Patents by Inventor David R. Neithamer
David R. Neithamer 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).
-
Publication number: 20230098987Abstract: Embodiments are directed towards a use of a supported gas-phase biphenylphenol polymerization catalyst to make a polymer via a gas-phase polymerization process, wherein the supported gas-phase biphenylphenol polymerization catalyst is made from a gas-phase biphenylphenol polymerization precatalyst of Formula I.Type: ApplicationFiled: December 17, 2020Publication date: March 30, 2023Applicant: Dow Global Technologies LLCInventors: Angela I. Padilla-Acevedo, Andrew J. Young, Roger L. Kuhlman, Susan Brown, Matthew E. Belowich, David R. Neithamer, Jerzy Klosin, David M. Pearson, Leslie E. O'Leary, Joseph F. DeWilde
-
Publication number: 20220403061Abstract: Embodiments are directed towards the use of a supported biphenylphenol polymerization catalyst made from a biphenylphenol polymerization precatalyst of Formula I via a gas-phase or slurry-phase polymerization process under gas-phase or slurry-phase polymerization conditions to make a polymer.Type: ApplicationFiled: November 4, 2020Publication date: December 22, 2022Applicant: Dow Global Technologies LLCInventors: Angela I. Padilla-Acevedo, Andrew J. Young, Roger L. Kuhlman, Ruth Figueroa, Susan Brown, Matthew E. Belowich, David R. Neithamer, Jerzy Klosin, David M. Pearson, Mari S. Rosen, Bethany M. Neilson, Johnathan E. DeLorbe, Leslie E. O'Leary
-
Patent number: 8434931Abstract: This invention is a stirrer, impeller or stirrer paddle used for mixing small volumes of liquid in a vessel having a small capacity for liquid, said impeller being characterized by an impeller blade connected to the bottom portion of a support, where the blade has an opening extending through the blade from the front to the back surface of the blade said opening extending across the rotational axis of the impeller. The invention is also an apparatus comprising that blade, a method of mixing components using the apparatus and an array of two or more of the apparatuses.Type: GrantFiled: May 2, 2008Date of Patent: May 7, 2013Inventors: Daryoosh Beigzadeh, Victor A. Atiemo-Obeng, Laura J. Dietsche, David R. Neithamer
-
Publication number: 20090215190Abstract: The present invention generally relates to an apparatus and method for running a plurality of essentially simultaneous exothermic reactions, endothermic reactions, or a combination thereof in sealed reactors and obtaining physico-chemical data, preferably temperature data, and, optionally, time data, for the reactions, wherein reaction mixtures in the sealed reactors are adiabatically thermally insulated from one another so that temperature in one sealed reactor does not materially affect temperature in any other, including an adjacent, sealed reactor.Type: ApplicationFiled: February 20, 2009Publication date: August 27, 2009Inventors: Pamela J. Stirn, Charles A. Nielsen, Sylvie Desjardins, David R. Neithamer, Paul L. Morabito, Marc A. Springs
-
Patent number: 7491672Abstract: 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: GrantFiled: September 25, 2006Date of Patent: February 17, 2009Assignee: Ineos Europe LimitedInventors: Edmund M. Carnahan, David R. Neithamer
-
Publication number: 20080298170Abstract: This invention is a stirrer, impeller or stirrer paddle used for mixing small volumes of liquid in a vessel having a small capacity for liquid, said impeller being characterized by an impeller blade connected to the bottom portion of a support, where the blade has an opening extending through the blade from the front to the back surface of the blade said opening extending across the rotational axis of the impeller. The invention is also an apparatus comprising that blade, a method of mixing components using the apparatus and an array of two or more of the apparatuses.Type: ApplicationFiled: May 2, 2008Publication date: December 4, 2008Inventors: Daryoosh Beigzadeh, Victor A. Atiemo-Obeng, Laura J. Dietsche, David R. Neithamer
-
Patent number: 7094901Abstract: 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: GrantFiled: June 24, 2004Date of Patent: August 22, 2006Assignee: Dow Global Michigan Technologies Inc.Inventors: David A. Babb, David R. Neithamer, Richard E. Campbell, Jr., Grant B. Jacobsen, Edmund M. Carnahan
-
Patent number: 7012121Abstract: Supported catalyst compositions use for use in the gas-phase polymerization of one or more ?-olefins and methods for making and using the same, the catalyst composition including A) an inert support; B) a Group 4–10 metal complex corresponding to the formula: where M is a metal from one of Groups 4 to 10 of the Periodic Table of the Elements in the +2 or +4 formal oxidation state, Cp is a ?-bonded anionic ligand group, Z is divalent moiety bound to Cp and bound to M by either covalent or coordinate/covalent bonds and contains boron or a member of Group 14 of the Periodic Table of the Elements, and also nitrogen, phosphorus, sulfur or oxygen, and X is a neutral conjugated diene ligand group having up to 60 atoms, or a dianionic derivative thereof; and C) an ionic cocatalyst capable of converting the metal complex into an active polymerization catalyst represented by the formula: [L*-H]+[(C6F5)3BC6H4—O—MORCx-1Xay]?, wherein L* is a neutral Lewis base, Mo is a metal or metalloid selected from Groups 1–14 oType: GrantFiled: July 1, 2004Date of Patent: March 14, 2006Assignee: BP Chemicals LimitedInventors: Edmund M Carnahan, David R Neithamer, Ravi B Shankar
-
Patent number: 6891005Abstract: A gas phase olefin polymerization wherein the catalyst comprises a novel Group 4 transition metal complex containing a boron or aluminum bridging group containing a nitrogen containing group, especially an amido group.Type: GrantFiled: December 20, 2002Date of Patent: May 10, 2005Assignee: BP Chemicals LimitedInventors: David D. Devore, David R. Neithamer
-
Patent number: 6825369Abstract: A monocyclopentadienyl or substituted monocyclopentadienyl metal complex containing compound useful as a polymerization catalyst corresponding to the formula: CpMXn+A− wherein: Cp is an &eegr;5-substituted cyclopentadienyl group optionally covalently bonded to M through a substituent, said Cp being substituted in at least one occurrence with an alkoxy or aryloxy group; M is a metal of Group 3-10 or the Lanthanide Series of the Periodic Table bound in an &eegr;hu 5 bonding mode to the cyclopentadienyl or substituted cyclopentadienyl group; X each occurrence independently is selected from the group consisting of hydride, halo, alkyl, aryl, silyl, germyl, aryloxy, alkoxy, amide, siloxy, neutral Lewis base ligands and combinations thereof having up to 20 non-hydrogen atoms, and optionally one X together with Cp forms a metallocycle with M; R is alkyl or aryl of up to 10 carbons; n is one or two depending on the valence of M; and A is a noncoordinating, compatible anion of a Bronsted acid salt.Type: GrantFiled: March 10, 1994Date of Patent: November 30, 2004Assignee: The Dow Chemical CompanyInventors: James C. Stevens, David R. Neithamer
-
Publication number: 20040235646Abstract: The invention provides supported catalyst and methods for making and using the same, which are characterized as employing organometallic Group 4-10 catalysts with specially selected dienes, which, when combined with a cocatalyst, result in a supported catast which has improved kinetic profiles in the gas polymerization process.Type: ApplicationFiled: July 1, 2004Publication date: November 25, 2004Applicant: BP Chemical LimitedInventors: Edmund M. Carnahan, David R. Neithamer, Ravi B. Shankar
-
Publication number: 20040077491Abstract: 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 18, 2003Publication date: April 22, 2004Applicant: The Dow Chemical CompanyInventors: David A. Babb, David R. Neithamer, Richard E. Campbell, Grant B. Jacobsen, Edmund M. Carnahan
-
Patent number: 6716786Abstract: A composition useful as an addition polymerization catalyst comprising: A) an inert support; B) a Group 3-10 or Lanthanide metal complex; and C) an activator compound capable of causing the metal complex B) to form an active polymerization catalyst, said compound corresponding to the formula: (A*+a)b(Z*J*j)−cd, (I) wherein: A* is a cation of charge +a, Z* is an anion group of from 1 to 50, preferably 1 to 30 atoms, not counting hydrogen atoms, further containing two or more Lewis base sites; J* independently each occurrence is a Lewis acid coordinated to at least one Lewis base-site of Z*, and optionally two or more such J* groups may be joined together in a moiety having multiple Lewis acidic functionality, j is a number 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.Type: GrantFiled: August 3, 2000Date of Patent: April 6, 2004Assignee: The Dow Chemical CompanyInventors: Richard E. Campbell, Jr., Grant B. Jacobsen, David D. Devore, Robert E. LaPointe, David R. Neithamer
-
Publication number: 20040002162Abstract: A sample holding array is provided which is particularly advantageous for various IR and near IR transmission spectroscopy analysis that yields high quality spectra with minimal artifacts. The sample holding array may also be used desirably with slight modifications for Raman analysis, x-ray fluorescence and nanoindentation.Type: ApplicationFiled: June 19, 2003Publication date: January 1, 2004Inventors: Mary Anne Leugers, David R. Neithamer, Jack E. Hetzner, Matthew L. Krause
-
Publication number: 20030212222Abstract: 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 &pgr;-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: October 3, 2002Publication date: November 13, 2003Inventors: Edmund M. Carnahan, David R. Neithamer
-
Publication number: 20030199650Abstract: A gas phase olefin polymerization wherein the catalyst comprises a novel Group 4 transition metal complex containing a boron or aluminum bridging group containing a nitrogen containing group, especially an amido group.Type: ApplicationFiled: December 20, 2002Publication date: October 23, 2003Applicant: BP Chemicals LimitedInventors: David D. Devore, David R. Neithamer
-
Patent number: 6627573Abstract: A compound useful as a cocatalyst or cocatalyst component, especially for use as an addition polymerization catalyst compound, corresponding to the formula: (A*+a)b(Z*J*j)−cd, wherein: A* is a cation of from 1 to 80, preferably 1 to 60 atoms, not counting hydrogen atoms, said A* having a charge +a, Z* is an anion group of from 1 to 50, preferably 1 to 30 atoms, not counting hydrogen atoms, further containing two or more Lewis base sites; J* independently each occurrence is a Lewis acid of from 1 to 80, preferably 1 to 60 atoms, not counting hydrogen atoms, coordinated to at least one Lewis base site of Z*, and optionally two or more such J* groups may be joined together in a moiety having multiple Lewis acidic functionality, j is a number 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 functionaliType: GrantFiled: July 12, 2001Date of Patent: September 30, 2003Assignee: The Dow Chemical CompanyInventors: David A. Babb, Richard E. Campbell, Jr., David R. Neithamer, Grant B. Jacobsen, Edmund M. Carnahan
-
Publication number: 20020160907Abstract: A supported catalyst and methods for making and using the same, by employing organometallic Group 4-10 catalysts with specially selected dienes, which, when combined with a cocatalyst, result in a supported catalyst which has improved kinetic profiles in the gas polymerization process.Type: ApplicationFiled: October 18, 2001Publication date: October 31, 2002Inventors: Edmund M. Carnahan, David R. Neithamer, Ravi B. Shankar
-
Patent number: 6465384Abstract: Biscyclopentadienyl, Group 4 transition metal complexes formed with conjugated dienes wherein the diene is bound to the transition metal either in the form of a &sgr;-complex or a &pgr;-complex in combination with strong Lewis acids, Bronsted acid salts, carbenium ion salts, salts containing a cationic oxidizing agent, or subjected to bulk electrolysis in the presence of compatible, inert non-coordinating anions form catalysts for polymerizing olefins, diolefins and/or acetylenically unsaturated monomers.Type: GrantFiled: June 7, 1995Date of Patent: October 15, 2002Assignee: The Dow Chemical CompanyInventors: Francis J. Timmers, James C. Stevens, David D. Devore, Robert K. Rosen, Jasson T. Patton, David R. Neithamer
-
Patent number: 6365779Abstract: Fluorohydrocarbyl substituted boratabenzene compounds, especially perfluorophenyl substituted boratabenzene compounds, are useful olefin polymerization cocatalysts with metallocenes.Type: GrantFiled: February 20, 2001Date of Patent: April 2, 2002Assignee: The Dow Chemical CompanyInventors: David D. Devore, Francis J. Timmers, David R. Neithamer