Patents Represented by Attorney William R. Reid
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Patent number: 7569647Abstract: A process for producing a copolymer of ethylene containing from 0.1 to 99% by mol of one or more derived units of alpha-olefins of formula CH2?CHA, wherein A is a C2-C20 alkyl radical, comprising contacting, under polymerization conditions, ethylene and one or more alpha-olefins in the presence of a catalyst system obtainable by contacting: a) a metallocene compound of formula (I): wherein M is zirconium, titanium or hafnium; X, same or different, is a hydrogen atom, a halogen atom, or an hydrocarbon group; R1, is a hydrocarbon group; R2 R3, R4, R5 and R6, are hydrogen atoms or hydrocarbon groups; Q is a radical of formula (II), being bonded to the indenyl at the position marked by the symbol *; (II) wherein: T1, T2, T3, T4 and T5, are carbon atoms (C) or nitrogen atoms (N); m1, m2, m3, m4 and m5 are 0 or 1; R7, R8, R9, R10 and R11 are hydrogen atoms or hydrocarbon groups; and b) an alumoxane or a compound capable of forming an alkyl metallocene cation.Type: GrantFiled: September 10, 2003Date of Patent: August 4, 2009Assignee: Basell Polyolefine GmbHInventors: Luigi Resconi, Nicoletta Mascellani
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Patent number: 7569648Abstract: A process for producing a polymer of ethylene containing from 0.1 to 50% by weight of one or more derived units of alpha-olefins fo formula CH2?CHR, wherein R is a C2-C20 alkyl radical, comprising contacting, under polymerization conditions, ethylene and one or more alpha-olefins in the presence of a catalyst system obtainable by contacting: a) a metallocene compound of formula (I) wherein: M is zirconium titanium or hafminum, X, equal to or different from each other, is hydrogen halogen or an hydrocarbyl radical, R1, R2, R3, R4, R5, R6, R7, R8 and R9, equal to or different from each other are hydrogen atoms, halogen atoms, or hydrocarbyl radicals; and b) an alumoxane or a compound capable of forming an alkyl metallocene cation.Type: GrantFiled: February 10, 2003Date of Patent: August 4, 2009Assignee: Basell Polyolefine GmbHInventors: Anna Fait, Alexander Koeppl, Luigi Resconi
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Patent number: 7556489Abstract: The invention relates to a device for partitioning the plastic parisons to give at least one semifinished open-surface product (6), where the device encompasses at least one means of partitioning (3) the plastic parison and one means of drive (2). The means of drive may be composed of one, but preferably of two, driven rolls. It has been found that use of the device of the invention can reduce or prevent the production of creasing and irregularity at the margins, i.e. at the cut edges, of the partitioned parisons, i.e. of the resultant semifinished sheets.Type: GrantFiled: July 9, 2003Date of Patent: July 7, 2009Assignee: Basell Polyolefine GmbHInventors: Wolfgang Rohde, Jörg Meyer, Rainer Sattel, Jörg Schnorr, Bernhard Springholz, Roger Weinlein, Andreas Wüst
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Patent number: 7557161Abstract: Propylene polymer compositions comprising (by weight): A) from 15% to 60% with C4-C8 alpha-olefin(s), containing more than 10%, but less than 14%, of said C4-C8 alpha-olefins (s); B) from 40% to 85% of a copolymer of propylene with C4-C8 alpha-olefin(s), preferably butene, containing from 14% to 30% of said C4-C8 alpha-olefin(s), and optionally from 0.5% to 3% of ethylene; provided that the total content of C4-C8 alpha-olefin(s) in the propylene polymer composition be higher than 10%.Type: GrantFiled: October 4, 2002Date of Patent: July 7, 2009Assignee: Basell Poliolefine Italia S.p.A.Inventors: Anteo Pelliconi, Enea Garagnani, Paola Sgarzi
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Patent number: 7553916Abstract: Process for polymerizing at least one olefinic monomer in a loop reactor at from 20 to 150° C., but below the melting point of the polymer to be formed, and a pressure of from 5 to 100 bar, where the polymer formed is present in a suspension in a liquid or supercritical suspension medium and this suspension is circulated by means of an axial pump, wherein the loop reactor comprises a cyclic reactor tube whose diameter varies by at least 10%, based on the predominant reactor tube diameter, and in which there is at least one widening and narrowing in a region other than that of the axial pump.Type: GrantFiled: September 16, 2004Date of Patent: June 30, 2009Assignee: Basell Polyolefine GmbHInventors: Shahram Mihan, Wolfgang Gsella, Peter Kölle, Joachim Wulff-Döring
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Patent number: 7544749Abstract: A catalyst system obtained by reacting at least one chiral transition metal compound and at least one cocatalyst, where the chiral transition metal compound is a transition metal compound of formula (Ia) or one of its enantiomers of the formula (Ia*), where M is an element of Group 4, Z are each halogen, hydrogen, C1-C10-alkyl, C6-C14-aryl, alkylaryl or arylalkyl having from 1 to 4 carbon atoms in the alkyl part and from 6 to 10 carbon atoms in the aryl part, n1 and n2 are each 0 or 1, R1 and R2 are each a C1-C40 radical, or R1 and R2 together with the atoms connecting them form a cyclic or polycyclic ring system, R5 and R6 are each hydrogen or a C1-C40 radical, R10, R11 are each hydrogen, t-butyl or phenyl, R12 are each t-butyl or phenyl, and R13 are each hydrogen or a C1-C40 radical.Type: GrantFiled: February 5, 2004Date of Patent: June 9, 2009Assignee: Basell Polyolefine GmbHInventors: Robert L. Jones, Naka Seidel, Michael J. Elder, John A. Ewen
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Patent number: 7538174Abstract: An isotactic 1-butene copolymer having a content up to 30% by mol of at least one alpha-olefin of formula CH2?CHZ derived units, wherein Z is a C3-C20 hydrocarbon group, having the following features: isotactic pentads (mmmm) >90%; and a percentage of soluble fraction in diethylether (% SD) and a molar content of said alpha olefins (% O) in the polymer chain meeting the following relation: % SD>2.8% O+8.Type: GrantFiled: October 30, 2007Date of Patent: May 26, 2009Assignee: Basell Polyolefine GmbHInventors: Luigi Resconi, Anteo Pelliconi, Enea Garagnani
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Patent number: 7534841Abstract: A 1-butene polymer optionally containing from 0 to 30% by mol of derived units of ethylene, propylene or alpha-olefin of formula CH2?CHZ, wherein Z is a C3-C20 linear or branched alkyl radical, having the following features: a) distribution of molecular weight (Mw/Mn) lower than 4; b) Melt flow rate (MFR) measured according to ISO 1133 (190° C., 2.16 kg); c) Intrinsic viscosity (IV) measured in tetrahydronaftalene (THN) at 135° C. lower than 0.8 dl/g; d) melting point higher than 100° C.; e) isotactic pentads (mmmm) measured with 13C-NMR operating at 100.61 MHz higher than 90%; f) 4,1 insertions not detectable at a C13-NMR operating at 100.61 MHz; and g) a yellowness index lower than 0.Type: GrantFiled: September 29, 2005Date of Patent: May 19, 2009Assignee: Basell Polyolefine GmbHInventors: Luigi Resconi, Maria Silvia Tonti, Friederike Morhard
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Patent number: 7534848Abstract: A process comprising contacting 1-butene and one or more alpha-olefins under polymerization conditions in the presence of a catalyst system obtainable by contacting: (A) a metallocene compound of formula (I) wherein: M is an atom of a transition metal; p is an integer from 0 to 3; X, same or different, are hydrogen atoms, halogen atoms, or an hydrocarbon group; L is a divalent bridging group; R1 and R3 are hydrocarbon groups; R2 and R4 are hydrogen atoms or hydrocarbon groups; T1 and T2, equal to or different from each other are a moiety of formula (II), (III) or (IV): wherein: R5, R6, R7, R8 and R9, equal to or different from each other, are hydrogen or hydrocarbon groups; and (B) an alumoxane or a compound able to form an alkylmetallocene cation.Type: GrantFiled: November 14, 2003Date of Patent: May 19, 2009Assignee: Basell Polyolefine GmbHInventors: Luigi Resconi, Anteo Pelliconi, Enea Garagnani
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Patent number: 7531609Abstract: A solution polymerization process for obtaining isotactic, crystalline or crystallizable 1-butene/propylene polymers comprising contacting under polymerization conditions at a temperature ranging from 50° C. to 90° C. 1-butene and propylene in the presence of a catalyst system obtainable by contacting: a) at least one metallocene compound; b) an alumoxane or a compound capable of forming an alkyl metallocene cation; and optionally c) an organo aluminum compound; wherein the polymerization medium consists of a mixture of 1-butene and propylene wherein the content of propylene in the liquid phase ranges from 1% to 60% by weight.Type: GrantFiled: October 20, 2005Date of Patent: May 12, 2009Assignee: Basell Poyloefine GmbHInventors: Luigi Resconi, Simona Guidotti, Friederike Morhard, Anna Fait
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Patent number: 7524903Abstract: A process for preparing heterophasic propylene copolymers by polymerizing propylene in the presence of a polymerization catalyst and hydrogen as a molecular weight regulator, the process comprising the following steps: a) polymerizing in gas- or liquid-phase propylene to prepare a crystalline polymer fraction; b) copolymerizing ethylene with propylene and/or 1-butene, and optionally one or more alpha-olefin comonomers C5-C12, in a gas-phase reactor having interconnected polymerization zones, wherein the growing polymer particles flow upward through a first polymerization zone (riser) under fast fluidization or transport conditions, leave said riser and enter a second polymerization zone (downcomer) through which they flow downward under the action of gravity.Type: GrantFiled: December 9, 2005Date of Patent: April 28, 2009Assignee: Basell Poliolefine Italia s.r.l.Inventors: Gabriele Mei, Joachim T. M. Pater, Stefano Bertolini
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Patent number: 7514508Abstract: Process for preparing a broad molecular weight polyethylene by polymerizing ethylene in the presence of a polymerization catalyst, the process comprising the following steps, in any mutual order: a) polymerizing ethylene, optionally together with one or more ?-olefinic comonomers having from 3 to 12 carbon atoms, in a gas-phase reactor in the presence of hydrogen, b) copolymerizing ethylene with one or more ?-olefinic comonomers having from 3 to 12 carbon atoms in another gas-phase reactor in the presence of an amount of hydrogen less than step a), where in at least one of said gas-phase reactors the growing polymer particles flow upward through a first polymerization zone under fast fluidization or transport conditions, leave said first polymerization zone and enter a second polymerization zone through which they flow downward under the action of gravity.Type: GrantFiled: July 19, 2004Date of Patent: April 7, 2009Assignee: Basell Poliolefine Italia s.r.l.Inventors: Gerben Meier, Massimo Covezzi, Pietro Baita, Gabriele Mei
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Patent number: 7507688Abstract: Monocyclopentadienyl complexes in which the cyclopentadienyl system bears at least one unsubstituted, substituted or fused, 5-membered heteroaromatic ring system bound via a specific bridge, a catalyst system comprising at least one of the monocyclopentadienyl complexes, the use of the catalyst system for the polymerization or copolymerization of olefins and a process for preparing polyolefins by polymerization or copolymerization of olefins in the presence of the catalyst system and polymers obtainable in this way.Type: GrantFiled: December 5, 2003Date of Patent: March 24, 2009Assignee: Basell Polyolefine GmbHInventors: Shahram Mihan, Ilya Nifant'ev, Cristina Nicoara, Markus Enders
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Patent number: 7504354Abstract: The present invention relates to organometallic transition metal compounds of the formula (I), a catalyst composition comprising at least one of the organometallic transition metal compound and an olefin polymerization process in the presence of one of the catalyst composition.Type: GrantFiled: November 2, 2004Date of Patent: March 17, 2009Assignee: Basell Polyolefine GmbHInventors: Michael J. Elder, Robert L. Jones, John A. Ewen
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Patent number: 7504352Abstract: A catalyst for use in the formation of polypropylene is disclosed that comprises a titanium compound having at least one titanium-halogen bond, supported on an activated, amorphous magnesium dihalide support that is essentially free of alkoxy functionality, with a titanium metal content of no more than about 2 wt %, based on the weight of the support, and an internal donor component.Type: GrantFiled: May 3, 2002Date of Patent: March 17, 2009Assignee: Basell Polidefine Italia s.r.l.Inventors: Ronald Alan Epstein, William Thomas Wallack
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Patent number: 7476717Abstract: A 1-butene homopolymer having the following characteristics: intrinsic viscosity (I.V.)>0.7 dL/g isotactic triads (mm)>70%; 4,1 insertions<1%; a flexural modulus (ASTM D 638)>400 Mpa; melting point>105° C.Type: GrantFiled: March 15, 2006Date of Patent: January 13, 2009Assignee: Basell Polyolefine GmbHInventor: Luigi Resconi
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Patent number: 7465818Abstract: A process for the racemoselective preparation of ansa-metallocene complexes of the formula (I), where R1, R1?, R2, R2? are identical or different and are each hydrogen or an organic radical having from 1 to 40 carbon atoms, R3, R3? are identical or different and are each an organic radical having from 1 to 40 carbon atoms, T, T? are identical or different and are each a divalent organic group which has from 1 to 40 carbon atoms, A is a divalent atom or a divalent group, Z is a divalent atom or a divalent group, E is P, As or Sb, M1 is an element of group 4 of the Periodic Table of the Elements, M2 is an alkali metal, an alkaline earth metal or a magnesium monohalide fragment, p is 1 or 2.Type: GrantFiled: June 30, 2005Date of Patent: December 16, 2008Assignee: Basell Polyolefine GmbHInventor: Lars Kölling
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Patent number: 7452949Abstract: The present invention relates to organometallic transition metal compounds of the formula (I)Type: GrantFiled: December 6, 2004Date of Patent: November 18, 2008Assignee: Basell Polyolefine GmbHInventors: Yoshikuni Okumura, Ilya Nifant'ev, Michael J. Elder, Pavel V. Ivchenko, Vladimir V. Bagrov
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Patent number: 7442667Abstract: The present invention relates to a process for preparing a supported cocatalyst for olefin polymerization, which comprises reacting A) a support bearing functional groups, B) triethylaluminum and C) a compound of the formula (I), (R1)x—A—OH)y??(I) where A is an atom of group 13 or 15 of the Periodic Table, R1 are identical or different and are each, independently of one another, hydrogen, halogen, C1-C20-alkyl, C1-C20-haloalkyl, C1-C10-alkoxy, C6-C20-aryl, C6-C20-haloaryl, C6-C20-aryloxy, C7-C40-arylalky, C7-C40-haloarylalkyl, C7-C40-alkylaryl, C7-C40-haloalkylaryl or an OSiR32 group, where R2 are identical or different and are each hydrogen, halogen, C1-C20-alkyl, C1-C20-haloalkyl, C1-C10-alkoxy, C6-C20-aryl, C6-C20-haloaryl, C6-C20-aryloxy, C7-C40-arylalkyl, C7-C40-haloarylalkyl, C7-C40-alkylaryl or C7-C40-haloalkylaryl, y is 1 or 2 and x is 3 minus y.Type: GrantFiled: December 22, 2004Date of Patent: October 28, 2008Assignee: Bosell Polyolefine GmbHInventors: Naka Seidel, Bodo Richter, Roland Kratzer
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Patent number: 7427649Abstract: The invention relates to a polyethylene composition with multi-modal molecular mass distribution, which is particularly suitable for blow molding of small containers with a volume in the range of from 200 to 5000 cm3 (=ml). The composition has a density in the range of from 0.955 to 0.960 g/cm3 at 23° C. and an MFR190/5 in the range from 0.8 to 1.6 dg/min. It composition from 45 to 55% by weight of a low-molecular-mass ethylene homopolymer A, from 20 to 35% by weight of a high-molecular-mass copolymer B made from ethylene and from another 1-olefin having from 4 to 8 carbon atoms, and from 20 to 30% by weight of an ultrahigh-molecular-mass ethylene copolymer C.Type: GrantFiled: December 6, 2003Date of Patent: September 23, 2008Assignee: Basell Polyolefine GmbHInventors: Joachim Berthold, Ludwig Böhm, Peter Krümpel, Rainer Mantel