Monomer Polymerized In Presence Of Transition Metal Containing Catalyst At Least Part Of Which Is Supported On A Polymer; E.g., Prepolymerized Catalysts, Etc. Patents (Class 526/904)
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Publication number: 20030225225Abstract: A coordination catalyst system comprising at least one metallocene or constrained geometry pre-catalyst transition metal compound, (e.g., rac-ethylene bis(indenyl)zirconium dichloride), at least one non-metallocene, non-constrained geometry, bidentate transition metal compound or tridentate transition metal compound (e.g., tridentate 2,6-diacetylpyridine-bis(2,4,6-trimethylanaline)FeCl2) at least one support-activator (e.g., spray dried silica/clay agglomerate), and optionally at least one organometallic compound (e.g., triisobutyl aluminum), in controlled amounts, and methods for preparing the same. The resulting dual transition metal catalyst system is suitable for addition polymerization of ethylenically and acetylenically unsaturated monomers into polymers; for example, polymers having a broad molecular weight distribution, Mw/Mn, and good polymer morphology.Type: ApplicationFiled: April 10, 2002Publication date: December 4, 2003Inventor: Keng-Yu Shih
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Patent number: 6656524Abstract: A continuous process for gas phase coating of polymerization catalyst. The polymerization catalyst is introduced in a gas phase plug flow type reactor wherein it is submitted to polymerization conditions in the presence of at least one monomer such that at least 95% by weight of the produced coated catalysts have a coating yield comprised between 0.5 to 2 times the average coating yield.Type: GrantFiled: February 1, 2001Date of Patent: December 2, 2003Assignee: BP Chemicals LimitedInventors: Daniel Claude Durand, Estelle Marie Joelle Meurice, Frederic Robert Marie Michel Morterol
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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: 20030153695Abstract: A process for polymerizing monomers in the gas phase, in fluidized bed reactors is described, where unsaturated, gas phase monomers are fed into the reactors in the presence of a mixture of inert diluents having a composition that allows the dew point to be adjusted, this leading to high production rates under stable operation in a non condensed operation mode.Type: ApplicationFiled: September 10, 2002Publication date: August 14, 2003Inventors: Antonio Luiz Duarte Braganca, Antonio Luiz Ribeirio de Castro Morschbacker, Enio Rubbo, Cid Neto Miro, Tamara Barlem, Arj Mukherjee
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Patent number: 6583242Abstract: A supported olefin polymerization catalyst system and a method of making it are disclosed. The catalyst system comprises: (a) a support having mean particle size less than about 30 microns chemically treated with alumoxane; (b) an organometallic complex comprising a Group 3 to 10 transition or lanthanide metal, M, and at least one indenoindolyl ligand that is &pgr;-bonded to M; and (c) an activator. Chemical treatment with alumoxane and support mean particle size less than 30 microns are key to making supported indenoindolyl containing catalysts having high activity.Type: GrantFiled: August 2, 2001Date of Patent: June 24, 2003Assignee: Equistar Chemicals, LPInventors: Shaotian Wang, Norma J. Maraschin, Debra L. Beran, William J. Sartain
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Patent number: 6583253Abstract: Propene terpolymers consist of from 80 to 99.5 mol % of structural units derived from propene, from 0.1 to 15 mol % of structural units derived from ethene or a C4-C6-1-olefin (I) and from 0.Type: GrantFiled: December 5, 2000Date of Patent: June 24, 2003Assignee: Basell Polypropylen GmbHInventors: David Fischer, Peter John Vaughan Jones, Franz Langhauser, Wolfgang Bidell, Roland Hingmann, Günther Schweier, Bernd Lothar Marczinke, Meinolf Kersting, Ulrich Moll
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Patent number: 6576723Abstract: A catalyst system which can be used in the polymerization of propylene comprises at least one metallocene as a rac/meso isomer mixture, at least one organoboroaluminum compound, at least one passivated support, at least one Lewis base and, if desired, at least one further organometallic compound.Type: GrantFiled: November 15, 2000Date of Patent: June 10, 2003Assignee: Basell Polyolefine GmbHInventors: Hans Bohnen, Markus Göres, Cornelia Fritze
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Publication number: 20030105252Abstract: A solid particulate metallocene-containing catalyst system is produced by combining an alkenyl substituted indenyl (t-butylamido)dimethyl silane titanium dichloride half sandwich metallocene in which the alkenyl substituent on the indenyl has terminal olefinic unsaturation and 5 to 6 carbon atoms with a suitable cocatalyst in a liquid and conducting prepolymerization of at least one olefin, optionally in multiple steps, to produce a prepolymerized solid catalyst, and separating the resulting solid from the liquid and the components dissolved in the liquid, said solid being the inventive solid particulate metallocene catalyst system. The use of the solid particulate catalyst in the polymerization of olefins is also disclosed.Type: ApplicationFiled: October 31, 2001Publication date: June 5, 2003Inventors: Alexander Reb, Helmut G. Alt, M. Bruce Welch
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Publication number: 20030104929Abstract: A nitrogen containing transition metal complex having Formula (I), 1Type: ApplicationFiled: March 27, 2002Publication date: June 5, 2003Inventors: Stuart Jame McTavish, Marc John Payne
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Publication number: 20030069127Abstract: A modified particle obtained by contacting the following (a), the following (b), the following (c) and a particle (d) with one another,Type: ApplicationFiled: August 26, 2002Publication date: April 10, 2003Inventors: Kazuo Takaoki, Takuya Ogane, Hideki Oshima, Yasuki Fujiwara, Kenichiro Yada, Masatada Tasaka
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Publication number: 20030050413Abstract: A supported olefin polymerization catalyst system and a method of making it are disclosed. The catalyst system comprises: (a) a support having mean particle size less than about 30 microns chemically treated with alumoxane; (b) an organometallic complex comprising a Group 3 to 10 transition or lanthanide metal, M, and at least one indenoindolyl ligand that is &pgr;-bonded to M; and (c) an activator. Chemical treatment with alumoxane and support mean particle size less than 30 microns are key to making supported indenoindolyl containing catalysts having high activity.Type: ApplicationFiled: August 2, 2001Publication date: March 13, 2003Inventors: Shaotian Wang, Norma J. Maraschin, Debra L. Beran, William J. Sartain
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Patent number: 6531553Abstract: This invention relates to a conventional supported heterogeneous Ziegler-Natta catalyst for the polymerization of olefins. It has been found that adding a lithium compound to a transition metal catalyst component and then adding an organoaluminum co-catalyst and an organosilicon electron donor produces a catalyst which yields polymer with increased molecular weight. The lithium compound is of the general formula LiCp wherein Cp is a cyclopentadienyl or substituted cyclopentadienyl and is preferably lithium cyclopentadienide or lithium indene. Preferably, the molar ratio of lithium compound/transition metal is at least 0.2.Type: GrantFiled: June 7, 1995Date of Patent: March 11, 2003Assignee: Fina Technology, Inc.Inventors: Edwar Shoukri Shamshoum, Christopher Bauch
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Patent number: 6524986Abstract: Catalyst support containing an &agr;-olefin polymer which is in the form of particles of mean size from 5 to 350 &mgr;m in which the pore volume generated by the pores of radius from 1,000 to 75,000 Å is at least 0.2 cm3/g. Catalyst usable for the polymerization of &agr;-olefins, including a compound containing at least one transition metal belonging to groups IIIb, IVb, IVb and VIb of the Periodic Table, bound in or on this support.Type: GrantFiled: March 8, 2001Date of Patent: February 25, 2003Assignee: Solvay Polyolefins Europe-BelgiumInventors: Jean-Louis Costa, Vincent Laurent, Philippe Francois, Dirk Vercammen
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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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Publication number: 20020161144Abstract: An ethylene polymerization process is disclosed. The process uses a single-site catalyst that contains a boraaryl ligand. It comprises supporting the catalyst, forming a slurry of the supported catalyst in an organic solvent, mixing the catalyst slurry with trialkyl aluminum compound, and polymerizing ethylene in the presence of the trialkyl aluminum-treated catalyst slurry. The process gives polyethylene having a controlled long-chain-branch index.Type: ApplicationFiled: March 29, 2001Publication date: October 31, 2002Inventors: Shaotian Wang, Jean A. Merrick-Mack
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Publication number: 20020147284Abstract: A copolymer of ethylene and an alpha-olefin contains from 3 to 12 carbon atoms, wherein 0.1 to 1.5 mol % of the units originate from the alpha-olefin. The copolymer has a relative density ranging from 0.960 to 0.940, a transition metal content lower than 6 ppm, an Mw/Mn ratio higher than 7, an Mz/Mw ratio higher than 3.3 and an Mz higher than 300,000. The copolymer is prepared from the polymerization or co-polymerization of at least one olefin in the presence of a solid catalytic component or a prepolymerized catalyst.Type: ApplicationFiled: February 6, 2002Publication date: October 10, 2002Inventors: Jean Malinge, Claude Brun, Jean-Loup Lacombe
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Patent number: 6451726Abstract: Components of catalysts for the polymerization of olefins are obtained by contacting a Ti compound of formula Ti(OR)n−yXy, where n is the valence of titanium and y is a number between 1 and n, with a pre-polymer having a porosity higher than 0.3 cc/g and containing from 0.5 to 100 g of polymer per g of solid catalyst component, the pre-polymer being obtained by (co)polymerizing an olefin or a diolefin in the presence of a catalyst comprising a Ti, V, Zr of Hf compound supported on an Mg dihalide having a mean crystallite dimension lower than 30 nm.Type: GrantFiled: March 30, 2000Date of Patent: September 17, 2002Assignee: Basell Poliolefine Italia S.p.A.Inventors: Licio Zambon, Mario Sacchetti, Gianni Vitale
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Patent number: 6448348Abstract: A catalytic polymerization process for preparing polymer products is provided. The polymerization process is either homopolymerization of olefins or copolymerization of olefins with alpha-olefins. The polymerization process is conducted in the presence of a solid catalyst precursor and a cocatalyst. The catalyst precursor includes a transition metal, a magnesium compound, an aluminum compound and a polyvinylchloride (PVC) support.Type: GrantFiled: June 9, 2000Date of Patent: September 10, 2002Assignee: Saudi Basic Industries CorporationInventors: Akhlaq Moman, Atieh Abu-Raqabah, Orass Hamed, Raju Raghavan
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Patent number: 6444604Abstract: Supported catalysts for the polymerization of olefins comprise the following components: (A) a porous organic support functionalised with groups having active hydrogen atoms; (B) an organo-metallic compound of aluminium containing heteroatoms selected from oxygen, nitrogen and sulphur; and (C) a compound of a transition metal selected from those of groups IVb, Vb or VIb of the Periodic Table of the Elements, containing ligands of the cyclopentadienyl type. These supported catalysts, obtainable in the form of spherical particles, can be used in the polymerization reaction of olefins either in liquid or in gas phase, thus producing polymers endowed with a controlled morphology and with a high bulk density.Type: GrantFiled: June 8, 2000Date of Patent: September 3, 2002Assignee: Basell Technology Company BVInventors: Enrico Albizzati, Tiziano Dall'Occo, Luigi Resconi, Fabrizio Piemontesi
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Patent number: 6437063Abstract: The present invention concerns a process for producing a propylene polymer nucleated with a polymeric nucleating agent containing vinyl compound units. The method comprises modifying a catalyst by polymerizing a vinyl compound in the presence of said catalyst in a medium, which does not essentially dissolve the polymerized vinyl compound, and by continuing the polymerization of the vinyl compound until the concentration of unreacted vinyl compounds is less than about 0.5 wt-%. The thus obtained modified catalyst composition is used for polymerizing propylene optionally together with comonomers to produce in the presence of said modified catalyst composition. Modification of the catalyst according to the present invention will reduce production costs and provide highly reliable catalyst activity.Type: GrantFiled: June 23, 2000Date of Patent: August 20, 2002Assignee: Borealis Technology OyInventors: Amir Karbasi, Pauli Leskinen, Pirjo J{umlaut over (aa)}skeläinen, Bo Malm, Päivi Pitkänen, Mika Härkönen, John Haugen
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Patent number: 6437060Abstract: A process for the polymerisation of olefins in the gas phase is carried out in the presence of a supported transition metal catalyst. The process involves a prepolymerisation step which may be performed in-situ and in particular the prepolymer may be prepared in the dry phase. The catalyst may for example comprise a constrained geometry transition metal complex supported on silica and used in the presence of an activator. The prepolymerisation step enables the activity of the catalyst to be improved.Type: GrantFiled: December 23, 1999Date of Patent: August 20, 2002Assignee: BP Chemicals LimitedInventors: Peter James Maddox, Peter Sefton Williams
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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: 6423660Abstract: Supported catalysts for the polymerization of olefins comprise the following components: (A) a porous organic support functionalised with groups having active hydrogen atoms; (B) an organo-metallic compound of aluminium containing heteroatoms selected from oxygen, nitrogen and sulphur; and (C) a compound of a transition metal selected from those of groups IVb, Vb or VIb of the Periodic Table of the Elements, containing ligands of the cyclopentadienyl type. These supported catalysts, obtainable in the form of spherical particles, can be used in the polymerization reaction of olefins either in liquid or in gas phase, thus producing polymers endowed with a controlled morphology and with a high bulk density.Type: GrantFiled: January 9, 1998Date of Patent: July 23, 2002Assignee: Basell Technology Company BVInventors: Enrico Albizzati, Tiziano Dall'Occo, Luigi Resconi, Fabrizio Piemontesi
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Patent number: 6384159Abstract: The present invention relates to a process to produce polyethylene through homopolymerization or copolymerization of ethylene with alpha-olefins in the presence of a titanium amide catalyst supported by an organic polymer material, for the production of moldings, such as through extrusion, injection molding, film blowing, sintering under pressure or ram extrusion. The catalyst according to the present invention contains a partially chloromethylated styrene divinyl benzene copolymer as the organic polymer material, a complex compound supported by it, which contains Mg, Al and Ti.Type: GrantFiled: April 21, 2000Date of Patent: May 7, 2002Assignee: Buna Sow Leuna Olefinverbund GmbHInventors: Jürgen Schellenberg, Heinz-Jürgen Kerrinnes, Gerd Fritzsche, Gerd Lohse
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Publication number: 20020028892Abstract: A prepolymerization catalyst for use in a gas phase polymerization of an olefin or combinations of olefins which comprises (A) a solid catalyst component comprising magnesium, halogen, titanium and an electron donor and having a weight-average particle diameter of 15 to 45 &mgr;m, (B) at least one organoaluminum compound and (C) a prepolymer of an ethylene and/or at least one &agr;-olefin, wherein the molar ratio of aluminum to titanium in the prepolymerization catalyst (Al/Ti ratio) is 3 to 11 (mol/mol), the weight ratio of the prepolymerization catalyst to the solid catalyst component (prepolymerization catalyst/solid catalyst component) is 2 to 35 (g/g), the content of volatile materials (VM) in the prepolymerization catalyst is 2.0% by weight or less, and the intrinsic viscosity [&eegr;] measured in tetralin at 135° C. is 2.0 dl/g or less, and a process for a production thereof.Type: ApplicationFiled: March 30, 2001Publication date: March 7, 2002Inventors: Tomoaki Goto, Kazuki Wakamatsu, Shinichi Kumamoto
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Patent number: 6353063Abstract: A process for producing a polyolefin in the presence of a transition metal-containing metallocene catalyst that maintains stable operation for long periods of time without suffering from adhesion of the produced polymer to the wall of a reactor or formation of a sheet-like polymer or a massive polymer. The process utilizes a transition metal-containing metallocene catalyst and an organoaluminum compound represented by formula: R1nAl(OR2)3−n, wherein R1 represents a C1-20 alkyl group, an aryl group, hydrogen or halogen; R2 represents a C1-20 alkyl group or an aryl group; and n is a number selected from 0≦n<3, under conditions such that the temperature of the wall of a polymerization reactor, Tw (° C.), and the polymerization temperature, Tr (° C.), satisfy the relationship: 0.5<Tr−Tw<10.Type: GrantFiled: March 24, 2000Date of Patent: March 5, 2002Assignee: Japan Polychem CorporationInventors: Masafumi Shimizu, Yoshiyuki Ishihama, Akihira Watanabe
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Publication number: 20010053831Abstract: A polypropylene composition comprising 0.001 to 10 parts by weight of a polyethylene having an intrinsic viscosity [&eegr;E] of 0.01 to less than 15 dl/g s measured in tetralin at 135° C. and 100 parts by weight of a polyolefin comprising at least polypropylene, wherein the polyethylene is finely dispersed as particles with a number average particle diameter of, e.g., 1 to 5000 nm in the polyolefin comprising at least polypropylene. By virtue of the above constitution, the polypropylene composition has excellent transparency and rigidity, is free from the creation of a sweeper roll flow mark in the preparation of a film and substantially free from a neck-in phenomenon of a film, and has high productivity.Type: ApplicationFiled: January 11, 1999Publication date: December 20, 2001Inventors: KATSUHIKO OHNO, MASAMI KIMURA, TAKETO HIROSE, YOSHITAKA MORIMOTO, JUN SAITO
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Publication number: 20010051697Abstract: Catalysts that have been preactivated and/or prepolymerized are disclosed whereby a magnesium and titanium-containing procatalyst component is contacted with a co-catalyst and an external electron donor (and optionally with an olefin monomer to prepare a prepolymerized catalyst) prior to polymerization to form a preactivated and/or prepolymerized catalyst. The preactivated and/or prepolymerized catalyst then is separated from the mixture, and dried to form a solid preactivated and/or prepolymerized catalyst. This dried catalyst then can be stored and subsequently shipped to a polymerization site where it can be used in gas phase polymerization. The preactivated and/or prepolymerized catalyst can be used in gas phase polymerization as extremely high activity catalysts, and do not cause a rapid rise in reaction temperature causing overheating, undesirable formation of agglomerates, coagulation of polymer, and ultimately, reactor failure.Type: ApplicationFiled: June 29, 2001Publication date: December 13, 2001Inventor: David Bell Morse
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Patent number: 6313225Abstract: Disclosed is a catalyst for olefin (co-)polymerization comprising a transition metal compound catalytic component which contains at least a titanium compound and an &agr;-olefin (co-)polymer (A) supported by the catalyst, wherein said &agr;-olefin (co-)polymer (A) has an intrinsic viscosity (&eegr;) of 15 dl/g to 100 dl/g measured in tetrahydronaphthalene at 135° C., and the content of said olefin (co-)polymer (a) is 0.01 to 5000 g for 1 g of the transition compound catalytic component.Type: GrantFiled: September 14, 1998Date of Patent: November 6, 2001Assignee: Chisso CorporationInventors: Jun Saito, Hideo Nobuhara, Hitoshi Sato
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Patent number: 6306996Abstract: The present invention relates to polybutene-1 homopolymers, or copolymers containing up to 20% by weight of alpha olefins having from 2 to 10 carbon atoms other than butene-1, characterized by the following properties: (i) an isotactic index (mmmm %), measured by NMR analysis according to the method specified below, of higher than 93; (ii) a Molecular Weight Distribution (MWD) in terms of Mw/Mn, measured by GPC analysis according to the method specified below, of higher than 6; and (iii) a content of catalytic residues expressed in terms of Ti ppm of lower than 50. Said polymers are very suitable for the preparation of articles, in particular pipes, having improved creep and burst stress resistance.Type: GrantFiled: March 4, 1999Date of Patent: October 23, 2001Assignee: Basell Technology Company B.V.Inventors: Giuliano Cecchin, Gianni Collina, Massimo Covezzi
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Publication number: 20010025091Abstract: The invention provides a polymer of ethylene as a first component or monomer, with a branched olefin as a second component or monomer, and at least one different olefin as a third component or monomer. The olefins can be obtained from a Fischer-Tropsch process.Type: ApplicationFiled: March 12, 2001Publication date: September 27, 2001Applicant: SASOL TECHNOLOGY (PROPRIETARY) LIMITEDInventors: Ioan Tincul, Dawid Johannes Joubert, Desmond Austin Young
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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: 20010007008Abstract: The present invention provides a catalyst system that exhibits unexpected control of desired properties in copolymer product.Type: ApplicationFiled: February 27, 2001Publication date: July 5, 2001Inventors: Edwar S. Shamshoum, David J. Rauscher, Theodore G. Harris
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Publication number: 20010004657Abstract: An olefin (co-)polymer composition including 0.01 to 5.0 weight parts of high molecular weight polyethylene which is an ethylene homopolymer or an ethylene-olefin copolymer containing 50 weight % or more of an ethylene polymerization unit; and 100 weight parts of an olefin (co-)polymer other than the high molecular weight polyethylene, wherein said high molecular weight polyethylene has an intrinsic viscosity [&eegr;E] of 15 to 100 dl/g measured in tetralin at 135° C. or more, and said high molecular weight polyethylene exists as dispersed fine particles having a numerical average particle size of 1 to 5000 nm.Type: ApplicationFiled: September 14, 1998Publication date: June 21, 2001Applicant: CHISSO CORPORATIONInventors: JUN SAITO, HIDEO NOBUHARA, SHINGO KIKUKAWA, HITOSHI SATO, AKIRA YAMAUCHI
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Patent number: 6245866Abstract: A process of producing polyethylene, the process comprising copolymerizing ethylene and an alpha-olefinic comonomer comprising from 3 to 8 carbon atoms in the presence of a chromium-based catalyst in a main polymerization reactor and, in a gas-phase preliminary reactor upstream of the main polymerization reactor, chemically treating the chromium-based catalyst with at least one treatment agent prior to introduction of the catalyst into the main polymerization reactor and releasing from the preliminary reactor waste gases produced during the chemical treatment.Type: GrantFiled: January 18, 2000Date of Patent: June 12, 2001Assignee: Fina Research, S.A.Inventor: Guy Debras
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Patent number: 6245870Abstract: The invention provides a metallocene catalyst for use in preparing syndiotactic/isotactic block polyolefins. The catalyst comprises a bridged metallocene in which one of the cyclopentadienyl rings is substituted in a substantially different manner from the other ring and the cyclopentadienyl rings have lack of bilateral or pseudo-bilateral symmetry.Type: GrantFiled: June 7, 1995Date of Patent: June 12, 2001Assignee: Fina Technology, Inc.Inventor: Abbas Razavi
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Patent number: 6242544Abstract: A very effective catalyst system for the polymerization or copolymerization of olefins comprises a cocatalyst, preferably an aluminoxane or a supported aluminoxane, and a metallocene of the formula I in which, in the preferred form, M1 is Zr or Hf, R1 and R2 are halogen or alkyl, R3 is alkyl, R4 to R12 are alkyl or hydrogen and R13 is a (substituted) alkylene or heteroatom bridge. The metallocenes, in particular the zirconocenes, produce polymers of very high molecular weight, in the case of prochiral monomers polymers of very high molecular weight, very high stereotacticity and very high melting point, at high catalyst activities in the industrially interesting temperature range between 50 and 80° C.Type: GrantFiled: December 30, 1997Date of Patent: June 5, 2001Assignee: Targor GmbHInventors: Frank Küber, Bernd Bachmann, Walter Spaleck, Andreas Winter, Jürgen Rohrmann
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Patent number: 6235854Abstract: The invention provides a process for preparing a solid titanium catalyst component for use in the preparation of an olefin polymerization catalyst, which comprises: (1) a step wherein a suspension is prepared which contains a solid material prepared by contacting a magnesium compound with a first titanium compound and having a polybasic carboxylic acid ester supported thereon; (2) a step wherein the solid material is separated from the suspension; and (3) a step wherein the solid material is contacted with a second titanium compound under heating; wherein while the solid material is separated from the suspension in the step (2) and the solid material is supplied to the step (3), the solid material is maintained at a temperature in the range of 70-130° C.Type: GrantFiled: June 10, 1997Date of Patent: May 22, 2001Assignee: Mitsui Chemicals, Inc.Inventors: Mamoru Kioka, Shinichi Kojo, Tsuneo Yashiki
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Patent number: 6221802Abstract: The invention comprises a catalyst support containing an &agr;-olefin polymer which is in the form of particles of mean size from 5 to 350 &mgr;m in which the pore volume generated by the pores of radius from 1,000 to 75,000 Å is at least 0.2 cm3/g. A catalyst usable for the polymerization of &agr;-olefins, including a compound containing at least one transition metal belonging to groups IIIb, IVb, IVb and VIb of the Periodic Table, bound in or on this support, is also described.Type: GrantFiled: January 16, 1998Date of Patent: April 24, 2001Assignee: Solvay Polyolefins Europe-BelgiumInventors: Jean-Louis Costa, Vincent Laurent, Philippe Francois, Dirk Vercammen
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Patent number: 6218331Abstract: The present invention is directed to a process of preparing a novel supported Ziegler-Natta catalyst useful for the polymerization of &agr;-olefins. More specifically, the supported Ziegler-Natta catalyst of the present invention comprises a particulate functionalized copolymeric support, at least one organometallic compound or complex and at least one transition metal compound. A novel method of preparing the particulate functionalized copolymeric support of the instant invention is also provided.Type: GrantFiled: June 27, 1997Date of Patent: April 17, 2001Assignee: Equistar Chemicals, L.P.Inventors: Anthony-J. DiMaio, Craig C. Meverden, Peter D. Becker
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Patent number: 6214948Abstract: Process for the polymerization of olefins using a catalytic system comprising a solid precursor containing at least one neutral halogenated metallocene derived from a transition metal and at least one ionizing agent, and an organometallic compound derived from a metal chosen from groups IA, IIA, IIB, IIIA, and IVA of the Periodic Table.Type: GrantFiled: April 13, 1998Date of Patent: April 10, 2001Assignee: Solvay Polyolefins Europe-BelgiumInventor: Nicola Zandona
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Olefin polymerization catalyst and process for preparing polypropylene and propylene block copolymer
Patent number: 6214939Abstract: The present invention provides olefin polymerization catalysts and processes for preparing a polypropylene and a propylene block copolymer using the olefin polymerization catalysts. The olefin polymerization catalyst (1) of the invention is formed from: (I-1) a contact product obtained by contacting: (A) a solid titanium catalyst component, (B) an organometallic compound catalyst component, and (C) a specific organosilicon compound; (II-1) (D) a specific polyether compound; and optionally, (III) an organometallic compound catalyst component. The olefin polymerization catalyst (2) of the invention is formed from: (I-2) a contact product obtained by contacting: (A) a solid titanium catalyst component, (B) an organometallic compound catalyst component, and (D) a specific polyether compound; (II-2) (C) a specific organosilicon compound; and optionally, (III) an organometallic compound catalyst component.Type: GrantFiled: June 3, 1998Date of Patent: April 10, 2001Assignee: Mitsui ChemicalsInventors: Tetsunori Shinozaki, Mamoru Kioka -
Patent number: 6214953Abstract: An olefinic polymer having improved molecular weight distribution and bulk density is prepared by polymerizing an olefinic monomer and, optionally, a comonomer in the presence of a supported catalyst comprising a modified metallocene and an alkylaluminoxane supported on a carrier in an aliphatic hydrocarbon solvent, the modified metallocene being derived from a metallocene of formula(I) by introducing at least one C5-20 alkyl substituent into a &pgr;-ligand, C1-4 alkylene bridge or silicon bridge thereof and the alkylaluminoxane having a repeating unit of formula(II): wherein: M is Ti, Zr or Hf; X is a halogen, or a C1-3 alkyl group; L1 and L2 are each a &pgr;-ligand selected from the group consisting of cyclopentadienyl, indenyl, fluorenyl and derivatives thereof, and are optionally linked together by a C1-4 alkylene bridge or by a silicon bridge; m is an integer of 2 or more; and R1 is a C1-20 alkyl group.Type: GrantFiled: February 3, 1999Date of Patent: April 10, 2001Assignee: LG Chemical LimitedInventors: Jae-Seung Oh, Tai-Ho Park, Bun-Yeoul Lee
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Patent number: 6197899Abstract: A process is disclosed for the particle form polymerization of olefins. The process employs a titanium-containing having hydrocarbon soluble titanium components. The resulting catalyst is pretreated with an organometallic reducing agent prior to the introduction of the catalyst into the polymerization zone to give a catalyst which can be used satisfactorily in a loop reactor with lower levels of cocatalyst.Type: GrantFiled: February 27, 1995Date of Patent: March 6, 2001Assignee: Phillips Petroleum CompanyInventors: Kent E. Mitchell, Max P. McDaniel, M. Bruce Welch, Elizabeth A. Benham, Grover W. Cone
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Patent number: 6194527Abstract: A two-step olefin polymerization process is disclosed. A single-site catalyst precursor reacts with a boron-containing activator and a first olefin substantially in the absence of an alumoxane to produce a stable, prepolymer complex, which is then used to polymerize a second olefin in the presence of a scavenging amount of an alumoxane. The process gives high molecular weight polyolefins with low residual aluminum contents. Boron-containing activators can be used, even at reaction temperatures greater than 100° C., while maintaining high catalyst activity.Type: GrantFiled: September 22, 1999Date of Patent: February 27, 2001Assignee: Equistar Chemicals, L.P.Inventor: Leonard V. Cribbs
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Patent number: 6189236Abstract: A method of reducing the purge gas consumption, dry-down time, or both required for start-up and operation of a gas phase fluidized bed reactor system. The method involves contacting a stream of cycle gas having water and/or a polar hydrocarbon with an adsorbing material while the cycle gas is in a closed circulation loop.Type: GrantFiled: November 5, 1998Date of Patent: February 20, 2001Assignee: Union Carbide Chemicals & Plastics Technology CorporationInventors: David Mason Gaines, Philip Everett Harrison, Roger Brady Painter, Bill Jack Garner
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Patent number: 6166153Abstract: The invention provides a process for commercial production of syndiotactic polyolefins using a metallocene catalyst supported on silica treated with MAO. The invention includes contacting the supported metallocene catalyst with an aluminum alkyl and aging the catalyst prior to polymerization. In addition, the catalyst is prepolymerized in a tubular reactor prior to being introduced into the polymerization reaction zone.Type: GrantFiled: May 28, 1998Date of Patent: December 26, 2000Assignee: Fina Technology, Inc.Inventors: Edwar S. Shamshoum, Christopher G. Bauch, B. Raghava Reddy, David J. Rauscher, Kevin P. McGovern
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Patent number: 6166152Abstract: A method for producing a low density copolymer of ethylene and 1-hexene having a density in the range of about 0.915 to about 0.930 grams/cc in a continuous loop reactor under slurry phase reactor conditions in the presence of a liquid diluent comprising (a) using a prepolymerized solid particulate metallocene catalyst system, (b) combining the catalyst system with a liquid diluent, and (c) agitating the mixture of (b) to form a liquid mixture containing catalyst system particles that are substantially uniform in size, (d) passing this liquid mixture into the loop reactor, (e) not adding any hydrogen, (f) employing the temperature in the range of about 170.degree. F. to about 180.degree. F., (g) employing ethylene in an amount equal to about 5 to about 6 weight % of the liquid diluent and the loop reactor, and (h) employing 1-hexene in an amount equal to about 1.5 to about 2.5 weight % of the liquid diluent in the loop reactor.Type: GrantFiled: February 26, 1998Date of Patent: December 26, 2000Assignee: Phillips Petroleum CompanyInventors: Elizabeth A. Benham, Carleton E. Stouffer, Jose M. Dionisio, Steven J. Secora, John N. DeGood, III, Robert W. Bohmer, Michael C. Carter
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Patent number: 6153710Abstract: An olefin (co)polymer composition comprising, as major components, (a) 0.01 to 5 parts by weight of an olefin (co)polymer having an intrinsic viscosity [.eta..sub.a ] as measured in 135.degree. C. tetralin of 15 to 100 dl/g and (b) 100 parts by weight of an olefin (co)polymer obtained by using a metallocene catalyst and having an intrinsic viscosity [.eta..sub.b ] as measured in 135.degree. C. tetralin of 0.2 to 10 dl/g. When polyethylene having a high degree of polymerization is produced before a so-called metallocene catalyst is used to polymerize, e.g., propylene in the presence of the polyethylene as a component of a catalyst composition, a polypropylene composition having a high melt tension and a high crystallization temperature is produced.Type: GrantFiled: September 22, 1998Date of Patent: November 28, 2000Assignee: Chisso CorporationInventors: Jun Saito, Shingo Kikukawa, Tsutomu Ushioda, Akiko Kageyama, Mototake Tsutsui
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Patent number: 6127495Abstract: Polymers of C.sub.2 -C.sub.12 -alkenes are prepared at from -50 to 300.degree. C. and from 0.5 to 3000 bar in the presence of a catalyst system by a process in which a compound of the general formula I ##STR1## where M.sup.1 is boron, aluminum, gallium, indium or thallium andR.sup.1 and R.sup.2 are each hydrogen, C.sub.1 -C.sub.10 -alkyl, C.sub.6 -C.sub.15 -aryl, alkylaryl or arylalkyl each having 1 to 10 carbon atoms in the alkyl radical and 6 to 20 carbon atoms in the aryl radical, or 5- to 7-membered cycloalkyl which in turn may carry C.sub.1 -C.sub.10 -alkyl as a substituent, or R.sup.1 and R.sup.2 together form a cyclic group, is added of 4 to 15 carbon atoms.Type: GrantFiled: May 30, 1997Date of Patent: October 3, 2000Assignee: BASF AktiengesellschaftInventors: Joachim Rosch, Wolfgang Bidell, Franz Langhauser