Patents Assigned to Basell Polyolefine GmbH
  • Polyethylene composition for blow molding having high stress cracking resistance
    Patent number: 9725541
    Abstract: The present technology relates to a polyethylene composition suitable for producing small articles such as flexible and collapsible tubes by blow molding comprising: 1) a density from 0.948 to 0.955 g/cm3; 2) a MIF/MIP ratio from 12 to 25; 3) a MIF from 25 to 40 g/10 min; 4) a Mz from 1000000 to 2000000 g/mol; and 5) a long-chain branching index, LCBI, equal to or greater than 0.55.
    Type: Grant
    Filed: June 19, 2014
    Date of Patent: August 8, 2017
    Assignee: Basell Polyolefine GmbH
    Inventors: Gerhardus Meier, Ulf Schuller, Diana Dotsch, Bernd Lothar Marczinke, Jens Wiesecke
  • LOW DENSITY POLYETHYLENE WITH HIGH ELONGATION HARDENING
    Publication number: 20170218103
    Abstract: The present disclosure provides a low density polyethylene (LDPE) having (A) a density from 0.910 to 0.924 g/cm3, determined according to ISO 1183 at 23° C.; (B) an elongational hardening of at least 4.2, at 150° C. at an elongational rate of 1 s?1; (C) a ratio Mw/Mn of at least 18, where (i) Mw is the weight average molar mass, measured by a MALLS detector coupled to a GPC, and (ii) Mn is the number average molar mass, measured by GPC (Gel Permeation Chromatography); and (D) a Mw of at least 230,000 g/mol. The present disclosure also provides an article of manufacture made from or containing (A) a substrate and (B) a coating layer made from or containing the disclosed LDPE. The present disclosure further provides a polymerization process occurring (A) in the presence of oxygen as the only radical initiating agent and (B) in the absence of solvents.
    Type: Application
    Filed: September 9, 2015
    Publication date: August 3, 2017
    Applicant: Basell Polyolefine GmbH
    Inventors: Sabastian Weiand, Andrei Gonioukh, Stephan Schmitz, Andre-Armand Finette, Guido Bürger, Guido Küpper, Thomas Herrmann, Iakovos Vittorias, Dieter Lilge, Gerd Mannebach
  • PROCESS FOR CONTROLLING AN ETHYLENE POLYMERIZATION PROCESS
    Publication number: 20170210833
    Abstract: A method for controlling a slurry polymerization for the preparation of polyethylene, where the polyethylene is formed in a polymerization reactor comprising a vapor section by contacting a Ziegler-type catalyst, ethylene, and either hydrogen or, as comonomer(s), one or more C3 to C10 alpha-olefins or hydrogen and one or more C3 to C10 alpha-olefins, wherein the ethylene partial pressure is maintained by adjusting the flow rate of the catalyst to the polymerization reactor and the hydrogen/ethylene and comonomer/ethylene partial pressure ratios are maintained by adjusting the flow rates of hydrogen and/or of the one or more comonomers to the polymerization reactor.
    Type: Application
    Filed: June 22, 2015
    Publication date: July 27, 2017
    Applicant: Basell Polyolefine GmbH
    Inventors: Reinhard Kuehl, Rodrigo Carvajal, Gerhardus Meier, Elke Damm, Phil Pyman
  • ETHYLENE POLYMERIZATION PROCESS HAVING IMPROVED HEAT EXCHANGER PERFORMANCE
    Publication number: 20170204206
    Abstract: A process for the preparation of polyethylene by polymerizing in a slurry ethylene and optionally one or more C3 to C10 alpha-olefins in a reactor system comprising a polymerization reactor and one or more first heat exchangers located outside the polymerization reactor where the slurry in the polymerization reactor is cooled by withdrawing slurry from the polymerization reactor, cooling the slurry in the one or more first heat exchangers and returning the cooled slurry to the polymerization reactor, wherein the one or more first heat exchangers are cooled by a first coolant having a temperature of 29° C. or higher.
    Type: Application
    Filed: June 22, 2015
    Publication date: July 20, 2017
    Applicant: Basell Polyolefine GmbH
    Inventors: GIUSEPPE PENZO, Rodrigo CARVAJAL, Reinhard KUEHL, Elke DAMM
  • POLYETHYLENE COMPOSITION FOR INJECTION MOULDING
    Publication number: 20170198069
    Abstract: Polyethylene composition for injection molding with a beneficial balance of environmental stress cracking resistance and impact resistance in combination with low warpage and beneficial processing behavior, said composition having the following features: 1) density of 0.945 g/cm3 or higher; 2) MIE from 1 to 30 g/10 min.; 3) ratio MIF/MIE from 15 to 30; 4) ER values from 0.40 to 0.52.
    Type: Application
    Filed: June 17, 2015
    Publication date: July 13, 2017
    Applicant: Basell Polyolefine GmbH
    Inventors: Gerhardus Meier, Ulf Schüller, Harilaos Mavridis, Bernd Lothar Marczinke, Diana Dötsch, Jens Wiesecke
  • Substituted zirconocenes catalysts and methods of use in polymerization reactions
    Patent number: 9701771
    Abstract: The present disclosure relates to metallocene catalysts for use in polymerization processes. Such catalysis may be used to generate long chain polymers with low long chain branching and high molecular weights. Additionally, the size of the polymers produced can be controlled by modifying the ratio of MAO or other activator to metallocene catalyst.
    Type: Grant
    Filed: April 2, 2015
    Date of Patent: July 11, 2017
    Assignee: Basell Polyolefine GmbH
    Inventors: Sandor Nagy, Shahram Mihan, Linda N. Winslow, Ilya E. Nifant'ev, Pavel V. Ivchenko, Vladimir V. Bagrov, Igor A. Kashulin
  • Method for cooling a gas-phase reactor for the polymerization of olefins
    Patent number: 9694336
    Abstract: A method for controlling the temperature in a polymerization reactor equipped with a cycle gas line for withdrawing reactor gas from the reactor, leading the reactor gas through a heat-exchanger, which is cooled by a cooling medium, which is conveyed in a cooling system through the heat-exchanger, and feeding the reactor gas back to the reactor by adjusting the temperature of the cooling medium entering the heat exchanger, wherein the temperature of the cooling medium entering the heat exchanger is controlled by adjusting the flow rate of the cooling medium in a part of the cooling system by a flow control system comprising two continuously operating flow control devices of different size, which are connected in parallel, a process for polymerizing olefins and a process for controlling the flow rate of a fluid medium.
    Type: Grant
    Filed: June 13, 2013
    Date of Patent: July 4, 2017
    Assignee: Basell Polyolefine GmbH
    Inventors: Holger Strecker, Manfred Hecker, Rainer Karer, Axel Hamann, Paulus-Petrus Maria De Lange
  • ETHYLENE POLYMER COMPOSITION HAVING IMPROVED TENSILE PROPERTIES
    Publication number: 20170183486
    Abstract: The present disclosure relates to an ethylene polymer composition having an eta (0.01) equal to or higher than 35,000 Pa·s, comprising: A) 25-75% by weight of an ethylene polymer selected from ethylene homopolymers, copolymers of ethylene with 10% or less of one or more olefin comonomers, and mixtures of the homopolymers and copolymers; B) 25-75% by weight of a copolymer of ethylene and propylene comprising 45-70% by weight of ethylene; wherein eta (0.01) is the complex shear viscosity at an angular frequency of 0.01 rad/s, measured with dynamic oscillatory shear in a plate-plate rotational rheometer at a temperature of 200° C., and the amounts of A) and B) refer to the total weight of A)+B).
    Type: Application
    Filed: June 17, 2015
    Publication date: June 29, 2017
    Applicant: BASELL POLYOLEFINE GMBH
    Inventors: CLAUDIO CAVALIERI, MICHELE GRAZZI, ROBERTO PANTALEONI
  • METHODS FOR CONTROLLING ALUMINUM ALKYL FEED TO A SLURRY POLYMERIZATION PROCESS
    Publication number: 20170183427
    Abstract: The present disclosure generally relates to a slurry polymerization process for the preparation of polyethylene in the presence of a Ziegler catalyst and aluminum alkyl co-catalyst in at least one polymerization reactor, in which process suspension medium comprising a concentration of aluminum alkyl co-catalyst is recycled to the polymerization, the concentration of aluminum alkyl co-catalyst in the recycled suspension medium is determined; and the amount of fresh aluminum alkyl co-catalyst fed to the polymerization is adjusted to maintain a targeted aluminum alkyl co-catalyst concentration in the recycled suspension medium.
    Type: Application
    Filed: April 28, 2015
    Publication date: June 29, 2017
    Applicant: Basell Polyolefine GmbH
    Inventors: Reinhard Kuehl, Rodrigo Carvajal, Gerhardus Meier, Elke Damm, Phil Pyman
  • HIGH-PRESSURE POLYMERIZATION PROCESS OF ETHYLENICALLY UNSATURATED MONOMERS IN A TUBULAR REACTOR
    Publication number: 20170183429
    Abstract: The present technology relates to a process for polymerizing or copolymerizing ethylenically unsaturated monomers in the presence of free-radical polymerization initiators, wherein the polymerization is carried out in a continuously operated tubular reactor at temperatures from 100° C. to 350° C. and pressures from 180 MPa to 340 MPa, with a specific reactor surface area Asp of 2 m2/(t/h) to 5.5 m2/(t/h), and the tubular reactor has a specific ratio RDsp of 0.0050 MPa?1 to 0.0069 MPa?1 and an inner surface which has a surface roughness Ra of 2 ?m or less.
    Type: Application
    Filed: March 16, 2017
    Publication date: June 29, 2017
    Applicant: Basell Polyolefine GmbH
    Inventors: Dieter Littmann, Jürgen Peter Mohrbutter, Giulia Mei, Andre-Armand Finette, Sven Georg Wolfram, Michael Deuerling, Danir Khayrullin, Georg Groos, Christoph Wolf
  • Polyethylene of raised temperature resistance
    Patent number: 9671047
    Abstract: The present disclosure relates to a polyethylene composition of Raised Temperature Resistance, having the following features: 1) a density from 0.935 to 0.945 g/cm3; 2) a melt flow index MIF from 10 to 18 g/10 min; 3) a melt flow index MIP from 1 to 2.5 g/10 min; and 4) a MIF/MIP ratio from 5 to 10.
    Type: Grant
    Filed: September 24, 2014
    Date of Patent: June 6, 2017
    Assignee: Basell Polyolefine GmbH
    Inventors: Heinz Vogt, Shahram Mihan, Gerd Mannebach, Lenka Richter-Lukesova, Markus Meierhöfer, Holger Brüning
  • Process for ethylene polymerization with improved slurry pump performance
    Patent number: 9650454
    Abstract: A slurry polymerization process comprising polymerizing monomers in a reactor comprising baffles, a first slurry feed line for returning cooled slurry from a cooler and optionally a second slurry feed line for transferring reactor slurry from a previous reactor of a cascade of polymerization reactors, wherein the baffle top, the first slurry feed line discharge end and the second slurry feed line end are located below the reactor liquid level.
    Type: Grant
    Filed: May 13, 2015
    Date of Patent: May 16, 2017
    Assignee: Basell Polyolefine GmbH
    Inventors: Harald Prang, Suresh Babu Vatti, Peter Rohrbach, Mudit Ashtana
  • POLYETHYLENE PROCESSES FOR PRODUCING COMPOSITIONS HAVING HIGH SWELL RATIO
    Publication number: 20170121512
    Abstract: The present disclosure relates to a polyethylene composition with improved swell ratio and mechanical properties for use in preparing blow-moulded articles and having the following features: 1) a density from 0.945 to less than 0.952 g/cm3; 2) an MIF/MIP ratio from 15 to 30; 3) a Shear-Induced Crystallization Index (SIC) from 2.5 to 5.5.
    Type: Application
    Filed: January 17, 2017
    Publication date: May 4, 2017
    Applicant: Basell Polyolefine GmbH
    Inventors: Iakovos Vittorias, Jens Wiesecke, Bernd Lothar Marczinke, Gerhardus Meier, Ulf Schüller, Volker Dolle, Johannes-Friedrich Enderle, Dieter Lilge, Barbara Gall
  • Process for separating components of a reaction mixture obtained by high-pressure polymerization of ethylenically unsaturated monomers with improved level control
    Patent number: 9637568
    Abstract: The present disclosure generally relates to a process for separating polymeric and gaseous components of a reaction mixture obtained by high-pressure polymerization of ethylenically unsaturated monomers in the presence of free-radical polymerization initiators into a gaseous fraction and a liquid fraction in a separation vessel, wherein the filling level of the liquid fraction in the separation vessel is measured by a radiometric level measurement system comprising at least two radioactive sources and at least three radiation detectors, and the filling level is controlled by a product discharge valve which operates based on data coming from the level measurement system.
    Type: Grant
    Filed: December 3, 2014
    Date of Patent: May 2, 2017
    Assignee: Basell Polyolefine GmbH
    Inventors: Danir Khayrullin, Michael Deuerling, Christoph Wolf, Erich Neumann, Claudio Fibla
  • Vessel for separating components of a reaction mixture obtained by high-pressure polymerization of ethylenically unsaturated monomers with integrated bursting discs
    Patent number: 9637569
    Abstract: The present disclosure relates to a vessel for separating, at a pressure of from 10 MPa to 50 MPa, a composition comprising liquid components and gaseous components into a liquid fraction and a gaseous fraction, wherein the separation vessel has a vertically arranged cylindrical shape, has at its top a manhole, which is surrounded by a thickened by a part of the separation vessel wall; and bears at least one bursting disc which is held by a bursting disc holder which is installed pressure-tight within a boring in the thickened part of the separation vessel wall.
    Type: Grant
    Filed: December 15, 2014
    Date of Patent: May 2, 2017
    Assignee: Basell Polyolefine GmbH
    Inventors: Erich Neumann, Danir Khayrullin, Claudio Fibla
  • High-pressure polymerization process of ethylenically unsaturated monomers in a tubular reactor
    Patent number: 9631037
    Abstract: The present technology relates to a process for polymerizing or copolymerizing ethylenically unsaturated monomers in the presence of free-radical polymerization initiators, wherein the polymerization is carried out in a continuously operated tubular reactor at temperatures from 100° C. to 350° C. and pressures from 180 MPa to 340 MPa, with a specific reactor surface area Asp of 2 m2/(t/h) to 5.5 m2/(t/h), and the tubular reactor has a specific ratio RDsp of 0.0050 MPa?1 to 0.0069 MPa?1 and an inner surface which has a surface roughness Ra of 2 ?m or less.
    Type: Grant
    Filed: August 18, 2016
    Date of Patent: April 25, 2017
    Assignee: Basell Polyolefine GmbH
    Inventors: Dieter Littmann, Jurgen Peter Mohrbutter, Giulia Mei, Andre-Armand Finette, Sven Georg Wolfram, Michael Deuerling, Danir Khayrullin, Georg Groos, Christoph Wolf
  • Process for separating components of a reaction mixture obtained by high-pressure polymerization of ethylenically unsaturated monomers
    Patent number: 9631035
    Abstract: The present disclosure relates to a process for separating polymeric and gaseous components of a reaction mixture obtained by high-pressure polymerization of ethylenically unsaturated monomers in the presence of free-radical polymerization initiators into in a gaseous fraction and a liquid fraction, wherein the separation is carried out at a pressure of from 15 MPa to 50 MPa and a temperature of from 120° C. to 300° C. in a separation vessel which has a vertically arranged cylindrical shape with a ratio of length to diameter L/D of from 4 to 10 and which is equipped with an inlet pipe which extends vertically from the top into the separation vessel; and the ratio of the inner diameter of the inlet pipe at its lower end and the inner diameter of the separating vessel in its cylindrical part is in the range of from 0.2 to 0.4.
    Type: Grant
    Filed: December 3, 2014
    Date of Patent: April 25, 2017
    Assignee: Basell Polyolefine GmbH
    Inventors: Georg Groos, Erich Neumann, Michael Deuerling, Dieter Littmann
  • Polyethylene fiber or filament
    Patent number: 9605360
    Abstract: A polymer filament or fiber comprising a polyethylene material (I) having the following features: a) a density of 0.900 g/cm3 or higher; b) a MI21 value of 25 g/10 min.; c) a MFR value from 25 to 60; the said fiber being stretched by drawing with a draw ratio from 1.5 to 10.
    Type: Grant
    Filed: April 21, 2011
    Date of Patent: March 28, 2017
    Assignee: Basell Polyolefine GmbH
    Inventors: Gianni Perdomi, Fabiana Fantinel, Roberto Vanzini, Shahram Mihan, Roberto De Palo
  • PROCESS FOR ETHYLENE POLYMERIZATION WITH IMPROVED SLURRY PUMP PERFORMANCE
    Publication number: 20170073440
    Abstract: A slurry polymerization process comprising polymerizing monomers in a reactor comprising baffles, a first slurry feed line for returning cooled slurry from a cooler and optionally a second slurry feed line for transferring reactor slurry from a previous reactor of a cascade of polymerization reactors, wherein the baffle top, the first slurry feed line discharge end and the second slurry feed line end are located below the reactor liquid level.
    Type: Application
    Filed: May 13, 2015
    Publication date: March 16, 2017
    Applicant: Basell Polyolefine GmbH
    Inventors: Harald PRANG, Suresh Babu VATTI, Peter ROHRBACH, Mudit ASHTANA
  • Polyethylene for injection molding
    Patent number: 9580584
    Abstract: The present disclosure relates to a polyethylene composition comprising copolymers of ethylene with 1-alkenes, or mixtures of ethylene homopolymers and said copolymers of ethylene with 1-alkenes, wherein the polyethylene composition has a molar mass distribution width (MWD) Mw/Mn of from 7 to 15, a density of from 0.942 to 0.954 g/cm3, a weight average molar mass Mw of from 20,000 g/mol to 500,000 g/mol, a MIE of from 1.0 to 3.0 g/10 min, a MIF of from 100 to 200 g/10 min, and a ratio MIF/MIE of from 40 to 50.
    Type: Grant
    Filed: September 24, 2014
    Date of Patent: February 28, 2017
    Assignee: Basell Polyolefine GmbH
    Inventors: Bernd Hoecker, Thomas Lindner, Peter Bisson, Gerd Mannebach