At Least One Group Ivb Metal Atom (ti, Zr, Hf) And At Least One Group Vb Meta L (v, Nb, Ta) Patents (Class 526/116)
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Publication number: 20110015356Abstract: An oxygen-bridged bimetallic complex of the general formula (I) Cp2R1M1-O-M2R22Cp??(I), wherein Cp is independently a cyclopentadienyl, indenyl or fluorenyl ligand which can be substituted, or a ligand isolobal to cyclopentadienyl, R1, R2 independently are halide, linear or branched or cyclic alkyl, aryl, amido, phosphido, alkoxy or aryloxy groups, which can be substituted, M1 is Zr, Ti or Hf, and M2 is Ti, Zn, Zr or a rare earth metal. The complex can be useful as a polymerization catalyst.Type: ApplicationFiled: September 10, 2010Publication date: January 20, 2011Inventors: Herbert W. Roesky, Prabhuodeyara M. Gurubasavaraj
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Patent number: 7863210Abstract: 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: December 28, 2007Date of Patent: January 4, 2011Assignee: Chevron Phillips Chemical Company LPInventors: Rex E. Murray, Kumudini C. Jayaratne, Qing Yang, Joel L. Martin
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Publication number: 20100324236Abstract: 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: ApplicationFiled: June 23, 2009Publication date: December 23, 2010Applicant: 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: 7842763Abstract: 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 6, 2008Date of Patent: November 30, 2010Assignee: 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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Publication number: 20100292418Abstract: A process for producing an olefin-based polymer, said process comprising polymerizing at least one monomer, in the gas phase, or in a slurry process, in the presence of at least the following components: A) at least one catalyst; B) at least one cocatalyst; C) a composition comprising at least one compound selected from formula (I), and/or at least one compound selected from formula (II): (R1CO2)2AlOH ??(I), (R2)xN(R3OH)y ??(II); wherein R1 is a hydrocarbon radical containing from 13 to 25 carbons; R2 is a hydrocarbon radical containing from 14 to 26 carbons; R3 is a hydrocarbon radical containing from 1 to 4 carbons; and x+y=3, and x has a value of 1 or 2.Type: ApplicationFiled: December 19, 2008Publication date: November 18, 2010Applicant: Dow Global Technologies Inc.Inventors: Robert J. Jorgensen, Burkhard E. Wagner, Michael D. Turner
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Patent number: 7816478Abstract: A thick film and process to prepare polyethylene useful for the film are disclosed. Ethylene is polymerized in two reaction zones with a C6-C10 ?-olefin in the presence of a catalyst system comprising an activator, a supported bridged zirconium complex, and a supported non-bridged zirconium complex. The process yields medium density to linear low density polyethylene having a melt index from 0.20 to 1.0 dg/min. Thick films from the polyethylene have a superior combination of high impact strength and high modulus.Type: GrantFiled: September 3, 2008Date of Patent: October 19, 2010Assignee: Equistar Chemicals, LPInventors: Bradley P. Etherton, Stephen M. Imfeld, Mohan Sasthav
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Patent number: 7807762Abstract: The present invention relates to a catalyst composition comprising a novel structure of a Group 4 transition metal compound, to a method for preparing the same, and to a method for preparing a polyolefin using the catalyst composition. The method for preparing a polyolefin according to the present invention can be used for preparing a polyolefin having a high molecular weight and high copolymerizability with a high activity even at a high polymerization temperature and for preparing a polyolefin having a double composition distribution.Type: GrantFiled: December 29, 2006Date of Patent: October 5, 2010Assignee: LG Chem, Ltd.Inventors: Choong-Hoon Lee, Eun-Jung Lee, Seung-Whan Jung, Jung-A Lee, Bo-Ram Lee, Bun-Yeoul Lee
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Patent number: 7776978Abstract: A process for producing a 1-butene polymer comprising the step of polymerizing 1-butene in the presence of a catalyst system obtainable by contacting: b) at least a metallocene compound of formula (Ia) in the meso or meso-like form: wherein M is an atom of a transition metal p is an integer from 0 to 3, X, same or different, is a hydrogen atom, a halogen atom, or a hydrocarbon group.Type: GrantFiled: June 10, 2005Date of Patent: August 17, 2010Assignee: Basell Polyolefine GmbHInventors: Maria Silvia Tonti, Luigi Resconi
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Patent number: 7767771Abstract: A process is disclosed for the preparation of zinc alkyl chain growth products via a catalysed chain growth reaction of an alpha-olefin on a zinc alkyl, wherein the chain growth catalyst system employs a group 3-10 transition metal, or a group 3 main group metal, or a lanthanide or actinide complex, and optionally a suitable activator. The products can be further converted into alpha-olefins by olefin displacement of the grown alkyls as alpha-olefins from the zinc alkyl chain growth product, or into primary alcohols, by oxidation of the resulting zinc alkyl chain growth product to form alkoxide compounds, followed by hydrolysis of the alkoxides.Type: GrantFiled: June 28, 2006Date of Patent: August 3, 2010Assignee: Ineos Europe LimitedInventors: George Johan Peter Britovsek, Steven Alan Cohen, Vernon Charles Gibson
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Publication number: 20100168349Abstract: A production process of an ?-olefin polymerization catalyst, comprising the steps of (1) reducing a titanium compound represented by a defined formula with an organomagnesium compound in the presence of an Si—O bond-containing silicon compound, (2) contacting the resultant solid catalyst component precursor, a halogenating compound and an internal electron donor with one another, and (3) contacting the resultant solid catalyst component, an organoaluminum compound and a Si-containing external electron donor represented by a defined formula with one another; and a production process of an olefin polymer using the above catalyst.Type: ApplicationFiled: December 4, 2009Publication date: July 1, 2010Applicant: SUMITOMO CHEMICAL COMPANY, LIMITEDInventor: Yasuki FUJIWARA
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Patent number: 7741420Abstract: This invention relates to a process to polymerize olefins comprising contacting, under supercritical conditions, olefin monomers with a catalyst compound, an activator, optional comonomer, and optional hydrocarbon diluent or solvent.Type: GrantFiled: June 20, 2005Date of Patent: June 22, 2010Assignee: ExxonMobil Chemical Patents Inc.Inventor: Patrick Brant
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Patent number: 7718566Abstract: A catalyst composition and method for olefin polymerization are provided. In one aspect, the catalyst composition is represented by the formula ?a?b?gMXn wherein M is a metal; X is a halogenated aryloxy group; ? and ? are groups that each comprise at least one Group 15 atom; ? is a linking moiety that forms a chemical bond to each of ? and ?; and a, b, g, and n are each integers from 1 to 4.Type: GrantFiled: November 25, 2008Date of Patent: May 18, 2010Assignee: Univation Technologies, LLCInventors: Timothy T. Wenzel, Zondra Dee Dixon
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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: 7662894Abstract: A catalyst composition for polymerizing olefins to polymers having bimodal molecular weight distribution comprises two transition metal-containing metallocene compounds, a magnesium compound, an alcohol, an aluminum containing co-catalyst and a polymeric support. The transition metal in one of the metallocene compounds is zirconium and the transition metal in the second metallocene compound is selected from the group consisting of titanium, vanadium and hafnium. Polyolefin polymers made using the catalyst composition have broad molecular weight distributions and are useful in film and blow molding applications.Type: GrantFiled: December 19, 2006Date of Patent: February 16, 2010Assignee: Saudi Bosic Industries CorporationInventors: Orass Hamed, Akhlaq Moman, Atieh Abu-Raqabah
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Patent number: 7638584Abstract: A process for polymerizing ethylene is disclosed. The process comprises polymerizing ethylene in the presence of a catalyst system which comprises a bridged indenoindolyl transition metal complex on a support material, an alkylalumoxane, a titanium tetralkoxide, and a branched alkyl aluminum compound. The process provides polyethylenes with low density from ethylene alone.Type: GrantFiled: June 20, 2006Date of Patent: December 29, 2009Assignee: Equistar Chemicals, LPInventors: Sandor Nagy, Barbara M. Tsuie, Ronald J. Clemons
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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: 7601787Abstract: A process for polymerizing ethylene is disclosed. The polymerization is performed in the presence of a Ziegler-Natta catalyst system in two slurry reaction zones. Most of the polyethylene (70-95 wt. %) is produced in one of the zones, while a smaller fraction is produced in the other zone. The ratio of the weight average molecular weight of the smaller fraction to that of the larger fraction is greater than 8:1. The resulting polyethylene blend, which should have both high melt strength and high extrudate swell, will be useful for blow-molding applications.Type: GrantFiled: November 30, 2006Date of Patent: October 13, 2009Assignee: Equistar Chemicals, IPInventors: Harilaos Mavridis, Manivakkam J. Shankernararayanan
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Patent number: 7566677Abstract: A method for preparing a spray dried catalyst and a low viscosity, low foam spray dried catalyst system for olefin polymerization are provided. In one aspect, the method includes preparing a catalyst system including one or more components selected from metallocenes, non-metallocenes, and activators, adding mineral oil to the catalyst system to form a slurry, and adding one or more liquid alkanes having three or more carbon atoms to the slurry in an amount sufficient to reduce foaming and viscosity of the slurry. In one aspect, the catalyst system includes one or more catalysts selected from metallocenes, non-metallocenes, and a combination thereof, wherein the catalyst system is spray dried. The system further includes mineral oil to form a slurry including a catalyst system, and one or more liquid alkanes having three or more carbon atoms in an amount sufficient to reduce foaming and viscosity of the slurry.Type: GrantFiled: April 10, 2007Date of Patent: July 28, 2009Assignee: Univation Technologies, LLCInventors: Natarajan Muruganandam, Kersten Anne Terry, Michael D. Awe, John H. Oskam
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Patent number: 7517940Abstract: Provided is catalyst composition including a transition metal complex precatalyst represented by Formula 1; a first cocatalyst represented by Formula 2 which is an alkylaluminum compound; and a second cocatalyst represented by Formula 3 which is a salt compound comprising a Bronsted acid cation and a noncoordinating, compatible anion. Here, R1, R2, R3, R4, E, Q1, Q2 and M are defined in the specification. Al(R6)3??Formula 2 Here, R6 is defined in the specification. [L-H]+[ZA4]???Formula 3 Here, L, [L-H]+, Z and A are defined in the specification. A catalyst composition including binuclear transition metal complexes, an alkylaluminum compound, and a salt compound including a Bronsted acid cation, and a noncoordinating, compatible anion, and a method of preparing the catalyst composition are provided.Type: GrantFiled: February 1, 2007Date of Patent: April 14, 2009Assignee: LG Chem, Ltd.Inventors: Eunjung Lee, Choong Hoon Lee, Seungwhan Jung, Jung A Lee, Boram Lee
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Publication number: 20090054606Abstract: 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: October 6, 2008Publication date: February 26, 2009Inventors: 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: 7479529Abstract: A catalyst composition and method for olefin polymerization are provided. In one aspect, the catalyst composition is represented by the formula ?a?b?gMXn wherein M is a metal; X is a halogenated aryloxy group; ? and ? are groups that each comprise at least one Group 14 to Group 16 atom; ? is a linking moiety that forms a chemical bond to each of ? and ?; and a, b, g, and n are each integers from 1 to 4.Type: GrantFiled: December 4, 2006Date of Patent: January 20, 2009Assignee: Univation Technologies, LLCInventors: Timothy T. Wenzel, Zondra Dee Dixon
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Publication number: 20080312390Abstract: A process for preparing polypropylene compositions having high impact strength at low temperatures is disclosed in which the reaction is catalyzed by Ziegler-Natta/metallocene hybrid catalysts by the in-situ polymerization of one or more olefins of the formula CH2?CHR, in which R is hydrogen or an alkyl, cycloalkyl or aryl group having from 1 to 10 carbon atoms, and more specifically comprises preparing an olefin polymer by Ziegler-Natta catalyst components of the titanium or vanadium/metallocene hybrid catalysts while the metallocene components are inactivated beforehand by catalyst inactivators; and polymerizing one or more olefins in the presence of the above olefin polymer, followed by a reactivation of the metallocene components.Type: ApplicationFiled: June 14, 2007Publication date: December 18, 2008Inventors: Jinyong Dong, Bochao Zhu, Zhichao Han, Changjun Zhang, Hui Niu, Shaoyi Wei, Jiguang Liu, Peihong Yao, Hongying Wang, Xiaojun Li, Dujin Wang, Pingsheng Zhang, Yajie Zhu, Junji Jia, Chunbo Huang
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Publication number: 20080287617Abstract: This invention relates to a catalyst system comprising: an activator, such as an aluminum alkyl, alumoxane or combinations thereof, a first catalyst precursor prepared by contacting compound (I) represented by the formula: with an optionally substituted alkyl or optionally substituted aryl alcohol; wherein Z-O is a support material, where O is oxygen and Z is Si, Ti, Al, Sn, Fe, Ga, Zr, B, Mg or Cr; each X is, independently, nitrogen, oxygen phosphorous, or sulfur, provided that both X's are not each oxygen; each n is, independently, 1 or 2, provided the total of n=3; each R is, independently, an alkyl group, a substituted alkyl group, an aryl group, or a substituted aryl group, provided at least one R group is an aryl or substituted aryl group; and a second catalyst precursor, wherein the second catalyst precursor is a metallocene compound. This invention also relates to the use of the above catalyst system to polymerize olefins and other monomers.Type: ApplicationFiled: April 9, 2008Publication date: November 20, 2008Inventor: Matthew William Holtcamp
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Patent number: 7439312Abstract: Branched crystalline polypropylene compositions and methods for the preparation of branched crystalline polypropylene compositions are provided. For example, described herein is a process of preparing a branched crystalline polypropylene composition that includes combining two or more different metallocene catalyst compounds with a polymerization medium that includes propylene, for a time sufficient to provide branched crystalline polypropylene that has from 0.0 wt % to 2.0 wt % ethylene and a heat of fusion of 70 J/g or more.Type: GrantFiled: October 10, 2003Date of Patent: October 21, 2008Assignee: ExxonMobil Chemical Patents Inc.Inventors: Palanisamy Arjunan, Thottinal A. Mathew, Patrick Brant, James C. Vizzini
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Patent number: 7410926Abstract: The present invention relates to a supported, treated catalyst system and its use in a process for polymerizing olefin(s). More particularly, it provides a supported, treated catalyst system produced by a process comprising the steps of: (a) forming a supported bimetallic catalyst system comprising a first catalyst component and a metallocene catalyst compound; and (b) contacting the supported bimetallic catalyst system of (a) with at least one methylalumoxane-activatable compound.Type: GrantFiled: December 30, 2003Date of Patent: August 12, 2008Assignee: Univation Technologies, LLCInventor: Sun-Chueh Kao
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Patent number: 7365137Abstract: A multistep process for the polymerization of one or more olefins comprising a first step of polymerizing one or more of said olefins in the presence of a catalyst of the Ziegler-Natta type, a step wherein the polymer obtained in the first step is contacted with a catalyst system comprising an half-sandwich metallocene compound, followed by a second polymerization step. The amount of homo- or copolymer of olefins produced in the first polymerization step is between 10% to 90% by weight of the total amount of polymer produced.Type: GrantFiled: July 11, 2002Date of Patent: April 29, 2008Assignee: Basell Polyolefine GmbHInventors: Luigi Resconi, Giovanni Baruzzi
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Patent number: 7323524Abstract: The invention provides a process for polymerising olefins to branched polyolefins in the presence of a polymerisation catalyst and a cocatalyst, wherein the cocatalyst produces 1-octene in a selectivity greater than 30%.Type: GrantFiled: December 19, 2003Date of Patent: January 29, 2008Assignee: Sasol Technology (PTY) LimitedInventors: Kevin Blann, Deon De Wet-Roos, John Thomas Dixon
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Patent number: 7312283Abstract: Catalyst compositions comprising a first metallocene compound, a second metallocene compound, an activator-support, and an organoaluminum compound are provided. Methods for preparing and using such catalysts to produce polyolefins are also provided. The compositions and methods disclosed herein provide ethylene polymers having a HLMI of from about 0.5 to about 25, a polymer density of from about 0.920 to about 0.965, and a polydispersity of from about 3.0 to about 30.Type: GrantFiled: August 22, 2005Date of Patent: December 25, 2007Assignee: Chevron Phillips Chemical Company LPInventors: Joel L. Martin, Matthew G. Thorn, Max P. McDaniel, Michael D. Jensen, Qing Yang, Paul J. DesLauriers, Mark E. Kertok
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Patent number: 7294681Abstract: This invention relates to a polymer of one or more C3 to C40 olefins, optionally one or more diolefins, and less than 15 mole % of ethylene, and polymerization processes for producing the same.Type: GrantFiled: October 15, 2003Date of Patent: November 13, 2007Assignee: ExxonMobil Chemical Patents Inc.Inventors: Peijun Jiang, Armenag Hagop Dekmezian, Jo Ann Marie Canich, Charles Lewis Sims, Ramin Abhari, Cesar Alberto Garcia-Franco, David Raymond Johnsrud
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Patent number: 7294600Abstract: The present invention relates to a supported metallocene catalyst used for preparing polyolefin whose physical properties and molecular weight distribution can be easily controlled, a method for preparing the same, and a method for preparing polyolefin using the same, more particularly to a support metallocene catalyst wherein at least two kinds of metallocenic transition compounds are supported on a metal oxide such as silica, a method for preparing the same, and a method for preparing polyolefin using the same.Type: GrantFiled: March 24, 2004Date of Patent: November 13, 2007Assignee: LG Chem, Ltd.Inventors: Ki-Soo Lee, Hyo-Sun Lee, Eun-Jung Lee, Sang-Woo Lee, Choong-Hoon Lee
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Patent number: 7276566Abstract: A method for preparing a spray dried catalyst and a low viscosity, low foam spray dried catalyst system for olefin polymerization are provided. In one aspect, the method includes preparing a catalyst system including one or more components selected from metallocenes, non-metallocenes, and activators, adding mineral oil to the catalyst system to form a slurry, and adding one or more liquid alkanes having three or more carbon atoms to the slurry in an amount sufficient to reduce foaming and viscosity of the slurry. In one aspect, the catalyst system includes one or more catalysts selected from metallocenes, non-metallocenes, and a combination thereof, wherein the catalyst system is spray dried. The system further includes mineral oil to form a slurry including a catalyst system, and one or more liquid alkanes having three or more carbon atoms in an amount sufficient to reduce foaming and viscosity of the slurry.Type: GrantFiled: January 20, 2006Date of Patent: October 2, 2007Assignee: Univation Technologies, LLCInventors: Natarajan Muruganandam, Kersten Anne Terry, Michael D. Awe, John H. Oskam
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Patent number: 7229943Abstract: A polymerisation catalyst comprising (1) a transition metal compound of Formula A, and optionally (2) an activating quantity of a Lewis acid activator. Z is a five-membered heterocyclic group containing at least one carbon atom, at least one nitrogen atom and at least one other hetero atom selected from nitrogen, sulphur and oxygen, the remaining atoms in the ring being nitrogen or carbon; M is a metal from Group 3 to 11 of the Periodic Table or a lanthanide metal; E1 and E2 are divalent groups from (i) aliphatic hydrocarbon, (ii) alicyclic hydrocarbon, (iii) aromatic hydrocarbon, (iv) alkyl substituted aromatic hydrocarbon (v) heterocyclic groups and (vi) heterosubstituted derivatives of groups (i) to (v); D1 and D2 are donor groups; X is an anionic group, L is a neutral donor group; n=m=zero or 1; y and z are zero or integers. The catalysts are useful for polymerising or oligomerising 1-olefins.Type: GrantFiled: March 18, 2004Date of Patent: June 12, 2007Assignee: Innovene Europe LimitedInventors: Vernon Charles Gibson, Atanas Kostadinov Tomov
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Patent number: 7223824Abstract: A multinuclear transition metal compound which has two or more catalytic active sites, and is useful in preparing the olefin polymer and copolymer, is disclosed. The multinuclear transition metal compound for olefin polymerization includes two or more metals, and at least one ligand having a cyclopentadienyl moiety, which connects the two or more metals. The preferable multinuclear transition metal catalyst for olefin polymerization includes the first transition metal, the first ? ligand having a cyclopentadienyl moiety, which is coordinated to the first transition metal, and the second transition metal to which the second ? ligand having a cyclopentadienyl moiety is coordinated, wherein the second transition metal is bonded to the first ?-ligand via a sigma (?) bond.Type: GrantFiled: June 30, 2005Date of Patent: May 29, 2007Assignee: Daelim Industrial Co., Ltd.Inventors: Sah-Mun Hong, Sung-Woo Kang, Young-Jae Jun, Jin-Sook Oh, Hyun-Ki Yoon
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Patent number: 7223822Abstract: Disclosed is a process for producing branched polymers including at least 50 mol % C3–C40 olefins. The process may include: (1) feeding a first catalyst, an activator, and one or more C2–C40 olefins into a first reaction zone at a temperature of greater than 70° C. and a residence time of 120 minutes or less to produce a product; (2) feeding the product a second catalyst, and an activator into a second reaction zone at a temperature of greater than 70° C., and a residence time of 120 minutes or less. One of the catalysts should be chosen to produce a polymer having a weight average molecular weight of 100,000 or less and a crystallinity of 20% or less. The other catalyst should be chosen to producing a polymer having a weight average molecular weight of 100,000 or less and a crystallinity of 20% or more.Type: GrantFiled: April 15, 2004Date of Patent: May 29, 2007Assignee: ExxonMobil Chemical Patents Inc.Inventors: Ramin Abhari, Charles Lewis Sims, Peijun Jiang, David Raymond Johnsrud, Jo Ann Marie Canich
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Patent number: 7220805Abstract: There are provided (1) a process for producing a contact product, which comprises the step of contacting at least a phthalocyanine complex, a porphyrin complex, or their combination with a surfactant; (2) a catalyst component for addition polymerization, which comprises said contact product; (3) a process for producing a catalyst for addition polymerization, which comprises the step of contacting said catalyst component, a compound of a metal atom of Groups 3 to 12 or the lanthanide series, and an optional organoaluminum compound with one another; and (4) a process for producing an addition polymer, which comprises the step of polymerizing an addition polymerizable monomer in the presence of said catalyst.Type: GrantFiled: January 12, 2005Date of Patent: May 22, 2007Assignee: Sumitomo Chemical Company, LimitedInventor: Kazuo Takaoki
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Patent number: 7199073Abstract: Catalyst compositions comprising a first metallocene compound, a second metallocene compound, a third metallocene compound, a chemically-treated solid oxide, and an organoaluminum compound are provided. Methods for preparing and using the catalyst and polyolefins are also provided. The compositions and methods disclosed herein provide ethylene polymers having decreased haze while minimizing impact on other properties, such as dart impact.Type: GrantFiled: November 10, 2004Date of Patent: April 3, 2007Assignee: Chevron Phillips Chemical Company, LPInventors: Joel L. Martin, Elizabeth A. Benham, Mark E. Kertok, Michael D. Jensen, Max P. McDaniel, Gil R. Hawley, Qing Yang, Matthew G. Thorn, Ashish M. Sukhadia
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Patent number: 7199072Abstract: A process for preparing a mixed catalyst compound used in the polymerization of polyolefins to produce bimodal polyethylenes is disclosed. In an embodiment, a process of preparing the mixed catalyst system includes: mixing a first catalyst and an activator in a first liquid medium to form a first mixture, combining a support with the first mixture to form a first support slurry, drying the first support slurry in an extent sufficient to provide a dried supported first catalyst, mixing the dried supported first catalyst in a second liquid medium to form a second support slurry, and combining one or more additional catalysts with the second support slurry to provide the mixed catalyst compound.Type: GrantFiled: September 16, 2003Date of Patent: April 3, 2007Assignee: Univation Technologies, LLCInventors: Donna Jean Crowther, John Francis Szul
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Patent number: 7196147Abstract: Ethylene and optional comonomers are polymerized in the presence of an organozinc compound and a catalyst system to produce an ethylene polymer. The catalyst system comprises a bridged indenoindolyl Group 3-10 transition metal complex and an activator. The organozinc compound is used in an amount effective to increase the polymer bulk density compared with that observed in the absence of the organozinc compound. The organozinc compound can also narrow the particle size distribution of the polymer and the wt. % of polyolefin chunks produced. The operability of processes utilizing bridged indenoindolyl metal complexes is enhanced while maintaining desirably high polyolefin molecular weights.Type: GrantFiled: July 1, 2005Date of Patent: March 27, 2007Assignee: Equistar Chemicals, LPInventors: Shaotian Wang, Kenneth J. Klug
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Patent number: 7148305Abstract: Olefin polymers having a comb-like structure with at least 0.3 long-chain branches per 1000 carbon atoms are disclosed. Some compositions have a melt strength of about 5 cN at 190° C., and when made into a film have a CD shrink of at least 20%. Some compositions described herein include a high molecular weight fraction and a low molecular weight fraction wherein the ratio of the molecular weight of the high molecular weight fraction to the molecular weight of the low molecular weight fraction is greater than about 1.3.Type: GrantFiled: March 21, 2005Date of Patent: December 12, 2006Assignee: Dow Global Technologies Inc.Inventors: James C. Stevens, Daniel D. VanderLende
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Patent number: 7144964Abstract: A high-temperature solution process for polymerizing ethylene is disclosed. The polymerization is performed in the presence of a preassembled bimetallic Ziegler-Natta catalyst and an aluminum compound. Molecular modeling calculations predict that the bimetallic Ziegler-Natta catalyst will have good activity and improved stability versus traditional Ziegler-Natta catalysts. This makes the catalyst especially suitable for solution polymerization processes, which require a thermally robust catalyst.Type: GrantFiled: August 19, 2004Date of Patent: December 5, 2006Assignee: Equistar Chemicals, L.P.Inventors: Sandor Nagy, Mark P. Mack
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Patent number: 7129302Abstract: Bimetallic catalyst for producing polyethylene resins with a bimodal molecular weight distribution, its preparation and use. The catalyst is obtainable by a process which includes contacting a support material with an organomagnesium component and carbonyl-containing component. The support material so treated is contacted with a non-metallocene transition metal component to obtain a catalyst intermediate, the latter being contacted with an aluminoxane component and a metallocene component, This catalyst may be further activated with, e.g., alkylaluminum cocatalyst, and contacted, under polymerization conditions, with ethylene and optionally one or more comonomers, to produce ethylene homo- or copolymers with a bimodal molecular weight distribution and improved resin swell properties in a single reactor. These ethylene polymers are particularly suitable for blow molding applications.Type: GrantFiled: July 13, 2005Date of Patent: October 31, 2006Assignee: Univation Technologies, LLCInventors: Robert Ivan Mink, Thomas Edward Nowlin, Pradeep P. Shirodkar, Gary M. Diamond, David Bruce Barry, Chunming Wang, Hitesh A. Fruitwala, Shih-May Christine Ong
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Patent number: 7087686Abstract: A process is disclosed for the preparation of zinc alkyl chain growth products via a catalysed chain growth reaction of an alpha-olefin on a zinc alkyl, wherein the chain growth catalyst system employs a group 3-10 transition metal, or a group 3 main group metal, or a lanthanide or actinide complex, and optionally a suitable activator. The products can be further converted into alpha-olefins by olefin displacement of the grown alkyls as alpha-olefins from the zinc alkyl chain growth product, or into primary alcohols, by oxidation of the resulting zinc alkyl chain growth product to form alkoxide compounds, followed by hydrolysis of the alkoxides.Type: GrantFiled: August 6, 2001Date of Patent: August 8, 2006Assignee: BP Chemicals LimitedInventors: George Johan Peter Britovsek, Steven Alan Cohen, Vernon Charles Gibson
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Patent number: 7084216Abstract: The present invention relates to a process for homopolymerization of ethylene or copolymerization of ethylene with alpha-olefins by contacting ethylene or ethylene and alpha-olefin with a catalyst composition comprising: (a) a solid catalyst precursor comprising at least one vanadium compound, at least one magnesium compound and a polymeric material or a solid catalyst precursor comprising at least one vanadium compound, at least one further transition metal compound and/or at least one alcohol, at least one magnesium compound and a polymeric material; and (b) a cocatalyst comprising an aluminum compound.Type: GrantFiled: January 30, 2002Date of Patent: August 1, 2006Assignee: Saudi Basic Industries CorporationInventors: Akhlaq A. Moman, Khalid Al-Bahily, Atieh Abu-Raqabah, John Ledford, Orass M. Hamed, Raju Raghavan, Sameh Rizkallah
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Patent number: 7041617Abstract: 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: January 9, 2004Date of Patent: May 9, 2006Assignee: Chevron Phillips Chemical Company, L.P.Inventors: 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: 7037990Abstract: A method is provided for the polymerization of olefins substituted with a functional group using a transition metal catalyst that, by virtue of one or more stabilizing groups incorporated within the catalyst structure, “fixes” the stereoconfiguration of each olefinic monomer relative to the transition metal complex during each successive reaction in the polymerization process. The invention substantially reduces the likelihood of olefin rearrangement at the active site of the catalyst during polymerization. In one particular embodiment, the functional group is a polar, electron-donating group and the stabilizing group is a Lewis acid substituent; examples of polymers that can be prepared with such a system include poly(vinyl acetate), poly(vinyl alcohol), and poly(vinyl ethers). Novel complexes and catalyst systems useful in the polymerization method are also provided.Type: GrantFiled: January 3, 2003Date of Patent: May 2, 2006Assignee: Nippon Synthetic Chemical CompanyInventors: Christopher D. Tagge, Robert B. Wilson, Jr., Hiroyuki Ono
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Patent number: 7022781Abstract: A catalyst system composition comprising a chromium compound supported on a silica-titania support, wherein said catalyst system has been reduced with carbon monoxide, and a cocatalyst selected from the group consisting of i) alkyl lithium compounds, ii) dialkyl aluminum alkoxides in combination with at least one metal alkyl selected from the group consisting of alkyl zinc compounds, alkyl aluminum compounds, alkyl boron compounds, and mixtures thereof and iii) mixtures thereof can be used to polymerize olefins to produce a low density polymer with a decreased melt index and/or high load melt index. This catalyst system also can be used with a Ziegler-Natta catalyst system to polymerize olefins. Polymerization processes using these catalyst system compositions are also provided.Type: GrantFiled: July 5, 2005Date of Patent: April 4, 2006Assignee: Phillips Petroleum CompanyInventors: Max P. McDaniel, Joseph S. Shveima, Elizabeth A. Benham, Rolf L. Geerts, James L. Smith
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Patent number: 7001962Abstract: A catalyst system comprises 1) a group 4 organometallic catalyst and 2) an activator comprising a solid zirconium acid component and a metal alkyl. The catalyst system is inexpensive and is highly active for the polymerization of olefins. Preferred organometallic catalysts contain a cyclopentadienyl ligand, a phosphinimine ligand and or a ketimide ligand.Type: GrantFiled: September 16, 2003Date of Patent: February 21, 2006Assignee: Nova Chemicals (International) S.A.Inventors: Xiaoliang Gao, Jessie Leighton, Matthew Gerald Kowalchuk, P. Scott Chisholm
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Patent number: 6995219Abstract: The invention relates to a process for the preparation of a multimodal A-olefin polymer comprising polymerizing in a polymerization stage at least one A-olefin in the presence of a multisite catalyst and an adjuvant so as to produce a polymer having a relatively lower molecular weight component and a relatively higher molecular weight component, said adjuvant being selected from the group consisting of phosphines, phosphites, acetylenes, dienes, thiophenes and aluminium alkyls and said adjuvant being capable of altering the ratio of the fraction of higher molecular weight component to the fraction of the lower molecular weight component by at least 10%.Type: GrantFiled: May 10, 2002Date of Patent: February 7, 2006Assignee: Borealis Technology OyInventors: Arild Follestad, Richard Blom, Ivar Martin Dahl, Erling Rytter
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Patent number: 6967184Abstract: A catalyst composition and method for olefin polymerization are provided. In one aspect, the catalyst composition is represented by the formula ?a?b?gMXn wherein M is a metal; X is a halogenated aryloxy group; ? and ? are groups that each comprise at least one Group 14 to Group 16 atom; ? is a linking moiety that forms a chemical bond to each of ? and ?; and a, b, g, and n are each integers from 1 to 4.Type: GrantFiled: February 17, 2004Date of Patent: November 22, 2005Assignee: Univation Technologies, LLCInventors: Timothy T. Wenzel, Zondra Dee Dixon
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Patent number: 6964937Abstract: Bimetallic catalyst for producing polyethylene resins with a bimodal molecular weight distribution, its preparation and use. The catalyst is obtainable by a process which includes contacting a support material with an organomagnesium component and carbonyl-containing component. The support material so treated is contacted with a non-metallocene transition metal component to obtain a catalyst intermediate, the latter being contacted with an aluminoxane component and a metallocene component. This catalyst may be further activated with, e.g., alkylaluminum cocatalyst, and contacted, under polymerization conditions, with ethylene and optionally one or more comonomers, to produce ethylene homo- or copolymers with a bimodal molecular weight distribution and improved resin swell properties in a single reactor. These ethylene polymers are particularly suitable for blow molding applications.Type: GrantFiled: April 10, 2001Date of Patent: November 15, 2005Assignee: Univation Technologies, LLCInventors: Robert Ivan Mink, Thomas Edward Nowlin, Pradeep P. Shirodkar, Gary M. Diamond, David Bruce Barry, Chunming Wang, Hitesh A. Fruitwala, Shih-May Christine Ong