enes from C4 -hydrocarbon mixtures which contain but-1-ene and may or may not contain but-2-enes |
| 10/11/1988 | US4777309 Liquid phase; polymerization inhibitor |
| 10/11/1988 | US4776927 Extractive distillation using n-substituted morpholine |
| 10/05/1988 | EP0284971A2 Process for the production of 1,3-butadien |
| 10/05/1988 | EP0216009B1 Process for recovering 2,6-dialkyl isomers of naphthalene from their mixtures of isomers |
| 10/04/1988 | US4775519 Contacting with countercurrent stream of aqueous n-methyldiethanolamine and imidazole |
| 10/04/1988 | US4775395 Contacting with liquid phase comprising water and solvent, removing water free of solvent |
| 10/04/1988 | CA1242684A1 Solid adsorbent for unsaturated hydrocarbon and process for separation of unsaturated hydrocarbon from gas mixture |
| 09/27/1988 | US4774374 Stabilized vinyl aromatic composition |
| 09/27/1988 | US4774365 Etherification, deetherification, distillation azeotropic mixture |
| 09/27/1988 | US4774067 Absorption on metal oxides, regeneration |
| 09/27/1988 | US4773968 N-butane/isobutane fractionation |
| 09/27/1988 | CA1242383A1 Split-column extractive distillation |
| 09/22/1988 | WO1988007032A1 PROCESS FOR PREPARING alpha-(3-BENZYLPHENYL)PROPIONIC ACID DERIVATIVE |
| 09/21/1988 | EP0283315A1 Method for recovery of polymerization inhibitor |
| 09/20/1988 | US4772758 Process for the production of technically pure, chlorine-free cyclohexadecadiene |
| 09/20/1988 | US4772301 Process for the separation of C5+ hydrocarbons from a gaseous stream |
| 09/20/1988 | US4772295 Method for recovering hydrocarbon vapor |
| 09/14/1988 | EP0282053A2 Molecular sieving carbon, process for its production and its use |
| 09/13/1988 | US4771030 Process for preparing particulate aluminum metal for adsorbing mercury from natural gas |
| 09/13/1988 | US4770676 Recovery of methane from land fill gas |
| 09/07/1988 | EP0281208A1 Process for two-stage catalytic conversion of an olefins-containing feed |
| 09/07/1988 | CN88100540A Method of recovering propane and heavy hydrocarbon from hydrocarbon gas |
| 09/06/1988 | US4769499 Xylenol/3,5-/ |
| 09/06/1988 | US4769047 Process for the production of ethylene oxide |
| 09/06/1988 | US4768963 For use with a metal wall |
| 08/30/1988 | US4767428 Nitrogen removal system |
| 08/24/1988 | EP0279116A2 Desulphurisation |
| 08/23/1988 | US4765969 Reacting with ammonium hydroxide to form ammonium sulfide, heating to form hydrogen sulfide and sulfur, recycling hydrogen sulfide |
| 08/18/1988 | DE3703646A1 Verfahren zur gewinnung von p-xylol mit einer reinheit von mindestens 99,5 % A process for recovering p-xylene having a purity of at least 99.5% |
| 08/11/1988 | WO1988005766A1 PROCESS FOR PRODUCING p-XYLOL WITH A PURITY OF AT LEAST 99.5 % |
| 08/09/1988 | US4762956 Diene and acetylene impurities in olefin feed |
| 08/02/1988 | US4761167 Hydrocarbon recovery from fuel gas |
| 08/02/1988 | CA1239942A1 Extractive separation process |
| 08/02/1988 | CA1239879A1 Continuous sorption process |
| 08/02/1988 | CA1239770A1 Process of removing hydrogen sulfide from gas mixtures |
| 07/27/1988 | EP0276176A1 Process for the simultaneous exchange of heat and material through a porous barrier |
| 07/27/1988 | EP0275930A2 Upgrading diene-containing hydrocarbons |
| 07/27/1988 | EP0275855A1 Process for the purification of benzene |
| 07/27/1988 | EP0134243B1 Apparatus and method for recovering light hydrocarbons from hydrogen containing gases |
| 07/26/1988 | US4759786 Separation of gaseous mixtures |
| 07/26/1988 | CA1239653A1 Refining of tertiary butylstyrene |
| 07/20/1988 | EP0275208A2 Process for removing methanol from alkylation unit feed stream |
| 07/19/1988 | US4758371 Process and composition for removal of mercaptans from gas streams |
| 07/14/1988 | WO1988005034A1 Removal of polynuclear aromatics from hydrocarbon mixtures |
| 07/13/1988 | EP0274432A1 Process for the removal of polynuclear aromatic compounds from hydrocarbon streams |
| 07/06/1988 | EP0273900A1 Improved process for the selective hydrogenation of acetylenes |
| 07/06/1988 | EP0273509A1 Process- and apparatus for recovering a pure substance from a liquid mixture by crystallization |
| 07/06/1988 | EP0273091A1 Process for isomerizing xylene |
| 07/05/1988 | US4755627 Process for the synthesis and purification of diisopropenylbenzene |
| 06/29/1988 | EP0272391A2 Process for separation of hydrocarbon gases |
| 06/28/1988 | US4754090 Process for the preparation of hexamethyl tetracosanes |
| 06/28/1988 | US4753667 Compression of overhead to increase temperature, using compressed overhead to heat bottoms in reboiler |
| 06/22/1988 | EP0271658A2 Process for separation of hydrocarbon mixtures |
| 06/22/1988 | EP0271556A1 Method and device for deacidifying a gas containing h 2?s and/or co 2? as well as mercaptans. |
| 06/21/1988 | US4752312 Cryogenic gas separation |
| 06/15/1988 | EP0271147A1 Process for isomerization of a hydrocarbon feed stream |
| 06/15/1988 | EP0271143A2 Process for removing phosphine impurities from higher olefins |
| 06/14/1988 | US4751346 Process for separating ethylbenzene from xylenes by selective adsorption on a gallium beta zeolite (ATD-35) |
| 06/07/1988 | US4749819 Alumina-silica catalyst |
| 06/07/1988 | US4749555 Solvent stream of water, bridgehead bicyclo tertiary amine or bicyclo amidine and tertiary amine |
| 05/31/1988 | US4748011 Method and apparatus for sweetening natural gas |
| 05/31/1988 | US4747855 Solid absorbent for unsaturated hydrocarbon and process for separation of unsaturated hydrocarbon from gas mixture |
| 05/24/1988 | CA1236963A1 Removal of sulfur compounds from gases |
| 05/18/1988 | EP0267833A1 Process for the desulfurization of ternic oils |