Inorganic Oxygen Containing Aluminum Compound Patents (Class 526/156)
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Patent number: 10494464Abstract: A process for polymerizing propylene in the presence of a polymerization catalyst by copolymerizing propylene with a comonomer selected from the group of ethylene and C4-C10 alpha-olefins in two polymerization stages. The first polymerization stage is conducted in a loop reactor and the second polymerization stage in a gas phase reactor. The polymer produced in first polymerization stage has a higher melt flow rate and a lower content of comonomer units than the final polymer mixture. The process can be operated with a high throughput and catalyst productivity.Type: GrantFiled: April 22, 2014Date of Patent: December 3, 2019Assignees: BOREALIS AG, ABU DHABI POLYMERS CO. LTD. (BOROUGE) L.L.C.Inventors: Kauno Alastalo, Pauli Leskinen, Johanna Lilja, Cristian Hedesiu
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Patent number: 9348196Abstract: A seamless lens cover, and methods of forming such a seamless lens cover. The cap structure that covers a camera of a rotating panoramic camera system includes a seamless lens cover through which images are obtained by the camera. The cap structure may be injection molded at an initial lens cover thickness, and then a portion of the as molded initial lens cover thickness may be removed (e.g., by machining away) to achieve the final desired thickness. By such a method, the lens cover may be injection molded at thicknesses suitable for injection molding (e.g., about 0.06 to about 0.1 inch), after which most of the thickness may be machined away, to provide a seamless lens cover having a thickness of less than about 0.015 inch, exhibiting at least 60% transmittance to the thermal spectrum, no lensing characteristics, and no curvature effect.Type: GrantFiled: August 11, 2014Date of Patent: May 24, 2016Assignee: THERMAL IMAGING RADAR, LLCInventor: Michael D. Dortch
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Publication number: 20150045521Abstract: Methods for controlling properties of an olefin polymer using an alcohol compound are disclosed. The MI and the HLMI of the polymer can be decreased, and the Mw and the Mz of the polymer can be increased, via the addition of the alcohol compound.Type: ApplicationFiled: August 9, 2013Publication date: February 12, 2015Applicant: Chevron Phillips Chemical Company LPInventors: Qing Yang, Max P. McDaniel, Tony R. Crain, Albert P. Masino, Ted H. Cymbaluk, John D. Stewart
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Patent number: 8735519Abstract: The invention is directed to a metallocene catalyst system and a process for preparing the system. The metallocene catalyst system comprises a support and metallocene bound substantially throughout the support. The selection of certain supports facilitates the production of metallocene catalyst systems having increased catalytic activity than previously recognized.Type: GrantFiled: April 9, 2013Date of Patent: May 27, 2014Assignee: Fina Technology, Inc.Inventors: Jun Tian, William Gauthier, David Rauscher, Shady Henry
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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
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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
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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
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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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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: 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: 20100280199Abstract: This invention provides a compositions that are useful for polymerizing at least one monomer into at least one polymer.Type: ApplicationFiled: June 14, 2010Publication date: November 4, 2010Applicant: CHEVRON PHILLIPS CHEMICAL COMPANY LPInventors: MAX P. MCDANIEL, ELIZABETH A. BENHAM, SHIRLEY J. MARTIN, KATHY S. COLLINS, JAMES L. SMITH, GIL R. HAWLEY, CHRISTOPHER E. WITTNER, MICHAEL D. JENSEN
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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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Publication number: 20090198027Abstract: A polymerization process comprising contacting under polymerization conditions ethylene and at least propylene to obtain a copolymer containing from 96% by mol to 71% by mol of ethylene derived units, in the presence of a catalyst system obtainable by contacting: b) at least a metallocene compound of formula (I), b) alumoxane or a compound capable of forming an alkyl metallocene cation; and optionally c) an organo aluminum compound; wherein the groups R1-R4, L, M and W are described in the text.Type: ApplicationFiled: April 6, 2007Publication date: August 6, 2009Applicant: Basell Polylolefine GmbHInventors: Luigi Resconi, Francesca Focante
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Publication number: 20090156762Abstract: A method comprising contacting a support with one or more chromium-containing compounds and one or more boria precursors to provide a catalyst precursor, and activating the catalyst precursor to provide a polymerization catalyst.Type: ApplicationFiled: December 18, 2007Publication date: June 18, 2009Applicant: CHEVRON PHILLIPS CHEMICAL COMPANY LPInventors: Max P. McDaniel, Kathy S. Collins
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Patent number: 7547751Abstract: The invention related to a process for the polymerization of at least one aliphatic C2-20 or aromatic C4-20 hydrocarbyl mono- or multiolefin in the presence of a catalyst and an aluminum comprising co-catalyst, wherein the catalyst comprises a composition of a metal-organic reagent, a spectator ligand and optionally at least one equivalent of a hydrocarbylating agent. The invention further relates to a polymer obtainable by the process of the invention.Type: GrantFiled: August 3, 2004Date of Patent: June 16, 2009Assignee: DSM IP Assets B.V.Inventors: Edwin IJpeij, Henricus Arts, Gerardus van Doremaele, Felix Beijer, Francis van der Burgt, Martin Zuideveld
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Patent number: 7534842Abstract: 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 catalyst composition. One aspect of this invention is the formation and use of a catalyst composition comprising a transition metal compound and an activator for olefin polymerization processes.Type: GrantFiled: November 16, 2005Date of Patent: May 19, 2009Assignee: Chevron Phillips Chemical Company, LPInventors: Kumudini C. Jayaratne, Michael D. Jensen, Matthew G. Thorn, Max P. McDaniel, Qing Yang
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Publication number: 20090005523Abstract: A process for obtaining atactic 1-butene polymer optionally containing at least one comonomer selected from ethylene, propylene or an alpha-olefin of formula CH2?CHRo, wherein Ro is a linear or branched C3-C20 alkyl group, comprising the step of polymerizing 1-butene and optionally ethylene, propylene or said alpha-olefin, in the presence of a catalyst system obtainable by contacting: a) at least one metallocene compound of formula (I) in its 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; L is a divalent C1-C40 hydrocarbon radical optionally containing heteroatoms belonging to groups 13-17 of the Periodic Table of the Elements; R1 and R2, are C1-C40 hydrocarbon radicals; T, equal to or different from each other, is a moiety of formula (IIa) or (IIb): wherein R3 is a C1-C40 hydrocarbon radical; R4 and R6, are hydrogen atoms or C1-C40 hydrocarbon radicals; R5 is a C1Type: ApplicationFiled: April 25, 2005Publication date: January 1, 2009Applicant: Basell Polyefine GmbHInventors: Luigi Resconi, Simona Guidotti
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Patent number: 7009012Abstract: The present invention provides a supported catalyst comprising (A) a polymer (B) a supporter, (C) a transition metal compound, and optionally (D) (a) a compound which can form an ionic complex by the reaction with the transition metal compound or (b) a specific oxygen-containing compound, and (E) an alkylaluminum compound. The supported catalyst according to present invention, which has a high activity, can be used for preparing a styrenic polymer with a high syndiotacticity. The supported catalyst can be used in combination with a cocatalyst, preferably an alkyl aluminoxane.Type: GrantFiled: December 18, 2000Date of Patent: March 7, 2006Assignee: Samsung Atofina Co. Ltd.Inventors: Sung Cheol Yoon, Xuequan Zhang, Jae Gon Lim, Hyun Joon Kim, Young Sub Lee
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Patent number: 7001968Abstract: A novel loop/slurry olefin polymerization process is provided which produces ultra-high molecular weight ethylene homopolymer.Type: GrantFiled: June 16, 2003Date of Patent: February 21, 2006Assignee: Phillips Petroleum CompanyInventors: Max P. McDaniel, Elizabeth A. Benham
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Patent number: 6900277Abstract: Novel catalyst systems which comprise one or more diimine nickel(II) or palladium (II) complexes, one or more cocatalysts, and aluminophosphate are disclosed. Olefin polymerization processes using those catalyst systems are also disclosed. The inclusion of aluminophosphate can improve the activity or productivity of such catalyst systems, making such catalyst systems active or more active in olefin polymerization under conditions in which they had previously been inactive or insufficiently active.Type: GrantFiled: May 23, 2003Date of Patent: May 31, 2005Assignee: Phillips Petroleum Company Washington CountyInventors: Nancy W. Eilerts, Max P. McDaniel, Lloyd W. Guatney, Kathy S. Collins
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Patent number: 6878779Abstract: A highly uniform vinyl compound polymer-cross-copolymerized olefin/styrene/diene copolymer excellent in processability, mechanical properties, high temperature properties, compatibility and transparency, and its composition and a process for its production, are provided. This copolymer is a crossed polymer obtained by cross-copolymerizing an olefin/styrene/diene copolymer having a styrene content of from 0.03 mol % to 96 mol %, a diene content of from 0.0001 mol % to 3 mol % and the rest being an olefin, with an olefin/aromatic vinyl compound copolymer.Type: GrantFiled: January 20, 2004Date of Patent: April 12, 2005Assignee: Denki Kagaku Kogyo Kabushiki KaishaInventors: Toru Arai, Toshiaki Otsu, Masataka Nakajima
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Patent number: 6878785Abstract: This invention provides catalyst compositions that are useful for polymerizing at least one monomer to produce a polymer. This invention also provides catalyst compositions that are useful for polymerizing at least one monomer to produce a polymer, wherein said catalyst composition comprises a post-contacted organometal compound, a post-contacted organoaluminum compound, and a post-contacted treated solid oxide compound.Type: GrantFiled: March 17, 2003Date of Patent: April 12, 2005Assignee: Phillips Petroleum CompanyInventors: Max P. McDaniel, Kathy S. Collins, Gil R. Hawley, Michael D. Jensen, Elizabeth A. Benham, Anthony P. Eaton, Joel L. Martin, Christopher E. Wittner
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Patent number: 6809163Abstract: The present invention provides a process for preparing bead polymers having an average particle size of 1 to 40 &mgr;m, which includes: contacting: at least one polymerizable mix which includes at least 50% by weight of at least one (meth)acrylate monomer, at least one aluminum compound, and an aqueous phase, to prepare a mixture; dispersing the mixture at a shear rate≧103 s−1 to form a dispersion, wherein the dispersion is stabilized by the aluminum compound; and polymerizing to produce bead polymers having an average particle size of 1 to 40 &mgr;m.Type: GrantFiled: December 28, 2001Date of Patent: October 26, 2004Assignee: Roehm GmbH & Co KGInventors: Klaus Schultes, Thomas Suefke, Markus Parusel, Guenter Schmitt, Winfried Belzner
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Patent number: 6646072Abstract: A clay-filled polyolefin composition and process for making it are disclosed. The process involves treatment of a non-acid-treated smectite clay with a Ziegler-Natta catalyst in the presence of a hydrocarbon and subsequent polymerization of an olefin in the presence of the treated clay and an organoaluminum cocatalyst. Results indicate that filled compositions produced by this process contain exfoliated clay.Type: GrantFiled: January 23, 2002Date of Patent: November 11, 2003Assignee: Equistar Chemicals, LPInventors: Douglas D. Klendworth, Mark K. Reinking
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Patent number: 6617277Abstract: A catalyst composition has a catalyst component which includes a metallocene transition metal compound, a magnesium compound, a hydroxyl containing compound, and a polymeric material. The catalyst component may also include asilicon compound and an aluminum compound. The catalyst component is combined with a cocatalyst and used in olefin polymerization.Type: GrantFiled: September 10, 2001Date of Patent: September 9, 2003Assignee: Saudi Basic Industries CorporationInventors: Orass Hamed, Akhlaq Moman, Atieh Abu-Raqabah
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Publication number: 20030162915Abstract: A process to produce ethylene polymers is provided.Type: ApplicationFiled: December 13, 2002Publication date: August 28, 2003Inventors: Max P. McDaniel, Elizabeth A. Benham, Al R. Wolfe
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Patent number: 6608152Abstract: A novel process for the polymerization of olefins is provided. The process involves contacting at least one olefin with a Ziegler-Natta type catalyst in the presence of a specified compound that results in the production of polymeric products having a narrower molecular weight distribution. Also provide is a process for narrowing the molecular weight distribution of a polyolefin comprising contacting an olefin, a Ziegler-Natta catalyst and a compound specified herein. Further provided are novel polyethylenes, and films and articles produced therefrom.Type: GrantFiled: July 27, 2001Date of Patent: August 19, 2003Assignee: Eastman Chemical CompanyInventors: Randal Ray Ford, Richard Kingsley Stuart, Jr.
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Publication number: 20030139545Abstract: A clay-filled polyolefin composition and process for making it are disclosed. The process involves treatment of a non-acid-treated smectite clay with a Ziegler-Natta catalyst in the presence of a hydrocarbon and subsequent polymerization of an olefin in the presence of the treated clay and an organoaluminum cocatalyst. Results indicate that filled compositions produced by this process contain exfoliated clay.Type: ApplicationFiled: January 23, 2002Publication date: July 24, 2003Inventors: Douglas D. Klendworth, Mark K. Reinking
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Patent number: 6583235Abstract: Novel catalyst systems which comprise one or more diimine nickel (II) or palladium (II) complexes, one or more cocatalysts, and aluminophosphate are disclosed. Olefin polymerization processes using those catalyst systems are also disclosed. The inclusion of aluminophosphate can improve the activity or productivity of such catalyst systems, making such catalyst systems active or more active in olefin polymerization under conditions in which they had previously been inactive or insufficiently active.Type: GrantFiled: December 29, 1999Date of Patent: June 24, 2003Assignee: Phillips Petroleum CompanyInventors: Nancy W. Eilerts, Max P. McDaniel, Lloyd W. Guatney, Kathy S. Collins
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Patent number: 6573344Abstract: A process to produce a propylene polymer is provided. The process comprising contacting at least one organometal compound, at least one organoaluminum compound, at least one treated solid oxide compound, propylene, and ethylene in a polymerization zone under polymerization conditions to produce the propylene polymer.Type: GrantFiled: June 22, 2000Date of Patent: June 3, 2003Assignee: Phillips Petroleum CompanyInventors: Gil R. Hawley, Max P. McDaniel, Michael D. Jensen, Christopher E. Wittner
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Patent number: 6559087Abstract: A method for the treatment of catalyst or catalyst support material in an apparatus in which the treatment is carried out continuously in such a way that the physical and/or chemical conditions change during entry of the catalyst or catalyst support material into the apparatus and/or during exit thereof from the apparatus and/or the catalyst or catalyst support material is transported in the apparatus through zones (5, 6, 7) having different physical and/or chemical conditions.Type: GrantFiled: March 27, 2000Date of Patent: May 6, 2003Assignee: Basell Polyolefins GmbHInventors: Paulus De Lange, Rainer Karer, Philipp Rosendorfer, Kaspar Evertz, Wolfgang Micklitz, Hans-Jacob Feindt
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Patent number: 6548442Abstract: This invention is directed to an organometal compound catalyst that is useful for polymerizing at least one monomer to produce a polymer. The catalyst is produced by combining a titanium, zirconium or hafnium organometal compound, preferably a metallocene, at least one organoaluminum compound, and a treated solid oxide. The treated solid oxide compound contains at least one halogen, zirconium and a solid oxide compound.Type: GrantFiled: December 3, 1999Date of Patent: April 15, 2003Assignee: Phillips Petroleum CompanyInventors: Max P. McDaniel, Kathy S. Collins, Gil R. Hawley, Michael D. Jensen, Elizabeth A. Benham, Anthony P. Eaton, Joel L. Martin, Christopher E. Wittner
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Patent number: 6495638Abstract: A process is provided to produce a catalyst system. The process comprises blending a first component and a second component. The first component of the catalyst system comprises chromium on a support. The amount of chromium on the support is from about 0.05 to about 5 weight percent based on the weight of the support. The support comprises fluorided alumina. The support has a surface area from about 200 to about 550 square meters per gram and a pore volume from about 0.7 to about 2.5 cubic centimeters per gram. The first component is activated at a temperature in the range of about 500° C. to about 900° C. The second component is a transition metal halide catalyst. A process comprising polymerizing ethylene or copolymerizing ethylene and at least one other monomer using the catalyst system to produce ethylene polymers is also provided.Type: GrantFiled: December 30, 1998Date of Patent: December 17, 2002Assignee: Phillips Petroleum CompanyInventors: Max P. McDaniel, Elizabeth A. Benham, Al R. Wolfe
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Patent number: 6476165Abstract: An olefin polymerization process is described. The process comprises polymerizing an olefin in the presence of a support, a single-site catalyst, an optional activator, and a fatty amine. The support is chemically treated with an organoboron compound. The single-site catalyst contains a polymerization-stable, heteroatomic ligand. The fatty amine is added directly to the reactor. The combination of pre-treating the support with an organoboron compound and the addition of fatty amine to the process unexpectedly increases catalyst activity.Type: GrantFiled: March 8, 2000Date of Patent: November 5, 2002Assignee: Equistar Chemicals, LPInventor: Shaotian Wang
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Patent number: 6465543Abstract: The present invention is a nanocomposite which is a dispersion of nanofiller particles derived from layered metal oxides or metal oxide salts. The nanocomposite is advantageously prepared by first swelling an untreated clay in water, then removing the water to form an organophilic clay that is dispersible in non-polar organic solvents. The organophilic clay can then be treated with an alkyl aluminoxane and subsequently a catalyst to form a complex that promotes olefin or styrenic polymerization and platelet dispersion. The nanocomposite can be prepared directly by in situ polymerization of the olefin or the styrene at the nanofiller particles without shear, without an ion exchange step, and without the need to incorporate polar substituents into the polyolefin or polystyrene.Type: GrantFiled: December 21, 2000Date of Patent: October 15, 2002Assignee: The Dow Chemical CompanyInventors: Michael Alexandre, Philippe G. Dubois, Robert J. E. G. Jerome, Miguel Garcia-Marti, Tao Sun, Juan M. Garces, Dean M. Millar, Alexander Kuperman
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Patent number: 6433083Abstract: The present invention provides resin materials for producing molded products endowed with excellent heat resistance, solvent resistance, toughness, tensile elongation, and transparency. Specifically, there are provided aromatic vinyl resin materials which have the following properties: Storage elasticity values G′(1.0) and G′(0.1) as measured at 300° C., a strain &ggr; of 20%, and a frequency of 1.0 Hz or 0.1 Hz satisfy the expression, log[G′(1.0)/G′(0.1)]≦0.6, the heat of fusion &Dgr;H as measured over the range 200-295° C. is 8 to 50 (J/g), and the 1H-NMR peak integrated values for the fraction corresponding to the temperature range of not lower than 50° C., as collected from temperature rising election fraction on the Soxhlet extraction residue by use of cyclohexane or o-dichlorobenzene, satisfy the relation [1.8-2.1 (ppm)]/[1.0-1.7(ppm))<0.49.Type: GrantFiled: February 2, 2001Date of Patent: August 13, 2002Assignee: Idemitsu Petrochemical Co., Ltd.Inventors: Hideo Teshima, Tomoaki Takebe, Masanori Sera
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Publication number: 20020099154Abstract: A catalyst composition has a catalyst component which includes a metallocene transition metal compound, a magnesium compound, a hydroxyl containing compound, and a polymeric material. The catalyst component may also include asilicon compound and an aluminum compound. The catalyst component is combined with a cocatalyst and used in olefin polymerization.Type: ApplicationFiled: September 10, 2001Publication date: July 25, 2002Applicant: Saudi Basic Industries Corporation.Inventors: Orass Hamed, Akhlaq Moman, Atieh Abu-Raqabah
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Patent number: 6395668Abstract: It is disclosed a new catalyst system for the polymerization of olefins comprising the product obtainable by contacting the following components: (A) one or more compounds of a late transition metal belonging to Group 8-11 of the Periodic Table; and (B) the reaction product of water with one or more organometallic aluminum compounds of formula (IV): Al(CH2—CR3R4R5)xR6yHz, wherein R3 is a C1-C20 alkyl, C3-C20 cycloalkyl or C7-C20 alkylaryl radical; R4 is different from a straight alkyl and is a C3-C20 alkyl, C3-C20 cycloalkyl, C6-C20 aryl, C7-C20 alkylaryl or C7-C20 arylalkyl radical; or R3 and R4 form together a C4-C6 ring; R5 is hydrogen or a C1-C20 alkyl, C6-C20 aryl, C7-C20 alkylaryl or arylalkyl radical; R6 is a C1-C20 alkyl, C3-C20 cycloalkyl, C6-C20 aryl, C7-C20 alkylaryl or C7-C20 arylalkyl radical; x is 1-3; z is 0-1; and y is 3−x−z; the molar ratio between said organometallic aluminum compound and water being comprised between 0.5:1 and 100:1.Type: GrantFiled: June 13, 2001Date of Patent: May 28, 2002Assignee: Basell Technology Company BVInventors: Jan F. van Baar, Peter A. Schut, Andrew D. Horton, Tiziano Dall'Occo
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Patent number: 6384163Abstract: A process for preparing a spherical polyethylene of ultra-high molecular weight. A process for preparing a spherical support for the polymerization of alpha-olefins from an ammonium dawsonite which is spray-dried and formed into spherical particles which are then calcined and impregnated with titanium to produce a spherical catalyst of good mechanical strength is described. Also described is the polymerization process which, in the presence of the spherical catalyst, yields polyolefin particles which preserve the spherical characteristics of the support, with low flow angle and good bulk density, as well as the product polyethylene obtained from the process.Type: GrantFiled: June 6, 1995Date of Patent: May 7, 2002Assignee: Petroleo Brasileiro S. A.-PetrobrasInventors: Jaime Correia da Silva, Cecilia Maria Ooelho de Figueiredo
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Patent number: 6369173Abstract: The present invention relates to a process of preparing syndiotactic styrenic polymers with a high conversion rate in the form of fine powder, which comprises (a) preparing styrenic polymers in a solid state by reacting a mixture consisting of styrenic monomers, a metallocene catalyst, a cocatalyst and inert organic solvent in a polymerization reactor, (b) separating a portion of the styrenic polymers from the reactor, (c) recycling the portion of the styrenic polymers in the reactor, and (d) reacting the recycled styrenic polymers with styrenic monomers. The styrenic monomers may include olefinic monomers. The monomers can be introduced to a single inlet or multiple inlets of the reactor. A single reactor or a plural number of reactors can be operated in the present invention. The plural numbers of reactors are arranged in series or in parallel. In the present invention, a self-cleaning mono- or twin-axis reactor can be employed to prevent the polymers from agglomerating on the inner wall or the axis.Type: GrantFiled: September 15, 2000Date of Patent: April 9, 2002Assignee: Samsung General Chemicals Co., Ltd.Inventors: Hyun-Joon Kim, Jae-Gon Lim, Sung-Cheol Yoon
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Patent number: 6359086Abstract: A free-flowing solid which does not self-ignite, comprising: a) at least one support component, b) at least one chemical compound which per se is self-igniting, c) at least one inert liquid and d) further components.Type: GrantFiled: July 13, 1999Date of Patent: March 19, 2002Assignee: Basell Polyolefine GmbHInventors: Marc Oliver Kristen, Patrik Müller, Ulrich Moll, Peter Kölle
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Patent number: 6288182Abstract: A catalyst composition has a catalyst component which includes a metallocene transition metal compound, a magnesium compound, a hydroxyl containing compound, and a polymeric material. The catalyst component may also include asilicon compound and an aluminum compound. The catalyst component is combined with a cocatalyst and used in olefin polymerization.Type: GrantFiled: October 12, 1999Date of Patent: September 11, 2001Assignee: Saudi Basic Industries CorporationInventors: Orass Hamed, Akhlaq Moman, Atieh Abu-Raqabah
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Publication number: 20010001795Abstract: A process to produce ethylene polymers is provided.Type: ApplicationFiled: December 30, 1998Publication date: May 24, 2001Inventors: MAX P. MCDANIEL, ELIZABETH A. BENHAM, AL R. WOLFE
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Patent number: 6228792Abstract: Supported Ziegler-Natta catalyst component adapted for the polymerization of ethylene is provided. More specifically, certain organomagnesium compounds (e.g., dibutylmagnesium) which do not contain an oxygen linkage between the organo moiety and the magnesium are impregnated into a porous inorganic oxide support (e.g., agglomerated silica particles) to form a first reaction product. The first reaction product is halogenated, e.g., with HCl, to convert the organomagnesium derived component to MgCl2 thereby forming a second reaction product. The second reaction product is then treated with a transition metal compound (e.g., TiCl4), a particular type of electron donor (e.g., 2,6-dimethyl pyridine) and optionally at least one Group 2 or 13 organo metal compound (e.g., diethylaluminum chloride). The combination of the particular organomagnesium compounds and electron donor impart a low melt flow ratio and enhanced activity to resulting catalyst component.Type: GrantFiled: February 27, 1998Date of Patent: May 8, 2001Assignee: W. R. Grace & Co.-Conn.Inventor: Michael John Carney
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Patent number: 6225427Abstract: A polyolefin elastomer possessing a unique combination of properties, i.e., high molecular weight (Mw), high Mooney viscosity (ML1+4 at 125° C.), low polydispersity index (Mw/Mn) and low glass transition temperature (Tg), is obtained by a polymerization process employing a particular type of a metallocene catalyst. The polyolefin elastomer is useful for manufacturing a variety of products including rubber articles such as hoses, belts and moldings, polymer blends containing one or more other hydrocarbon polymers and lubricating oils in which the elastomer functions as a viscosity modifier. Also disclosed is a cocatalyst for activating the metallocene procatalyst employing a specific molar ratio of the components of the cocatalyst to the transition metal of the procatalyst.Type: GrantFiled: October 15, 1998Date of Patent: May 1, 2001Assignee: Uniroyal Chemical Company, Inc.Inventors: Willie C. Burton, Xu Wu Feng, Daniel Gillis
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Patent number: 6201076Abstract: An olefin polymerization process is described. The process comprises polymerizing an olefin in the presence of a supported single-site catalyst, an optional activator, and a fatty amine. The fatty amine is added at a concentration in the range from about 10 to about 75 weight percent based on the weight of the supported catalyst. The fatty amine helps to reduce fouling and sheeting during the polymerization process and enhances catalyst activity.Type: GrantFiled: April 29, 1999Date of Patent: March 13, 2001Assignee: Equistar Chemicals, L.P.Inventors: Bradley P. Etherton, Gregory G. Hlatky, James H. Meas, Jr.
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Patent number: 6121394Abstract: The present invention is directed to a method for polymerizing an .alpha.-olefin characterized by using a catalyst system which is obtained by reacting a halogenated metallocene compound with an organometallic compound, and then bringing the resultant reaction product into contact with a compound which will be a stable anion by reaction with the reaction product of the halogenated metallocene compound and the organometallic compound.When the method of the present invention is carried out, a polyolefin can be obtained by the use of the inexpensive catalyst in a high activity per unit amount of the catalyst.Type: GrantFiled: May 25, 1995Date of Patent: September 19, 2000Assignee: Mitsui Chemicals, Inc.Inventors: Ryuichi Sugimoto, Tadashi Asanuma, Tutomu Iwatani, Katsumi Takeuchi, Osamu Uchida
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Patent number: 6121182Abstract: A catalyst component for polyolefin production catalysts comprising a metallocene compound represented by general formula (1) (symbols have the meanings as described in the specification), polyolefin production catalyst containing the component, and method for producing polyolefin with the catalyst are provided. Use of a catalyst containing the novel metallocene compound as a catalyst component of the invention in polymerization of .alpha.-olefin, particularly propylene, enables one to prepare high rigid, high melting point isotactic polypropylene useful as an industrial material for automobiles and the like, more specifically isotactic polypropylene having highly controlled stereoregulartity and regioregularity, particularly the one having a high regioregularity that has been difficult to achieve with conventional metallocene catalysts.Type: GrantFiled: December 11, 1997Date of Patent: September 19, 2000Assignee: Japan Polyolafins Co., Ltd.Inventors: Yoshikuni Okumura, Tsutomu Sakuragi, Michio Ono, Shintaro Inazawa
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Patent number: 6031055Abstract: A method of controlling the molecular weight distribution of a polyalpha-olefin during polymerization, comprising changing the aluminoxane to chromium ratio of a polymerization catalyst comprising chromium and at least one aluminoxane to thereby adjust the molecular weight distribution.Type: GrantFiled: January 25, 1993Date of Patent: February 29, 2000Assignee: Chevron Chemical CompanyInventors: Pamela R. Auburn, David L. Beach
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Patent number: 5936051Abstract: Metallocene complexes of a metal M selected from titanium, zirconium and hafnium, comprising at least one anionic group A containing an .eta..sup.5 -cyclopentadienyl ring co-ordinated with the metal M, wherein the anionic group is substituted in at least one position of the cyclopentadienyl ring with a radical having the formula:Ph*--(CR.sup.6 R.sup.7).sub.nwherein: R.sup.6 and R.sup.7 are independently hydrogen, halogen or a C.sub.1 -C.sub.4 alkyl group, preferably hydrogen, "n" is 0 or 1, preferably 1, Ph* is a C.sub.6 -C.sub.14 group comprising an aromatic ring linked to --CR.sup.6 R.sup.7 -- or to A and substituted with at least one and up to a maximum of three electron-attractor groups, on the condition that, when A is an .eta..sup.5 -indenyl group and "n" is 0, at least one Ph group is linked to A in position 1 or 3 of indenyl.These complexes can be used in (co)polymerization processes of .alpha.Type: GrantFiled: February 19, 1997Date of Patent: August 10, 1999Assignee: Enichem S.p.A.Inventors: Roberto Santi, Giampiero Borsotti, Cecilia Querci, Liliana Gila, Antonio Proto