| Patents for C07C 7 - Purification, separation orstabilisation of hydrocarbons; Use of additives (13,802) |
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| 09/13/1989 | EP0332324A2 Desulphurisation |
| 09/13/1989 | CN1035440A Processing nitrogen-rich, hydrogen-rich, and olefin-rich gases with physical solvents |
| 09/12/1989 | US4865826 Using regenerable sorbent |
| 09/05/1989 | US4864071 Process for separation of unsaturated hydrocarbon from gas mixture |
| 09/05/1989 | US4864069 Zeolitic para-xylene separation with diethyltoluene heavy desorbent |
| 09/05/1989 | US4864067 Process for hydrotreating olefinic distillate |
| 09/05/1989 | US4864027 Silane derivatives |
| 09/05/1989 | US4863587 Solvent extraction, distillation |
| 09/05/1989 | US4863493 Adsorption, filtration, stripping |
| 09/05/1989 | CA1259039A1 Selective adsorption and recovery of organic gases using ion-exchanged faujasite |
| 08/30/1989 | EP0329962A2 Method of separating organic compounds from air/permanent gas mixtures |
| 08/29/1989 | US4861939 Process for removing arsine from light olefin containing hydrocarbon feedstocks |
| 08/29/1989 | US4861628 Thin film composite membrane prepared by suspension deposition |
| 08/29/1989 | US4861566 Passing gas with controlled water content and temperature over bed of zinc oxide absorbent |
| 08/29/1989 | CA1258940A1 Surface coating compositions |
| 08/22/1989 | US4859286 Extractive distillation with selective solvent |
| 08/22/1989 | CA1258649A1 Hydrofining process for hydrocarbon containing feed streams |
| 08/16/1989 | EP0221942B1 Regenerative method for removing mercaptans contained in a gas |
| 08/09/1989 | EP0326946A2 Method and apparatus for olefinic separation |
| 08/08/1989 | US4855531 Diethylene or dipropylene glycol dimethyl ethers |
| 08/01/1989 | US4853012 Process and device for deacidification of a gas containing H2 S and/or CO2 and mercaptans |
| 07/26/1989 | EP0325059A2 Polymerization inhibitor composition for vinyl aromatic compounds |
| 07/25/1989 | US4851087 Which is recovered along with the m-compound as overhead product and can be separated by solvent extraction |
| 07/25/1989 | US4851020 From natural gas |
| 07/19/1989 | EP0324675A1 Process for separating the components of a gaseous mixture using a composite membrane |
| 07/18/1989 | US4849577 Process for eliminating jointly arsenic and carbon oxysulfide from an unsaturated hydrocarbon cut in the liquid phase |
| 07/18/1989 | US4849576 Pretreatment of butenes |
| 07/18/1989 | CA1257614A1 Removal of oxidizable impurities from methane and ethane |
| 07/18/1989 | CA1257535A1 Separation of co.sub.2 from a gaseous mixture |
| 07/12/1989 | EP0323893A2 Zeolite L |
| 07/12/1989 | CN1033792A Process for removing arsine from light olffin-containing hydrocarbon feedstocks |
| 07/05/1989 | EP0323307A1 Process for transporting a fluid which forms hydrates |
| 07/04/1989 | US4845066 Preparation of pillared clay |
| 07/04/1989 | CA1256841A1 Presulfuration of catalysts used for processing hydrocarbons |
| 06/27/1989 | US4843185 Method for enhancing the polymerization activity of crude cycloolefin monomers for bulk polymerization |
| 06/27/1989 | US4843184 Process for extracting paraffins from their mixtures with paraffinsulfonic acids |
| 06/27/1989 | US4842718 Process for recovery of hydrocarbons from a fluid feed |
| 06/20/1989 | CA1256125A1 Process for preparing purer 1-butene from the ethylene crude dimerization product |
| 06/13/1989 | US4839329 Vaccum drying titanium dioxide mixing with palladium chloride solution |
| 06/07/1989 | EP0318504A1 Process for separating higher hydrocarbons from a gas mixture. |
| 06/06/1989 | US4836896 Solvent extraction; rectification |
| 06/06/1989 | CA1255207A1 Process for removing acetylene from a c.sub.2-stream |
| 05/31/1989 | EP0317918A2 Pervaporation process for separating alcohols from ethers |
| 05/30/1989 | US4835338 Process for removal of carbonyl sulfide from organic liquid by adsorption using alumina adsorbent capable of regeneration |
| 05/30/1989 | US4835335 Using non-oligomerizing conditions and metal catalyst; then oligomerizaiton with metal catalyst on crystalline mordenite silicate support |
| 05/30/1989 | US4835334 Adsorption by potassium-exchanged x-type zeolite; then solvent desorption |
| 05/30/1989 | US4835332 Antideposit agents for coke |
| 05/24/1989 | EP0316478A1 Process for recovery and purification of c3-c4+ hydrocarbons using segregated phase separation and dephlegmation |
| 05/23/1989 | US4832830 Method for olefinic separation |
| 05/23/1989 | US4832718 Processing nitrogen-rich, hydrogen-rich, and olefin-rich gases with physical solvents |
| 05/17/1989 | EP0315981A2 Process for separating methane using permeable membrane |
| 05/16/1989 | US4831200 Process for the selective hydrogenation of alkynes |
| 05/16/1989 | US4830735 Adsorption on nickel-nickel oxide |
| 05/09/1989 | CA1253838A1 Synthesis of a crystalline silicoaluminophosphate |
| 05/03/1989 | EP0314040A1 Method for removing carbon dioxide gas and moisture in a city gas production |
| 05/03/1989 | EP0190212B1 Separation of water from organic fluids |
| 05/03/1989 | DE3735717A1 Process for scrubbing out sour gases |
| 05/02/1989 | US4827078 Process for extracting paraffins from their mixtures with alkanesulfonic acids |
| 05/02/1989 | US4827077 Separation of indene from alkyl aromatics |
| 05/02/1989 | CA1253516A1 Substituted 4-fluorothiocarbanilide herbicidal compounds and methods of use |
| 05/02/1989 | CA1253430A1 Process and apparatus for fractionation of a gaseous mixture |
| 04/26/1989 | CN1003999B Integrated fractionation in recovery of alkylaramatic hydrocarbons |
| 04/25/1989 | US4824527 Nested enrichment cascade distillation of unequal mixtures |
| 04/25/1989 | US4824443 Highly polar solvent |
| 04/19/1989 | EP0312377A2 Method of preparing thin film composite membranes by suspension deposition, and use of such membranes |
| 04/19/1989 | EP0312376A2 Polyurea membrane and its use for aromatics/non-aromatics separations |
| 04/19/1989 | EP0311903A2 Molten salt hydrate membranes for the separation of gases |
| 04/18/1989 | US4822947 Separation of m-xylene from o-xylene by extractive distillation with DMSO |
| 04/18/1989 | US4822578 Catalytic oxidation |
| 04/12/1989 | EP0310991A2 Process for producing m-xylene from o-xylene |
| 04/12/1989 | EP0310827A1 Process for the removal of metal halides from liquid, organic compounds not miscible with water |
| 04/06/1989 | WO1989003009A1 Processing nitrogen-rich, hydrogen-rich, and olefin-rich gases with physical solvents |
| 04/06/1989 | WO1989002882A1 Increasing the level of 2-methyl-2-butene in isoamylene |
| 04/05/1989 | EP0310140A2 Oligomeric amine and phenolic antidegradants |
| 04/05/1989 | EP0309968A2 Method for olefinic separation |
| 04/04/1989 | US4818254 Semi-permeable membranes consisting predominantly of polycarbonates derived from tetrahalobisphenols |
| 04/04/1989 | CA1252080A1 Catalysts and process for the selective hydrogenation of acetylenes |
| 03/29/1989 | EP0308992A2 Oligomeric amine and phenolic antidegradants |
| 03/29/1989 | EP0308569A1 Process for removing arsine from light olefin-containing hydrocarbon feedstocks |
| 03/28/1989 | US4816139 Sodium hypochlorite, fractionation |
| 03/23/1989 | WO1989002424A1 Process to produce aromatics of low acid-wash color |
| 03/21/1989 | US4814545 Process for removing impurities from an aromatic stream |
| 03/21/1989 | CA1251473A1 Obtaining but-2-enes from c.sub.4-hydrocarbon mixtures which contain but-1-ene and may or may not contain but-2-enes |
| 03/15/1989 | EP0306538A1 Process for preparing alpha-(3-benzylphenyl)propionic acid derivative |
| 03/08/1989 | EP0305919A1 Recovery of methane from land fill gas |
| 03/08/1989 | EP0305668A1 Process for the production of a concentrate of aromatics suitable for use as a blending component for petrol |
| 03/08/1989 | CN1031557A Process for jointly removing arsenic and carbon oxysulfuride from fraction of unsaturated hydrocarbon in liquid phase |
| 03/07/1989 | US4810267 Scrubbing of gas to recover light hydrocarbons |
| 02/28/1989 | US4808765 Carbonyl sulfide; selective absorption and hydrolysis |
| 02/28/1989 | US4808341 Process for the separation of mercaptans contained in gas |
| 02/21/1989 | US4806233 Method of separating a hot hydrocarbonaceous stream |
| 02/21/1989 | US4805413 Process for cryogenically separating natural gas streams |
| 02/21/1989 | CA1250224A1 Process for the separation of c in2 xx, c in3 xx or c in4 xx hydrocarbons |
| 02/21/1989 | CA1250223A1 Process for obtaining c in2 xx or c in3 xx hydrocarbons |
| 02/21/1989 | CA1250222A1 Process for the separation of c in2 xx or c in3 xx hydrocarbons from a pressurized hydrocarbon stream |
| 02/21/1989 | CA1250221A1 Separation of c in3 xx hydrocarbons by absorption and rectification |
| 02/21/1989 | CA1250220A1 Process for the separation of a c in2 xx hydrocarbon fraction from natural gas |
| 02/08/1989 | EP0302771A1 Process for the simultaneous removal of arsenic and carbon oxysulfide from a cut of unsaturated hydrocarbons in the liquid phase |
| 02/08/1989 | EP0302436A2 Metal-diketone absorbents for carbon monoxide or olefins |
| 02/08/1989 | CN1030929A Method for partial condensation of hydrocarbon gas mixtures |