Silicon Present In Inorganic Oxygen-containing Compound Patents (Class 526/129)
-
Patent number: 8703886Abstract: Disclosed herein are polymerization processes for the production of olefin polymers. These polymerization processes use a catalyst system containing at least two activator-supports. One activator-support is a halided solid oxide, and the other activator-support is a sulfated solid oxide and/or phosphated solid oxide.Type: GrantFiled: February 27, 2013Date of Patent: April 22, 2014Assignee: Chevron Phillips Chemical Company LPInventors: Qing Yang, Max P. McDaniel, Tony R. Crain, Kathy S. Collins
-
Publication number: 20140107301Abstract: The present invention provides polymerization processes utilizing an ansa-metallocene catalyst system for the production of olefin polymers. Polymers produced from the polymerization processes have properties that vary based upon the presence or the absence of hydrogen and/or comonomer in the polymerization process.Type: ApplicationFiled: December 18, 2013Publication date: April 17, 2014Applicant: Chevron Phillips Chemical Company LPInventors: Richard M. Buck, Qing Yang, Albert P. Masino, Christopher E. Wittner
-
Patent number: 8680001Abstract: The present invention relates to a process for preparing a catalyst solid for olefin polymerization, comprising a finely divided support, an aluminoxane and a metallocene compound, which comprises: a) firstly combining the finely divided support with the aluminoxane and subsequently b) adding the reaction product of a metallocene compound with at least one organometallic compound to the modified support, catalyst solids obtainable by this process, catalyst systems comprising these catalyst solids, their use for the polymerization of olefins and a process for the polymerization of olefins.Type: GrantFiled: September 24, 2008Date of Patent: March 25, 2014Assignee: Basell Polyolefine GmbHInventors: Heike Gregorius, Volker Fraaije, Manfred Lutringshauser
-
Patent number: 8637618Abstract: The field of the invention relates generally to a method for preparing very-high or ultra-high molecular weight polyethylene. More particularly, the present invention related to a method of preparing very-high or ultra-high molecular weight polyethylene using a supported catalyst comprising a support, an activator and a metal-ligand complex, as well as the catalyst itself. The present invention additionally relates to a method of using a supported catalyst comprising a support, an activator and co-supported metal-ligand complexes to obtain a bi-modal molecular weight distribution of polyethylene.Type: GrantFiled: December 22, 2009Date of Patent: January 28, 2014Assignee: Symyx Solutions, Inc.Inventors: Gary M. Diamond, Margarete K. Leclerc, Guang Zhu
-
Patent number: 8633286Abstract: A catalyst composition that includes a support material having an improved particle-size distribution is provided. Processes for producing polyolefin composition also are provided. Polymers and films also are provided. An example of a catalyst composition is a supported multi-transition-metal catalyst composition that includes: (a) at least two catalyst components selected from the group consisting of: a nonmetallocene catalyst component and a metallocene catalyst component; (b) a support material that has a D50 of less than about 30 microns and a particle size distribution having a D90/D10 ratio of less than about 6; and (c) an activator.Type: GrantFiled: April 4, 2011Date of Patent: January 21, 2014Assignee: Univation Technologies, LLCInventors: Chi-I Kuo, Tae Hoon Kwalk, Dongming Li, Porter Clarke Shannon
-
Patent number: 8623973Abstract: Methods for controlling properties of an olefin polymer using a Group VIII transition metal-modified activator-support are disclosed. The melt index of the polymer can be decreased and the molecular weight of the polymer can be increased via the addition of the transition metal-modified activator-support to the polymerization reactor system.Type: GrantFiled: March 8, 2013Date of Patent: January 7, 2014Assignee: Chevron Phillips Chemical Company LPInventors: Max P. McDaniel, Qing Yang, Tony R. Crain, Kathy S. Collins
-
Publication number: 20130280462Abstract: The polyethylene of the invention is polymerized using a chromium catalyst, and has a weight average molecular weight (Mw) of 30,000 or more at the maximum value in a branching degree distribution curve that shows a molecular weight dependency of short chain branches having 4 or more carbon atoms.Type: ApplicationFiled: December 22, 2011Publication date: October 24, 2013Applicant: JAPAN POLYEHTYLENE CORPORATIONInventors: Yuuichi Kuzuba, Takashi Monoi, Satoshi Kanazawa, Kouichi Ogawa, Takaaki Hattori, Keiichi Yoshimoto
-
Patent number: 8563671Abstract: Method employing a supported metallocene catalyst composition in the production of an isotactic ethylene propylene co-polymer. The composition comprises a metallocene component supported on a particulate silica support having average particle size of 10-40 microns, a pore volume of 1.3-1.6 ml/g, a surface area of 200-400 m2/g. An alkylalumoxane cocatalyst component is incorporated on the support. The isospecific metallocene is characterized by the formula: B(CpRaRb)(FlR?2)MQn??(1) or by the formula: B?(Cp?R?aR?b)(Fl?)M?Q?n???(2) In the formulas Cp and Cp? are substituted cyclopentadienyl groups, Fl and Fl? are fluorenyl groups, and B and B? are structural bridges. R? are substituents at the 2 and 7 positions, Ra and R?a are substituents distal to the bridge, and Rb and R?b are proximal to the bridge. M and M? are transition metals, Q? is a halogen or a C1-C4 alkyl group; and n? is an integer of from 0-4.Type: GrantFiled: September 18, 2012Date of Patent: October 22, 2013Assignee: Fina Technology, Inc.Inventors: William Gauthier, David Rauscher, Jun Tian, Nathan Williams
-
Publication number: 20130274429Abstract: Activating supports may be suitably prepared by the following procedure (a) providing a porous mineral oxide support material, (b) treating the support with a phosphorus-containing compound, (c) treating the support from step (b) with an organometallic compound, (d) heating the functionalized support from step (c) under an inert gas and then under an atmosphere comprising oxygen, (e) fluorinating the support with a fluorinating agent, and (f) recovering an activating support. The activating supports are suitable used in combination with single site catalysts for the polymerization of olefins. The supports are most preferably used in combination with metallocene complexes. The preparative route for the activating supports provides for supported polymerization catalyst systems having excellent activities.Type: ApplicationFiled: January 12, 2012Publication date: October 17, 2013Inventors: Melanie Muron, Gaelle Pannier, Christopher John Whiteoak, Roger Spitz, Christophe Boisson
-
Patent number: 8546496Abstract: The present invention relates to a process for preparing a bimodal polyethylene product in a single loop reactor, comprising polymerizing ethylene monomer and optionally one or more olefin co-monomers in the presence of a single heterogeneous polymerization catalyst consisting of a metallocene-alumoxane catalyst immobilized on a porous support wherein said metallocene comprises only one transition metal. Said polymerization catalyst consists of two physically different fractions of support particles onto which said metallocene-alumoxane catalyst is immobilized.Type: GrantFiled: December 17, 2010Date of Patent: October 1, 2013Assignee: Total Research & Technology FeluyInventor: Martine Slawinski
-
Publication number: 20130245215Abstract: Catalyst compositions for the polymerization of olefins having improved flowability properties are provided.Type: ApplicationFiled: November 10, 2011Publication date: September 19, 2013Applicant: Univation Technologies, LLCInventors: Chi-I Kuo, Agapios Kyriacos Agapiou, David M. Glowczwski, Ghanshyam Ganu H. Patel
-
Patent number: 8524626Abstract: 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: GrantFiled: November 3, 2011Date of Patent: September 3, 2013Assignee: Chevron Phillips Chemical Company LPInventors: Rex E. Murray, Kumudini C. Jayaratne, Qing Yang, Joel L. Martin
-
Patent number: 8524627Abstract: The present invention relates to a process for preparing an activating support for metallocene complexes in the polymerization 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) functionalizing the support with a solution containing a metallic salt; IV) heating the functionalized support of step c) under an inert gas or hydrogen; V) oxidizing 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 polymerization of olefins.Type: GrantFiled: April 29, 2010Date of Patent: September 3, 2013Assignee: Total Research & Technology FeluyInventors: Gaëlle Pannier, Christophe Boisson, Roger Spitz
-
Publication number: 20130225772Abstract: A supported catalyst system comprising a coprecipitated silica-and titania-containing support, comprising alumoxane as acatalyst activating agent, and a metallocene, wherein the supported catalyst system has a Ti content of at least 0.1 wt %.Type: ApplicationFiled: August 16, 2011Publication date: August 29, 2013Applicant: TOTAL RESEARCH & TECHNOLOGY FELUYInventors: Christopher Willocq, Aurélien Vantomme, Martine Slawinski
-
Patent number: 8519069Abstract: The present invention relates to a catalytic complex for olefin metathesis reactions, to a process for its preparation and to its use in olefin metathesis reactions, particularly in ring opening metathesis polymerisation (ROMP) reactions.Type: GrantFiled: July 7, 2010Date of Patent: August 27, 2013Assignee: RIMTEC CorporationInventor: Renata Drozdzak
-
Patent number: 8507621Abstract: 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: GrantFiled: October 30, 2012Date of Patent: August 13, 2013Assignee: Chevron Phillips Chemical Company LPInventors: Kumundini C. Jayaratne, Michael D. Jensen, Qing Yang
-
Patent number: 8501654Abstract: The present invention provides dual catalyst systems containing a metallocene catalyst and a hydrogen scavenging catalyst, and polymerization processes employing these dual catalyst systems. Due to a reduction in hydrogen levels in the polymerization processes, olefin polymers produced from these polymerization processes may have a higher molecular weight, a lower melt index, and higher levels of unsaturation.Type: GrantFiled: June 5, 2012Date of Patent: August 6, 2013Assignee: Chevron Philips Chemical Company LPInventors: Rex E. Murray, William B. Beaulieu, Qing Yang, Errun Ding, Gary L. Glass, Alan L. Solenberger, Steven J. Secora
-
Patent number: 8497330Abstract: Methods for gas phase olefin polymerization are provided. The method can include combining a spray dried catalyst system with a diluent to produce a catalyst slurry. The catalyst system can include a metallocene compound. Ethylene, a continuity additive, and the catalyst slurry can be introduced to a gas phase fluidized bed reactor. The reactor can be operated at conditions sufficient to produce a polyethylene. The spray dried catalyst system can have a catalyst productivity of at least 12,000 grams polyethylene per gram of the catalyst system.Type: GrantFiled: December 22, 2010Date of Patent: July 30, 2013Assignee: Univation Technologies, LLCInventors: F. David Hussein, Kevin J. Cann, Ann M. Schoeb-Wolters, Phuong A. Cao, Bruce J. Savatsky, Eric J. Markel, Daniel P. Zilker, Jr., Garth R. Giesbrecht
-
Patent number: 8487053Abstract: 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: GrantFiled: November 30, 2011Date of Patent: July 16, 2013Assignee: Chevron Phillips Chemical Company LPInventors: 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: 20130172498Abstract: Catalyst compositions containing N,N-bis[2-hydroxidebenzyl]amine transition metal compounds are disclosed. Methods for making these transition metal compounds and for using such compounds in catalyst compositions for the polymerization or oligomerization of alpha olefins also are provided.Type: ApplicationFiled: December 28, 2011Publication date: July 4, 2013Applicant: CHEVRON PHILLIPS CHEMICAL COMPANY LPInventors: Mark L. Hlavinka, Qing Yang, Brooke L. Small, Youlu Yu
-
Patent number: 8450436Abstract: 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: GrantFiled: November 20, 2012Date of Patent: May 28, 2013Assignee: Chevron Phillips Chemical Company LPInventors: 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: 8450435Abstract: The time between shut downs of a gas phase reactor for the polymerization of polyethylene may be significantly increased if the catalyst used is not prepared by impregnating the support with a solution of catalyst in an electron donor; the reaction is controlled using the addition of activator based on polymer production rate and the recycle stream contains a condensed liquid phase in an amount greater than 13 weight %. Operating the reactor in this manner increase the time between cleaning the cooler (heat exchanger) the bed plate, or both from about 4 to 6 months to not less than about 24 months.Type: GrantFiled: June 6, 2011Date of Patent: May 28, 2013Assignee: NOVA Chemicals (International) S.AInventors: John Iatrou, Mark Jay Ziebart, Dale Warren Nagel, Kent Gray Jensen, Benjamin Milton Shaw
-
Patent number: 8450437Abstract: The present techniques relate to catalyst compositions, methods, and polymers encompassing a Group 4 metallocene compound comprising bridging ?5-cyclopentadienyl-type ligands, typically in combination with a cocatalyst, and a activator. The compositions and methods presented herein include ethylene polymers with low melt elasticity.Type: GrantFiled: January 12, 2012Date of Patent: May 28, 2013Assignee: Chevron Phillips Chemical Company LPInventors: Qing Yang, Max P. McDaniel, Joel L. Martin, Youlu Yu, David C. Rohlfing, Michael D. Jensen
-
Patent number: 8445607Abstract: The invention relates to a process for the preparation of a particulate bimodal polyethylene product having a median particle diameter of less than 300 ?m in a serially connected double loop reactor, wherein said polymerization catalyst applied in the polymerization process comprises a particulate metallocene-alumoxane catalyst immobilized on a porous silica support, wherein said polymerization catalyst has a median particle diameter of less than 50 ?m; and whereby the ratio of the median particle diameter of the obtained bimodal polyethylene product to the median particle diameter of the applied polymerization catalyst is less than 30.Type: GrantFiled: December 17, 2010Date of Patent: May 21, 2013Assignee: Total Research & Technology FeluyInventor: Martine Slawinski
-
Patent number: 8435911Abstract: The present invention relates to a new hybrid catalyst system for the polymerization of olefins and to a polymerization process carried out in the presence of said catalyst. The new hybrid catalyst system comprises a tridendate iron compound and a zirconocene having a bridge of at least three carbon atoms connecting two indenyl ligands.Type: GrantFiled: September 18, 2009Date of Patent: May 7, 2013Assignee: Basell Polyolefine GmbHInventors: Harald Schmitz, Shahram Mihan
-
Patent number: 8436112Abstract: The invention is directed to a metallocene catalyst system comprising an inert silica support having pores with a peak pore volume of greater than about 0.115 mL/g at a pore diameter between about 250 Angstroms and about 350 Angstroms, and an alumoxane activator, with the metallocene being bound substantially throughout the support. The activator is grafted to the support in a solvent at a reflux temperature of toluene to obtain an aluminoxane on silica, and a metallocene component is added to make a MCS having a metallocene loading of about 2 wt %. This facilitates the production of metallocene catalyst systems having increased catalytic activity than previously recognized that is at least about 20 percent higher than the catalytic activity for a metallocene loading of about 1 wt % where the activator is grafted to the support at room temperature.Type: GrantFiled: January 14, 2008Date of Patent: May 7, 2013Assignee: Fina Technology, Inc.Inventors: Jun Tian, William Gauthier, David Rauscher, Shady Henry
-
Patent number: 8431659Abstract: A method of producing a prepolymerized catalyst for olefin polymerization comprising a fine powder removal step of removing fine particles from olefin-prepolymerized catalyst particles for olefin polymerization. The prepolymerized catalyst having a low fine particle content is applicable suitably to the field of continuous polymerization of olefins.Type: GrantFiled: December 6, 2011Date of Patent: April 30, 2013Assignee: Sumitomo Chemical Company, LimitedInventors: Tomoaki Goto, Yoshimitsu Onodera
-
Patent number: 8426539Abstract: The present invention discloses an active supported catalyst system comprising: a) one or more non-metallocene catalyst component; b) an alkylating agent; c) an activating functionalised and fluorinated support. It also discloses a method for preparing said active support and its use in the polymerisation of polar and non polar monomers.Type: GrantFiled: July 26, 2006Date of Patent: April 23, 2013Assignees: Total Petrochemicals Research Feluy, Centre National de la Research Scientifique (CNRS)Inventors: Floran Prades, Roger Spitz, Christophe Boisson, Sabine Sirol, Abbas Razavi
-
Patent number: 8426536Abstract: The present invention provides polymerization catalyst compositions employing novel heterodinuclear metallocene compounds. Methods for making these new dinuclear metallocene compounds and for using such compounds in catalyst compositions for the polymerization of olefins are also provided.Type: GrantFiled: February 16, 2012Date of Patent: April 23, 2013Assignee: Chevron Phillips Chemical Company LPInventors: Rex E. Murray, Kumudini C. Jayaratne, Qing Yang, Joel L. Martin, Gary L. Glass
-
Patent number: 8426538Abstract: This invention relates to the field of olefin polymerization catalyst compositions, and methods for the polymerization and copolymerization of olefins, including polymerization methods using a supported catalyst composition. In one aspect, the present invention encompasses a catalyst composition comprising the contact product of a first metallocene compound, a second metallocene compound, at least one chemically-treated solid oxide, and at least one organoaluminum compound. The new resins were characterized by useful properties in impact, tear, adhesion, sealing, extruder motor loads and pressures at comparable melt index values, and neck-in and draw-down.Type: GrantFiled: September 8, 2011Date of Patent: April 23, 2013Assignee: Chevron Phillips Chemical Company LPInventors: Michael D. Jensen, Max P. McDaniel, Joel L. Martin, Elizabeth A. Benham, Randy L. Muninger, Gary G. Jerdee, Ashish M. Sukhadia, Qing R. Yang, Matthew G. Thorn
-
Publication number: 20130090438Abstract: In a process for producing polyethylene having a molecular weight of at least 3×105 g/mol as determined by ASTM 4020, ethylene is contacted under polymerization conditions with a slurry of a catalyst composition comprising a Group 4 metal complex of a phenolate ether ligand, wherein the slurry further includes a scavenger comprising an alkyl magnesium compound.Type: ApplicationFiled: July 1, 2011Publication date: April 11, 2013Applicant: TICONA GMBHInventors: Dominique Robert, Julia Hufen, Kerstin Lüdtke, Jens Ehlers, Gary Diamond, Margarete Lecrec, Guang Zhu
-
Patent number: 8399375Abstract: The invention relates to a supported metallocene catalyst composition and a process for the preparation of polyolefin using the same. A supported metallocene catalyst composition according to the invention is prepared by bringing a compound of a group IV transition metal into contact with an inorganic or organic porous carrier treated with an ionic compound. Advantages of a supported metallocene catalyst composition of the invention include an increase in the catalyst activity during polymerization of slurry and an olefin compound in the vapor phase even at a low content of metallocene metal components within the carrier, and an improvement in solving process problems such as fouling, sheeting, plugging or the like.Type: GrantFiled: March 26, 2009Date of Patent: March 19, 2013Assignees: SK Global Chemical Co., Ltd., SK Innovation Co., Ltd.Inventors: Seungyeol Han, Myungahn Ok, Young-Soo Ko, Chang-il Lee
-
Publication number: 20130046040Abstract: A polyethylene powder has a molecular weight in the range of about 300,000 g/mol to about 2,000,000 g/mol as determined by ASTM-D 4020, an average particle size, D50, between about 300 and about 1500 ?m, and a bulk density between about 0.25 and about 0.5 g/ml. On sintering, the polyethylene powder produces a porous article having a porosity of at least 45% and a pressure drop less than 5 mbar. The porous article is useful in, for example, wastewater aeration and capillary and filtration applications.Type: ApplicationFiled: May 3, 2011Publication date: February 21, 2013Applicant: TICONA LLCInventors: Ramesh Srinivasan, Julia Hufen, Bernhard Forschler, Bjorn Rinker, Jens Ehlers, Louie Wang, Rajesh Bhor, Peter Burke, Meinhard Gusik, Yu Shen
-
Patent number: 8362163Abstract: A supported metal complex comprising the reaction product of a transition metal complex of a polyvalent heteroaryl donor ligand containing at least one ortho-metallated aromatic ligand group and an ethylenically or poly(ethylenically) functionalized particulated organic or inorganic solid, a method for preparing the same and the use thereof as an addition polymerization catalyst.Type: GrantFiled: March 5, 2008Date of Patent: January 29, 2013Assignee: DOW Global Technologies, LLCInventor: Edmund M. Carnahan
-
Publication number: 20130018157Abstract: Method employing a supported metallocene catalyst composition in the production of an isotactic ethylene propylene co-polymer. The composition comprises a metallocene component supported on a particulate silica support having average particle size of 10-40 microns, a pore volume of 1.3-1.6 ml/g, a surface area of 200-400 m2/g. An alkylalumoxane cocatalyst component is incorporated on the support. The isospecific metallocene is characterized by the formula: B(CpRaRb)(FlR?2)MQn??(1) or by the formula: B?(Cp?R?aR?b)(Fl?)M?Q?n.??(2) In the formulas Cp and Cp? are substituted cyclopentadienyl groups, Fl and Fl? are fluorenyl groups, and B and B? are structural bridges. Ra are substituents at the 2 and 7 positions, Ra and R?a are substituents distal to the bridge, and Rb and R?b are proximal to the bridge. M and M? are transition metals, Q? is a halogen or a C1-C4 alkyl group; and n? is an integer of from 0-4.Type: ApplicationFiled: September 18, 2012Publication date: January 17, 2013Applicant: Fina Technology, Inc.Inventor: Fina Technology, Inc.
-
Patent number: 8338324Abstract: The present invention relates to the covalent anchorage of non-coordinating anions on mineral supports to prepare activating supports for the polymerisation of ethylene and alpha-olefins and wherein the activating species is provided by a phosphonium-borate or phosphonium alane pair. The invention also discloses the concomitant covalent anchorage of zwitterionic systems containing both the non-coordinating anion and the counter cation parts of the activating supports.Type: GrantFiled: December 11, 2008Date of Patent: December 25, 2012Assignees: Total Petrochemicals Research Feluy, Centre National de la Recherche ScientifiqueInventors: Abdelkrim El Kadib, Karine Molvinger, Daniel Brunel, Floran Prades, Sabine Sirol
-
Patent number: 8324126Abstract: The present invention relates a process for the preparation of catalytic support and the supported metallocene catalysts used in the production of ethylene homopolymers and ethylene copolymers with ?-olefins, of high and ultra high molecular weight with broad molecular weight distribution, in gas or liquid phase polymerization processes, the latter being in slurry, bulk or suspension, and the products obtained from these processes.Type: GrantFiled: June 27, 2008Date of Patent: December 4, 2012Assignee: Braskem S.A.Inventors: Marcia Silva Lacerda Miranda, Fernanda Oliveira Vieira da Cunha
-
Patent number: 8318873Abstract: 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: GrantFiled: February 3, 2011Date of Patent: November 27, 2012Assignee: Chevron Phillips Chemical Company LPInventors: Kumudini C. Jayaratne, Michael D. Jensen, Qing Yang
-
Patent number: 8314199Abstract: The present invention discloses a homo- or co-polymer of ethylene characterised in that it combines the properties of: a) melt strength MS?0.021 p-0.131 wherein melt strength MS is expressed in N and extruder head pressure p is expressed in MPa, when processed in a rheological extruder through a die with L/D of 30:2 at a rate of 500 s?1 and at temperature of 190° C.; b) long chain branching index g? determined by SEC-VISCO larger than 0.90; c) polydispersity index (Mw/Mn) of at most 7. It also discloses a method to prepare said polyethylene resin.Type: GrantFiled: March 4, 2008Date of Patent: November 20, 2012Assignee: Total Petrochemicals Research FeluyInventors: Jacques Michel, Marc Dupire, Prades Floran
-
Patent number: 8304361Abstract: Fouling in a dispersed phase reactor in the presence of a phosphinimine catalyst and MAO may be reduced by reducing the loading of the phosphinimine catalyst to provide from 0.02 to 0.031 mmol of transition M per g of catalyst while still maintaining a productivity of not less than 2500 g of polymer/gram of catalyst. The catalyst may optionally be used in the presence of an antistatic agent.Type: GrantFiled: May 16, 2011Date of Patent: November 6, 2012Assignee: NOVA Chemical (International) S.A.Inventors: Xiaoliang Gao, Benjamin Milton Shaw, Cliff Robert Baar
-
Patent number: 8298977Abstract: The present invention discloses a catalyst system consisting of a mono- or di-fluorinated metallocene catalyst component of formula and a fluorinated activating support.Type: GrantFiled: April 17, 2007Date of Patent: October 30, 2012Assignee: Total Petrochemicals Research FeluyInventor: Floran Prades
-
Patent number: 8298978Abstract: Single site reactor/catalyst continuity in a dispersed phase reaction in terms of initial activation and subsequent deactivation may be improved by treating the support with a metal salt. The activator and catalyst are then deposited on the treated support. 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: GrantFiled: October 14, 2010Date of Patent: October 30, 2012Assignee: Nova Chemicals (International) S.A.Inventors: Xiaoliang Gao, Billy Gaspar Santos, Peter Phung Minh Hoang, Amy Marie Jones, Benjamin Milton Shaw, Ian Ronald Jobe
-
Patent number: 8299188Abstract: Method employing a supported metallocene catalyst composition in the production of an isotactic ethylene propylene co-polymer. The composition comprises a metallocene component supported on a particulate silica support having average particle size of 10-40 microns, a pore volume of 1.3-1.6 ml/g, a surface area of 200-400 m2/g. An alkylalumoxane cocatalyst component is incorporated on the support. The isospecific metallocene is characterized by the formula: B(CpRaRb)(FlR?2)MQn??(1) or by the formula: B?(Cp?R?aR?b)(Fl?)M?Q?n???(2) In the formulas Cp and Cp? are substituted cyclopentadienyl groups, Fl and Fl? are fluorenyl groups, and B and B? are structural bridges. R? are substituents at the 2 and 7 positions, Ra and R?a are substituents distal to the bridge, and Rb and R?b are proximal to the bridge. M and M? are transition metals, Q? is a halogen or a C1-C4 alkyl group; and n? is an integer of from 0-4.Type: GrantFiled: September 15, 2010Date of Patent: October 30, 2012Assignee: Fina Technology, Inc.Inventors: William Gauthier, David Rauscher, Jun Tian, Nathan Williams
-
Patent number: 8288487Abstract: 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: GrantFiled: July 6, 2010Date of Patent: October 16, 2012Assignee: Chevron Phillips Chemical Company LPInventors: Qing Yang, Max P. McDaniel, Tony R. Crain, Youlu Yu
-
Patent number: 8273677Abstract: A production process of a pre-polymerized catalyst component, comprising steps of (i) contacting a transition metal compound defined by formula [1], an activation agent, an organometallic compound defined by formula [2], and an optional organoaluminum compound with one another, thereby forming a primary polymerization catalyst, and (ii) pre-polymerizing an olefin in the presence of the primary polymerization catalyst; and a process for producing an addition polymer, comprising a step of polymerizing an addition polymerizable monomer in the presence of a pre-polymerized catalyst component produced by the above production process, or in the presence of the pre-polymerized catalyst component and an organoaluminum compound.Type: GrantFiled: March 24, 2011Date of Patent: September 25, 2012Assignee: Sumitomo Chemical Company, LimitedInventor: Takuya Ogane
-
Patent number: 8268944Abstract: 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: GrantFiled: February 15, 2012Date of Patent: September 18, 2012Assignee: Chevron Phillips Company, L.P.Inventors: Qing Yang, Kumudini C. Jayaratne, Michael D. Jensen, Max P. McDaniel, Joel L. Martin, Matthew G. Thorn, Jerry T. Lanier, Tony R. Crain
-
Patent number: 8258247Abstract: The object is to provide a catalyst component for ethylene polymerization which can produce an ethylene polymer of high molecular weight which has substantially only an ethyl branch, and a process for producing the catalyst component for ethylene polymerization which can produce an ethylene polymer of high molecular weight which has substantially only an ethyl branch. A catalyst component for polymerization of ethylene obtained by contacting the following components (A), (B), (C) and (D): component (A): a meso-metallocene compound, component (B): a compound which ionizes a metallocene compound to form an ionic complex, component (C): an organoaluminum compound, and component (D): an electron donating compound, and a process for producing the ethylene polymer by polymerizing ethylene in the presence of the above catalyst component for ethylene polymerization.Type: GrantFiled: February 17, 2009Date of Patent: September 4, 2012Assignee: Sumitomo Chemical Company, LimitedInventor: Yasutoyo Kawashima
-
Patent number: 8242221Abstract: The present invention provides polymerization catalyst compositions employing half-metallocene compounds with a heteroatom-containing ligand bound to the transition metal. Methods for making these hybrid metallocene compounds and for using such compounds in catalyst compositions for the polymerization and copolymerization of olefins are also provided.Type: GrantFiled: January 5, 2012Date of Patent: August 14, 2012Assignee: Chevron Phillips Chemical Company LPInventors: Max P. McDaniel, Matthew G. Thorn, Elizabeth A. Benham
-
Patent number: 8242220Abstract: Copolymer of ethylene and an alpha-olefin having (a) a density in the range 0.900-0.940 g/cm3, (b) a melt index MI2 (2.16 kg, 190° C.) in the range of 0.01-50 g/10 min, (c) a molecular weight distribution (Mw/Mn) in the range 3.5 to 4.5, and (d) a melt elastic modulus G?(G?=500 Pa) in the range 40 to 150 Pa. The copolymer has a melt index MI2 (2.16 kg, 190° C.) Dow Rheology Index (DRI) and melt elastic modulus G?(G?=500 Pa) satisfying the equations of [DRI/MI2]>0 and [DRI/MI2]<0.0225G??0.745.Type: GrantFiled: December 11, 2007Date of Patent: August 14, 2012Assignee: Ineos Europe LimitedInventor: Choon Kool Chai
-
Patent number: 8207280Abstract: The present invention provides dual catalyst systems containing a metallocene catalyst and a hydrogen scavenging catalyst, and polymerization processes employing these dual catalyst systems. Due to a reduction in hydrogen levels in the polymerization processes, olefin polymers produced from these polymerization processes may have a higher molecular weight, a lower melt index, and higher levels of unsaturation.Type: GrantFiled: June 28, 2010Date of Patent: June 26, 2012Assignee: Chevron Phillips Chemical Company LPInventors: Rex E. Murray, William B. Beaulieu, Qing Yang, Errun Ding, Gary L. Glass, Alan L. Solenberger, Steven J. Secora