Patents Assigned to Basell Polyolefin GmbH
-
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
-
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
-
Patent number: 7544826Abstract: Monocyclopentadienyl complexes in which the cyclopentadienyl system bears at least one bridged donor and at least one aryl group and a catalyst system comprising at least one of the monocyclopentadienyl complexes, and also processes for preparing them, 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 the preparation of the associated cyclopentadienyl system.Type: GrantFiled: December 14, 2004Date of Patent: June 9, 2009Assignee: Basell Polyolefine GmbHInventors: Shahram Mihan, Markus Enders, Pablo Fernandez
-
Patent number: 7544825Abstract: A method for making siloxy-bridged ligand precursors and metallocene complexes is disclosed. Indanone enolates react with cyclopentadienylsilyl compounds to produce ligand precursors, which are reacted with a Group 3-10 transition metal source to generate metallocene complexes. The method provides simple, regioselective access to particular siloxy-bridged metallocenes starting from easily elaborated indanones.Type: GrantFiled: June 12, 2008Date of Patent: June 9, 2009Assignee: Basell Polyolefine GmbHInventor: Michael Schiendorfer
-
Patent number: 7541473Abstract: Monocyclopentadienyl complexes in which the cyclopentadienyl system bears at least one unsubstituted, substituted or fused, 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 18, 2003Date of Patent: June 2, 2009Assignee: Basell Polyolefine GmbHInventors: Shahram Mihan, Nifant'ev Ilya
-
Patent number: 7541481Abstract: Monocyclopentadienyl complexes in which the cyclopentadienyl system bears at least one unsubstituted, substituted or fused, heteroaromatic ring system bound via a specific bridge, a catalyst system, comprising at least one of these 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 therewith.Type: GrantFiled: August 11, 2003Date of Patent: June 2, 2009Assignee: Basell Polyolefin GmbHInventors: Shahram Mihan, Ilya Nifant'ev
-
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
-
Patent number: 7534341Abstract: Method of metering at least one solid, particulate catalyst into a reactor containing a fluidized bed (11) of particles in an at least partly gaseous medium, in which the catalyst is metered discontinuously at prescribed time intervals into the fluidized bed (11) at at least one metering point (10). According to the present invention, a fluid stream is firstly introduced into the reactor (5) so that a region having a reduced particle density is formed in the fluidized bed (11) around the metering point (10) and the catalyst is subsequently metered into this region. As a result of the prior introduction of a fluid stream (“preblowing”) before the actual introduction of the catalyst, the catalyst can penetrate significantly deeper into the fluidized bed from the metering point due to the reduced particle density and is dispersed better.Type: GrantFiled: April 15, 2004Date of Patent: May 19, 2009Assignee: Basell Polyolefine GmbHInventors: Rainer Karer, Kaspar Evertz, Peter Kölle, Hans-Jacob Feindt
-
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
-
Patent number: 7534847Abstract: Copolymers of ethylene with ?-olefins which have a molar mass distribution Mw/Mn of from 1 to 8, a density of from 0.85 to 0.94 g/cm3, a molar mass Mn of from 10.000 g/mol to 4 000 000 g/mol and a CDBI of less than 50% and in which the side chain branching of the maxima of the individual peaks of the short chain branching distribution is in each case greater than 5 CH3/1 000 carbon atoms, a process for preparing them, a catalyst suitable for preparing them and fibers, moldings, films or polymer mixtures in which these copolymers are present.Type: GrantFiled: December 18, 2003Date of Patent: May 19, 2009Assignee: Basell Polyolefine GmbHInventors: Shahram Mihan, Dieter Lilge
-
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
-
Patent number: 7531672Abstract: The present invention relates to a process for preparing heterocyclic ketones of the formulae (I) and (la), by reacting a heterocyclic compound of the formula (II), with an ?, ?-unsaturated carboxylic acid of the formula (III), or with its anhydride of the formula (IV), where R1 is hydrogen or a C1-C40 carbon-containing group, R2 is hydrogen or a C1-C40 carbon-containing group, or R1 and R2 together form a cyclic ring system, R3 is a C1-C40 carbon-containing group and X is an element of the 16th group of the Periodic Table or is a divalent nitrogen group —(N—R4)—, where R4 is an electron-withdrawing radical which is selected from the group consisting of perhalogenated C1-C40 carbon-containing radicals and C1-C40 organosulfonyl groups.Type: GrantFiled: December 17, 2003Date of Patent: May 12, 2009Assignee: Basell Polyolefine GmbHInventors: Michael J. Elder, Robert L. Jones
-
Publication number: 20090118449Abstract: A polymerization process comprising contacting under polymerization conditions ethylene and at least one alpha olefin of formula CH2=CHA wherein A is a C2-C20 alkyl radical to obtain a copolymer containing from 95% by mol to 50% 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: May 7, 2009Applicant: Basell Polyolefine GmbHInventors: Francesca Focante, Luigi Resconi
-
Publication number: 20090118522Abstract: A process for preparing cyclopentadiene derivatives having formula (I) wherein T1 is selected from the group consisting of oxygen (O), or sulphur (S); R1, R2, R3 and R4, are hydrogen atoms, or hydrocarbon radicals; comprising the following steps: a) reacting a compound of formula (II) with a compound of formula (III) in the presence of a palladium or nickel based catalyst and a base; b) contacting the obtained compound with a carbonylating system; and c) treating the product obtained in step b) with a reducing agent.Type: ApplicationFiled: September 15, 2006Publication date: May 7, 2009Applicant: Basell Polyolefine GmbHInventor: Simona Guidotti
-
Patent number: 7527175Abstract: To meter catalysts into a reactor, the catalyst is firstly suspended in a hydrocarbon in a reservoir and the suspension obtained is kept in motion by stirring and then fed via a three-way metering valve and an ejector into the actual reactor, wherein the suspension containing the catalyst is firstly discharged from the reservoir by means of a pump and continuously circulated by returning the suspension via the three-way metering valve within a closed piping system to the reservoir, subsequently setting a pressure in the reservoir which is from 0.1 to 30 bar higher than the pressure in the reactor and then continuously introducing the suspension into the reactor via a flow meter which controls the three-way metering valve and via a downstream ejector by pulse operation of the now open three-way metering valve.Type: GrantFiled: January 30, 2002Date of Patent: May 5, 2009Assignee: Basell Polyolefine GmbHInventors: Hermann Gebhart, Volker Dolle, Elisabeth Glattki-Mayer, legal representative, Angel Sanchez, Herbert Plötz, Peter Götz, Franz Langhauser, Klaus-Peter Mayer
-
Publication number: 20090105414Abstract: Method for metering polar, antistatically acting process auxiliaries into a polymerization reactor in which the process auxiliaries are present in solution in a nonpolar solvent, wherein the electrical conductivity of the solution is measured and the amount of the process auxiliary metered in is determined from the electrical conductivity.Type: ApplicationFiled: May 4, 2007Publication date: April 23, 2009Applicant: Basell Polyolefine GmbHInventors: Shahram Mihan, Rainer Karer, Manfred Hecker
-
Publication number: 20090105422Abstract: A polyethylene molding composition having a multimodal molecular mass distribution and comprising from 45 to 55% by weight of a low molecular weight ethylene homopolymer A, from 20 to 40% by weight of a high molecular weight copolymer B comprising ethylene and another olefin having from 4 to 8 carbon atoms and from 15 to 30% by weight of an ultrahigh molecular weight ethylene copolymer C can be prepared in the presence of a Ziegler catalyst in a three-stage process and is highly suitable for producing pipes having excellent mechanical properties.Type: ApplicationFiled: August 17, 2006Publication date: April 23, 2009Applicant: Basell Polyolefine GmbHInventors: Joachim Berthold, Hansjorg Nitz, Werner Rothhoft, Heinz Vogt
-
Patent number: 7517938Abstract: Process for polymerizing at least one olefinic monomer selected from ethylene, propylene and 1-butene in a loop reactor in the presence of a polymerization catalyst at from 20 to 150° C., but below the melting point of a polymer to be formed, and a pressure of from 43 to 80 bar, where the polymer formed is present in a suspension in a liquid or supercritical suspension medium and wherein the suspension is circulated by means of an axial pump, wherein the polymerization is carried out at an average solids concentration in the reactor of more than 53% by weight, in the case of continuous product discharge, and at an average solids concentration in the reactor of more than 45% by weight, in the case of discontinuous product discharge, and wherein the polymerization is carried out at an ethylene concentration of at least 10 mol %, based on the suspension medium.Type: GrantFiled: September 16, 2004Date of Patent: April 14, 2009Assignee: Basell Polyolefine GmbHInventors: Shahram Mihan, Wolfgang Gsella, Peter Kölle, Joachim Wulff-Döring, Markus Meierhöfer
-
Patent number: 7507782Abstract: Transition metal complexes with tridentate, nitrogen-containing, uncharged ligand systems, a catalyst system comprising at least one of the transition metal 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.Type: GrantFiled: May 19, 2004Date of Patent: March 24, 2009Assignee: Basell Polyolefine GmbHInventors: Shahram Mihan, Markus Enders, Olaf Fritz
-
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
