| Patents for C07C 7 - Purification, separation orstabilisation of hydrocarbons; Use of additives (13,802) |
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| 07/08/1998 | CN1187182A Method for inhibiting hydrate formation |
| 07/08/1998 | CN1187181A Method for inhibiting hydrate formation |
| 07/07/1998 | US5777035 Solid product obtainable by metalation of nucleophilic displacement reaction between halogen alkylated crosslinked poly(vinylaromatic) resin and metallated conjugated diene compound |
| 07/07/1998 | US5776897 Treating disorders by application of insulin-like growth factors and analogs |
| 07/02/1998 | WO1998028246A1 Method for separating paraxylene comprising adsorption with water injection and crystallisation |
| 07/02/1998 | DE19757990A1 Catalyst for selective hydrogenation of acetylene in ethylene@ |
| 07/01/1998 | EP0850904A1 Process for the preparation of very pure isobutene combining a reactive distillation hydroisomerisation, a distillation and a carbon skeleton isomerisation |
| 07/01/1998 | EP0850903A1 Process for the preparation of very pure isobutene combining a reactive distillation hydroisomerisation and an isomerisation of the carbon skeleton |
| 06/30/1998 | US5773675 Charging hydrogen stream to reactor to remove carbon oxides to produce reduced carbon oxide content hydrogen stream, charging reduced carbon oxide hydrogen stream and butane stream to isomerization zone, isomerizing |
| 06/30/1998 | US5773674 Compositions and methods for inhibiting vinyl aromatic monomer polymerization |
| 06/30/1998 | US5771712 Gas stream is cooled, expanded, condensated and separated |
| 06/24/1998 | CN1038836C Separation purification of C60 and C70 mixture |
| 06/23/1998 | US5770781 Method for eliminating carbon oxides in feeds to a C5 and C6 paraffin isomerization process |
| 06/23/1998 | CA2075668C Process for the recovery of c2+ or c3+ hydrocarbons |
| 06/18/1998 | WO1998025872A1 Substance mixtures containing stabilizers and compounds containing vinyl groups |
| 06/18/1998 | WO1998025871A1 Improved chemical absorption process for recovering olefins from cracked gases |
| 06/18/1998 | DE19651307A1 Stoffmischungen, enthaltend vinylgruppenhaltige Verbindungen und Stabilisatoren Compositions containing vinyl-containing compounds and stabilizers |
| 06/18/1998 | CA2274703A1 Improved chemical absorption process for recovering olefins from cracked gases |
| 06/17/1998 | CN1184702A Method for forming spheroidal adsorbent used for adsorption stripping xylene |
| 06/16/1998 | US5767334 Distillation of product while separating vaporized boron trifluoride cocatalyst complex; simultaneously separating vaporized unreacted monomer from bottom product |
| 06/16/1998 | US5767332 Process and apparatus for producing aromatic hydrocarbon composition |
| 06/10/1998 | EP0826416A4 Method of conditioning hydrocarbon liquids and an apparatus for carrying out the method |
| 06/10/1998 | CN1184102A 1, 2 -bis -adducts of stable nitroxides with substituted ethylenes and stabilized compositions |
| 06/09/1998 | US5763730 Process for alkane isomerization using reactive chromatography |
| 06/09/1998 | US5763715 Butadiene removal system for ethylene plants with front end hydrogenation systems |
| 06/09/1998 | US5763714 Catalytic hydrotreatment of mixed aromatic stream to remove olefins and distillation to separate heavy and light oils, then selective adsorption to remove para-xylene |
| 06/09/1998 | US5763347 In-situ crystallized zeolite containing composition (LAI-ISC) |
| 06/03/1998 | EP0845458A1 1,2-Bis-adducts of stable nitroxides with substituted enthylenes and stabilized compositions |
| 06/03/1998 | EP0845455A1 Addition salts of acyl-amino acids and alpha-arylamines and process for the optical resolution of alpha-arylamines |
| 06/03/1998 | EP0845448A1 Inhibiting polymerization of vinyl aromatic monomers |
| 06/03/1998 | EP0844990A1 Vinylaromatic and cyclic aliphatic monomer purification process |
| 06/03/1998 | CN1183400A Process for refining 2, 6-dimethylnaphthalene by stepwise temp rising emulsifying crystallizing |
| 06/03/1998 | CN1183399A Method for recovering ethene from dilute ethene-contg. gas |
| 06/02/1998 | US5759386 Process for thioetherification and selective hydrogenation of light hydrocarbons |
| 06/02/1998 | CA2223043A1 Inhibiting polymerization of vinyl aromatic monomers |
| 05/26/1998 | US5756870 Methods for inhibiting the polymerization of ethylenically unsaturated monomers |
| 05/26/1998 | US5756791 Process for the adsorption of chelated organometallic compounds and alumina beads including a chelated organometallic compound |
| 05/26/1998 | US5755975 Separation of substances from a liquid mixture by crystallization |
| 05/20/1998 | EP0842241A1 Improved process for selective hydrogenation of highly unsaturated compounds and isomerization of olefins in hydrocarbon streams |
| 05/20/1998 | EP0842134A1 Treatments for inhibiting vinyl aromatic monomer polymerization |
| 05/20/1998 | CN1182443A Absorption process for rejection of reactor byproducts and recovery of monomers from waste gas streams in olefin polymerization processes |
| 05/20/1998 | CN1182118A Hydrogenation process |
| 05/19/1998 | US5753584 Catalyst system for selective hydrogenation of heteroaromatic sulfur-containing and nitrogen-containing compounds |
| 05/14/1998 | WO1998019980A1 A method for preventing or retarding the formation of gas hydrates |
| 05/13/1998 | EP0841315A1 Process for the oligomerisation of i-butene |
| 05/13/1998 | EP0840718A1 Treatments for inhibiting vinyl aromatic monomer polymerization |
| 05/12/1998 | US5750820 Multiple grade flush adsorption separation process |
| 05/12/1998 | US5750818 Alkylation process |
| 05/12/1998 | US5750765 7-substituted quinone methides as inhibitors for unsaturated monomers |
| 05/06/1998 | EP0840079A2 Cryogenic separation process of streams containing hydrogen methane, C3, C4, or C3/C4 hydrocarbons |
| 05/06/1998 | EP0839782A1 Process for the inhibition of coke formation in pyrolysis furnaces |
| 05/06/1998 | CN1181061A Hydrogenation of unsaturated cyclic compounds |
| 04/30/1998 | WO1998017609A1 Hydrocarbon gas processing |
| 04/29/1998 | EP0838447A1 Processes employing reusable aluminum catalysts |
| 04/29/1998 | EP0813517A4 Hydrogenation of unsaturated cyclic compounds |
| 04/28/1998 | US5744686 Adsorption of nitrogen compounds selected from acetonitrile, acrylonitrile, propionitrile by passing the stream to an adsorption zone containing non-acidic molecular seive adsorbent, withdrawing effluent free of nitrogen compounds |
| 04/28/1998 | US5744685 Unsaturated hydrocarbon separation and recovery process |
| 04/28/1998 | US5744672 Using a mixture of 3,5-di-tert-butyl-4-hydroxy-n,n-dimethylbenzylamine and an acid component in the presence of air |
| 04/28/1998 | US5744420 Alumina adsorbants in the form of coagulated droplets, extrudates or crushed particles for removal of coordination catalyts |
| 04/23/1998 | WO1998016490A1 Unsaturated hydrocarbon separation and recovery process |
| 04/23/1998 | WO1998016489A1 Unsaturated hydrocarbon separation and recovery process |
| 04/23/1998 | DE19643152A1 Increasing the yield of a plant for making ethane and propane |
| 04/23/1998 | CA2268933A1 Unsaturated hydrocarbon separation and recovery process |
| 04/22/1998 | CN1179410A Method for separating isoparaffin/n-paraffin using gas phase adsorption |
| 04/21/1998 | US5741350 Recovery of hydrocarbons from polyalkene product purge gas |
| 04/15/1998 | CN1038031C Improved method for producing high pure paraxylene through adsorption separation |
| 04/15/1998 | CN1038017C Method for recovering ethylene from vent gas from ethylene oxide plant |
| 04/09/1998 | WO1998014417A1 A zeolite-based ethylbenzene process adaptable to an aluminum chloride-based ethylbenzene plant |
| 04/09/1998 | WO1998014416A1 Compositions and methods for inhibiting vinyl aromatic monomer polymerization |
| 04/08/1998 | EP0834344A2 Process for the removal of nitrogen oxides from gases |
| 04/07/1998 | US5736053 Contacting liquid hydrocarbon with activated carbon which has been activated with gas comprising specified amount of water vapor |
| 04/02/1998 | WO1998013320A1 Process to produce styrene from petroleum feedstocks |
| 04/02/1998 | WO1998013117A1 Distillation of vinylaromatic monomer |
| 04/02/1998 | DE19639734A1 Production of oligomeric olefin(s) from hydrocarbon mixture |
| 03/31/1998 | US5734098 Method to monitor and control chemical treatment of petroleum, petrochemical and processes with on-line quartz crystal microbalance sensors |
| 03/31/1998 | US5734083 Water solubility; stability |
| 03/26/1998 | WO1998012160A1 Process for concurrent selective hydrogenation of acetylenes and 1,2 butadiene in hydrocarbon streams |
| 03/26/1998 | DE19741471A1 Recovering benzene from hydrocarbon mixture |
| 03/25/1998 | EP0737178B1 Recovery of reactants and products in production of alkenyl bridged ring compounds |
| 03/18/1998 | EP0829470A1 2-Cyano-3,5-dihydroxy-hex-2-ene carboxamide derivatives, process for their preparation and their use as medicaments |
| 03/18/1998 | EP0829010A1 Method to monitor and control chemical treatment of petroleum, petrochemical and processes with on-line quartz crystal microbalance sensors |
| 03/18/1998 | CN1176247A Refining process of pyrethrin |
| 03/18/1998 | CN1176246A Production technology of high-purity pyrethrin |
| 03/18/1998 | CN1037778C Method for desulfurization of hydrocarbon |
| 03/12/1998 | WO1998009930A1 Selective hydrogenation of aromatics in hydrocarbon streams |
| 03/11/1998 | EP0827944A1 Hydrogenation process |
| 03/11/1998 | CN1175997A Rectified reflux deethanizer |
| 03/11/1998 | CN1175940A Carbonylation of multi-component feedstock stream |
| 03/11/1998 | CN1175568A Process for recovery of pure hydrocarbons from hydrocarbon mixture whcih contains aromatics and non-aromatics |
| 03/05/1998 | DE19634470A1 Stabilised vinyl monomer mixture |
| 03/04/1998 | EP0826416A1 Method of conditioning hydrocarbon liquids and an apparatus for carrying out the method |
| 03/04/1998 | EP0826021A1 Process for the removal of mercaptans and hydrogen sulfide from hydrocarbon streams |
| 03/03/1998 | US5723026 Process for recovering pure benzene and pure toluene from aromatic hydrocarbon products |
| 02/26/1998 | WO1998007673A1 Process for the production of alkylated benzenes |
| 02/25/1998 | EP0728284A4 Cryogenic separation |
| 02/24/1998 | US5720929 Device for catalytic dehydrogenation of a C2+ paraffinic charge comprising means for inhibiting the freezing of water in the effluent |
| 02/24/1998 | US5720857 Separation of 1,2,4-trimethylbenzene from 1,2,3-trimethylbenzene by azeotropic distillation |
| 02/19/1998 | WO1998006684A1 Method for producing high purity isobutylene from a butane plus fraction containing isobutylene and butylene-1 |
| 02/18/1998 | EP0824142A2 Inhibiting fouling deposits in alkaline scrubbers |
| 02/12/1998 | CA2212684A1 Caustic tower trap for acetaldehyde |