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Class Information
Number: 585/518
Name: Chemistry of hydrocarbon compounds > Unsaturated compound synthesis > By addition of entire unsaturated molecules, e.g., polymerization, etc. > With preliminary treatment of feed
Description: Subject matter wherein the feed to polymerization is the effluent from a nonsynthesis treatment, usually a purification treatment, heating treatment, etc.










Sub-classes under this class:

Class Number Class Name Patents
585/519 Removal of hydrocarbon fraction 34


Patents under this class:
1 2

Patent Number Title Of Patent Date Issued
8536398 Method for purifying supply flows containing aromates by means of zeolites Sep. 17, 2013
8471084 Process for increasing weight of olefins Jun. 25, 2013
8440872 Process for preparing poly alpha olefins and lubricant basestocks from Fischer-Tropsch liquids May. 14, 2013
8395007 Diesel and jet fuels based on the oligomerization of butene Mar. 12, 2013
8188327 Isooctene/isooctane process May. 29, 2012
8128879 Apparatus for increasing weight of olefins Mar. 6, 2012
8129485 Integrated hydrocarbons feed stripper and method of using the same Mar. 6, 2012
8119848 Preparation of alkylation feed Feb. 21, 2012
8084557 Gas-phase process for the polymerization of alpha-olefins Dec. 27, 2011
7989668 Lowering nitrogen-containing Lewis bases in molecular sieve oligomerisation Aug. 2, 2011
7989669 Recycle of DME in an oxygenate-to-olefin reaction system Aug. 2, 2011
7956227 Oligomerization of hydrocarbons Jun. 7, 2011
7880046 Low corrosion in zeolite oligomerisation Feb. 1, 2011
7847141 Process for improving gasoline cuts and conversion into gas oils Dec. 7, 2010
7705193 Process for improving gasoline fractions and gasoil conversion with additional treatment to increase the gasoil fraction yield Apr. 27, 2010
7678954 Olefin oligomerization to produce hydrocarbon compositions useful as fuels Mar. 16, 2010
7632976 Low cost selective octene process: RHT-octene Dec. 15, 2009
7601309 Metathesis unit pretreatment process with formation of octene Oct. 13, 2009
7459593 Metathesis unit pretreatment process with formation of octene Dec. 2, 2008
7453019 Conversion process Nov. 18, 2008
7420096 Olefin oligomerization Sep. 2, 2008
7414165 Oligomerization process Aug. 19, 2008
7329788 Process for producing gasoline components Feb. 12, 2008
7309805 Method and system to contact an ionic liquid catalyst with oxygen to improve a chemical reaction Dec. 18, 2007
7273542 Process and apparatus for recovering olefins Sep. 25, 2007
7253330 Oligomerization process Aug. 7, 2007
7238844 Olefin oligomerization Jul. 3, 2007
7183450 Olefin oligomerization Feb. 27, 2007
7153432 Method of purifying Fischer-Tropsch derived water Dec. 26, 2006
7067597 Process of making polypropylene from intermediate grade propylene Jun. 27, 2006
7060865 Recovery of C4 olefins from a product stream comprising C4 olefins, dimethyl ether and C5+ hydrocarbons Jun. 13, 2006
6987152 Feed purification at ambient temperature Jan. 17, 2006
6963018 Integrated processes for olefin and polyolefin production Nov. 8, 2005
6916448 Process for selective production of propylene from hydrocarbon fractions with four carbon atoms Jul. 12, 2005
6884914 Olefin oligomerization Apr. 26, 2005
6841711 Process for making a lube base stock from a lower molecular weight feedstock in a catalytic distillation unit Jan. 11, 2005
6740790 Making an olefin product from an oxygenate May. 25, 2004
6706936 Process for making a lube base stock from a lower molecular weight feedstock Mar. 16, 2004
6686511 Process for making a lube base stock from a lower molecular weight feedstock using at least two oligomerization zones Feb. 3, 2004
6660812 Production of olefin derivatives Dec. 9, 2003
6652737 Production of naphtha and light olefins Nov. 25, 2003
6518473 Dimerizing olefins to make lube base stocks Feb. 11, 2003
6420619 Cracked gas processing and conversion for propylene production Jul. 16, 2002
6358482 Facility for the production of isobutene and propylene from hydrocarbon cuts containing four carbon atoms Mar. 19, 2002
6207115 Process and plant for the conversion of olefinic C4 cuts to polyisobutene and to propylene Mar. 27, 2001
6118037 Process for the removal of contaminant compounds containing one or more heteroatoms of sulfur, nitrogen and/or oxygen from hydrocarbon streams Sep. 12, 2000
6080826 Template-directed ring-closing metathesis and ring-opening metathesis polymerization of functionalized dienes Jun. 27, 2000
6075173 Process for production of isobutene and propylene from hydrocarbon cuts containing four carbon atoms Jun. 13, 2000
5994601 Process for preparing butene oligomers from Fischer-Tropsch olefins Nov. 30, 1999
5981818 Integrated cracking and olefins derivative process utilizing dilute olefins Nov. 9, 1999

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