Patents Represented by Attorney Leandro Arechederra, III
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Patent number: 8288595Abstract: Embodiments of the invention disclosed herein relate to a process for the production of a C6-C15 alcohol mixture comprising the steps of: hydroformylating an olefin mixture comprising a branched C5-C14 olefin to form a hydroformylation product comprising aldehydes and formate esters, whereby the hydroformylation product has a net cold sap number from 15 to 38 mg KOH/g, and converting the aldehydes and formate esters to alcohols in a hydrogenation step comprising at least one first hydrogenation reactor comprising a fixed bed of a heterogeneous sulphided bimetallic catalyst.Type: GrantFiled: February 21, 2012Date of Patent: October 16, 2012Assignee: ExxonMobil Chemical Patents Inc.Inventors: Eddy Van Driessche, Jean-Jacques G. Muls, Arie Van Vliet, Carl R. Beck, Charles M. Yarbrough
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Patent number: 8288596Abstract: Acetals are formed from an aldehyde hydrogenation product mixture comprising alcohols and at most 2% of alde-hydes and the product is distilled to yield purified alcohols and a second stream containing acetals and/or unsaturated ethers.Type: GrantFiled: February 27, 2008Date of Patent: October 16, 2012Assignee: ExxonMobil Chemical Patents Inc.Inventors: Ronald Dean Garton, Corey W. Reed, Krishna Kulai Rao, Bruce D. Lilly, Ramzi Yanni Saleh, Raphael Frans Caers
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Patent number: 8283411Abstract: Esters of cyclohexane polycarboxylic acids are used as plasticizers for polyvinyl chloride to enable products with comparable mechanical properties to be obtained using less polyvinyl chloride. Use of these esters also produces formulations with increased stability to ultra-violet light, improved low temperature properties, lower viscosity and improved processability as well as reduced smoke on burning. The esters of cyclohexane polycarboxylic acids may be used alone or in admixture with other plasticizers when the esters of cyclohexane polycarboxylic acids may act as viscosity depressants. Fast fusing plasticizers may also be included. The formulations are particularly useful in the production of a range of goods from semi-rigid to highly flexible materials and are particularly useful in the production of medical materials such as blood bags and tubing.Type: GrantFiled: November 21, 2011Date of Patent: October 9, 2012Assignee: ExxonMobil Chemical Patents Inc.Inventors: Claudius Gosse, Thomas Marshall Larson, Pierre Jean Paul Legrand, Raphael Frans Caers, Paul H Daniels, Allen D. Godwin, Didier Naert
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Patent number: 8203017Abstract: A process for hydrogenating benzenepolycarboxylic acids or derivatives thereof, such as esters and/or anhydrides, is provided.Type: GrantFiled: January 13, 2011Date of Patent: June 19, 2012Assignee: ExxonMobil Chemical Patents Inc.Inventors: Richard Henry Schlosberg, Jose Guadalupe Santiesteban, Stuart L. Soled, Andrzej Mariusz Malek, Joseph E. Baumgartner, Luo Shifang, Sabato Miseo, James Clarke Vartuli
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Patent number: 8049043Abstract: Mixed butene streams containing butene-1 and isobutylene and optionally butene-2 are hydroformylated under conditions that hydroformylates all the monomers to yield a mixture of valeraldehydes.Type: GrantFiled: February 17, 2011Date of Patent: November 1, 2011Assignee: ExxonMobil Chemical Patents Inc.Inventors: Raphael F. Caers, Eddy Theophile Van Driessche, Hubertus J. Beckers, Luc Roger Mare Martens, Georges Marie Mathys, John Richard Shutt
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Patent number: 7919649Abstract: Esters produced by the catalyzed reaction of alcohols and acids or anhydrides are neutralized by treatment with an aqueous alkaline alkali metal salt solution in an amount that provides less than a stoichiometric amount of alkali metal salt in relation to the acidity of the crude ester and the amount of water present during the treatment is from 0.7 to 1.4 wt % of water based on the weight of crude ester. When using titanium as the esterification catalyst, the ester resulting from this process contains less than 0.01 ppm by weight of titanium residue, so that it is storage stable when stored in the presence of an antioxidant.Type: GrantFiled: April 5, 2006Date of Patent: April 5, 2011Assignee: ExxonMobile Chemical Patents Inc.Inventors: Brady Compton, John Lyford, IV, Nicolaas A. De Munck, Aad Gerrit Oskam, Allen D. Godwin, Leendert Johannes Van Dop
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Patent number: 7910782Abstract: In a hydroformylation reaction, the circulation and recovery of cobalt carbonyl in a cobalt catalyst cycle using carbonylate as an intermediate and acidification thereof, is improved by supplying an aqueous sulfuric acid solution containing less than 16% wt of sulfuric acid to the carbonylate to control sulfuric acid concentration in the carbonylate/acid mixture, before accounting for any acid consuming reaction, to a value of from 2% to 10% by weight. Single step and multistage liquid/liquid extraction techniques as well as vapor/liquid extraction techniques followed by the absorption of cobalt from the vapor in an organic liquid both benefit from this improvement.Type: GrantFiled: March 28, 2008Date of Patent: March 22, 2011Assignee: ExxonMobil Chemical Patents Inc.Inventors: Eddy T. A. Van Driessche, Arie Van Vliet, Raphael Frans Caers, Hubertus Joseph Beckers, Ronald Dean Garton, Bertrand Raymond Da Cruz, Michel J. P. Lepagnol, Edwin Kooke
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Patent number: 7776977Abstract: The present invention relates to a supported catalyst composition and a method for making the supported catalyst composition and its use in a process for polymerizing olefin(s). In particular, the invention is directed to a method for making a supported catalyst composition by contacting a supported activator with a bulky ligand and a metal compound.Type: GrantFiled: January 14, 2005Date of Patent: August 17, 2010Assignee: Univation Technologies, LLCInventor: Sun-Chueh Kao
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Patent number: 7754840Abstract: The present invention is directed to a bimodal polyethylene comprising ethylene derived units and units derived from at least one of a C4 to C12 olefin; wherein the polyethylene has a density of from 0.940 to 0.970 g/cm3; an I21/I2 of 80 or more; a residual Group 4 metal content of 2.0 ppm or less: a Mw/Mn of from 20 to 60; and wherein the polyethylene comprises a high molecular weight component and a low molecular weight component, the high molecular weight component present from 40 to 60 weight percent based on the total polyethylene, and wherein the bimodal polyethylene has a weight avenge molecular weight Mw of 180,000 a.m.u. or more.Type: GrantFiled: August 6, 2003Date of Patent: July 13, 2010Assignee: Univation Technologies, LLCInventors: Donald R. Loveday, David H. McConville, John F. Szul, Kersten Anne Erickson, Simon Mawson, Tae Hoon Kwack, Frederick J. Karol, David James Schreck
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Patent number: 7718566Abstract: A catalyst composition and method for olefin polymerization are provided. In one aspect, the catalyst composition is represented by the formula ?a?b?gMXn wherein M is a metal; X is a halogenated aryloxy group; ? and ? are groups that each comprise at least one Group 15 atom; ? is a linking moiety that forms a chemical bond to each of ? and ?; and a, b, g, and n are each integers from 1 to 4.Type: GrantFiled: November 25, 2008Date of Patent: May 18, 2010Assignee: Univation Technologies, LLCInventors: Timothy T. Wenzel, Zondra Dee Dixon
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Patent number: 7683140Abstract: In some embodiments, a method including the steps of monitoring a polymerization reaction which produces a polymer resin in a fluid bed reactor, where a dry melt reference temperature is characteristic of melting behavior of a dry version of the resin, and in response to data indicative of at least one monitored parameter of the reaction, determining a reduced melt reference temperature that is at least substantially equal to the difference between the dry melt reference temperature and a temperature by which the dry melt reference temperature is depressed by the presence of condensable diluent gas with the resin in the reactor. Optionally, the method also includes the step of controlling the reaction in response to the reduced melt reference temperature or a stickiness parameter determined from the reduced melt reference temperature.Type: GrantFiled: November 14, 2006Date of Patent: March 23, 2010Assignee: Univation Technologies, LLCInventors: Richard B. Pannell, Robert O. Hagerty, Eric J. Markel
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Patent number: 7595364Abstract: Multimodal polyethylenes possessing a density from 0.940 to 0.965 g/cm3, and an I21 from 4 to 20 dg/min, and comprising a low molecular weight ethylene copolymer having a weight average molecular weight from 5,000 amu to 50,000 amu; and a high molecular weight ethylene copolymer having a weight average molecular weight from 60,000 amu to 800,000 amu, both components having a desirable balance of short chain branching making the multimodal polyethylene suitable for films, pipes, rotomolding applications and blow molding applications.Type: GrantFiled: December 7, 2005Date of Patent: September 29, 2009Assignee: Univation Technologies, LLCInventors: Porter Clarke Shannon, Fred D. Ehrman
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Patent number: 7582715Abstract: The invention relates to new polymerization processes including diluents including hydrofluorocarbons and their use to produce novel polymers substantially free of long chain branching. In particular, the invention relates to copolymers of an isoolefin, preferably isobutylene, and a multiolefin, preferably a conjugated diene, more preferably isoprene, substantially free of long chain branching.Type: GrantFiled: December 19, 2003Date of Patent: September 1, 2009Assignee: Exxonmobil Chemical Patents Inc.Inventors: Scott Thomas Milner, Timothy Daniel Shaffer, David Yen-Lung Chung
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Patent number: 7560516Abstract: Disclosed are various compositions, including but not limited to a high density multimodal polyethylene composition, that has a density of 0.935 g/cc or more, and that includes a blend of a first polyethylene component and a second polyethylene component, in which: the first polyethylene component includes a bimodal polyethylene; and the second polyethylene component includes a unimodal polyethylene that is made from a polymerization conducted in the presence of a metallocene having two cyclopentadienyl rings.Type: GrantFiled: September 13, 2007Date of Patent: July 14, 2009Assignee: Univation Technologies, LLCInventor: Tae Hoon Kwalk
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Patent number: 7507780Abstract: The present invention relates to a continuous gas phase process comprising polymerizing one or more hydrocarbon monomer(s) in a fluidized bed reactor in the presence of a Ziegler-Natta-type catalyst system and a condensable fluid for a period of at least 12 hours where the bed temperature is less than the Critical Temperature and the dew point temperature of the gas composition in the reactor is within 25° C. of the bed temperature.Type: GrantFiled: October 17, 2007Date of Patent: March 24, 2009Assignee: Univation Technologies, LLCInventors: Robert O. Hagerty, Kevin B. Stavens, Marc L. DeChellis, D. Brett Fischbuch, James M. Farley
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Patent number: 7504464Abstract: A gas phase polymerization process comprising: (1) preparing a solution of a catalyst precursor comprising a mixture of magnesium and titanium compounds, an electron donor and a solvent; (2) adding a filler to the solution from step (1) to form a slurry; (3) spray drying the slurry from step (2) at a temperature of 100 to 140° C. to form a spray dried precursor, (4) slurring the spray dried precursor from step (3) in mineral oil, (5) partially or fully pre-activating the catalyst precursor by contacting the slurry of (4) with one or more Lewis Acids, and (6) transferring the partially or fully activated precursor from step (5) into a gas phase reactor in which an olefin polymerization reaction is in progress.Type: GrantFiled: April 7, 2004Date of Patent: March 17, 2009Assignee: Univation Technologies, LLCInventors: Stephanie M. Whited, Michael D. Turner, Michael A. Kinnan, Robert J. Jorgensen
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Patent number: 7504463Abstract: The present invention is directed to the use of aluminum alkyl activators and co-catalysts to improve the performance of chromium-based catalysts. The aluminum alkyls allow for the variable control of polymer molecular weight, control of side branching while possessing desirable productivities, and may be applied to the catalyst directly or separately to the reactor. Adding the alkyl aluminum compound directly to the reactor (in-situ) eliminates induction times.Type: GrantFiled: August 11, 2005Date of Patent: March 17, 2009Assignee: Univation Technologies, LLCInventors: Kevin J Cann, Minghui Zhang, Jose Fernando Cevallos-Candau, John Moorhouse, Mark Gregory Goode, Daniel Paul Zilker, Jr., Maria Apecetche
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Patent number: 7504055Abstract: Disclosed herein are various processes, including a process for producing a film, comprising (including) forming a film from a blended polyolefin composition at a line speed of at least 170 feet per minute, wherein the blended polyolefin composition comprises: (a) a bimodal polyethylene component that includes a high molecular weight polyethylene component having a high average molecular weight (MWHMW) and a low molecular weight polyethylene component having a low average molecular weight (MWLMW), wherein the ratio of the high average molecular weight to the low average molecular weight (MWHMW:MWLMW) is 20 or more wherein the high and low molecular weight polyethylene components of the bimodal polyethylene component are formed in a single reactor; and (b) a unimodal polyethylene component that occupies more than 15 wt % of the composition.Type: GrantFiled: October 31, 2007Date of Patent: March 17, 2009Assignee: Univation Technologies, LLCInventor: Tae Hoon Kwalk
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Patent number: RE41785Abstract: The present invention relates to a Group 15 containing metal catalyst compound having a substituted hydrocarbon leaving group, a catalyst system and a supported catalyst system thereof and to a process for polymerizing olefin(s) utilizing them.Type: GrantFiled: February 12, 2004Date of Patent: September 28, 2010Assignee: Univation Technologies, LLCInventor: David H. McConville
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Patent number: RE41897Abstract: Catalyst compositions and methods, useful in polymerization processes, utilizing at least two metal compounds are disclosed. At least one of the metal compounds is a Group 15 containing metal compound and the other metal compound is preferably a bulky ligand metallocene-type catalyst. The invention also discloses a new polyolefin, generally polyethylene, particularly a multimodal polymer and more specifically, a bimodal polymer, and its use in various end-use applications such as film, molding and pipe.Type: GrantFiled: January 20, 2004Date of Patent: October 26, 2010Assignee: Univation Technologies, LLCInventors: Donald R. Loveday, David H. McConville, John F. Szul, Kersten Anne Terry, Simon Mawson, Tae Hoon Kwalk, Frederick J. Karol, David James Schreck