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Class Information
Number: 585/862
Name: Chemistry of hydrocarbon compounds > Purification, separation, or recovery > By addition of extraneous agent, e.g., solvent, etc. > N-containing > Carbonyl moiety-containing
Description: Subject matter wherein an agent contains the =C=O functional grouping, e.g., and acid, an aldehyde, a ketone, etc.










Patents under this class:

Patent Number Title Of Patent Date Issued
8362314 Method for obtaining aromatic hydrocarbons from a hydrocarbon mixture Jan. 29, 2013
8058498 Device for removing oxygen-containing organic compounds from mixtures of various hydrocarbon compounds Nov. 15, 2011
7803271 Method of extracting the hydrogen sulfide contained in a hydrocarbon gas Sep. 28, 2010
7355087 Production of 1-alkenes from mixed olefin streams using catalytic distillation Apr. 8, 2008
7204927 Settling aids for solids in hydrocarbons Apr. 17, 2007
7048847 Settling aids for solids in hydrocarbons May. 23, 2006
7019188 Use of ionic liquids to separate olefins, diolefins and aromatics Mar. 28, 2006
6887370 Separation of oxygenates from a hydrocarbon stream May. 3, 2005
6781026 Aromatics purification from petroleum streams Aug. 24, 2004
6689926 Process for purifying styrene monomer feedstock prior to polymerization Feb. 10, 2004
6483003 Removal of impurities from a hydrocarbon component or fraction Nov. 19, 2002
6407306 Process for extracting carotenes from carotene-containing materials Jun. 18, 2002
6114593 Method for reducing organic fluoride levels in hydrocarbons Sep. 5, 2000
5951916 Solutions of buckminsterfullerene (C.sub.60 ) in n-ethyl-2-pyrrolidone (NEP) Sep. 14, 1999
5877385 Process including extractive distillation and/or dehydrogenation to produce styrene from petroleum feedstock including ethyl-benzene/xylene mixtures Mar. 2, 1999
5849982 Recovery of styrene from pyrolysis gasoline by extractive distillation Dec. 15, 1998
5458741 Separation of benzene from close boiling hydrocarbons by extractive distillation Oct. 17, 1995
5443697 Separation of heptane from 1-heptene by extractive distillation Aug. 22, 1995
5405504 Separation of 1-decene from 2-octanone by azeotropic distillation Apr. 11, 1995
5399244 Process to recover benzene from mixed hydrocarbons by extractive distillation Mar. 21, 1995
5393385 Separation of hexane from vinyl acetate and methyl acrylate by extractive distillation Feb. 28, 1995
5391264 Separation of alpha-Phellandrene from d-limonene by azeotropic distillation Feb. 21, 1995
5382330 Separation of 1-octene from octane by azeotropic distillation Jan. 17, 1995
5380405 Separation of alpha-phellandrene from 3-carene by azeotropic distillation Jan. 10, 1995
5277766 Separation of n-heptane from vinyl acetate by extractive distillation Jan. 11, 1994
5262015 Separation of octene-1 from its isomers by azeotropic and extractive distillation Nov. 16, 1993
5258102 Separation of heptane from vinyl acetate by azeotropic distillation Nov. 2, 1993
5256259 Separation of hexane from vinyl acetate by azeotropic distillation Oct. 26, 1993
5238540 Method of obtaining a pure aromatic hydrocarbon from a sump product of an extractive distillation of a hydrocarbon mixture Aug. 24, 1993
5236559 Separation of hexane from vinyl acetate and methyl acrylate by extractive distillation Aug. 17, 1993
5167797 Removal of sulfur contaminants from hydrocarbons using N-halogeno compounds Dec. 1, 1992
5157202 Gas absorption for separation of hydrocarbons Oct. 20, 1992
5068011 Separation of monoolefins from paraffins Nov. 26, 1991
4851087 Separation of m-diisopropylbenzene from p-diisopropyl benzene by azeotropic distillation with nitrogenous compounds Jul. 25, 1989
4299667 Process for recovering pure benzene Nov. 10, 1981
4278504 Isolation of a conjugated diolefin from a C.sub.4 - or C.sub.5 -hydrocarbon mixture Jul. 14, 1981
4278505 Process of recovering an n-hexane product which is free from aromatic compounds Jul. 14, 1981
4277315 Isolation of a conjugated diolefin from a C.sub.4 - or C.sub.5 -hydrocarbon mixture Jul. 7, 1981
4177250 Method of removing acetylene and sulfur compounds from gases by absorption in dimethyl formamide Dec. 4, 1979
4168209 Process for purifying benzene and toluene by extractive azeotropic distillation Sep. 18, 1979
4143085 Method for isolating low molecular weight polymer Mar. 6, 1979
4122126 Method for removing aluminum halide catalyst from polymerization product Oct. 24, 1978
4070410 Method of isolating individual normal alkanes from petroleum stock Jan. 24, 1978
4070409 Process for recovering anthracene Jan. 24, 1978
3953300 Process for separating a high purity vinyl aromatic hydrocarbon from hydrocarbon mixtures containing the same Apr. 27, 1976











 
 
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