| Patents for C07C 7 - Purification, separation orstabilisation of hydrocarbons; Use of additives (13,802) |
|---|
| 02/11/1998 | CN1172848A Method for inhibition and delay forming or aggregating hydrate of production efflux material |
| 02/11/1998 | CN1172791A Distillation process for improving yield of pure products from crude anthracene |
| 02/04/1998 | EP0822245A2 Process for obtaining pure aromatics from hydrocarbon mixtures containing aromatics and non-aromatics |
| 02/04/1998 | CN1172096A Method for refining beta-methyl naphthalene from coal-tar oil crude methyl naphthalene |
| 02/03/1998 | US5714055 Caustic tower trap for acetaldehyde |
| 01/31/1998 | CA2210980A1 A process for the recovery of pure hydrocarbons from a hydrocarbon mixture |
| 01/29/1998 | DE19644106C1 Efficient low temperature separation of dehydrogenated hydrocarbon(s) from hydrogen and methane |
| 01/28/1998 | EP0820972A1 Process for the isoalkane/n-alkane separation by adsorption in the gas phase using pressure modulation and four adsorbers |
| 01/28/1998 | CN1171771A Method for separation of paraxylene involving at least one high temp. crystallization stage and at least one clay treatment located upstream of adsorption area |
| 01/28/1998 | CN1171770A Paraxylene separation process comprising at least two high temp crystallization stages |
| 01/28/1998 | CN1037171C Separation method of c10+heavy hydrocarbon |
| 01/27/1998 | US5712415 Process for the simultaneous selective hydrogenation of diolefins and nitriles |
| 01/22/1998 | WO1998002500A1 Composition preventing the polymerisation of ethylene unsaturated monomers, method of preparation and use thereof |
| 01/22/1998 | WO1998002403A1 Method for inhibiting vinyl aromatic monomer polymerization in condenser and compression systems |
| 01/22/1998 | WO1998002400A1 Polymerisation inhibitor |
| 01/22/1998 | CA2261064A1 Polymerisation inhibitor |
| 01/20/1998 | US5710357 Process for recovering olefins from cat-cracked gas without accumulating undesirable oxides of nitrogen |
| 01/14/1998 | EP0818432A1 Catalytic process for making high reactivity alkylating agents and products resulting therefrom |
| 01/14/1998 | EP0818417A1 Zeolite itq-1 |
| 01/14/1998 | EP0818225A1 A process for the extraction of lycopene and extracts containing it |
| 01/14/1998 | EP0817766A1 Use of naturally acid smectites to remove olefines from aromatics or aromatic mixtures |
| 01/14/1998 | EP0817675A1 Catalyst for removing olefins from aromatic compounds or mixtures thereof |
| 01/14/1998 | CN1170004A Compression of ethylenically unsaturated monomers |
| 01/10/1998 | CA2209521A1 Catalytic process for making high reactivity alkylating agents and products resulting therefrom |
| 01/08/1998 | WO1998000377A1 Method of removing hydrogen sulfide, ammonia, phosphine and arsine from acetylene |
| 01/08/1998 | DE19626484A1 Verfahren zur Entfernung von Schwefelwasserstoff, Ammoniak, Phosphor- und Arsenwasserstoff aus Acetylen A process for removing hydrogen sulfide, ammonia, phosphorus, and arsine from acetylene |
| 01/07/1998 | EP0815910A1 Process for the removal of corrosive compounds from a fluid stream |
| 01/07/1998 | CN1169413A Procedure for production of pure benzene and pure toluene |
| 01/06/1998 | US5705730 Isomerization process with improved chloride recovery |
| 01/06/1998 | US5705038 Distillation of mixtures and extraction using o-cresol, methyl n-amyl ketomime, n-methyl pyrrolidone, tripropylene glycol, 2-methyl-2,4-pentanediol and isophorone |
| 12/30/1997 | US5703045 Nervous system disorders |
| 12/30/1997 | CA2002243C Method for preparing p-isobutylstyrene |
| 12/29/1997 | EP0813567A1 Absorption process for rejection of reactor byproducts and recovery of monomers from waste gas streams in olefin polymerization processes |
| 12/29/1997 | EP0813517A1 Hydrogenation of unsaturated cyclic compounds |
| 12/24/1997 | WO1997048666A1 Alkylation process |
| 12/24/1997 | CN1036776C Method for separation and purification of Fuller olefinic carbon 60 |
| 12/24/1997 | CA2229869A1 Alkylation process |
| 12/18/1997 | DE19623791A1 Selective removal of nitrogen oxide(s) from carrier gas |
| 12/17/1997 | EP0812345A1 Method for selective hydrogenation of a distillation cut of hydrocarbons |
| 12/17/1997 | EP0812307A1 Method for inhibiting hydrate formation |
| 12/17/1997 | CN1168128A Method for producing para-xylene by high-temp. crystallisation in at least one stage and partial crystal fusion |
| 12/16/1997 | US5698752 Of alkyne; in presence of a hydrogenation catalyst and a sulfur compound |
| 12/16/1997 | US5698142 From molten stock; concurrent mixing, cooling |
| 12/16/1997 | US5698080 In the presence of a solvent that forms an azeotropic mixture with phellandrene |
| 12/14/1997 | CA2205739A1 Removal of nitrogen oxides from gases |
| 12/11/1997 | WO1997046595A1 Method and products to absorb oil and organic solvents from water and from sea |
| 12/11/1997 | WO1997046504A1 Mixtures containing monomers and stabilizers |
| 12/11/1997 | CA2256334A1 Method and products to absorb oil and organic solvents from water and from sea |
| 12/10/1997 | EP0811630A2 Chiral compounds |
| 12/10/1997 | EP0811590A1 Process for compressing ethylenically unsaturated monomers |
| 12/10/1997 | EP0810984A1 Method for separating para-xylene by preprocessing using selective hydrogenation and activated earth |
| 12/09/1997 | CA2013526C Extractive distillation of hydrocarbons employing solvent mixture |
| 12/03/1997 | EP0809619A1 Method for inhibiting hydrate formation |
| 12/03/1997 | EP0763003A4 Crystallization of paraxylene from high purity paraxylene feeds |
| 12/03/1997 | CN1166820A Method for inhibiting premature polymerization of vinyl aromatic monomers |
| 12/02/1997 | US5693726 Contacting starting materials with scavenger of proton donating contaminants consisting of solid insoluble product of reaction between haloalkylated crosslinked polyvinylaromatic resin and metallated conjugated diene |
| 11/27/1997 | WO1997044298A1 Recovery of styrene from pyrolysis gasoline by extractive distillation |
| 11/25/1997 | CA2141383C Precooling for ethylene recovery in dual demethanizer fractionation systems |
| 11/25/1997 | CA2126318C Process for the removal of green oil from a hydrocarbon stream |
| 11/25/1997 | CA2108021C Process for upgrading the quality of light ends |
| 11/20/1997 | WO1997035462A3 Improved high-aromatic oil, and rubber composition and oil extended synthetic rubber both prepared by using said high aromatic oil |
| 11/19/1997 | EP0807678A1 Process for inhibiting or retarding the formation of hydrates in a production effluent |
| 11/18/1997 | US5689033 Solvent extraction, simplified process for production of methyl tert-butyl ether and tert-amyl methyl ether |
| 11/18/1997 | US5689032 Separating hydrocarbon gas |
| 11/18/1997 | US5689030 Separation of organic fluorides from catalytic alkylation of olefins by isoparaffins in the presence of hydrogen fluoride |
| 11/18/1997 | US5689028 Process to regulate olefin production by catalyst system inhibition |
| 11/18/1997 | US5688479 Process for removing HCl from hydrocarbon streams |
| 11/13/1997 | WO1997042146A1 Methods for inhibiting the polymerization of ethylenically unsaturated monomers |
| 11/11/1997 | US5685992 Pumping; separating p-xylene |
| 11/11/1997 | US5685972 Production of benzene, toluene, and xylene (BTX) from FCC naphtha |
| 11/11/1997 | US5685170 In natural gas, absorber upstream from an expander and a separator |
| 11/06/1997 | WO1997041085A1 Method for separating hydrogen and methane from gaseous hydrocarbon |
| 11/05/1997 | EP0804400A1 Hydroformylation of a multi-component feed stream |
| 11/05/1997 | EP0804394A1 Method for producing para-xylene by high-temperature crystallisation in at least one stage and partial crystal fusion |
| 11/05/1997 | CN1163879A Procedure for generating pure aromatics from reformed gasoline and device for implementing the procedure |
| 10/30/1997 | WO1997039994A1 Process for removing nitrogenated and sulfurated contaminants from hydrocarbon streams |
| 10/30/1997 | CA2252521A1 Process for removing nitrogenated and sulfurated contaminants from hydrocarbon streams |
| 10/29/1997 | CN1163253A Process for alkylating aromatic compound |
| 10/28/1997 | US5681908 Absorption process for rejection of reactor byproducts and recovery of monomers from waste gas streams in olefin polymerization processes |
| 10/28/1997 | US5681360 Landfill gas recovery |
| 10/21/1997 | US5678424 Stripping stage; overhead condenser |
| 10/15/1997 | EP0800499A1 Paraxylene separation process comprising at least two high temperature crystallization stages |
| 10/15/1997 | EP0800498A1 Method for the separation of paraxylene involving at least one high temperature crystallization stage and at least one clay treatment located upstream of the adsorption area |
| 10/15/1997 | EP0800496A1 Lead- and barium-free igniter compounds |
| 10/15/1997 | CN1161951A Two-stage crystallization method for extracting coarse anthracene from anthracene oil |
| 10/14/1997 | CA2141385C Open loop mixed refrigerant cycle for ethylene recovery |
| 10/14/1997 | CA2141384C Mixed refrigerant cycle for ethylene recovery |
| 10/08/1997 | EP0799813A2 Distillation process for the recovery of pure products from crude anthracene |
| 10/08/1997 | EP0799401A1 Rectified reflux deethanizer |
| 10/08/1997 | CN1161318A Method for removal of metal (Ti or V) alkoxide compounds from liquid hydrocarbon |
| 10/08/1997 | CN1036050C Improved adsorption separation process for simulating moving bed |
| 10/07/1997 | US5675052 Selective adsorption; reacting enriched fractions of isobutane and propene |
| 10/02/1997 | WO1997036178A1 Method to monitor and control chemical treatment of petroleum, petrochemical and processes with on-line quartz crystal microbalance sensors |
| 10/02/1997 | WO1997035821A1 Compositions and methods for inhibiting vinyl aromatic monomer polymerization |
| 10/02/1997 | WO1997035462A2 Improved high-aromatic oil, and rubber composition and oil extended synthetic rubber both prepared by using said high aromatic oil |
| 10/02/1997 | CA2241209A1 Compositions and methods for inhibiting vinyl aromatic monomer polymerization |
| 09/30/1997 | US5672804 Process for the removal of polynuclear aromatic compounds from a vapor effluent from a normally gaseous hydrocarbon dehydrogenation reaction zone |
| 09/30/1997 | US5672771 Etherification and isomerization |
| 09/24/1997 | CN1160035A Method for separation of petroleum cracking C5 fraction by liquid phase feeding extraction rectification |
| 09/24/1997 | CN1160034A Method for separation of cracking C5 fraction |