Patents by Inventor Simon Mawson
Simon Mawson has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20020107341Abstract: This invention relates to a process to polymerize olefins comprising reacting olefins with a catalyst system comprising an activator, a metallocene and a second metal compound based on bidentate ligands containing heterocycle moieties.Type: ApplicationFiled: October 10, 2001Publication date: August 8, 2002Inventors: Rex E. Murray, Simon Mawson, John F. Szul, Kersten Anne Erickson, Tae Hoon Kwack, Frederick J. Karol, David James Schreck
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Publication number: 20020103310Abstract: This invention relates to a process to polymerize olefin(s) comprising combining a solution, slurry or solid comprising one or more bulky ligand metallocene catalyst compounds, an optional support, and or one or more activator(s) with a solution comprising one or more phenoxide catalyst compounds, and thereafter, introducing one or more olefin(s) and the combination into a polymerization reactor. This invention also relates to a polymer of ethylene wherein the polymer has a density of 0.910 to 0.930 g/cc, a melt index of 0.3 to 2.0 dg/min, and a 15 to 35 &mgr;m thick film of the polymer has a 45° gloss of 60 or more, a haze of 7% or less, and a dart impact of 600 g or more.Type: ApplicationFiled: December 4, 2000Publication date: August 1, 2002Inventors: John F. Szul, Tae Hoon Kwalk, David James Schreck, Simon Mawson, Matthew G. McKee, Kersten Anne Terry, Mark G. Goode, Gregory T. Whiteker, Eric A. Lucas
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Patent number: 6399722Abstract: This invention relates to methods to introduce multiple catalysts, activators or catalyst systems into a gas phase reactor.Type: GrantFiled: December 1, 1999Date of Patent: June 4, 2002Assignee: Univation Technologies, LLCInventors: John F. Szul, Kersten Anne Erickson, Simon Mawson, David James Schreck, Mark G. Goode, Paul T. Daniell, Matthew G. McKee, Clark C. Williams
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Publication number: 20020065374Abstract: The present invention relates to a method to polymerize monomer comprising contacting one or more monomer(s) with a catalyst system in a gas phase reactor having a recycle system, for removing a recycle gas and unreacted monomer(s) from the reactor and returning the recycle gas and fresh monomer(s) to the reactor, and a plenum, the method comprising the steps of: (a) cooling the recycle gas to form a cooled recycle gas; (b) optionally combining the cooled recycle gas with additional recycle gas; and (c) injecting the cooled recycle gas into the gas phase reactor through the plenum.Type: ApplicationFiled: November 30, 2000Publication date: May 30, 2002Inventors: Simon Mawson, John Francis Szul, Mark Gregory Goode, Clark C. Williams
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Publication number: 20020052453Abstract: 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: ApplicationFiled: May 24, 2001Publication date: May 2, 2002Inventors: 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: 6372868Abstract: This invention relates to a method to introduce multiple catalysts into a gas or slurry phase reactor comprising: (a) introducing one or more olefins and a first catalyst and an activator into the reactor and allowing the olefins to polymerize, (b) obtaining a polyolefin, (c) introducing a second catalyst and an optional activator into the first catalyst/activator composition and thereafter introducing the combination into the reactor and allowing the olefins to polymerize. This invention further relates to a method to introduce multiple catalysts into a gas or slurry phase reactor comprising: (a) introducing one or more olefins, a first catalyst and an activator, and a second catalyst and an optional activator into the reactor, wherein the all the catalysts and activators are combined together prior to being introduced into the reactor.Type: GrantFiled: December 7, 1999Date of Patent: April 16, 2002Assignee: Univation Technologies, LLCInventors: John F. Szul, Kersten Anne Erickson, Simon Mawson, Paul T. Daniell, Mark G. Goode, Matthew G. McKee
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Patent number: 6346584Abstract: The present invention relates to the use of at least one acid and at least one base and/or at least one reductant and at least one oxidant that when used with a polymerization catalyst in a polymerization process results in the controllable generation of a catalyst inhibitor that renders the polymerization catalyst substantially or completely inactive.Type: GrantFiled: September 9, 1999Date of Patent: February 12, 2002Assignee: Univation Technologies, LLCInventors: Timothy T. Wenzel, Dick A. Nagaki, Simon Mawson, David James Schreck, Thomas H. Peterson
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Publication number: 20020013219Abstract: The present invention relates to the use of at least one acid and at least one base and/or at least one reductant and at least one oxidant that when used with a polymerization catalyst in a polymerization process results in the controllable generation of a catalyst inhibitor that renders the polymerization catalyst substantially or completely inactive.Type: ApplicationFiled: August 17, 2001Publication date: January 31, 2002Inventors: Timothy T. Wenzel, Dick A. Nagaki, Simon Mawson, David James Schreck, Thomas H. Peterson
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Patent number: 6340730Abstract: This invention relates to a process to polymerize olefins comprising reacting olefins with a catalyst system comprising an activator, a metallocene and a second metal compound based on bidentate ligands containing heterocycle moieties.Type: GrantFiled: December 6, 1999Date of Patent: January 22, 2002Assignee: Univation Technologies, LLCInventors: Rex E. Murray, Simon Mawson, John F. Szul, Kersten Anne Erickson, Tae Hoon Kwack, Frederick J. Karol, David James Schreck
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Publication number: 20010044508Abstract: 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: ApplicationFiled: May 24, 2001Publication date: November 22, 2001Inventors: 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: 6320002Abstract: This invention relates to a process to polymerize olefins comprising contacting an olefin with a composition comprising the product of the combination of an activator and a transition metal compound provided that if the process occurs in the slurry phase then the activator and the transition metal compound are allowed to react for at least fifteen minutes before being contacted with the olefin.Type: GrantFiled: December 18, 1998Date of Patent: November 20, 2001Assignee: Univation Technologies, LLCInventors: Rex E. Murray, Simon Mawson, Clark C. Williams, James D. Schreck
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Publication number: 20010034297Abstract: This invention relates to an olefin polymerization catalyst composition comprising the product of the combination of at least one activator and at least two different transition metal compounds each of which is represented by the formula:Type: ApplicationFiled: April 26, 2001Publication date: October 25, 2001Inventors: Rex E. Murray, Simon Mawson, Clark C. Williams, D. James Schreck
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Publication number: 20010031697Abstract: This invention relates to an olefin polymerization catalyst composition comprising the product of the combination of an activator, an additive and a transition metal compound which is represented by the formulae:Type: ApplicationFiled: May 29, 2001Publication date: October 18, 2001Inventors: Rex E. Murray, Simon Mawson
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Patent number: 6303719Abstract: This invention relates to an olefin polymerization catalyst composition comprising the product of the combination of an activator, an additive and a transition metal compound which is represented by the formulae: ((Z)XAt(YJ))qMQn where M is a metal selected from Group 3 to 13 or lanthanide and actinide series of the Periodic Table of Elements; Q is bonded to M and each Q is a monovalent, divalent or trivalent anion; X and Y are bonded to M; X and Y are independently carbon or a heteroatom, provided that at least one of X and Y is a heteroatom, preferably both X and Y are heteroatoms; Y is contained in a heterocyclic ring J, where J comprises from 2 to 50 non-hydrogen atoms, Z is bonded to X, where Z comprises 1 to 50 non-hydrogen atoms; t is 0 or 1; when t is 1, A is a bridging group joined to at least one of X, Y or J, q is 1 or 2; n is the oxidation state of M minus q if Q is a monovalent anion, n is (the oxidation state of M−q)/2, if Q is a bivalent anion or n is (the oxidation state of M−q)/Type: GrantFiled: December 18, 1998Date of Patent: October 16, 2001Assignee: Univation TechnologiesInventors: Rex E. Murray, Simon Mawson
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Patent number: 6274684Abstract: 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: October 22, 1999Date of Patent: August 14, 2001Assignee: 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: 6268447Abstract: This invention relates to an olefin polymerization catalyst composition comprising the product of the combination of at least one activator and at least two different transition metal compounds each of which is represented by the formula: ((Z)XAt(YJ))qMQn (I) where M is a metal selected from Group 3 to 13 or lanthanide and actinide series of the Periodic Table of Elements; Q is bonded to M and each Q is a monovalent, divalent or trivalent anion; X and Y are bonded to M; X and Y are independently C or a heteroatom, provided that at least one of X and Y is a heteroatom and Y is contained in a heterocyclic ring J, where J comprises from 2 to 50 non-hydrogen atoms; Z is bonded to X, where Z comprises 1 to 50 non-hydrogen atoms; t is 0 or 1; when t is 1, A is a bridging group joined to at least one of X, Y or J; q is 1 or 2; n is the oxidation state of M minus q if Q is a monovalent anion, n is (the oxidation state of M−q)/2, if Q is a bivalent anion or n is (the oxidation state of M−q)/3Type: GrantFiled: December 18, 1998Date of Patent: July 31, 2001Assignee: Univation Technologies, L.L.C.Inventors: Rex E. Murray, Simon Mawson, Clark C. Williams, D. James Schreck
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Patent number: 6265513Abstract: Polyolefin wherein A) the melt indices of Fractions 1, 4 and 6 of the polyolefin do not vary by more than 20% relative to the mean of Fractions 1, 4 and 6; and/or B) the percent crystallinity of Fractions 1, 4 and 6 of the polyolefin do not vary by more than 6% relative to the mean of Fractions 1, 4 and 6; and/or C) the Mw/Mn of Fractions 1, 4 and 6 of the polyolefin do not vary by more than 20% relative to the mean of Fractions 1, 4 and 6; and/or D) Fraction 1 has an aspect ratio of 0.5-1.5, fraction 4 has an aspect ratio of 1.2 to 4, Fraction 6 has an aspect ratio of about 1.75 to 5 provided that the aspect ratios of the Fractions differ by at least 0.Type: GrantFiled: December 18, 1998Date of Patent: July 24, 2001Assignee: Univation Technologies, LLCInventors: Rex E. Murray, Simon Mawson, Clark C. Williams, James D. Schreck
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Patent number: 6258903Abstract: This invention relates to a process to polymerize olefins comprising reacting olefins with a combined catalyst system comprising a hydrogen generating olefin polymerization catalyst and from 10 ppm to 10 weight % of at least one hydrogen consuming olefin polymerization catalyst system, based upon the weight of the total catalyst present, not including any activators or supports.Type: GrantFiled: December 18, 1998Date of Patent: July 10, 2001Assignee: Univation TechnologiesInventors: Simon Mawson, Mark G. Goode
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Patent number: 5733964Abstract: Heterogeneous polymer mixtures comprising a polymer in liquid or supercritical CO.sub.2 are stabilized by employing a poly(propylene oxide) or poly(butylene oxide) based surfactant. These surfactants are especially well suited for stabilizing heterogeneous polymer mixtures formed by micronizing techniques as well as by precipitation of a compressed fluid antisolvent applications.Type: GrantFiled: June 20, 1996Date of Patent: March 31, 1998Assignees: Board of Regents, The University of Texas System, Air Products and Chemicals, Inc.Inventors: Keith P. Johnston, Steven Paul Wilkinson, Mark Leonard O'Neill, Lloyd Mahlon Robeson, Simon Mawson, Richard Henry Bott, Carrington Duane Smith