Silicon Present In Inorganic Oxygen-containing Compound Patents (Class 526/129)
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Publication number: 20120108764Abstract: 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: ApplicationFiled: January 5, 2012Publication date: May 3, 2012Applicant: CHEVRON PHILLIPS CHEMICAL COMPANY LPInventors: Max P. McDaniel, Matthew G. Thorn, Elizabeth A. Benham
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Patent number: 8163854Abstract: A method for the preparation of olefin polymerization catalysts that are the reaction products of the catalytic reaction of surface hydroxyls of a support with a trialkyl silane to afford hydrogen and the corresponding surface bound alkyl silyl ether and at the same time with a strong Lewis acid which support is converted to a silica bound anion that in a second step is fully converted by reaction with QM2 to the desired catalyst. Catalyst compositions are disclosed herein. Processes disclosed herein include processes for the polymerization of olefinically unsaturated monomers comprising contacting a plurality of one or more of the monomers with the catalyst.Type: GrantFiled: September 20, 2010Date of Patent: April 24, 2012Assignee: ExxonMobil Chemical Patents Inc.Inventors: Gary L. Casty, George Rodriguez
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Publication number: 20120095173Abstract: 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: ApplicationFiled: December 6, 2011Publication date: April 19, 2012Applicant: SUMITOMO CHEMICAL COMPANY, LIMITEDInventors: Tomoaki GOTO, Yoshimitsu ONODERA
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Patent number: 8143430Abstract: 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 24, 2011Date of Patent: March 27, 2012Assignee: Chevron Phillips Chemical Company LPInventors: Rex E. Murray, Kumudini C. Jayaratne, Qing Yang, Joel L. Martin, Gary L. Glass
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Patent number: 8138113Abstract: 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: April 26, 2011Date of Patent: March 20, 2012Assignee: Chevron Phillips Chemical Company LPInventors: Qing Yang, Kumudini C. Jayaratne, Michael D. Jensen, Max P. McDaniel, Joel L. Martin, Matthew G. Thorn, Jerry T. Lanier, Tony R. Crain
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Patent number: 8114946Abstract: The present invention provides a polymerization process which is conducted by contacting an olefin monomer and at least one olefin comonomer in the presence of hydrogen and a metallocene-based catalyst composition. Polymers produced from the polymerization process are also provided, and these polymers have a reverse comonomer distribution, low levels of long chain branches, and a ratio of Mw/Mn from about 3 to about 6.Type: GrantFiled: December 18, 2008Date of Patent: February 14, 2012Assignee: Chevron Phillips Chemical Company LPInventors: Qing Yang, Max P. McDaniel, Joel L. Martin, Tony R. Crain, Randy S. Muninger, Jerry T. Lanier, Jeff S. Fodor, Paul J. Deslauriers, Chung C. Tso, David C. Rohlfing
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Patent number: 8110640Abstract: 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: November 18, 2010Date of Patent: February 7, 2012Assignee: Chevron Phillips Chemical Company LPInventors: Max P. McDaniel, Matthew G. Thorn, Elizabeth A. Benham
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Patent number: 8101537Abstract: 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: February 25, 2010Date of Patent: January 24, 2012Assignee: Sumitomo Chemical Company, LimitedInventors: Tomoaki Goto, Yoshimitsu Onodera
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Publication number: 20110319575Abstract: 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: ApplicationFiled: September 8, 2011Publication date: December 29, 2011Applicant: CHEVRON PHILLIPS CHEMICAL COMPANY LPInventors: Michael D. Jensen, Max P. McDaniel, Joel L. Martin, Elizabeth A. Benham, Randy L. Muninger, Gary Jerdee, Ashish M. Sukhadia, Qing Yáng, Matthew G. Thorn
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Patent number: 8084559Abstract: A transition metal complex represented by formula [1], and its production process; a substituent-carrying fluorene compound represented by formula [2], and its production process; an olefin polymerization catalyst component comprising the complex; an olefin polymerization catalyst obtained by contacting the catalyst component with a defined aluminum compound and/or a defined boron compound; and a production process of an olefin polymer using the catalyst:Type: GrantFiled: January 24, 2006Date of Patent: December 27, 2011Assignee: Sumitomo Chemical Company, LimitedInventors: Taichi Senda, Hidenori Hanaoka, Shinya Nakahara, Kenji Sogoh
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Patent number: 8076259Abstract: A process for the preparation of a catalyst paste comprising the following steps: a) obtaining a slurry in an organic solvent containing at least: a1) a support bearing functional groups; a2) a trialkylaluminum of formula (Ra)3Al wherein Ra, equal to or different from each other is a C1-C20 hydrocarbon radical optional containing heteroatoms belonging to groups 13-17 of the periodic table of the elements; a3) a compound of formula (I) (R1)x-A-(OH)y??(I) wherein: A is an atom of group 13 or 15 of the Periodic Table; R1 equal to or different from each other, are C1-C40 hydrocarbon radicals optionally containing heteroatoms belonging to groups 13-17 of the periodic table of the elements; Y is 1 or 2; X is 1 or 2; provided that x+y=3; a4) a transition metal organometallic compound; b) washing the resulting slurry one or more times with oil.Type: GrantFiled: October 1, 2008Date of Patent: December 13, 2011Assignee: Basell Polyolefine GmbHInventors: Bodo Richter, Gregorius Heike
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Publication number: 20110301308Abstract: 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: ApplicationFiled: June 6, 2011Publication date: December 8, 2011Inventors: John Iatrou, Mark Jay Ziebart, Dale Warren Nagel, Kent Gray Jensen, Benjamin Milton Shaw
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Patent number: 8039564Abstract: A method for preparing a catalyst precursor for an olefin polymerization catalyst involves the use of aqueous or alcoholic solutions of a chromium salt and of boric acid and aluminum carboxylate for deposition onto an inorganic support material, such as a silica xerogel. The chromium salt, aluminum carboxylate and boric acid are sufficiently soluble for deposition from a single solution to be effective. The catalyst precursor can be activated by calcination to form a catalyst for homo- or co-polymerisation of ?-olefins which has productivity and melt flow index for the resulting polymer or copolymer which is comparable to results obtained with catalysts prepared by prior art organometallic routes. The activation of the catalyst precursor gives reduced levels of toxic or noxious fumes during activation compared to use of organometallic sources of chromium or aluminum.Type: GrantFiled: October 15, 2008Date of Patent: October 18, 2011Assignee: PQ Silicas UK LimitedInventors: Christine Elizabeth Marsden, Robert Joseph Parker
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Patent number: 8030241Abstract: 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: October 29, 2009Date of Patent: October 4, 2011Assignee: Chevron Phillips Chemical Company, LPInventors: Michael D. Jensen, Max P. McDaniel, Joel L. Martin, Elizabeth A. Benham, Randy Muninger, Gary Jerdee, Ashish M. Sukhadia, Qing Yang, Matthew G. Thorn
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Patent number: 8012903Abstract: Methods are provided to prepare a catalyst system that includes at least one titanium compound, at least one magnesium compound, at least one electron donor compound, at least one activator compound, and at least one silica support material, the at least one silica support material having a median particle size in the range of from 20 to 50 microns with no more than 10% of the particles having a size less than 10 microns and no more than 10% of the particles having a size greater than 50 microns and average pore diameter of at least ?220 angstroms.Type: GrantFiled: April 17, 2008Date of Patent: September 6, 2011Assignee: Univation Technologies, LLCInventors: Maria A. Apecetche, Phuong A. Cao, Michael D. Awe, Ann M. Schoeb-Wolters, Ryan W. Impelman
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Patent number: 7973113Abstract: Catalyst systems and methods of forming the catalyst systems are described herein. The methods generally include contacting a support material with an activator to form a support composition, contacting a component with at least a portion of an aluminum containing compound including TIBAl, wherein the component is selected from the support composition, the transition metal catalyst compound and combinations thereof and contacting the support composition with a transition metal catalyst compound to form a supported catalyst system.Type: GrantFiled: December 21, 2009Date of Patent: July 5, 2011Assignee: Fina Technology, Inc.Inventors: Jun Tian, William Gauthier, Joseph Thorman, Shady Henry
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Patent number: 7960487Abstract: 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: October 1, 2009Date of Patent: June 14, 2011Assignee: Chevron Phillips Chemical Company LPInventors: Qing Yang, Kumudini C. Jayaratne, Michael D. Jensen, Max P. McDaniel, Joel L. Martin, Matthew G. Thorn, Jerry T. Lanier, Tony R. Crain
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Publication number: 20110112262Abstract: 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: ApplicationFiled: September 15, 2010Publication date: May 12, 2011Applicant: Fina Technology, Inc.Inventors: William Gauthier, David Rauscher, Jun Tian, Nathan Williams
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Publication number: 20110105705Abstract: The invention relates to a metallocene supported catalyst composition and a process for the preparation of polyolefin using the same. A metallocene supported 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 metallocene supported 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: ApplicationFiled: March 26, 2009Publication date: May 5, 2011Applicant: SK ENERGY CO., LTD.Inventors: Seungyeol Han, Myungahn Ok, Young-Soo Ko, Chang-il Lee
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Patent number: 7928172Abstract: Compositions useful for activating catalysts for olefin polymerization are-provided. The compositions are derived from at least: a) compound derived from at least (i) carrier having at least one pair of hydrogen bonded hydroxyl groups, (ii) organoaluminum compound, and (iii) Lewis base, such that each of a majority of aluminum atoms in the organoaluminum compound forms chemical bonds with at least two oxygen atoms from the at least one pair of hydrogen bonded hydroxyl groups; and b) Bronsted acid, wherein the molar ratio of the Bronsted acid to the organoaluminum compound is less than or equal to about 2:1.Type: GrantFiled: December 4, 2007Date of Patent: April 19, 2011Assignee: Albemarle CorporationInventors: Lubin Luo, Katherine Wu, Steven P. Diefenbach
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Patent number: 7915360Abstract: The present invention provides a new supported catalyst for olefin polymerization prepared by reacting a novel transition metal compound on a cocatalyst-supported support, in which the transition metal compound is coordinated with a monocyclopentadienyl ligand to which an amido-quinoline group is introduced, a method for preparing the same, and a method for preparing a polyolefin using the same. The transition metal catalyst compound used in the present invention is configured such that an amido group is linked in a cyclic form via a phenylene bridge. Thus, a pentagon ring structure of the transition metal compound is stably maintained, so that monomers easily approach the transition metal compound and the reactivity is also high.Type: GrantFiled: November 15, 2007Date of Patent: March 29, 2011Assignee: LG Chem, Ltd.Inventors: Dae-Sik Hong, Ki-Soo Lee, Yong-Gyu Han, Heon-Yong Kwon, Jong-Sang Park, Joon-Hee Cho, Seon-Kyoung Kim, Choong-Hoon Lee, Eun-Jung Lee, Seung-Whan Jung, Ki-Su Ro
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Patent number: 7915367Abstract: A process for manufacturing a branched polypropylene, said branched polypropylene having a branching index g? of less than 1.00, the process comprising the step of polymerizing propylene and optionally one or more other comonomers under non-supercritical conditions in a reaction vessel, wherein: c. the pressure during the polymerization of propylene and optionally one or more other comonomers in said reaction vessel is at least 45.4 bar; d. the temperature during the polymerization of propylene and optionally one or more other comonomers in said reaction vessel is below 90° C.; and c. the polymerization of propylene and optionally one or more other comonomers is conducted in said reaction vessel in the presence of a catalyst system having a surface area of not more than 350 m2/g, measured according to ISO 9277, and said catalyst system comprises a metallocene catalyst having zirconium as the transition metal.Type: GrantFiled: June 24, 2009Date of Patent: March 29, 2011Assignee: Borealis Technology OyInventors: Eberhard Ernst, Kimmo Hakala, Petri Lehmus
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Patent number: 7915194Abstract: Metal complexes, catalyst compositions containing the metal complexes, and processes for making the metal complexes and the catalyst compositions are described for the manufacture of polymers from ethylenically unsaturated addition polymerizable monomers. The metal complexes have chemical structures corresponding to one of the following formulae: wherein MI and MII are metals; T is nitrogen or phosphorus; P is a carbon, nitrogen or phosphorus atom; groups R1, R2 and R3 may be linked to each other; Y is a divalent bridging group; X, X1, and X2 are anionic ligand groups with certain exceptions; D is a neutral Lewis base ligand; and s, o, k, i, ii, p, m, a, b, c, d, e, t, and y are numbers as further described in the claims.Type: GrantFiled: September 10, 2009Date of Patent: March 29, 2011Assignee: Styron Europe GmbHInventor: Sven K. H. Thiele
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Patent number: 7884165Abstract: 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: July 14, 2008Date of Patent: February 8, 2011Assignee: Chevron Phillips Chemical Company LPInventors: Max P. McDaniel, Matthew G. Thorn, Elizabeth A. Benham
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Patent number: 7879751Abstract: A solid catalyst component for olefin polymerization, comprising titanium atoms, magnesium atoms, halogen atoms and hydrocarbyloxy groups, wherein the following filtrate contains titanium atoms in a concentration of 0.08 mg-Ti/ml-filtrate or lower, measured according to a method comprising the steps of (1) preparing a suspension of the solid catalyst component for olefin polymerization in heptane having a concentration of 0.1 g-solid catalyst component/ml-suspension, (2) heating the suspension at 70° C. for 30 minutes under stirring, (3) filtering the suspension, thereby obtaining a filtrate, and (4) measuring a concentration of titanium atoms contained in the filtrate; and a production process of the solid catalyst component.Type: GrantFiled: December 9, 2008Date of Patent: February 1, 2011Assignee: Sumitomo Chemical Company, LimitedInventor: Shin-ichi Kumamoto
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Patent number: 7875568Abstract: The present invention provides a method for supporting a nonmetallocene olefin polymerization catalyst, comprising the following steps: a carrier reacts with a chemical activator to obtain a modified carrier; a magnesium compound is dissolved in a tetrahydrofuran-alcohol mixed solvent to form a solution, then the modified carrier is added to the solution to perform a reaction, then filtered and washed, dried and suction dried to prepare a composite carrier; a nonmetallocene olefin polymerization catalyst is dissolved in a solvent, and then reacts with said composite carrier, then is washed and filtered, dried and suction dried, to prepare a supported nonmetallocene olefin polymerization catalyst. The present invention further relates to a supported nonmetallocene olefin polymerization catalyst as prepared by this method.Type: GrantFiled: October 21, 2005Date of Patent: January 25, 2011Assignee: Yangzi Petrochemical Company Co., Ltd.Inventors: Houliang Dai, Houping You, Chuanfeng Li, Xiaoli Yao, Lijin Zhou, Xiaoqiang Li, Yarning Wang, Zhonglin Ma, Jiye Bai
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Patent number: 7863213Abstract: A supported catalyst for olefin polymerization comprises a selected ionic activator, a selected organometallic catalyst and a support material. The selected activator must contain an active hydrogen moeity. The organometallic catalyst is characterized by having a phosphinimine ligand and a substituted cyclopentadienyl ligand (which contains from 7 to 30 carbon atoms). The supported catalyst exhibits excellent activity in gas phase olefin polymerizations and may be used under substantially “non-fouling” polymerization conditions.Type: GrantFiled: May 7, 2007Date of Patent: January 4, 2011Assignee: Nova Chemicals (International) S.A.Inventors: Ian McKay, Dusan Jeremic, Grant Berent Jacobsen, Sergio Mastroianni
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Publication number: 20100317813Abstract: The present invention is directed to a supported catalyst comprising 1. a precursor comprising a solid particulate support material in the form of mesoporous silicate structure MCM-48 wherein the silicate structure is treated with an aluminoxane compound and/or an organoaluminum compound and 2. a transition metal complex of a Group 4 transition metal of the periodic system being coordinative connected to two phenoxy-imine ligands. The catalyst is applied in the (co)polymerization of olefins.Type: ApplicationFiled: February 20, 2008Publication date: December 16, 2010Inventors: Peter Tait, Atieh Abu-Raqabah, Rami Bakleh, Eyad Abdulrazk
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Patent number: 7847038Abstract: A method for the preparation of olefin polymerization catalysts that are the reaction products of the catalytic reaction of surface hydroxyls of a support with a trialkyl silane to afford hydrogen and the corresponding surface bound alkyl silyl ether and at the same time with a strong Lewis acid which support is converted to a silica bound anion that in a second step is fully converted by reaction with QM2 to the desired catalyst. Catalyst compositions are disclosed herein. Processes disclosed herein include processes for the polymerization of olefinically unsaturated monomers comprising contacting a plurality of one or more of the monomers with the catalyst.Type: GrantFiled: June 23, 2008Date of Patent: December 7, 2010Assignee: ExxonMobil Chemical Patents Inc.Inventors: Gary L. Casty, George Rodriguez
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Publication number: 20100305284Abstract: The present techniques relate to catalyst compositions, methods, and polymers encompassing a Group 4 metallocene compound comprising bridged ?5-cyclopentadienyl-type ligands, typically in combination with a cocatalyst, and an activator. The bridged ?5-cyclopentadienyl-type ligands are connected by a cyclic substituent.Type: ApplicationFiled: August 13, 2010Publication date: December 2, 2010Applicant: CHEVRON PHILLIPS CHEMICAL COMPANY LPInventors: Qing Yang, Tony R. Crain
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Patent number: 7803887Abstract: A bridged metallocene compound of formula (I) wherein: M is a transition metal; X, is a hydrogen atom, a halogen atom, or a hydrocarbon group optionally containing hetematoms; L is a divalent bridging group; R1 is a linear C1C40 hydrocarbon radical optionally containing hetexoatonis; T1, T2, T3 and T4 are an oxygen or sulfur atom or a C(R18)2 group with the proviso that at least one group between T1 and T2 is an oxygen or a sulfur atom; wherein R18, are hydrogen atoms or a C1-C4O hydrocarbon radical; n is 1, 2 or 3; R4 is a hydrogen atom or a C1-C40 hydro carbon radical; W is an aromatic 5 or 6 membered ring.Type: GrantFiled: March 15, 2006Date of Patent: September 28, 2010Assignee: Basell Polyolefine GmbHInventors: Marco Sacco, Ilya Nifant'ev, Pavel Ivchenko, Vladimir Bagrov, Francesca Focante
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Patent number: 7790820Abstract: This invention relates to the field of olefin polymerization catalyst compositions, and methods for the polymerization and copolymerization of olefins, typically using a supported catalyst composition. In one aspect, this invention encompasses precontacting a metallocene with an olefin or alkyne monomer and an organoaluminum compound, prior to contacting this mixture with the acidic activator-support.Type: GrantFiled: October 15, 2009Date of Patent: September 7, 2010Assignee: Chevron Phillips Chemical Company LPInventors: Michael D. Jensen, Gil R. Hawley, Max P. McDaniel, Tony Crain, Elizabeth A. Benham, Joel L. Martin, Qing Yang
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Patent number: 7781545Abstract: The present invention relates to a process for the catalytic polymerization of olefins comprising the steps of; i) a first polymerization in a first reactor, wherein olefins are polymerized with a particulate catalyst, hydrogen and optional a comonomer in a fluidum of an inert low boiling hydrocarbon medium into an reaction mixture comprising polymerized olefins; and ii) a second polymerization in a second reactor, wherein the polymerized olefins are further polymerized in a fluidized bed and in a moving bed under such conditions that the residence time in the fluidized bed and the residence time in the moving bed are independently controlled to a reactor system for carrying out said process, to the use of the reactor system, the polyolefins obtainable with said method and to the use of these polyolefins.Type: GrantFiled: May 11, 2004Date of Patent: August 24, 2010Assignee: Borealis Technology OyInventors: Gunter Weickert, Bill Benjamin Rudolf Gustafsson
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Patent number: 7776977Abstract: The present invention relates to a supported catalyst composition and a method for making the supported catalyst composition and its use in a process for polymerizing olefin(s). In particular, the invention is directed to a method for making a supported catalyst composition by contacting a supported activator with a bulky ligand and a metal compound.Type: GrantFiled: January 14, 2005Date of Patent: August 17, 2010Assignee: Univation Technologies, LLCInventor: Sun-Chueh Kao
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Publication number: 20100160579Abstract: The present invention provides a polymerization process which is conducted by contacting an olefin monomer and at least one olefin comonomer in the presence of hydrogen and a metallocene-based catalyst composition. Polymers produced from the polymerization process are also provided, and these polymers have a reverse comonomer distribution, low levels of long chain branches, and a ratio of Mw/Mn from about 3 to about 6.Type: ApplicationFiled: December 18, 2008Publication date: June 24, 2010Applicant: Chevron Phillips Chemical Company LPInventors: Qing Yang, Max P. McDaniel, Joel L. Martin, Tony R. Crain, Randy S. Muninger, Jerry T. Lanier, Jeff S. Fodor, Paul J. Deslauriers, Chung C. Tso, David C. Rohlfing
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Patent number: 7741417Abstract: A process for polymerizing propylene is provided. The process comprises contacting propylene and optionally one or more monomers with a catalyst system comprising a bis-indenyl Group 4 metallocene compound supported on silica, the silica treated with one or more organoaluminum compounds and one or more heterocyclic compounds, under slurry conditions in the presence of hydrogen at a temperature of about 50° C. to about 160° C. and a pressure of from about 3 MPa to about 5 MPa to provide a catalyst activity of greater than 30,000 pounds of product per pound of catalyst; and then recovering isotactic polypropylene having a melt flow rate of 20 dg/min or less as measured according to ASTM D-1238 at 230° C. and 2.16 kg.Type: GrantFiled: August 31, 2006Date of Patent: June 22, 2010Assignee: ExxonMobil Chemical Patents Inc.Inventors: Gary L. Casty, Evan J. Piland
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Patent number: 7732542Abstract: This invention relates to catalyst compositions, methods, and polymers encompassing at least one Group 4 metallocene compound comprising 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 low levels of long chain branching.Type: GrantFiled: November 18, 2009Date of Patent: June 8, 2010Assignee: Chevron Phillips Chemical Company, LPInventors: Qing Yang, Michael D. Jensen, Joel L. Martin, Matthew G. Thorn, Max P. McDaniel, Youlu Yu, David C. Rohlfing
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Patent number: 7705095Abstract: A process for the polymerisation of olefin monomers selected from (a) ethylene, (b) propylene (c) mixtures of ethylene and propylene and (d) mixtures of (a), (b) or (c) with one or more other alpha-olefins is performed in a polymerisation reactor in the presence of a supported polymerisation catalyst characterised in that prior to injection into the reactor said supported polymerisation catalyst in the form of a powder is contacted with an inert hydrocarbon liquid in a quantity sufficient to maintain said catalyst in powder form. The preferred inert hydrocarbon liquid is hexane. The supported polymerisation catalyst is preferably a supported metallocene catalyst. According to the process of the prescrit invention the level of fines associated with the polymer products is reduced in particular the level of fines having a diameter<125 ?m and microfines of diameter<50 ?m.Type: GrantFiled: December 8, 2004Date of Patent: April 27, 2010Assignee: Ineos Europe LimitedInventors: Brian Stephen Kimberley, Gerard Lacane, Sergio Mastroianni
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Patent number: 7678726Abstract: A supported polymerization catalyst system is prepared by a method comprising the following steps: (i) addition of a cocatalyst to a porous support, (ii) mixing a polymerisation catalyst with a polymerisable monomer, and (iii) contacting together the components resulting from steps (i) and (ii). The porous support is preferably silica and the polymerisation catalyst is preferably a metallocene. The polymerisable monomer is typically 1-hexene and the supported catalyst system provides advantages a slowly decaying activity profile particularly when operating in the gas phase.Type: GrantFiled: August 4, 2004Date of Patent: March 16, 2010Assignee: Innovene Europe LimitedInventors: Grant B. Jacobsen, Brian S. Kimberley, Sergio Mastroianni
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Patent number: 7671149Abstract: The present invention provides a process for preparing a catalyst useful in gas phase polymerization of olefins wherein the hydrogen response of the catalyst can be improved by using a ketone as the electron donor in the catalyst. The catalyst consists of compounds of Ti, Mg, Al and a ketone preferably supported on an amorphous support.Type: GrantFiled: June 10, 2008Date of Patent: March 2, 2010Assignees: Nova Chemical Corporation, INEOS Europe LimitedInventors: Mark Kelly, Brian Stephen Kimberley
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Patent number: 7671148Abstract: Process for producing a catalyst system, which comprises the following steps: A) provision of a mixture of at least two different organic transition metal compounds, at least one hydrolyzed organoaluminum compound and a solvent and impregnation of a dry porous support component with the mixture from step A), with the total volume of the mixture being from 0.6 to 1.5 times the total pore volume of the support component, and also catalyst systems obtainable in this way and their use for olefin polymerization.Type: GrantFiled: April 21, 2005Date of Patent: March 2, 2010Assignee: Basell Polyolefine GmbHInventors: Shahram Mihan, Harald Schmitz
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Patent number: 7662895Abstract: Disclosed herein is an elastomeric composition comprising propylene, the composition further comprising a peak melting point temperature below about 110° C., a tensile set of 40% or less, and greater than or equal to about 60% [r]dyads, based on the total number of dyads present in the composition. A process to produce an elastomeric composition is also disclosed.Type: GrantFiled: November 22, 2005Date of Patent: February 16, 2010Assignee: ExxonMobil Chemical Patents Inc.Inventor: Patrick Brant
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Publication number: 20100029872Abstract: This invention relates to the field of olefin polymerization catalyst compositions, and methods for the polymerization and copolymerization of olefins, typically using a supported catalyst composition. In one aspect, this invention encompasses precontacting a metallocene with an olefin or alkyne monomer and an organoaluminum compound, prior to contacting this mixture with the acidic activator-support.Type: ApplicationFiled: October 15, 2009Publication date: February 4, 2010Applicant: CHEVRON PHILLIPS CHEMICAL COMPANY LPInventors: Michael D. Jensen, Gil R. Hawley, Max P. McDaniel, Tony Crain, Elizabeth A. Benham, Joel L. Martin, Qing Yang
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Patent number: 7649063Abstract: Pulverulent solid which consists essentially of at least one metal alkyl compound bound chemically and/or physically to a finely divided, porous, mechanically stable and chemically inert support, has a proportion by weight of metal alkyl compound of at least 5% by weight, based on the support, and has an angle of repose, determined in accordance with ISO 4324, of up to 48°. The solid allows trouble-free metering as active component into a reactor.Type: GrantFiled: October 9, 2004Date of Patent: January 19, 2010Assignee: Basell Polyolefine GmbHInventors: Shahram Mihan, Rosendorfer Philipp, Rainer Karer, Martin Schneider, Peter Eck
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Patent number: 7638586Abstract: A process for polymerizing ethylene is disclosed. The process comprises polymerizing ethylene in a slurry reaction in the presence of a catalyst system which comprises an activator and an indenoindolyl transition metal complex on a support material. The catalyst system is slurried with an inert solvent prior to addition to the reactor. The process provides polyethylene with good bulk density.Type: GrantFiled: September 26, 2006Date of Patent: December 29, 2009Assignee: Equistar Chemicals, LPInventors: Shaotian Wang, Kenneth J. Klug
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Patent number: 7632901Abstract: Methods of making supported chromium catalyst systems and processes of polymerizing ethylene using the supported chromium catalyst systems are disclosed. A method of forming a catalyst system in a polymerization reactor includes contacting a supported chromium catalyst and a metal alkyl cocatalyst by cofeeding the catalyst and cocatalyst to the reactor or feeding the catalyst and cocatalyst separately to the reactor, to form a catalyst system. The catalyst and cocatalyst are not pre-contacted prior to the feeding or cofeeding step. The catalyst system can be contacted with ethylene and optional alpha-olefin comonomer to form polyethylene.Type: GrantFiled: June 6, 2003Date of Patent: December 15, 2009Assignee: ExxonMobil Chemical Patents Inc.Inventors: Stanley J. Katzen, Zerong Lin, Anthony N. Speca, James A. Kendrick, Scott T. Roger
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Patent number: 7629284Abstract: This invention relates to the field of olefin polymerization catalyst compositions, and methods for the polymerization and copolymerization of olefins, typically using a supported catalyst composition. In one aspect, this invention encompasses precontacting a metallocene with an olefin or alkyne monomer and an organoaluminum compound, prior to contacting this mixture with the acidic activator-support.Type: GrantFiled: August 27, 2007Date of Patent: December 8, 2009Assignee: Chevron Phillips Chemical Company, LPInventors: Michael D. Jensen, Gil R. Hawley, Max P. McDaniel, Tony Crain, Elizabeth A. Benham, Joel L. Martin, Qing Yang
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Patent number: 7619047Abstract: 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 22, 2006Date of Patent: November 17, 2009Assignee: Chevron Phillips Chemical Company, LPInventors: Qing Yang, Kumudini C. Jayaratne, Michael D. Jensen, Max P. McDaniel, Joel L. Martin, Matthew G. Thorn, Jerry T. Lanier, Tony R. Crain
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Patent number: 7598201Abstract: The invention relates to a process for preparing an essentially spherical support for olefin polymerization catalysts, which comprises the steps: preparation of a hydrogel comprising a cogel of silicon oxide and at least one further metal oxide, if appropriate, washing of the hydrogel until the content of alkali metal ions is less than 0.1% by weight, based on the weight of solids, extraction of the water from the hydrogel until the water content is less than 5% by weight, based on the total content of liquid, and drying of the hydrogel to form a xerogel. According to the invention, the extraction step comprises at least one first extraction with a first organic solvent which is at least partially miscible with water down to a water content of 50% by weight, followed by at least one second extraction with a second organic solvent which is at least partially miscible with water.Type: GrantFiled: December 4, 2006Date of Patent: October 6, 2009Assignee: Basell Polyolefine GmbHInventors: Christoph Kiener, Ingo Treffkorn, Guido Funk
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Patent number: RE41785Abstract: The present invention relates to a Group 15 containing metal catalyst compound having a substituted hydrocarbon leaving group, a catalyst system and a supported catalyst system thereof and to a process for polymerizing olefin(s) utilizing them.Type: GrantFiled: February 12, 2004Date of Patent: September 28, 2010Assignee: Univation Technologies, LLCInventor: David H. McConville