Patents by Inventor Joachim T. M. Pater

Joachim T. M. Pater has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20110082270
    Abstract: A modified Ziegler-Natta catalyst system, a method for preparing the catalyst system, and a process for polymerizing an olefin in the presence of the catalyst system are disclosed. The catalyst system comprises a titanium or vanadium compound, an aluminum compound, and a pyridazine. Improved properties such as increased molecular weight and narrowed molecular weight distribution are obtained.
    Type: Application
    Filed: October 2, 2009
    Publication date: April 7, 2011
    Inventors: Sandor Nagy, Joachim T.M. Pater, Giampiero Morini
  • Patent number: 7871952
    Abstract: A modified Ziegler-Natta catalyst system, a method for preparing the catalyst system, and a process for polymerizing an olefin in the presence of the catalyst system are disclosed. The catalyst system comprises a titanium or vanadium compound, an aluminum compound, and a 2-hydroxypyridine N-oxide. Improved properties such as increased molecular weight are obtained.
    Type: Grant
    Filed: October 2, 2009
    Date of Patent: January 18, 2011
    Assignee: Equistar Chemicals, LP
    Inventors: Sandor Nagy, Joachim T. M. Pater, Giampiero Morini
  • Publication number: 20100160154
    Abstract: Catalyst precursors comprising Mg, Cl, Ti, and OR groups that are in molar ratios defined by the formula MgClnTip(OR)(2-n)+4p in which n is from 0.3 to less than 1.7, p is lower than 0.6, the molar ratio (OR)/Cl is lower than 4 and R is C1-C15 hydrocarbon groups. The said precursor, just upon activation with organo-Al compounds, are able to advantageously polymerize ethylene and alpha olefins, and that upon reaction with halogenating compounds generate in high yields catalyst components with high polymerization activity particularly in the polymerization of propylene also in combination with 1,3-diethers.
    Type: Application
    Filed: June 1, 2007
    Publication date: June 24, 2010
    Applicant: Basell Poliolefine Italia s.r.l.
    Inventors: Giampiero Morini, Antonio Cristofori, Benedetta Gaddi, Dario Liguori, Joachim T. M. Pater, Gianni Vitale
  • Patent number: 7687588
    Abstract: A process for the gas-phase polymerization of ?-olefÊns CH2?CHR, where R is hydrogen or a hydrocarbon radical having 1-12 carbon atoms, carried out in a first and a second interconnected polymerization zones, wherein the growing polymer particles flow through the first of said polymerization zones (riser) under fast fluidization conditions, leave said riser and enter the second of said polymerization zones (downcomer) through which they flow downward in a densified form, leave said downcomer and are reintroduced into said riser, in which process: (a) the gas mixture present in the riser is totally or partially prevented from entering the downcomer, and (b) the gaseous composition inside a portion of the downcomer is maintained substantially similar to the gaseous composition reacting in the riser.
    Type: Grant
    Filed: May 9, 2006
    Date of Patent: March 30, 2010
    Assignee: Basel Poliolefine Italia s.r.l.
    Inventors: Gabriele Mei, Joachim T. M. Pater, Gerben Meier, Pietro Baita
  • Patent number: 7678867
    Abstract: A process for preparing a broad molecular weight polyethylene carried out in the presence of a catalyst system comprising (i) a solid catalyst component comprising Mg, Ti, halogen, and optionally an internal electron donor compound, and (ii) an Al-alkyl cocatalyst said process comprising at least two step of polymerization (a) and (b), in which: in a first step (a) ethylene is polymerized in the presence of a molecular weight regulator in order to produce a ethylene (co)polymer, and in a further step (b), which is carried out in the presence of an external electron donor compound added to this polymerization step as a fresh reactant, ethylene is copolymerized with an alpha olefin of formula CH2?CHR, in which R is a C1-C20 hydrocarbon group, to produce an ethylene copolymer having a molecular weight higher than that of the copolymer produced in step (b).
    Type: Grant
    Filed: November 24, 2004
    Date of Patent: March 16, 2010
    Assignee: Basell Polyolefine GmbH
    Inventors: Pietro Baita, Massimo Covezzi, Gabriele Mei, Giampiero Morini, Joachim T. M. Pater
  • Publication number: 20100029869
    Abstract: A catalyst component comprising Ti, Mg, Cl, and optionally ORI groups in which RI is a C1-C20 hydrocarbon group up to an amount such as to give a molar ORI/Ti ratio lower than 0.5, characterized by the following properties: surface area, determined by BET method, of lower than 80 m2/g, a total porosity (PT), measured by the mercury method, in the range of 0.60-1.50 cm3/g a difference (PT?PF) of higher than 0.1 in which PT is the total porosity and PF is the porosity due to pore with radius equal to or less than 1 ?m; an amount of Ti in the catalyst component of less that 10% wt based on the total weight of catalyst component. The said catalyst components show high morphological stability under the low molecular weight ethylene polymerization conditions while at the same time maintaining characteristics of high activity.
    Type: Application
    Filed: December 10, 2007
    Publication date: February 4, 2010
    Applicant: Basell Poliolefine Italia s.r.l.
    Inventors: Giampiero Morini, Tiziano Dall'Occo, Dario Liguori, Joachim T.M. Pater, Gianni Vitale
  • Publication number: 20090306316
    Abstract: A catalyst component comprising Ti, Mg, Al, Cl, and optionally OR1 groups in which R1 is a C1-C20 hydrocarbon group, optionally containing heteroatoms, up to an amount such as to give a molar OR1/Ti ratio lower than 0.5, characterized by the fact that substantially all the titanium atoms are in valence state of 4, that the porosity (PF), measured by the mercury method and due to pores with radius equal to or lower than 1 ?m, is at least 0.3 cm3/g, and by the fact that the Cl/Ti molar ratio is lower than 29. The said catalysts are characterized by high morphological stability under the low molecular weight ethylene polymerization conditions while at the same time maintaining characteristics of high activity.
    Type: Application
    Filed: December 11, 2007
    Publication date: December 10, 2009
    Applicant: Basell Poliolefine Italia s.r.I
    Inventors: Giampiero Morini, Tiziano Dall'Occo, Dario Liguori, Joachim T.M. Pater, Gianni Vitale
  • Patent number: 7524903
    Abstract: 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: Grant
    Filed: December 9, 2005
    Date of Patent: April 28, 2009
    Assignee: Basell Poliolefine Italia s.r.l.
    Inventors: Gabriele Mei, Joachim T. M. Pater, Stefano Bertolini
  • Publication number: 20090036617
    Abstract: A process for the gas-phase polymerization of ?-olefÊns CH2?CHR, where R is hydrogen or a hydrocarbon radical having 1-12 carbon atoms, carried out in a first and a second interconnected polymerization zones, wherein the growing polymer particles flow through the first of said polymerization zones (riser) under fast fluidization conditions, leave said riser and enter the second of said polymerization zones (downcomer) through which they flow downward in a densified form, leave said downcomer and are reintroduced into said riser, in which process: (a) the gas mixture present in the riser is totally or partially prevented from entering the downcomer, and (b) the gaseous composition inside a portion of the downcomer is maintained substantially similar to the gaseous composition reacting in the riser.
    Type: Application
    Filed: May 9, 2006
    Publication date: February 5, 2009
    Applicant: BASELL POLIOLEFINE ITALIA S.R.L.
    Inventors: Gabriele Mei, Joachim T.M. Pater, Gerben Meier, Pietro Baita