| Patents for C07C 7 - Purification, separation orstabilisation of hydrocarbons; Use of additives (13,802) |
|---|
| 09/14/1999 | CA2120046C Separately removing mercaptans and hydrogen sulfide from gas streams |
| 09/10/1999 | WO1999044972A1 Polymerization-inhibiting composition, polymerization inhibitor and method for inhibiting polymerization |
| 09/10/1999 | WO1999044971A1 Cryogenic separation process for the recovery of components from the products of a dehydrogenation reactor |
| 09/08/1999 | EP0940462A2 Improved high-aromatic oil, and rubber composition and oil extended synthetic rubber both prepared by using said high aromatic oil |
| 09/08/1999 | EP0940413A2 Process for the inhibition of pop-corn polymerization |
| 09/08/1999 | EP0940381A2 process for the recovery of cyclopentane and/or cyclopentene |
| 09/08/1999 | EP0715609B1 Isoparaffin-olefin alkylation |
| 09/08/1999 | CN1228073A Process for production of alkylated benzenes |
| 09/07/1999 | US5948950 Process for separating para-xylene, comprising an adsorption step with injection of water and a crystallization step |
| 09/07/1999 | US5948949 Process for producing 2,6-dimethylnaphthalene |
| 09/07/1999 | US5948945 Vinylation of an organic acidic-hydrogen compound, which entails reacting an organic acidic-hydrogen compound with acetylene wherein reactor regions initiating decomposition of acetylene are treated with an effective amount of a chemically |
| 09/07/1999 | US5948942 Bimetallic catalyst for the simultaneous selective hydrogenation of diolefins and nitriles and method of making same |
| 09/01/1999 | EP0939068A1 Method for purifying crystalline substance |
| 09/01/1999 | CN1227590A Composition preventing the polymerizationo of ethylene unsaturated monomers, method of preparation and use thereof |
| 09/01/1999 | CN1227533A Substance mixtures containing stablizers and compounds containing vinyl groups |
| 08/25/1999 | EP0937017A1 Unsaturated hydrocarbon separation and recovery process |
| 08/25/1999 | EP0937016A1 Hydrocarbon gas processing |
| 08/25/1999 | CN1226547A Method for separating C5-C8 materials or intermediate materials |
| 08/24/1999 | US5942656 Process for separating linear alpha olefins from 2-branched and/or 3-branched alpha olefins |
| 08/24/1999 | US5942655 Process for the removal of heavy hydrocarbonaceous co-products from a vapor effluent from a normally gaseous hydrocarbon dehydrogenation reaction zone |
| 08/24/1999 | US5942654 Process for the removal of corrosive compounds from a fluid stream |
| 08/24/1999 | US5942650 Selective absorbtion of acetonitrile from aromatic stream with nonacidic molecular sieve of specific zeolites with pore size of less than 5.5 angstroms prevents downstream poisoning of acid catalysts in alkyl aromatic production |
| 08/24/1999 | US5942200 Charging hydrogen stream to aromatics saturation zone wherein hydrocarbonaceous stream containing aromatic compounds is reacted to saturate and catalytically methanate carbon oxides; separating hydrogen stream with reduced carbon oxides |
| 08/24/1999 | US5942119 Conducting process in presence of hydrogen; reduction in flux decay |
| 08/19/1999 | WO1999041328A1 Mitigating fouling and reducing viscosity |
| 08/19/1999 | WO1999020256A3 Medicament excipient particles for tissue-specific application of a medicament |
| 08/19/1999 | CA2322047A1 Mitigating fouling and reducing viscosity |
| 08/18/1999 | CN1226227A Method for producing high purity isobutylene from butane plus fraction containing isobutylene and butylene-1 |
| 08/18/1999 | CN1044703C Method and apparatus for extracting alpha-methylnaphthalene and beta-methylnaphthalene |
| 08/18/1999 | CN1044661C Pesticides, insecticides, miticides compositions containing silanes derivatives |
| 08/17/1999 | US5939596 Butadiene removal system for ethylene plants with front end hydrogenation systems |
| 08/12/1999 | DE19804806A1 Hydrogenation of acetylene to ethylene by simple process |
| 08/11/1999 | EP0934996A1 Process for the chromatographic separation of a C5-C8 or intermediate fraction into three effluents, respectively rich in linear, monobranched and multibranched parrafins |
| 08/11/1999 | EP0799401A4 Rectified reflux deethanizer |
| 08/11/1999 | CN1044599C Method for removing trace impurity of carbon monoxide from gas mixture |
| 08/10/1999 | US5936136 Process for separating linear alpha olefins from 2 branched and/or3-branched alpha olefins |
| 08/04/1999 | EP0933108A1 Device for the discontinuous injection of a fluid F2 into a zone Z1 or for the discontinuous extraction of a fluid F1 from a zone Z1 |
| 08/04/1999 | CN1225081A Recovery of styrene from pyrolysis gasoline by extractive distillation |
| 08/04/1999 | CN1224706A Removal of alkyl halides from hydrocarbon stream |
| 08/04/1999 | CN1044470C Method for separating m-xylene and ortho-xylene from mixed xylene and ethyl benzene |
| 08/04/1999 | CN1044468C Method of refining cracked gasoline and crude benzole by liquid-phase coking distillation method with clays |
| 07/29/1999 | DE19758536A1 Preparation of acetaldehyde from ethylene and oxygen |
| 07/28/1999 | EP0931042A1 Process for concurrent selective hydrogenation of acetylenes and 1,2 butadiene in hydrocarbon streams |
| 07/28/1999 | EP0931039A1 Selective hydrogenation of aromatics in hydrocarbon streams |
| 07/27/1999 | US5928500 Removal of halogenated organic compounds from hydrocarbon streams |
| 07/21/1999 | EP0930285A1 Process for preparing butene-1 |
| 07/21/1999 | EP0889868A4 Compositions and methods for inhibiting vinyl aromatic monomer polymerization |
| 07/21/1999 | CN1223667A Method and products to absorb oil and organic solvents from water and from sea |
| 07/21/1999 | CN1044225C Process and equipment for the separation of an unsaturated hydrocarbon from a fluid mixture with other hydrocarbons |
| 07/15/1999 | WO1999035110A1 Ethylene plant refrigeration system |
| 07/14/1999 | CA2257454A1 Process for obtaining 1-butene |
| 07/13/1999 | US5922924 Obtaining from a charge a first fraction containing m-xylene and second fraction containing p-xylene, isomerizing the first fraction to product isomerate containing p-xylene, recycling the isomerate, crystallizing p-xylene |
| 07/13/1999 | CA2168387C Alkyne hydrogenation catalyst and process |
| 07/08/1999 | WO1999033770A1 Method for producing 2,6-dmn from mixed dimethylnaphthalenes by crystallization, adsorption and isomerization |
| 07/08/1999 | CA2315628A1 Method for producing 2,6-dmn from mixed dimethylnaphthalenes by crystallization, adsorption and isomerization |
| 07/06/1999 | US5919961 Metal compounds of cyclopentadienes, enantioselective hydrogenation of imines. |
| 06/30/1999 | EP0926114A2 Crystallization of 2,6-Dimethylnaphthalene |
| 06/30/1999 | EP0925829A1 Acid activated clay for treating aromatic hydrocarbons |
| 06/29/1999 | CA2035337C Normal paraffin adsorptive separation using non-normal hydrocarbon pre-pulse stream |
| 06/24/1999 | WO1999031201A1 Process for recovering olefins |
| 06/23/1999 | EP0924287A2 Removal of alkyl halides from hydrocarbon stream |
| 06/23/1999 | EP0900182A4 Methods for inhibiting the polymerization of ethylenically unsaturated monomers |
| 06/22/1999 | US5914434 Separation of linear from branched hydrocarbons using a carbon membrane |
| 06/22/1999 | US5914379 Compression of ethylenically unsaturated monomers |
| 06/19/1999 | CA2256215A1 Removal of alkyl halides from hydrocarbon stream |
| 06/17/1999 | WO1999029641A1 Process for separating linear internal olefins from branched internal olefins |
| 06/17/1999 | CA2313327A1 Process for separating linear internal olefins from branched internal olefins |
| 06/16/1999 | EP0922748A1 Process for the separation of a C5-C8 feed in three fractions rich in normal , mono-branched and multi-branched paraffins |
| 06/16/1999 | EP0922020A1 Process for the production of alkylated benzenes |
| 06/16/1999 | EP0922018A1 Method for producing high purity isobutylene from a butane plus fraction containing isobutylene and butylene-1 |
| 06/15/1999 | US5912395 Raffinate line flush in simulated continuous moving bed adsorptive separation process |
| 06/15/1999 | CA2099359C Alkylation catalyst regeneration |
| 06/10/1999 | WO1999028688A1 Method and installation for separating off c2- or c2+ hydrocarbons |
| 06/10/1999 | WO1999028279A1 Method for purifying norbornene by distillation |
| 06/10/1999 | DE19754627A1 Selectively removing ammonia or nitrogen oxides from residual gases |
| 06/09/1999 | EP0920404A1 A zeolite-based ethylbenzene process adaptable to an aluminum chloride-based ethylbenzene plant |
| 06/08/1999 | US5910232 Method for inhibiting polymer formation in styrene processing |
| 06/03/1999 | WO1999026937A1 Method for removal of oxygenate impuritites from organic chemical streams |
| 06/03/1999 | CA2311135A1 Method for removal of oxygenate impuritites from organic chemical streams |
| 06/02/1999 | EP0817675B1 Catalyst for removing olefins from aromatic compounds or mixtures thereof |
| 06/02/1999 | DE19752703A1 Verfahren und Anlage zum Abtrennen von C2- oder C2+-Kohlenwasserstoffen Method and apparatus for separating C2 or C2 + hydrocarbons |
| 05/26/1999 | CN1217311A Method for inhibiting polymerization in distillation process of ethenyl sundex |
| 05/25/1999 | US5907076 Oxidizing hydrogen, but not olefins, using using a metal or metal oxide of groups ib, iib, iiia, iva or va. |
| 05/25/1999 | US5907071 Tetramethyl-1-piperonoxy, free radicals and oxime compounds,4-hydroxy-2,2,6,6-tetramethyl-1-piperidinoxy free radicals for polymerization inhibition |
| 05/20/1999 | WO1999024139A1 Separation process |
| 05/19/1999 | EP0915815A1 Method of removing hydrogen sulfide, ammonia, phosphine and arsine from acetylene |
| 05/18/1999 | US5905182 Process for the purification of benzene that comprises two permeation stages |
| 05/18/1999 | US5905178 Removal of α-methyl styrene from cumene |
| 05/18/1999 | CA2085582C Process for adsorbing sulfur species from propylene/propane using regenerable adsorbent |
| 05/11/1999 | CA2164742C Alkyne hydrogenation process |
| 05/06/1999 | EP0912654A1 Composition preventing the polymerisation of ethylene unsaturated monomers, method of preparation and use thereof |
| 05/06/1999 | EP0912471A1 Polymerisation inhibitor |
| 05/04/1999 | US5900523 Process for adsorptive separation of metaxylene from xylene mixtures |
| 04/29/1999 | WO1999020591A1 Preparation of ethylene by gas permeation |
| 04/29/1999 | WO1999020584A1 Composition and method for inhibiting polymerization during the anaerobic production of styrene |
| 04/29/1999 | WO1999020256A2 Medicament excipient particles for tissue-specific application of a medicament |
| 04/29/1999 | WO1999007656A3 Improved processes for making surfactants via adsorptive separation and products thereof |
| 04/29/1999 | CA2308236A1 Medicament excipient particles for tissue-specific application of a medicament |
| 04/27/1999 | US5898091 Selective hydrogenation, etherification, separation of oxygen containing impurities and methasis |
| 04/27/1999 | US5897866 Process for the extraction of lycopene using phospholipid in the extraction medium |