Patents
Sitemap › C07 - Organic chemistry › C07C - Acyclic or carbocyclic compounds › C07C 7 - Purification, separation orstabilisation of hydrocarbons; Use of additives
Patents for C07C 7 - Purification, separation orstabilisation of hydrocarbons; Use of additives (13,802)
12/1998
12/23/1998CA2293577A1 Mixture of substances containing compounds with vinyl groups and stabilizers
12/23/1998CA2293431A1 Process for separating linear alpha olefins from 2-branched and/or 3-branched alpha olefins
12/22/1998US5851383 Process for thioetherification and selective hydrogenation of light olefins
12/16/1998EP0884101A2 Catalyst comprising at least a hydrogenation metal component and a synthetic clay
12/15/1998US5849982 Recovery of styrene from pyrolysis gasoline by extractive distillation
12/15/1998US5849981 Adsorptive separation of para-xylene using isopropylbenzene desorbent
12/15/1998US5849980 Low alkaline inverted in-situ crystallized zeolite membrane
12/15/1998US5849979 Process for cooling a hot vapor effluent of a hydrocarbon dehydrogenation zone and removing trace quantities of polynuclear aromatic compounds
12/15/1998US5849971 Process for cracking tertiary butyl alcohol in a reaction distillation column
12/15/1998US5849176 Process for producing thermally cracked products from hydrocarbons
12/09/1998EP0882231A1 Recovery of taxanes from conifers
12/09/1998EP0881925A1 Distillation of vinylaromatic monomer
12/09/1998EP0813567B1 Absorption process for rejection of reactor byproducts and recovery of monomers from waste gas streams in olefin polymerization processes
12/08/1998US5847250 Supported palladium catalyst for selective catalytic hydrogenation of acetylene in hydrocarbonaceous streams
12/08/1998US5847249 Apparatus and process for catalytic distillations
12/08/1998US5847209 Process for recovery of solid and reusable urea from the urea adduction process
12/03/1998WO1998054091A1 Zeolite itq-3
12/03/1998DE19723049A1 Recovery of alpha-olefin from mixture of hydrocarbon(s)
12/03/1998DE19722901A1 Porous solid inorganic body used in separation processes
12/02/1998EP0880489A1 Process for production of paraxylene
12/02/1998EP0880488A1 Process for conversion of ethylbenzene
12/02/1998EP0880487A1 Separation process in which a membrane is used
12/01/1998US5844025 1,2-Bis-adducts of stable nitroxides with substituted ethylenes and stabilized compositions
12/01/1998US5842357 Landfill gas recovery
12/01/1998CA2137662C Regeneration of acetylene converter catalysts by hydrogen stripping
11/1998
11/25/1998EP0879220A1 Hydrocarbon separation
11/24/1998US5840160 Separation of 3-carene from limonene by extractive distillation
11/24/1998US5840099 Process for the removal of water, CO2, ethane and C3 + hydrocarbons from a gas stream
11/18/1998CN1040747C N-substituent-4-substd. phenyl-5-alkyl-5-substd. benzyl-pyrrolidone-2, its intermediate, and its synthetic method and use
11/12/1998DE19811602A1 New process for prevention of premature polymerisation of styrene during its production by dehydrogenation of ethyl:benzene
11/12/1998DE19719377A1 Recovery of alpha olefin(s) from feed
11/04/1998CN1197783A Method of deactivation of complex organometallic catalyst of homogenous process, such as ethylene dimerization or digomerization into linear alpha-olefins, and of its isolation from reaction mass
11/03/1998CA2007937C Use of an aluminum-based adsorbent including alkalines and alkaline-earth metals for purifying polyolefins
10/1998
10/29/1998DE19817758A1 Removal of impure compounds from hydrocarbon streams
10/28/1998EP0873981A1 Process for the prevention of decomposition of gaseous acetylene
10/28/1998EP0873291A1 Process for manufacturing ethylbenzene or cumene
10/28/1998EP0710222B1 Method for inhibiting the polymerization of vinyl aromatics
10/28/1998CN1196975A Non-crystalline alloy catalyst containing Ni and B, its prepn. and application
10/27/1998CA2076824C Process for removing aldehydes and/or vinyl esters from gaseous or liquid process streams
10/25/1998CA2231696A1 Material comprising a hydrate-like product of gases, method of preparing same, and utilization thereof
10/22/1998WO1998046553A1 Beta-elemene, method to prepare the same and uses thereof
10/21/1998EP0872537A2 Process for the production of ethylene from hydrocarbon feedstocks
10/21/1998CN1196346A Method for preparing ethylene from hydrocarbon raw material
10/20/1998US5824836 Processing system for condensing hydrocarbon emissions from a vapor stream
10/20/1998US5824829 Hydrocarbon viscosity inhibitor and inhibiting method
10/20/1998US5824617 Porous and nonporous substrates and a polycrystalline layerof zeolit; immersing substrate into synthesis mixture,autoclaving, washing; separation of dyes from alcohol and oligomers from hexane
10/15/1998WO1998045385A1 Composition inhibiting radical polymerisation of ethylenically unsaturated monomers and method for inhibiting radical polymerisation of said monomers
10/15/1998DE19807226A1 Rapid one-stage deactivation and isolation of complex organo-metallic catalyst from homogeneous process
10/14/1998CN1195655A Adsorption separation method for liquefied butagas isomer
10/06/1998US5817901 Selective hydrogenation of hydrocarbon cuts containing monounsaturated and polyunsaturated hydrocarbons
09/1998
09/30/1998EP0867440A2 Method for treating silane-containing gas
09/30/1998CN1194256A Polymerizing control method
09/30/1998CN1039988C Selective hydrogenation of hydrocarbon
09/24/1998WO1998041597A1 Process for purifying material flows
09/22/1998US5811630 PSA process with reaction for reversible reactions
09/22/1998US5811629 Crystallization process for purification of paraxylene
09/22/1998US5811607 Composite shingle particle salvage system
09/20/1998CA2232502A1 Polymerization inhibitor process
09/17/1998WO1998040450A1 Olefin purification by adsorption of acetylenics and regeneration of adsorbent
09/17/1998DE19710762A1 Verfahren zur Reinigung von Stoffströmen A process for the purification of gas streams
09/17/1998CA2284515A1 Olefin purification by adsorption of acetylenics and regeneration of adsorbent
09/15/1998US5808169 Process for the preparation of 1,2,4,5-dimethyldiisopropylbenzene
09/09/1998CN1192430A Process for purifying naphthalene by selective hydrotreatment followed by separation
09/08/1998US5804689 Process for recovering acetylene from hydrocarbons by thermal cracking
09/02/1998EP0842134A4 Treatments for inhibiting vinyl aromatic monomer polymerization
09/01/1998US5799507 Hydrocarbon gas processing
08/1998
08/26/1998EP0551352B1 Method and apparatus for recovering chemical compounds from the effluent stream of a supercritical fluid extraction
08/19/1998EP0642484B1 Verfahren zur Herstellung unverzweigter Olefine
08/18/1998CA1340001C Process for separating components of a gas stream
08/13/1998WO1998034892A1 Method of purifying 1,3,5-triisopropylbenzene
08/13/1998CA2274235A1 Method of purifying 1,3,5-triisopropylbenzene
08/12/1998EP0840718A4 Treatments for inhibiting vinyl aromatic monomer polymerization
08/12/1998CN1190385A Method for inhibiting hydrate formation
08/11/1998US5792899 Process for the management of polynuclear aromatic compounds produced in a hydrocarbon dehydrogenation reaction zone
08/11/1998US5792898 Process for the management of mononuclear and polynuclear aromatic compounds produced in a hydrocarbon dehydrogenation reaction zone
08/11/1998US5792897 Hydrocardon recovery from corrosive effluent stream
08/05/1998EP0856343A1 Purifier and purifying method for polymerizable organic compounds
08/05/1998EP0649387B1 Synthesis of zeolite films bonded to substrates, structures and uses thereof
08/05/1998CN1189485A Purifier and purifying method for polymerizable organic compounds
08/05/1998CN1039428C Process for recovering olefines from tail gas of catalytic cracking process
08/04/1998US5789646 Process for the purification of medium-chain olefins
08/04/1998US5789643 Process for oligomerizing I-butene comprising hydroisomerizing portion of condensate and recycling the hydroisomerate to fractionation
08/04/1998CA2101526C Inhibiting popcorn polymer formation with compounds incorporating group iv elements
07/1998
07/30/1998WO1998032717A1 Method for eliminating inhibitors of polymerisation of monomer mixtures using an alumina with optimised form
07/30/1998WO1998032715A1 Method for eliminating inhibitors of polymerisation of monomer mixtures using an optimised alumina
07/29/1998EP0637294B1 Polymerization inhibitor for vinyl aromatics
07/29/1998CN1039311C Method for treatment of sulfone-bearing mixture
07/23/1998WO1998031446A1 Device and method for recovering solvents from a hydrocarbon mixture contaminated with impurities
07/22/1998EP0854126A1 Process for the purification of naphthalene by selective hydrotreatment followed by a separation
07/22/1998EP0853593A1 Synthetic porous crystalline mcm-61, its synthesis and use
07/22/1998CN1188546A Method to monitor and control chemical treatment of petroleum, petrochemical and processes with on-line quartz crystal microbalance sensors
07/16/1998WO1998030523A1 Process and apparatus for the production and recovery of p-xylene
07/16/1998DE19701006A1 Vorrichtung und Verfahren zur Rückgewinnung von Lösungsmitteln aus einem verunreinigten Kohlenwasserstoffgemisch Apparatus and method for recovering solvents from a contaminated hydrocarbon mixture
07/16/1998CA2275868A1 Process and apparatus for the production and recovery of p-xylene
07/14/1998US5779881 Phosphonate/thiophosphonate coking inhibitors
07/14/1998CA2079905C Removal of organochlorides
07/09/1998WO1998029368A1 Process for selectively separating hydrogen, or both hydrogen and carbon monoxide from olefinic hydrocarbons
07/09/1998WO1998029367A1 Apparatus and method for separating olefins from an olefins-rich product stream
07/09/1998WO1998029366A1 Recovery of a secondary ethylene stream from an ethylene purification process
07/08/1998EP0852256A1 Phosphonate/thiophosphonate coking inhibitors
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