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| Number | Title | Issue Date |
| 7554001 | Trimerisation and oligomerisation of olefins using a chromium based catalyst The invention provides a mixed heteroatomic ligand for an oligomerization of olefins catalyst, which ligand includes at least three heteroatoms, of which at least one heteroatom is sulfur and at least two heteroatoms are not the same. The invention also provides a m... | 06/30/2009 |
| 7414164 | Diisobutylene process This invention is a process for producing diisobutylene from isobutylene. The process comprises first forming dry sulfonic acid resin by contacting water wet sulfonic acid resin catalyst with a first reaction feed comprising isobutylene under conditions effective to... | 08/19/2008 |
| 7320745 | Energy efficient method for exothermic reactions An energy efficient process scheme for a highly exothermic reaction-distillation system in which the reactor is external to the distillation column and the feed to the reactor is a mixture of at least one liquid product stream from the distillation column with or wi... | 01/22/2008 |
| 7291759 | Oligomerization of alkenes in a plurality of successive heterogeneous catalyst zones Process for oligomerizing an alkene stream over a solid catalyst comprising sulfur and nickel, in which the oligomerization is carried out in two or more successive catalyst zones and the molar ratio of sulfur to nickel in the first catalyst zone is less than 0.5 an... | 11/06/2007 |
| 7273957 | Process for the production of gasoline stocks A process for the production of gasoline stocks wherein lower molecular weight olefins are first oligomerized and the oligomers then hydrogenated. In the first instance the oligomerization is carried out in a single pass fixed bed boiling point reactor. The oligomer... | 09/25/2007 |
| 7259285 | Oligomerization catalyst, a method for production and the use thereof An oligomerization catalyst for olefins having from 2 to 6 carbon atoms is produced by treating aluminum oxide with a nickel compound and a sulfur compound, either simultaneously or firstly with the nickel compound an then with the sulfur compound, and subsequently ... | 08/21/2007 |
| 7232848 | Gas agitated multiphase reactor with stationary catalyst solid phase An apparatus for converting a gaseous and/or liquid feed fluid to gaseous and/or liquid products using a solid catalyst comprises a reactor, a liquid phase disposed within the reactor volume, a fixed catalyst at least partially disposed in the liquid phase, a coolin... | 06/19/2007 |
| 7201839 | Desulfurization and novel compositions for same A composition comprising a metal oxide, a silica-containing material, a gallium-containing material, an aluminum-containing material, and a promoter, wherein at least a portion of the promoter is present as a reduced-valence promoter and methods of preparing such co... | 04/10/2007 |
| 7161053 | Oligomerization of isobutene in N-butenic hydrocarbon streams Isobutene in isobutenic hydrocarbon mixtures is oligomerized over a solid acidic ion exchange resin, said acidic ion exchange resin containing, for example, sulfonic acid groups, some of whose protons have been exchanged for metal ions. ... | 01/09/2007 |
| 7145049 | Oligomerization process Alkenes, such as normal butenes in a mixed C4 stream are oligomerized, preferably to dimers, which are dimerized in a distillation column reactor over ZSM-57 zeolite catalyst at high conversions and high selectivity to octenes. Prior to oligomerization th... | 12/05/2006 |
| 7081557 | Method for the oligomerization of olefins using a cycloalkylalkyl-substituted triazacyclohexane Disclosed is a method for the oligomerization of olefins, wherein an olefin is brought into contact with a catalyst system that is obtained from a chromium source, a cycloalkylalkyl-substituted triazacyclohexane, especially a 1,3,5-tris-(cycloalkylalkyl)-1,3,5-triaz... | 07/25/2006 |
| 7038101 | Method for product separation and purification in iso-butylene dimerization process A method for operating a dimerization reactor that receives a hydrocarbon feed and produces an output stream comprising a light hydrocarbon component, a dimer and an alcohol component comprises: (a) separating the first output stream into a top stream containing the... | 05/02/2006 |
| 7012167 | Diisobutylene process This invention is a process for producing diisobutylene from isobutylene. The process comprises first oligomerizing isobutylene to diisobutylene using a sulfonic acid-type ion exchange resin. The oligomerization step is followed by contacting the diisobutylene produ... | 03/14/2006 |
| 7002053 | Method for preparing high-purity diisobutene The invention relates to a process for preparing high-purity diisobutene by reaction of isobutene or isobutene-containing hydrocarbon mixtures over a solid acidic ion-exchange resin containing sulfonic acid groups whose protons have been partly replaced by metal ion... | 02/21/2006 |
| 6951831 | Catalyst composition for dimerizing, co-dimerizing, oligomerizing and polymerizing olefins A catalyst composition for use in dimerizing, co-dimerizing or oligomerizing olefins comprises: at least one zero-valent nickel complex; at least one acid with formula H+X− in which Xâˆ... | 10/04/2005 |
| 6927313 | Process for the selective oligomerization of ethylene Process for the selective oligomerization of ethylene to give α-olefins essentially consisting of C4 to C8, characterized in that it is carried out in the presence of a catalytic system comprising the complex having general formula (II): (L)M(... | 08/09/2005 |
| 6900152 | Catalyst for trimerization of ethylene and process for trimerizing ethylene using the catalyst A catalyst used for trimerization of ethylene into 1-hexene is descrobed, which comprises (i) a specific organometallic complex having a neutral multidentate ligand having a tripod structure, (ii) an alkylaluminoxane, and an optional ingredient selected from: (iii) ... | 05/31/2005 |
| 6875900 | Upflow oligomerization reaction process An oligomerization process for the production of higher aliphatic olefins is disclosed. In the process, a liquid oligomerization feed stream comprising lighter aliphatic olefins is passed to a reactor vessel. The liquid oligomerization feed stream is transported upw... | 04/05/2005 |
| 6743960 | Method for oligomerizing olefins to form higher olefins using sulfur-containing and sulfur-tolerant catalysts The present invention is related to a method for oligomerizing olefinic monomers under oligomerization conditions to form higher olefins. The novel method comprises contacting a feed comprising the olefinic monomers with a catalyst composition comprising the reactio... | 06/01/2004 |
| 6613108 | Process for producing a fuel component The invention relates to process for dimerizing olefinic hydrocarbon feedstock, to hydrocarbon compositions and to fuel components produced by the process. According to the invention, fresh olefinic hydrocarbon feedstock is fed to a reaction zone of a sys... | 09/02/2003 |
| 6593505 | Catalyst of mixed fluorosulfonic acids A catalyst comprising A) a stationary acid component selected from the group consisting of a perfluorinated ion exchange polymer on an inert support, a silane modified perfluorosulfonic acid, and a sulfated metal oxide; and B) a mobile acid component sele... | 07/15/2003 |
| 6500999 | Process for the production of hydrocarbons with a high octane number by means of the selective dimerization of isobutene with acid catalysts A process is described for the production of hydrocarbons with a high octane number starting from hydrocarbon cuts containing isobutene by means of selective dimerization with acid catalysts, characterized in that the dimerization reaction is carried out ... | 12/31/2002 |
| 6459005 | Ethylene/-olefin copolymer, method for producing the same, and use thereof The present invention intends to provide an ethylene/-olefin copolymer of specific structure, exhibiting excellent performance as a lubricant oil additive, capable of having various functional groups in high ratio, and serviceable as raw material f... | 10/01/2002 |
| 6420305 | Solid acid catalyst, method for producing the same and reaction method using the same A method for producting a solid acid catalyst is provided which produces a shaped material of a solid acid catalyst containing a sulfureous component but have a high activity and having a practically sufficient handleability and mechanical strength involv... | 07/16/2002 |
| 6399843 | Upflow oligomerization reaction process An oligomerization process for the production of higher aliphatic olefins is disclosed. In the process, a liquid oligomerization feed stream comprising lighter aliphatic olefins is passed to a reactor vessel. The liquid oligomerization feed stream is tran... | 06/04/2002 |
| 6384291 | Oligomerization catalyst system and method of making and method of using such catalyst system in the oligomerization of olefins A method of preparing a catalyst system which comprises mixing a first solid material comprising at least one perfluoroalkylsulfonic acid salt with a second solid material comprising at least one silanol comprising hydroxy groups and silicon to form a gel... | 05/07/2002 |
| 6384154 | Preparation of halogen-free, reactive polyisobutene A process for preparing halogen-free, reactive polyisobutene having a terminal double bond content of more than 60 mol % and an average molecular weight Mn of 800-3000 dalton by cationic polymerization in the liquid phase of isobutene over an a... | 05/07/2002 |
| 6376731 | Selective olefin oligomerization A process is provided for the production of a gasoline blending fraction rich in isooctane by the dimerization of isobutylene using tertiary butyl alcohol modifier and lower alkane diluent; advantageously the isobutylene is derived from the dehydration of... | 04/23/2002 |
| 6335473 | Method for conducting exothermic reactions A process for oligomerization of C4 and C5 isoolefins or the etherification thereof with C1 to C6 alcohols wherein the reactants are contacted first in a partial liquid phase reactor (boiling point reactor) with a fixed be... | 01/01/2002 |
| 6281401 | Oligomerization of olefins A process for oligomerizing at least one heavy olefin having at least 5 carbon atoms per molecule in the presence of at least one co-fed light olefin having less than 5 carbon atoms per molecule is disclosed. The presence of the at least one co-fed light ... | 08/28/2001 |
| 6121502 | Process for manufacture of linear alpha-olefins using a titanium component and an organoaluminum halide component A process for the manufacture of linear alpha-olefins is disclosed. The process employs, for the purposes of oligomerizing an unsaturated aliphatic hydrocarbon to linear alpha-olefins, a catalyst mixture comprising titanium aryl and/or titanium alkoxide, ... | 09/19/2000 |
| 6080826 | Template-directed ring-closing metathesis and ring-opening metathesis polymerization of functionalized dienes Functionalized cyclic olefins and methods for making the same are disclosed. Methods include template-directed ring-closing metathesis ("RCM") of functionalized acyclic dienes and template-directed depolymerization of functionalized polymers possessing re... | 06/27/2000 |
| 6043401 | Reactive, low molecular weight, viscous poly(1-olefins) and copoly(1-olefins) and their method of manufacture Catalysts and processes are described to make low molecular weight, essentially terminally-unsaturated, viscous poly(1-olefin) or copoly(1-olefin) having a high terminal vinylidine content from a feed stock containing one or more 1-olefin and other volati... | 03/28/2000 |
| 6011191 | Process for the production of hydrocarbons with a high octane number by the selective dimerization of isobutene A process is described for the production of hydrocarbons with a high octane number starting from hydrocarbon cuts containing isobutene by selective dimerization with acid catalysts characterized in that the dimerization reaction is carried out in the pre... | 01/04/2000 |
| 5962761 | Process for linear alpha-olefin production A process for the continuous oligomerization of ethylene to produce linear alpha olefins by oligomerizing ethylene in a polar phase comprising a solution of transition metal catalyst system at oligomerization conditions including a temperature and pressur... | 10/05/1999 |
| 5945575 | Method of producing reactive halogen-free, polyisobutene A process for the preparation of halogen-free, reactive polyisobutene having a content of terminal double bonds of more than 50 mol % and an average molecular weight Mn of from 500 to 5000 dalton by the cationic polymerization of isobutene or i... | 08/31/1999 |
| 5877372 | Isobutylene oligomerization using isooctane diluent A process is provided for the production of a gasoline blending fraction rich in isooctane by the dimerization of isobutylene using tertiary butyl alcohol modifier and isoalkane diluent; advantageously the isobutylene is derived from the dehydration of te... | 03/02/1999 |
| 5821310 | Organometallic compounds and catalyst compositions There is provided an organometallic compound comprising a metal M of Group 3 to 6 of the Periodic Table or the Lanthanide series and at least one (hetero)cyclohexadienyl ligand of the general formula (I) C5 ARn wherein A is an element cho... | 10/13/1998 |
| 5817905 | Process for the conversion of ethylene into light alpha olefins with the use of additives based on quaternary ammonium salts The invention concerns an improved process for the conversion of ethylene into light alpha olefins wherein the ethylene is brought into contact with a catalyst obtained by mixing a compound of zirconium with an organic compound selected from the class of ... | 10/06/1998 |
| 5744679 | Using water concentration to control ethylene oligomerization Ethylene is effectively oligomerized to linear alpha-olefins using catalyst systems based on transition metal compounds. It has been found that when the reaction is conducted in a polar organic liquid as solvent, incorporation of water into the solvent at... | 04/28/1998 |
