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| Number | Title | Issue Date |
| 8163856 | Method and system to add high shear to improve an ionic liquid catalyzed chemical reaction In an embodiment, a method is disclosed to increase the activity of an ionic liquid catalyst comprising emulsifying the ionic liquid catalyst with one or more liquid components. In an embodiment, a method is disclosed comprising introducing into a reaction zone a mo... | 04/24/2012 |
| 8043991 | Selective isomerization of olefins to alkenes using a mesoporous catalyst A process for selectively making 2-alkenes from a NAO using a mesoporous catalyst that has been surface modified with a Brönsted acid compound. The Brönsted acid compound has a reactive silane connector, an organic linking group, and a Brönsted acid group. The me... | 10/25/2011 |
| 7994376 | Olefin oligomerization Provided is a method of oligomerizing alpha olefins. In an embodiment, an oligomerization catalyst system is contacted in at least one continuous reactor with a feed comprising olefins; an effluent comprising product olefins having at least four carbon atoms is with... | 08/09/2011 |
| 7951889 | Method and system to add high shear to improve an ionic liquid catalyzed chemical reaction In an embodiment, a method is disclosed to increase the activity of an ionic liquid catalyst comprising emulsifying the ionic liquid catalyst with one or more liquid components. In an embodiment, a method is disclosed comprising introducing into a reaction zone a mo... | 05/31/2011 |
| 7910670 | Methods of preparation of an olefin oligomerization catalyst A method of making an olefin oligomerization catalyst, comprising contacting a chromium-containing compound, a heteroatomic ligand, and a metal alkyl, wherein the chromium-containing compound comprises less than about 5 weight percent chromium oligomers. A method of... | 03/22/2011 |
| 7902415 | Processes for dimerizing or isomerizing olefins A process for dimerizing alpha olefins comprising contacting (i) an alpha olefin having at least 3 carbon atoms, (ii) a hexadentate bimetallic catalyst, and (iii) a cocatalyst, and dimerizing the alpha olefin in a reaction zone at conditions effective to dimerize an... | 03/08/2011 |
| 7449104 | Integrated catalytic cracking and desulfurization system An integrated fluid catalytic cracking (FCC) and desulfurization system for processing hydrocarbon-containing fluids. The integrated system employs a cracking/desulfurization unit having a reactor, a regenerator, and a reducer. A mixture of solid FCC catalyst partic... | 11/11/2008 |
| 7285582 | Modified latex drag reducer and processes therefor and therewith A modified latex drag reducer and methods of making and using the drag reducer in order to reduce friction losses resulting from turbulent fluid flow through a conduit. Particularly, the modified latex drag reducer is formed from an initial latex which is a product ... | 10/23/2007 |
| 6939902 | Drag-reducing polymer suspensions A hydrocarbon-soluble drag-reducing suspension is described, along with a process for manufacturing the drag-reducing suspension. The drag-reducing suspension is easily transportable, non-hazardous, easily handled, and provides a significant increase in drag-reducin... | 09/06/2005 |
| 6890877 | Enhanced fluid/solids contacting in a fluidization reactor A system for enhancing fluid/solids contacting in a fluidization reactor by controlling the particle size distribution of the solid particulates in the reactor. ... | 05/10/2005 |
| 6878669 | Desulfurization and sorbent The attrition resistance of sorbent compositions are enhanced by acid-treating the perlite component of the sorbent. The efficiency of making a promoter metal-containing sorbent composition is enhanced using a novel method for incorporating the promoter metal into t... | 04/12/2005 |
| 6869522 | Desulfurization process In a desulfurization process for the removal of organosulfur compounds from a hydrocarbon fluid stream such as cracked-gasoline or diesel fuel wherein a bifunctional sorbent system is employed, surface treatment of the bifunctional sorbent during the use of same for... | 03/22/2005 |
| 6864215 | Sorbents for desulfurization Attrition resistant, sorbent compositions for the removal of elemental sulfur and sulfur compounds, such as hydrogen sulfide and organic sulfides, from cracked-gasoline and diesel fuels are prepared by the impregnation of a sorbent support comprising zinc oxide, exp... | 03/08/2005 |
| 6803343 | Desulfurization and novel sorbent for same A sorbent composition comprising a support and a reduced-valence noble metal can be used to desulfurize a hydrocarbon-containing fluid such as cracked-gasoline or diesel fuel. ... | 10/12/2004 |
| 6765053 | Drag-reducing polymer suspensions A drag-reducing polymer suspension is described, along with a method for manufacturing the drag-reducing polymer suspension. The drag-reducing suspension is easily transportable, non-hazardous, and easily handled. The drag-reducing suspension is manufactured by grin... | 07/20/2004 |
| 6649555 | Reactivation of deactivated sorbents A deactivated sorbent composition is reactivated by contacting the deactivated sorbent with a reducing stream under activation conditions sufficient to reduce the amount of sulfates associated with the sorbent composition.... | 11/18/2003 |
| 6635795 | Desulfurization with improved sorbent regeneration While contacting under regeneration conditions an oxygen-containing stream with a sorbent comprising a promoter metal and zinc sulfide which has been sulfurized by contact with sulfur-containing hydrocarbons such as cracked-gasolines and diesel fuel, the ... | 10/21/2003 |
| 6544410 | Desulfurization with improved sorbent regeneration During the regeneration of a sulfurized sorbent comprising zinc aluminate, a promoter metal and zinc sulfide by contact with an oxygen-containing stream to convert at least a portion of said zinc sulfide to zinc oxide the average sulfur dioxide partial pr... | 04/08/2003 |
| 6531053 | Desulfurization process and novel bimetallic sorbent systems for same Novel sorbent systems for the desulfurization of cracked-gasoline are provided which are comprised of a bimetallic promotor on a particulate support such as that formed of zinc oxide and an inorganic or organic carrier. Such bimetallic promotors are forme... | 03/11/2003 |
| 6482314 | Desulfurization for cracked gasoline or diesel fuel Particulate sorbent compositions comprising a mixture of zinc oxide, silica, alumina and a substantially reduced valence cobalt are provided for the desulfurization of a feedstream of cracked-gasoline or diesel fuels in a desulfurization zone by a process... | 11/19/2002 |
| 6428685 | Desulfurization and novel sorbents for same Particulate sorbent compositions which are suitable for the removal of sulfur from streams of cracked-gasoline or diesel fuel are provided which have increased porosity, improved resistance to deactivation through the addition of a calcium compound select... | 08/06/2002 |
| 6429170 | Sorbents for desulfurizing gasolines and diesel fuel Attrition resistant, sorbent compositions for the removal of elemental sulfur and sulfur compounds, such as hydrogen sulfide and organic sulfides, from cracked-gasoline and diesel fuels are prepared by the impregnation of a sorbent support comprising zinc... | 08/06/2002 |
| 6204346 | Polymerization process Polymerization processes for ethylene and at least one mono-1-olefin comonomer having from about three to eight carbon atoms per molecule in the presence of a twice-aged catalyst system comprising chromium supported on a silica-titania support and a trial... | 03/20/2001 |
| 6174981 | Polymerization process Polymerization processes for ethylene and at least one mono-1-olefin comonomer having from about three to eight carbon atoms per molecule in the presence of a catalyst system comprising chromium supported on a silica-titania support and a trialkylboron co... | 01/16/2001 |
| 6162884 | Olefin oligomerization and processes thereof Novel catalyst systems which comprise 2-pyridine carboxaldimine nickel dihalide complexes can be used with an organoaluminum cocatalyst in slurry oligomerization or polymerization processes to oligomerize or polymerize mono-1-olefins and, optionally a hig... | 12/19/2000 |
| 6150295 | Polymerization catalysts and processes therefor Novel catalyst systems which comprise pyridine-2-carboxaldimine nickel complexes can be used with methylaluminoxane in slurry polymerization processes to polymerize mono-1-olefins and, optionally a higher alpha-olefin comonomer, to produce low molecular w... | 11/21/2000 |
| 6037433 | Olefin polymerization processes and products thereof A novel loop/slurry olefin polymerization process is provided which produces ultra high molecular weight ethylene homopolymer.... | 03/14/2000 |
| 6034186 | Olefin polymerization processes and products thereof A novel loop/slurry olefin polymerization process is provided which produces ultra high molecular weight ethylene homopolymer.... | 03/07/2000 |
| 5932670 | Polymerization catalysts and processes therefor Novel catalyst systems which comprise 2-pyridine carboxaldimine nickel dihalide complexes can be used with an organoaluminum cocatalyst in slurry oligomerization or polymerization processes to oligomerize or polymerize mono-1-olefins and, optionally a hig... | 08/03/1999 |
| 5919996 | Olefin production A process is provided to modify an olefin production catalyst system which comprises contacting an olefin production catalyst system with ethylene prior to use. A process also is provided to trimerize and/or oligomerize olefins with the novel, modified ol... | 07/06/1999 |
| 5866661 | Ethylene polymerization processes and products thereof A process to control the heat transfer coefficient in slurry olefin polymerization processes comprising shocking the polymerization reactor is provided. This shock comprises quickly decreasing and then restoring to normal operating conditions, the higher ... | 02/02/1999 |
| 5859303 | Olefin production A process is provided to trimerize or oligomerize olefins in the presence of an olefin oligomerization catalyst and a solvent which is a product of the olefin oligomerization process.... | 01/12/1999 |
| 5856257 | Olefin production A process is provided to modify an olefin production catalyst system which comprises contacting an olefin production catalyst system with ethylene prior to use. A process also is provided to trimerize and/or oligomerize olefins with the novel, modified ol... | 01/05/1999 |
| 5814575 | Chromium compounds and uses thereof Novel chromium-containing compounds, such as, for example, chromium pyrrolides, are prepared by forming a mixture of a chromium salt, a metal amide, and an electron pair donor solvent, such as, for example, an ether. These novel chromium-containing, or ch... | 09/29/1998 |
| 5786431 | Process for olefin polymerization Novel chromium-containing compounds are prepared by forming a mixture of a chromium salt, a metal amide, and an ether. These novel chromium-containing, or chromium pyrrolide, compounds, with a metal alkyl and an unsaturated hydrocarbon, can be used as a c... | 07/28/1998 |
| 5763723 | Chromium compounds and uses thereof Novel chromium-containing compounds, such as, for example, chromium pyrrolides, are prepared by forming a mixture of a chromium salt, a metal amide, and an electron pair donor solvent, such as, for example, an ether. These novel chromium-containing, or ch... | 06/09/1998 |
| 5689028 | Process to regulate olefin production by catalyst system inhibition A process is provided to inhibit trimerization catalyst system activity which comprises the sequential steps of contacting a reactor effluent stream with alcohol; removing any desired olefin products; adding an aqueous base to the non-olefin portion; remo... | 11/18/1997 |
| 5648439 | Process for producing polyolefins A process is provided to produce polyolefins having a multimodal molecular weight distribution at the molecular level by contacting at least one mono-1-olefin in a polymerization zone, under polymerization conditions, with two different types of supported... | 07/15/1997 |
| 5624877 | Process for producing polyolefins A process is provided to produce polyolefins having a multimodal molecular weight distribution at the molecular level by contacting at least one mono-1-olefin in a polymerization zone, under polymerization conditions, with two different types of supported... | 04/29/1997 |
| 5563312 | Olefin production A process is provided to stabilize and/or reactivate an olefin production catalyst system which comprises contacting an olefin production catalyst system, either before or after use, with an aromatic compound.... | 10/08/1996 |
