Patents by Inventor Edmund Carnahan
Edmund Carnahan 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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Patent number: 7999039Abstract: A process of making a polymer is described. The process includes contacting one or more olefinic monomers in the presence of at least a high molecular weight (HMW) catalyst and at least a low molecular weight (LMW) catalyst in a polymerization reactor system; and effectuating the polymerization of the one or more olefinic monomers in the polymerization reactor system to obtain an olefin polymer, wherein the LMW catalyst has an RvL, defined as R v L = [ vinyl ] [ vinyl ] + [ vinylidene ] + [ cis ] + [ trans ] wherein [vinyl] is the concentration of vinyl groups in the olefin polymer produced by the low molecular weight catalyst expressed in vinyls/1,000 carbon atoms; [vinylidene], [cis] and [trans] are the concentration of vinylidene, cis and trans groups in the olefin polymer expressed in the number of the respective groups per 1,000 carbon atoms, of greater than 0.12, and wherein the HMW catalyst has a reactivity ratio, r1 of about 5 or less.Type: GrantFiled: August 16, 2004Date of Patent: August 16, 2011Assignee: Dow Global Technologies LLCInventors: Alexander W. DeGroot, James C. Stevens, Sylvie Y. Desjardins, Jeffrey Weinhold, Edmund Carnahan, David Gillespie, Daniel D. VanderLende
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Publication number: 20080051537Abstract: A supported, heterogeneous catalyst composition for use in polymerization of addition polymerizable monomers to form high molecular weight polymers, comprising: 1) a substrate comprising a solid, particulated, high surface area, surface modified, inorganic oxide compound, 2) a Group 4 metal complex of a bis(hydroxyarylaryloxy) ligand; and optionally 3) an activating cocatalyst for the metal complex.Type: ApplicationFiled: August 9, 2005Publication date: February 28, 2008Inventors: Edmund Carnahan, David Devore, Gregory Godziela, Paul Vosejpka, Burkhard Wagner, Joseph Coalter
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Publication number: 20080021172Abstract: An olefin polymer having greater than 95 percent chain end unsaturation, where greater than 80 percent of said unsaturation comprises a 1,2-disubstituted olefinic unsaturation, especially polymers comprising in polymerized form 4-methyl-1-pentene and more especially highly isotactic polymers, a process of manufacture, methods to functionalize and articles formed therefrom.Type: ApplicationFiled: January 21, 2005Publication date: January 24, 2008Applicant: DOW GLOBAL TECHNOLOGIES, INC.Inventors: John Briggs, Edmund Carnahan, Phillip Hustad, Tia Jackson
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Publication number: 20070167578Abstract: A composition for use in forming a multi-block copolymer, said copolymer containing therein two or more segments or blocks differing in chemical or physical properties, a polymerization process using the same, and the resulting polymers, wherein the composition comprises the admixture or reaction product resulting from combining: (A) a first metal complex olefin polymerization catalyst, (B) a second metal complex olefin polymerization catalyst capable of preparing polymers differing in chemical or physical properties from the polymer prepared by catalyst (A) under equivalent polymerization conditions, and (C) a chain shuttling agent.Type: ApplicationFiled: March 17, 2005Publication date: July 19, 2007Inventors: Daniel Arriola, Edmund Carnahan, Yunwa Cheung, David Devore, David Graf, Phillip Hustad, Roger Kuhlman, Colin Shan, Benjamin Poon, Gordon Roof, James Stevans, Pamela Stirn, Timothy Wenzel
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Publication number: 20070167315Abstract: A composition for use in forming a multi-block copolymer from a single polymerizable monomer, said copolymer containing therein two or more segments or blocks differing in branching index, a polymerization process using the same, and the resulting polymers, wherein the composition comprises the admixture or reaction product resulting from combining: (A) a first olefin polymerization catalyst, (B) a second olefin polymerization catalyst capable of preparing polymers differing in chemical or physical properties from the polymer prepared by catalyst (A) under equivalent polymerization conditions, at least one of catalyst (A) or catalyst (B) being capable of forming a branched polymer by means of chain walking or reincorporation of in situ formed olefinic polymer chains, and (C) a chain shuttling agent.Type: ApplicationFiled: March 17, 2005Publication date: July 19, 2007Inventors: Daniel Arriola, David Devore, Edmund Carnahan, Phillip Hustad, Roger Kuhlman, Timothy Wenzel
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Publication number: 20070105709Abstract: The present invention provides a chemically-modified support comprising an inorganic oxide containing optionally functionalized hydroxyl groups, having chemically linked thereto the cation of a cation/anion pair. The present invention further provides a supported catalyst system comprising the chemically-modified support as described above, and a transition metal compound of Groups 3-10 (preferably a Group 4 metal compound) containing at least one ?-bonded anionic ligand group, said transition metal compound being capable of reacting with the chemically-modified support through the cation of the cation/anion pair to thereby render the transition metal compound catalytically active. The present invention further provides a process for preparing the chemically-modified support of the invention.Type: ApplicationFiled: September 25, 2006Publication date: May 10, 2007Inventors: Edmund Carnahan, David Neithamer
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Publication number: 20060199930Abstract: Embodiments of the invention provide a class of ethylene/?-olefin block interpolymers. The ethylene/?-olefin interpolymers are characterized by an average block index, ABI, which is greater than zero and up to about 1.0 and a molecular weight distribution, Mw/Mn, greater than about 1.3. Preferably, the block index is from about 0.2 to about 1. In addition or alternatively, the block ethylene/?-olefin interpolymer is characterized by having at least one fraction obtained by Temperature Rising Elution Fractionation (“TREF”), wherein the fraction has a block index greater than about 0.3 and up to about 1.0 and the ethylene/?-olefin interpolymer has a molecular weight distribution, Mw/Mn, greater than about 1.3.Type: ApplicationFiled: March 15, 2006Publication date: September 7, 2006Applicant: Dow Global Technologies Inc.Inventors: Colin Li Pi Shan, Lonnie Hazlitt, Yunwa Cheung, Benjamin Poon, Phillip Hustad, Roger Kuhlman, Edmund Carnahan, Xiaohua Qui, Angela Taha
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Publication number: 20050222443Abstract: A process for the preparation of Group 4 metal hydrocarbyl complex the steps of the process comprising contacting a Group 4 metal amide with a neutral source of a monovalent or divalent, Lewis base ligand group and a Lewis acid hydrocarbylating agent under conditions to form a Group 4 metal hydrocarbyl complex.Type: ApplicationFiled: August 13, 2003Publication date: October 6, 2005Inventors: Alexander Vogel, Edmund Carnahan
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Patent number: 6875816Abstract: A polymer composition comprises: (a) a high molecular weight, branched component; and (b) a low molecular weight, branched component. Some polymer compositions are characterized by a substantial absent of amyl or methyl branches and a melt strength (MS) that satisfies the following relationship: MS ? x I 2 + y where x is greater than or equal to about 12.5 and y is greater than or equal to about 3. Some polymers are characterized by a melt strength (MS) that satisfies the following relationship: MS ? x I 2 + y where x is greater than or equal to about 3 and y is greater than or equal to about 4.5 and a molecular weight distribution of greater than 3. A process for making polymers is also disclosed.Type: GrantFiled: March 15, 2002Date of Patent: April 5, 2005Assignee: Dow Global Technologies Inc.Inventors: Alexander W. DeGroot, James C. Stevens, Sylvie Y. Desjardins, Jeffrey Weinhold, Edmund Carnahan, David Gillespie, Daniel D. VanderLende
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Publication number: 20050065286Abstract: A polymer composition comprises: (a) a high molecular weight, branched component; and (b) a low molecular weight, branched component. Some polymer compositions are characterized by a substantial absent of amyl or methyl branches and a melt strength (MS) that satisfies the following relationship: M ? ? ? S ? x I 2 + y where x is greater than or equal to about 12.5 and y is greater than or equal to about 3. Some polymers are characterized by a melt strength (MS) that satisfies the following relationship: M ? ? ? S ? x I 2 + y where x is greater than or equal to about 3 and y is greater than or equal to about 4.5 and a molecular weight distribution of greater than 3. A process for making polymers is also disclosed.Type: ApplicationFiled: August 17, 2004Publication date: March 24, 2005Inventors: Alexander DeGroot, James Stevens, Sylvie Desjardins, Jeffrey Weinhold, Edmund Carnahan, David Gillespie, Daniel Vanderlende
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Publication number: 20050009688Abstract: A cocatalyst or cocatalyst component, including a compound corresponding to the formula: (A*+a)b(Z*J*j)?cd, wherein: A* is a cation of from 1 to 80 atoms, not counting hydrogen atoms, Z* is an anion group of from 1 to 50 atoms, not counting hydrogen atoms, containing two or more Lewis base sites; J* is a Lewis acid of from 1 to 80, not counting hydrogen atoms, coordinated to at least one Lewis base site, and optionally two or more such J* groups may be joined together in a moiety having multiple Lewis acidic functionality, j is from 2 to 12 and a, b, c, and d are integers from 1 to 3, with the proviso that a×b is equal to c×d, and provided further that one or more of A*, Z* or J* comprises a hydroxyl group or a polar group containing quiescent reactive functionality.Type: ApplicationFiled: June 24, 2004Publication date: January 13, 2005Inventors: David Babb, David Neithamer, Richard Campbell, Grant Jacobsen, Edmund Carnahan
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Publication number: 20030065097Abstract: A polymer composition comprises: (a) a high molecular weight, branched component; and (b) a low molecular weight, branched component.Type: ApplicationFiled: March 15, 2002Publication date: April 3, 2003Applicant: The Dow Chemical CompanyInventors: Alexander W. DeGroot, James C. Stevens, Sylvie Y. Desjardins, Jeffrey Weinhold, Edmund Carnahan, David Gillespie, Daniel D. VanderLende
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Patent number: RE42276Abstract: A polymer composition comprises: (a) a high molecular weight, branched component; and (b) a low molecular weight, branched component. Some polymer compositions are characterized by a substantial absent of amyl or methyl branches and a melt strength (MS) that satisfies the following relationship: MS ? x I 2 + y where x is greater than or equal to about 12.5 and y is greater than or equal to about 3. Some polymers are characterized by a melt strength (MS) that satisfies the following relationship: MS ? x I 2 + y where x is greater than or equal to about 3 and y is greater than or equal to about 4.5 and a molecular weight distribution of greater than 3. A process for making polymers is also disclosed.Type: GrantFiled: October 23, 2009Date of Patent: April 5, 2011Assignee: Dow Global Technologies LLCInventors: Alexander W. DeGroot, James C. Stevens, Sylvie Y. Desjardins, Jeffrey Weinhold, Edmund Carnahan, David Gillespie, Daniel D. VanderLende
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Patent number: RE43004Abstract: A polymer composition that has a backbone chain; and a plurality of long chain branches connected to the backbone is described. The polymer composition also has a value of 2g?LCB-1g?LCB g?2LCB-g?1LCB that is less than about 0.22, where 1g?LCB g?2LCB is the long chain branching index for a fraction of the composition having a Mw of 100,000 and 2g?LCB g?1LCB is the long chain branching index for a fraction of the composition having a Mw of 500,000.Type: GrantFiled: October 23, 2009Date of Patent: December 6, 2011Assignee: Dow Global Technologies LLCInventors: Alexander W. DeGroot, James C. Stevens, Sylvie Y. Desjardins, Jeffrey Weinhold, Edmund Carnahan, David Gillespie, Daniel D. VanderLende