Material Contains Two Or More Different Compounds Of Same Transition Metal Patents (Class 526/118)
  • Patent number: 9963528
    Abstract: Methods of making polyethylene resins are provided. More particularly methods of modifying the melt flow ratio and swell characteristics of polyethylene resins are provided.
    Type: Grant
    Filed: April 9, 2015
    Date of Patent: May 8, 2018
    Assignee: Univation Technologies, LLC
    Inventors: R. Eric Pequeno, Bruce J. Savatsky, Peter S. Martin, Timothy R. Lynn
  • Patent number: 9040731
    Abstract: The invention relates to a method for preparation of platinum siloxane compounds containing at least one CO ligand molecule (Pt carbonyl siloxanes). The method comprises reacting gaseous carbon monoxide (CO) with a platinum siloxane compound, preferably a platinum vinyl-cyclosiloxane compound, in solution with an organic solvent. The method is straightforward and applicable to industrial scale. With this method, specific isomers of platinum carbonyl vinylcyclosiloxanes are prepared, in which the two ?-2-ethenyl groups coordinated to the Pt atom are bonded in trans-configuration relative to the cyclosiloxane backbone. The Pt compounds obtained by the method are used as catalysts for hydrosilylation and for crosslinking and curing of siloxanes and silanes.
    Type: Grant
    Filed: July 31, 2012
    Date of Patent: May 26, 2015
    Assignee: Umicore AG & Co. KG
    Inventors: Gregory Hedden, Eric L. Frueh, Wayne J. Gallagher
  • Publication number: 20150141593
    Abstract: Disclosed herein are ethylene-based polymers having a melt index less than 50 g/10 min, a ratio of Mw/Mn from 4 to 20, a density from 0.90 to 0.945 g/cm3, and a substantially constant short chain branch distribution. These polymers can be produced using a dual catalyst system containing a boron bridged metallocene compound with a cyclopentadienyl group and an indenyl group, and a single atom bridged metallocene compound with a fluorenyl group.
    Type: Application
    Filed: May 22, 2014
    Publication date: May 21, 2015
    Applicant: Chevron Phillips Chemical Company LP
    Inventors: Qing Yang, Jeff F. Greco, Max P. McDaniel, Youlu Yu, Gary L. Glass, Tony R. Crain
  • Publication number: 20140249281
    Abstract: The invention relates to a method for preparation of platinum siloxane compounds containing at least one CO ligand molecule (Pt carbonyl siloxanes). The method comprises reacting gaseous carbon monoxide (CO) with a platinum siloxane compound, preferably a platinum vinyl-cyclosiloxane compound, in solution with an organic solvent. The method is straightforward and applicable to industrial scale. With this method, specific isomers of platinum carbonyl vinylcyclosiloxanes are prepared, in which the two ?-2-ethenyl groups coordinated to the Pt atom are bonded in trans-configuration relative to the cyclosiloxane backbone. The Pt compounds obtained by the method are used as catalysts for hydrosilylation and for crosslinking and curing of siloxanes and silanes.
    Type: Application
    Filed: July 31, 2012
    Publication date: September 4, 2014
    Applicant: UMICORE AG & CO. KG
    Inventors: Gregory Hedden, Eric L. Frueh, Wayne J. Gallagher
  • Publication number: 20140243488
    Abstract: The invention addresses a problem of obtaining a conjugated polymer having a higher molecular weight through coupling reaction of monomers using a transition metal catalyst. The invention relates to a method for producing a conjugated polymer, which comprises polymerizing one or more monomers through a coupling reaction, wherein the coupling reaction of the monomer is carried out by using one or more kinds of homogeneous transition metal complex catalysts and one or more kinds of heterogeneous transition metal complex catalysts in combination.
    Type: Application
    Filed: May 2, 2014
    Publication date: August 28, 2014
    Applicant: MITSUBISHI CHEMICAL CORPORATION
    Inventors: Wataru SATO, Rieko Fujita, Jyunya Kawai, Kenichi Satake, Mitsunori Furuya
  • Patent number: 8802584
    Abstract: A supported catalyst system comprising a phosphinimine ligand containing catalyst on a porous inorganic support treated with a metal salt has improved reactor continuity in a dispersed phase reaction in terms of initial activation and subsequent deactivation. The resulting catalyst has a lower consumption of ethylene during initiation and a lower rate of deactivation. Preferably the catalyst is used with an antistatic agent.
    Type: Grant
    Filed: March 27, 2012
    Date of Patent: August 12, 2014
    Assignee: Nova Chemicals (International) S.A.
    Inventors: Lee Douglas Henderson, Peter Phung Minh Hoang, Ian Ronald Jobe, Xiaoliang Gao
  • Publication number: 20140213744
    Abstract: A catalyst composition comprising (i) a metal salt complex of an imine bis(phenol) compound characterized by Structure 1: Wherein O and N represent oxygen and nitrogen respectively; R comprises a halogen, a hydrocarbyl group, or a substituted hydrocarbyl group; R2 and R3 can each independently be hydrogen, a halogen, a hydrocarbyl group, or a substituted hydrocarbyl group; and Q is a donor group; and (ii) a metallocene complex.
    Type: Application
    Filed: January 29, 2013
    Publication date: July 31, 2014
    Applicant: CHEVRON PHILLIPS CHEMICAL COMPANY LP
    Inventors: Mark L. HLAVINKA, Qing YANG
  • Publication number: 20140163184
    Abstract: Disclosed are procatalyst compositions having an internal electron donor which includes a substituted amide ester and optionally an electron donor component. Ziegler-Natta catalyst compositions containing the present procatalyst compositions exhibit improved catalyst activity and/or improved catalyst selectivity and produce propylene-based olefins with broad molecular weight distribution.
    Type: Application
    Filed: November 8, 2013
    Publication date: June 12, 2014
    Inventors: Linfeng Chen, Tak W. Leung, Tao Tao, Kuanqiang Gao, James X. Shu
  • Publication number: 20140088276
    Abstract: A multidimensional polymer production method for producing a multidimensional polymer containing a repeating unit derived from a first monomer and a repeating unit derived from a second monomer, the multidimensional polymer production method including the steps of: (a) using a first catalyst and a second catalyst; and (b) carrying out a polymerization reaction in the presence of the first catalyst, the second catalyst, the first monomer, the second monomer, and a chain shuttling agent in an identical reaction system, the first catalyst selectively catalyzing a positionally selective or stereoselective polymerization reaction of the first monomer per se, and the second catalyst selectively catalyzing a positionally selective or stereoselective polymerization reaction of the second monomer per se.
    Type: Application
    Filed: May 9, 2012
    Publication date: March 27, 2014
    Applicant: RIKEN
    Inventors: Zhaomin Hou, Li Pan
  • Publication number: 20140051816
    Abstract: Embodiments of the invention generally include multicomponent catalyst systems, polymerization processes and reactor blends formed by the processes. The multicomponent catalyst system generally includes a first catalyst component selected from an isotactic directing metallocene catalyst. The multicomponent catalyst system further includes a second syndiotactic directing metallocene catalyst component.
    Type: Application
    Filed: May 21, 2012
    Publication date: February 20, 2014
    Applicant: FINA TECHNOLOGY, INC.
    Inventors: Jun Tian, William J. Gauthier, David J. Rauscher, Nathan Williams
  • Publication number: 20130338320
    Abstract: A polymerization process including the use of a first Ziegler-Natta type procatalyst having no internal electron donor and a second Ziegler-Natta type procatalyst including an internal electron donor is provided.
    Type: Application
    Filed: December 22, 2011
    Publication date: December 19, 2013
    Applicant: Union Carbide Chemicals & Plastics Technology LLC
    Inventor: Robert J. Jorgensen
  • Publication number: 20130245210
    Abstract: The present invention provides dual catalyst systems and polymerization processes employing these dual catalyst systems. The disclosed polymerization processes can produce olefin polymers at higher production rates, and these olefin polymers may have a higher molecular weight and/or a lower melt index.
    Type: Application
    Filed: May 7, 2013
    Publication date: September 19, 2013
    Applicant: Chevron Philips Chemical Company LP
    Inventors: Albert P. Masino, Rex E. Murray, Qing Yang, Steve J. Secora, Kumudini C. Jayaratne, William B. Beaulieu, Errun Ding, Gary L. Glass, Alan L. Solenberger, Ted H. Cymbaluk
  • Patent number: 8536286
    Abstract: A composite catalyst useful in the production of polyethylene, which comprises at least a first catalyst and a second catalyst separated by a polymer layer, with the first catalyst and the second catalyst being identical or different, is described. A composite catalyst useful in the production of polyethylene with a broad molecular weight distribution in a single polymerization reactor, which comprises at least a first catalyst and a second catalyst separated by a polymer layer, with the first catalyst and the second catalyst being different, is also described. A process for preparing said catalysts and a process for the production of a polyethylene by using said catalysts are also described.
    Type: Grant
    Filed: March 28, 2008
    Date of Patent: September 17, 2013
    Assignees: China Petroleum & Chemical Corporation, Zhejiang University, Sinopec Engineering Incorporation
    Inventors: Wenqing Wu, Yongrong Yang, Jingdai Wang, Binbo Jiang, Guanghai Luo, Shufang Wang, Yi Wang, Xianfong Zhang, Guodong Han
  • Patent number: 8536081
    Abstract: Supported catalyst system for the polymerization of olefins, having at least two different monocyclopentadienyl transition metal compounds, one or more activators including an ionic compound having (i) a cation and (ii) an anion having up to 100 non-hydrogen atoms and the anion containing at least one substituent comprising a moiety having an active hydrogen, and one or more support materials. The supported “mixed or dual site” catalyst systems having different monocyclopentadienyl catalysts when activated by specific ionic activators lead to catalyst systems showing an improved balance of properties which may be used to prepare LLDPE polymers having broad melt flow ratios.
    Type: Grant
    Filed: November 10, 2005
    Date of Patent: September 17, 2013
    Assignee: Ineos Europe Limited
    Inventors: Grant Berent Jacobsen, Dusan Jeremic, Sergio Mastroianni, Ian Douglas McKay
  • Patent number: 8492498
    Abstract: A polymer having a density of from about 0.94 g/cm3 to about 0.96 g/cm3 and a primary structure parameter 2 (PSP2 value) of greater than about 8.5, wherein an article formed from the polymer has an environmental stress crack resistance of equal to or greater than about 1000 hours when measured in accordance with ASTM D 1693 condition A. A polymer having at least one lower molecular weight component and at least one higher molecular weight component and having a PSP2 value of equal to or greater than about 8.5, wherein an article formed from the polymer has an environmental stress crack resistance of greater than about 1000 hours when measured in accordance with ASTM D 1693 condition A.
    Type: Grant
    Filed: February 21, 2011
    Date of Patent: July 23, 2013
    Assignee: Chevron Phillips Chemical Company LP
    Inventors: Richard M. Buck, Albert P. Masino, Qing Yang, Paul J. DesLauriers, Steven J. Secora, Elizabeth M. Lanier, Guylaine St. Jean, Jon D. Ratzlaff, Christopher E. Wittner
  • Patent number: 8487053
    Abstract: Methods for removing polymer skins or build-up from reactor walls in polymerization reactor systems containing a loop slurry reactor are disclosed. Such methods can employ removing some or all of the comonomer from the reactor system in combination with increasing the polymerization temperature of the loop slurry reactor.
    Type: Grant
    Filed: November 30, 2011
    Date of Patent: July 16, 2013
    Assignee: Chevron Phillips Chemical Company LP
    Inventors: George R. Rajaendran, Max P. McDaniel, Gregory G. Hendrickson, John D. Stewart, John D. Hottovy, Ted H. Cymbaluk, Susannah Lane, Richard A. Hernandez, Elliott W. Johnson, Qing Yang, William L. Valerioti, Eric Schwerdtfeger, Albert P. Masino
  • Publication number: 20130123444
    Abstract: The present invention generally relates to a new method of polymerizing ethylene. In one embodiment, the present invention relates to compounds utilized in the polymerization of ethylene and to a synthesis/polymerization method that uses same. In another embodiment branched polyethylene is synthesized from an ethylene monomer using, in this embodiment, at least one nickel iminophosphonamide (PN2) complex. In still another embodiment, the reaction of (phenyl) (triphenylphosphine) (diphenyl-bis (trimethylsilylimino) phosphorato)-nickel, with Rh(acac) (C2H4)2 and ethylene yield a branched polyethylene. In an alternative of this embodiment, the reaction of (phenyl) (triphenylphosphine) (methyl-cis(trimethylsilyl)amino-bis(trimethylsilylimino) phosphorato)-nickel and ethylene, with or without Ni(COD)2, yields a branched polyethylene.
    Type: Application
    Filed: November 2, 2012
    Publication date: May 16, 2013
    Applicant: THE UNIVERSITY OF AKRON
    Inventor: The University of Akron
  • Publication number: 20130102743
    Abstract: Embodiments of the invention generally include multi-component catalyst systems, polymerization processes and heterophasic copolymers formed by the processes. The multi-component catalyst system generally includes a first catalyst component selected from Ziegler-Natta catalyst systems including a diether internal electron donor and a metallocene catalyst represented by the general formula XCpACpBMAn, wherein X is a structural bridge, CpA and CpB each denote a cyclopentadienyl group or derivatives thereof, each being the same or different and which may be either substituted or unsubstituted, M is a transition metal and A is an alkyl, hydrocarbyl or halogen group and n is an integer between 0 and 4.
    Type: Application
    Filed: July 12, 2011
    Publication date: April 25, 2013
    Applicant: FINA TECHNOLOGY, INC.
    Inventors: Tim J. Coffy, Michel Daumerie, Kenneth P. Blackmon, William Gauthier, Jun Tian, Joseph Thorman
  • Publication number: 20130079477
    Abstract: The present invention provides dual catalyst systems and polymerization processes employing these dual catalyst systems. The disclosed polymerization processes can produce olefin polymers at higher production rates, and these olefin polymers may have a higher molecular weight and/or a lower melt index.
    Type: Application
    Filed: November 20, 2012
    Publication date: March 28, 2013
    Applicant: CHEVRON PHILLIPS CHEMICAL COMPANY LP
    Inventor: Chevron Phillips Chemical Company LP
  • Patent number: 8389655
    Abstract: A process for preparing polymers, especially multi-block copolymer containing therein two or more segments or blocks differing in chemical or physical properties, by contacting propylene, 4-methyl-1-pentene, or other C4-8 ?-olefins and one or more copolymerizable comonomers, especially ethylene in the presence of a composition comprising 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: Grant
    Filed: April 19, 2011
    Date of Patent: March 5, 2013
    Assignee: Dow Global Technologies, LLC
    Inventors: Daniel J. Arriola, Edmund M. Carnahan, David D. Devore, Phillip D. Hustad, Roger L. Kuhlman, Timothy T. Wenzel
  • Publication number: 20130053523
    Abstract: Catalyst compositions comprising a first metallocene compound, a second metallocene compound, an activator-support, and an organoaluminum compound are provided. An improved method for preparing cyclopentadienyl complexes used to produce polyolefins is also provided.
    Type: Application
    Filed: October 30, 2012
    Publication date: February 28, 2013
    Applicant: CHEVRON PHILLIPS CHEMICAL COMPANY LP
    Inventor: Chevron Phillips Chemical Company LP
  • Publication number: 20120322960
    Abstract: Embodiments of the invention generally include multicomponent catalyst systems, polymerization processes and reactor blends formed by the processes. The multicomponent catalyst system generally includes a first catalyst component selected from an isotactic directing metallocene catalyst. The multicomponent catalyst system further includes a second syndiotactic directing metallocene catalyst component.
    Type: Application
    Filed: May 21, 2012
    Publication date: December 20, 2012
    Applicant: FINA TECHNOLOGY, INC.
    Inventors: Jun Tian, William J. Gauthier, David J. Rauscher, Nathan Williams
  • Publication number: 20120322961
    Abstract: Embodiments of the invention generally include multicomponent catalyst systems, polymerization processes and reactor blends formed by the processes. The multicomponent catalyst system generally includes a first catalyst component and a second catalyst component, wherein the second catalyst component is different from the first catalyst component.
    Type: Application
    Filed: May 21, 2012
    Publication date: December 20, 2012
    Applicant: FINA TECHNOLOGY, INC.
    Inventors: David J. Rauscher, Jun Tian, William J. Gauthier, Shady N. Henry
  • Publication number: 20120316298
    Abstract: The present invention discloses a catalyst system that comprises several bridged bis- or bis-tetrahydro-indenyl components having different substitution patterns in order to prepare polymers having a broad molecular weight distribution.
    Type: Application
    Filed: May 21, 2012
    Publication date: December 13, 2012
    Applicant: TOTAL PETROCHEMICALS RESEARCH FELUY
    Inventor: Abbas Razavi
  • Patent number: 8329833
    Abstract: The present invention provides polymerization catalyst compositions employing novel dinuclear metallocene compounds. Methods for making these new dinuclear metallocene compounds and for using such compounds in catalyst compositions for the polymerization and copolymerization of olefins are also provided.
    Type: Grant
    Filed: February 20, 2012
    Date of Patent: December 11, 2012
    Assignee: Chevron Phillips Chemical Company LP
    Inventors: Rex E. Murray, Kumudini C. Jayaratne, Qing Yang, Joel L. Martin
  • Patent number: 8318872
    Abstract: A method of performing a polymerization reaction in a gas phase polymerization reactor to produce a bimodal polymer while controlling activity of a bimodal polymerization catalyst composition in the reactor by controlling concentration of at least one induced condensing agent (‘ICA’) in the reactor is provided. In some embodiments, the ICA is isopentane (or another hydrocarbon compound) and the bimodal catalyst composition includes a Group 15 and metal containing catalyst compound (or other HMW catalyst for catalyzing polymerization of a high molecular weight fraction of the product), and a metallocene catalyst compound (or other LMW catalyst for catalyzing polymerization of a low molecular weight fraction of the product).
    Type: Grant
    Filed: December 17, 2008
    Date of Patent: November 27, 2012
    Assignee: Univation Technologies, LLC
    Inventors: Bruce J. Savatsky, John H. Oskam, Mark W. Blood, Mark B. Davis, Douglas H. Jackson, Timothy R. Lynn, Daniel P. Zilker, Jr.
  • Patent number: 8318873
    Abstract: Catalyst compositions comprising a first metallocene compound, a second metallocene compound, an activator-support, and an organoaluminum compound are provided. An improved method for preparing cyclopentadienyl complexes used to produce polyolefins is also provided.
    Type: Grant
    Filed: February 3, 2011
    Date of Patent: November 27, 2012
    Assignee: Chevron Phillips Chemical Company LP
    Inventors: Kumudini C. Jayaratne, Michael D. Jensen, Qing Yang
  • Patent number: 8318874
    Abstract: The present invention generally relates to a process that selectively polymerizes ethylene in the presence of an alpha-olefin, and a precatalyst and catalyst useful in such processes.
    Type: Grant
    Filed: June 10, 2010
    Date of Patent: November 27, 2012
    Inventors: Jerzy Klosin, Dean M. Welsh
  • Publication number: 20120289668
    Abstract: The present invention discloses a catalyst system that comprises several bridged pseudo-bisindenyl components that are structurally different in order to prepare polymers having a broad molecular weight distribution.
    Type: Application
    Filed: May 21, 2012
    Publication date: November 15, 2012
    Applicant: TOTAL PETROCHEMICALS RESEARCH FELUY
    Inventor: Abbas Razavi
  • Publication number: 20120264894
    Abstract: Propylene polymerization processes, polymers and films formed therefrom are described herein. The propylene polymerization processes generally include contacting propylene and an amount of ethylene with a first metallocene catalyst and a second metallocene catalyst within a polymerization reaction vessel to form a propylene based polymer, wherein the amount is an amount effective to form the propylene based polymer including from about 2 wt. % to about 6 wt. % ethylene, the second metallocene catalyst is capable of incorporating a greater amount of ethylene into the propylene based polymer than the first metallocene catalyst and wherein the first metallocene catalyst is capable of forming a propylene/ethylene random copolymer exhibiting a melting temperature that is greater than that of a propylene/ethylene random copolymer formed from the second metallocene catalyst.
    Type: Application
    Filed: June 18, 2012
    Publication date: October 18, 2012
    Applicant: FINA TECHNOLOGY, INC.
    Inventors: Tim Coffy, Kenneth Blackmon, Joseph Thorman, David Rauscher, Jun Tian, William Gauthier, Nathan Williams
  • Publication number: 20120232229
    Abstract: The present invention provides polymerization processes utilizing a catalyst system containing an ansa-metallocene and a second metallocene compound for the production of olefin polymers.
    Type: Application
    Filed: April 2, 2012
    Publication date: September 13, 2012
    Applicant: CHEVRON PHILLIPS CHEMICAL COMPANY LP
    Inventors: Richard M. Buck, Qing Yang, Albert P. Masino, Christopher E. Wittner
  • Patent number: 8236907
    Abstract: A catalyst composition comprising a neutral bimetallic diphenoxydiiminate complex of group 10 metals or Ni, Pd or Pt is disclosed. The compositions can be used for the preparation of homo- and co-polymers of olefinic monomer compounds.
    Type: Grant
    Filed: October 6, 2009
    Date of Patent: August 7, 2012
    Assignee: Northwestern University
    Inventors: Tobin J. Marks, Brandon A. Rodriguez, Massimiliano Delferro
  • Publication number: 20120190804
    Abstract: This invention relates to catalyst compositions, methods, and polymers encompassing at least one first Group 4 metallocene compound comprising bridging ?5-cyclopentadienyl-type ligands, in combination with at least one second Group 4 metallocene with non-bridging ?5-cyclopentadienyl-type ligands, typically in combination with at least one cocatalyst, and at least one activator. The compositions and methods disclosed herein provide ethylene polymers with a bimodal molecular weight distribution.
    Type: Application
    Filed: February 15, 2012
    Publication date: July 26, 2012
    Applicant: CHEVRON PHILLIPS CHEMICAL COMPANY LP
    Inventors: QING YANG, KUMUDINI C. JAYARATNE, MICHAEL D. JENSEN, MAX P. MCDANIEL, JOEL L. MARTIN, MATTHEW G. THORN, JERRY T. LANIER, TONY R. CRAIN
  • Publication number: 20120184693
    Abstract: Disclosed is a method for preparing an ethylenic polymer with a low melting point in a more economical manner. In the ethylenic polymer preparation method, ethylene is polymerized under the presence of an olefin polymerization catalyst that is obtained by bringing an olefin polymerization catalytic component that comprises a transition metal complex represented by the following general formula (1), a trimerization catalytic component that comprises a transition metal complex represented by the following general formula (2), and an activating co-catalytic component into contact with each other.
    Type: Application
    Filed: September 30, 2010
    Publication date: July 19, 2012
    Applicant: SUMITOMO CHEMICAL COMPANY, LIMITED
    Inventors: Yasutoyo Kawashima, Takahiro Hino, Taichi Senda
  • Publication number: 20120172548
    Abstract: A polyolefin has 1) a density in the range of 0.93 to 0.97 g/cm3, 2) a BOCD (Broad Orthogonal Co-monomer Distribution) index defined by a given equation in the range of 1 to 5, and 3) a molecular weight distribution (weight average molecular weight/number average molecular weight) in the range of 4 to 10. A supported hybrid metallocene catalyst comprises a first metallocene compound represented by a first given formulae, a second metallocene compound represented by one of three given formulae, and a support.
    Type: Application
    Filed: December 27, 2011
    Publication date: July 5, 2012
    Applicant: LG CHEM, LTD.
    Inventors: Joon-Hee CHO, Ki-Soo LEE, Yong-Gyu HAN, Dae-Sik HONG, Heon-Yong KWON, Jong-Sang PARK, Seon Kyoung KIM
  • Publication number: 20120149855
    Abstract: The present invention provides polymerization catalyst compositions employing novel dinuclear metallocene compounds. Methods for making these new dinuclear metallocene compounds and for using such compounds in catalyst compositions for the polymerization and copolymerization of olefins are also provided.
    Type: Application
    Filed: February 20, 2012
    Publication date: June 14, 2012
    Applicant: CHEVRON PHILLIPS CHEMICAL COMPANY LP
    Inventors: Rex E. Murray, Kumudini C. Jayaratne, Qing Yang, Joel L. Martin
  • Publication number: 20120101239
    Abstract: The present invention relates to a process for preparing an activating support for metallocene complexes in the polymerisation of olefins comprising the steps of: I) providing a support consisting in particles formed from at least one porous mineral oxide; II) optionally fixing the rate of silanols on the surface of the support; III) functionalising the support with a solution containing a metallic salt; IV) heating the functionalised support of step c) under an inert gas or hydrogen; V) oxidising the support of step IV by treatment under N2O and then under oxygen; VI) retrieving an active support having a controlled number of OH groups. That activating support is used to activate a metallocene catalyst component for the polymerisation of olefins.
    Type: Application
    Filed: April 29, 2010
    Publication date: April 26, 2012
    Applicants: Centre National de la Rescherche Scientifique, TOTAL PETROCHEMICALS RESEARCH FELUY
    Inventors: Gaëlle Pannier, Christophe Boisson, Roger Spitz
  • Patent number: 8148588
    Abstract: The invention relates to a continuous process for preparing polyolefins having a bimodal or multimodal molar mass distribution in suspension in at least two reactors R1, R2.x, R3.y which are connected in series and in which different reaction conditions are set. In this process, the offgases A1, A2.x, A3.y, A4 and A5 leaving all the reactors connected in series are firstly collected, the collected offgases are then compressed in a compression stage 10, the compressed offgases are subsequently cooled and the cooled material is separated into a gaseous fraction and a liquid fraction. The separated fractions are then recirculated to the polymerization process at different points. The process of the invention allows the total conversion of the polymerization, based on monomer and comonomer used, to be increased to a surprising extent.
    Type: Grant
    Filed: January 25, 2005
    Date of Patent: April 3, 2012
    Assignee: Basell Polyolefine GmbH
    Inventors: Joachim Berthold, Frank Peter Alt, Kaspar Evertz, Peter Kölle
  • Publication number: 20120065345
    Abstract: Disclosed are a supported hybrid chromium-based catalyst comprising a porous inorganic support, at least one inorganic oxide Cr active site (A), and at least one organic Cr active site (B), wherein the at least one inorganic oxide Cr active site (A) and the at least one organic Cr active site (B) are both supported on the porous inorganic support, processes for producing the supported hybrid chromium-based catalyst and processes for producing ethylene homopolymers and/or ethylene copolymers using the catalysts of the present disclosure.
    Type: Application
    Filed: August 12, 2011
    Publication date: March 15, 2012
    Inventors: Yan TANG, Boping Liu, Jianwen Da, Shiliang Zhang, Kan Xie, Qi Dong
  • Publication number: 20120046428
    Abstract: A polymerization catalyst system and polymerization processes using the catalyst systems are disclosed. The polymerization catalyst systems may include a) a first catalyst compound, and b) a second catalyst compound, wherein the first catalyst compound includes an oxadiazole-containing compound. In some embodiments, the oxadiazole-containing compound has essentially no hydrogen response, thus allowing better and/or tailored control of product properties when producing polymers using the catalyst system.
    Type: Application
    Filed: May 14, 2010
    Publication date: February 23, 2012
    Applicant: UNIVATION TECHNOLOGIES, LLC
    Inventors: Sun-Chueh Kao, Francis C. Rix, Dongming Li, C. Jeff Harlan, Parul A. Khokhani
  • Publication number: 20120010375
    Abstract: The present invention provides a polymerization process utilizing a dual metallocene catalyst system for the production of broad or bimodal molecular weight distribution polymers, generally, in the absence of added hydrogen. Polymers produced from the polymerization process are also provided, and these polymers can have a Mn in a range from about 9,000 to about 30,000 g/mol, and a short chain branch content that decreases as molecular weight increases.
    Type: Application
    Filed: July 6, 2010
    Publication date: January 12, 2012
    Applicant: CHERVON PHILLIPS CHEMICAL COMPANY LP
    Inventors: Qing Yang, Max P. McDaniel, Tony R. Crain, Youlu Yu
  • Publication number: 20110313111
    Abstract: An ethylene copolymer, a catalyst system suitable to prepare the ethylene copolymer, and a process to prepare such ethylene copolymer are described. The use of the ethylene copolymer as impact modifier in polyethylene and as compatibilizer in a polymer blend are also described. The ethylene copolymer has a density from 0.855 g/cm3 to 0.910 g/cm3, a polydispersity Mw/Mn lower than 3.5, comprises at least one first ethylene polymer component and at least one second ethylene polymer component having different comonomer contents so as to show at least two predetermined CRYSTAF peak temperatures.
    Type: Application
    Filed: February 16, 2010
    Publication date: December 22, 2011
    Applicant: BASELL POLYOLEFINE GMBH
    Inventors: Fabiana Fantinel, Shahram Mihan, Volker Dolle, Andreas Maus
  • Publication number: 20110275772
    Abstract: A method of performing a polymerization reaction in a gas phase polymerization reactor to produce a bimodal polymer while controlling activity of a bimodal polymerization catalyst composition in the reactor by controlling concentration of at least one induced condensing agent (‘ICA’) in the reactor is provided. In some embodiments, the ICA is isopentane (or another hydrocarbon compound) and the bimodal catalyst composition includes a Group 15 and metal containing catalyst compound (or other HMW catalyst for catalyzing polymerization of a high molecular weight fraction of the product), and a metallocene catalyst compound (or other LMW catalyst for catalyzing polymerization of a low molecular weight fraction of the product).
    Type: Application
    Filed: December 17, 2008
    Publication date: November 10, 2011
    Applicant: UNIVATION TECHNOLOGIES, LLC
    Inventors: Bruce J. Savatsky, John H. Oskam, Mark W. Blood, Mark B. Davis, Douglas H. Jackson, Timothy R. Lynn, Daniel P. Zilker, JR.
  • Publication number: 20110269923
    Abstract: Embodiments of the invention generally include multi-component catalyst systems, polymerization processes and heterophasic copolymers formed by the processes. The multi-component catalyst system generally includes a first catalyst component selected from Ziegler-Natta catalyst systems including a diether internal electron donor and a metallocene catalyst represented by the general formula XCpACpBMAn, wherein X is a structural bridge, CpA and CpB each denote a cyclopentadienyl group or derivatives thereof, each being the same or different and which may be either substituted or unsubstituted, M is a transition metal and A is an alkyl, hydrocarbyl or halogen group and n is an integer between 0 and 4.
    Type: Application
    Filed: July 12, 2011
    Publication date: November 3, 2011
    Applicant: FINA TECHNOLOGY, INC.
    Inventors: Tim J. Coffy, Michel Daumerie, Kenneth P. Blackmon, William Gauthier, Jun Tian, Joseph Thorman
  • Publication number: 20110257348
    Abstract: The present invention provides a polymerization process utilizing a dual ansa-metallocene catalyst system. Polymers produced from the polymerization process are also provided, and these polymers have a reverse comonomer distribution, a non-bimodal molecular weight distribution, a ratio of Mw/Mn from about 3 to about 8, and a ratio of Mz/Mw from about 3 to about 6.
    Type: Application
    Filed: April 19, 2010
    Publication date: October 20, 2011
    Applicant: Chevron Phillips Chemical Company LP
    Inventors: Qing Yang, Max P. McDaniel, William B. Beaulieu, Joel L. Martin, Tony R. Crain
  • Patent number: 8039569
    Abstract: Monomodal molding compositions based on polymers of ethylene, wherein the density of the molding compositions is in the range from 0.940 to 0.96 g/cm3, the Mi is in the range from 0.5 to 10.0 g/10 min. the polydispersity Mw/Mn is in the range from 3 to 20, the branches/1000 carbon atoms is in the range from 0.1 to 10 and the weight average molar mass Mw is in the range from 50 000 g/mol to 150 000 g/mol, and also injection-molded shaped bodies as well as screw closures comprising the molding compositions.
    Type: Grant
    Filed: April 15, 2006
    Date of Patent: October 18, 2011
    Assignee: Basell Polyolefine GmbH
    Inventors: Jennifer Kipke, Shahram Mihan, Rainer Karer
  • Patent number: 8008403
    Abstract: A polyethylene which comprises ethylene homopolymers and/or copolymers of ethylene with 1-alkenes and has a molar mass distribution width Mw/Mn of from 5 to 30, a density of from 0.92 to 0.955 g/cm3, a weight average molar mass Mw of from 50000 g/mol to 500 000 g/mol and has from 0.01 to 20 branches/1000 carbon atoms and a z-average molar mass Mz of less than 1 million g/mol, a process for its preparation, catalysts suitable for its preparation and also films in which this polyethylene is present.
    Type: Grant
    Filed: April 25, 2005
    Date of Patent: August 30, 2011
    Assignee: Basell Polyolefine GmbH
    Inventors: Jennifer Kipke, Shahram Mihan, Rainer Karer, Dieter Lilge
  • Publication number: 20110201770
    Abstract: This invention relates to catalyst compositions, methods, and polymers encompassing at least one first Group 4 metallocene compound comprising bridging ?5-cyclopentadienyl-type ligands, in combination with at least one second Group 4 metallocene with non-bridging ?5-cyclopentadienyl-type ligands, typically in combination with at least one cocatalyst, and at least one activator. The compositions and methods disclosed herein provide ethylene polymers with a bimodal molecular weight distribution.
    Type: Application
    Filed: April 26, 2011
    Publication date: August 18, 2011
    Applicant: CHEVRON PHILLIPS CHEMICAL COMPANY LP
    Inventors: QING YANG, Kumudini C. Jayaratne, Michael D. Jensen, Max P. McDaniel, Joel L. Martin, Matthew G. Thorn, Jerry T. Lanier, Tony R. Crain
  • Publication number: 20110190460
    Abstract: Catalyst compositions comprising a first metallocene compound, a second metallocene compound, an activator-support, and an organoaluminum compound are provided. An improved method for preparing cyclopentadienyl complexes used to produce polyolefins is also provided.
    Type: Application
    Filed: February 3, 2011
    Publication date: August 4, 2011
    Applicant: CHEVRON PHILLIPS CHEMICAL COMPANY LP
    Inventors: Kumudini C. Jayaratne, Michael D. Jensen, Qing Yang
  • Patent number: 7981992
    Abstract: Copolymers, especially multi-block copolymer containing therein two or more segments or blocks, are prepared by polymerizing propylene, 4-methyl-1-pentene, or another C4-8 ?-olefin in the presence of a composition comprising 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 having increased incidence of regio-irregular branching compared to the polymer prepared by catalyst (A) under equivalent polymerization conditions, and (C) a chain shuttling agent.
    Type: Grant
    Filed: January 30, 2006
    Date of Patent: July 19, 2011
    Assignee: Dow Global Technologies LLC
    Inventors: Daniel J. Arriola, Edmund M. Carnahan, David D. Devore, Phillip D. Hustad, Roger L. Kuhlman, Timothy T. Wenzel