Patents Assigned to Basell Polyolefine GmbH
  • Publication number: 20220106418
    Abstract: A process for polymerizing ethylene in a high-pressure polymerization system having a continuously operated polymerization reactor and a reactor blow down system having an emergency valve, a reactor blow down vessel containing an aqueous medium and a reactor blow down dump vessel, wherein the process includes the steps of monitoring the polymerization system for a disturbance, opening the emergency valve when a disturbance occurs to allow the content of the polymerization system to expand into the reactor blow down vessel, contacting the content of the polymerization system in the reactor blow down vessel with the aqueous medium to obtain an aqueous polymer slurry, separating the polymer slurry and gaseous components, and transferring the polymer slurry to the reactor blow down dump vessel.
    Type: Application
    Filed: December 16, 2019
    Publication date: April 7, 2022
    Applicant: Basell Polyolefine GmbH
    Inventors: Dieter Littmann, Andre-Armand Finette, Christoph Wolf, Michael Deuerling, Juergen Mohrbutter, Danir Khayrullin, Giulia Mei, Erich Neumann
  • Patent number: 11236183
    Abstract: A polyethylene composition for producing blow-molded hollow articles, having the following features: 1) a density from 0.945 to 0.958 g/cm3, determined according to ISO 1183 at 23° C.; 2) a ratio MIF/MI10 from 2 to 10; 3) a ?0.02 from 200,000 to 800,000 Pa·s; 4) a LCBI equal to or lower than 0.80; and 5) a ratio (?0.02/1000)/LCBI equal to or greater than 350.
    Type: Grant
    Filed: May 14, 2019
    Date of Patent: February 1, 2022
    Assignee: Basell Polyolefine GmbH
    Inventors: Diana Doetsch, Bernd Lothar Marczinke, Gerhardus Meier, Ulf Schueller, Claudio Fibla
  • Publication number: 20210395490
    Abstract: A polyolefin composition made from or containing (a) a polyolefin and (b) a gibbsite nano platelet treated with a compound of formula (ORa)3Si—Rb or of formula Rc—COOH wherein Ra is a C1-C10 alkyl radical; Rb is a C5-C30 alkyl radical and Rc is a C5-C30 hydrocarbon radical.
    Type: Application
    Filed: October 10, 2019
    Publication date: December 23, 2021
    Applicants: BASELL POLYOLEFINE GMBH, ALBERT-LUDWIGS-UNIVERSITAT FREIBURG
    Inventors: SHAHRAM MIHAN, ROLF MUELHAUPT, FAN ZHONG
  • Publication number: 20210332167
    Abstract: A process for preparation of an ethylene polymer in a gas-phase polymerization unit comprising a gas-phase polymerization reactor by homopolymerizing ethylene or copolymerizing ethylene and one or more C4-C12-1-alkenes in a reaction gas made from or containing propane as polymerization diluent in the presence of a pre-activated polymerization catalyst, wherein a purified propane feed stream made from or containing at least 99 mol % propane and from 0.1 to 100 ppm mol propylene is fed to the gas-phase polymerization unit.
    Type: Application
    Filed: December 16, 2019
    Publication date: October 28, 2021
    Applicant: Basell Polyolefine GmbH
    Inventors: Giuseppe Penzo, Gerhardus Meier, Ulf Schueller, Pietro Baita, Giulia Mei, Elke Damm
  • Patent number: 11155649
    Abstract: A process for the preparation of ethylene homopolymers or copolymers in a facility having a high-pressure tubular reactor and a preheater, wherein a reaction fluid introduced into the reactor at a reactor inlet is heated in the preheater and the average velocity of the reaction fluid in the preheater is lower than the average velocity of the reaction fluid in the tubular reactor and the ratio of the average velocity in the tubular reactor to the average velocity of the reaction fluid in the preheater is in the range from 1.5 to 5.
    Type: Grant
    Filed: August 16, 2018
    Date of Patent: October 26, 2021
    Assignee: Basell Polyolefine GmbH
    Inventors: Christoph Wolf, Dieter Littmann, Michael Deuerling, Andre-Armand Finette, Danir Khayrullin, Juergen Mohrbutter
  • Patent number: 11148316
    Abstract: A method for aligning a cutter plate in a pelletizer for polymer pellets using a remote alignment adjustment device having a mechanical distance measurement probe and a camera for taking photos or videos. The remote alignment adjustment device is attached to the drive shaft of the cutter plate and rotates with the shaft to correct the alignment in different positions of the die plate. Additionally, a process for preparing polyethylene pellets in a pelletizer using the method for aligning the cutter plate.
    Type: Grant
    Filed: August 22, 2018
    Date of Patent: October 19, 2021
    Assignee: Basell Polyolefine GmbH
    Inventors: Arfie Wiradjaja, Guenter Sachs-Weingaertner
  • Patent number: 11104036
    Abstract: A process for continuously preparing a polyolefin composition made from or containing a polyolefin and carbon black in an extruder device. The process includes the steps of supplying polyolefin in form of a polyolefin powder and carbon black to a mixing device; alternatively, (a) measuring the flow rate of the polyolefin powder supplied to the mixing device or (b) measuring the flow rate of the polyolefin pellets prepared in the extruder device; adjusting the flow rate of the carbon black to the mixing device in response to the measured flow rate of the polyolefin powder or adjusting the flow rate of the polyolefin powder to the mixing device in response to the measured flow rate of the polyolefin pellets; melting and homogenizing the mixture within the extruder device; and pelletizing the polyolefin composition into the polyolefin pellets.
    Type: Grant
    Filed: May 28, 2019
    Date of Patent: August 31, 2021
    Assignee: Basell Polyolefine GmbH
    Inventors: Peter Kruempel, Harald Prang, Reinhard Kuehl, Elke Damm
  • Publication number: 20210238320
    Abstract: A polyethylene composition for producing blow-molded hollow articles, having the following features: 1) a density from 0.945 to 0.958 g/cm3, determined according to ISO 1183 at 23° C.; 2) a ratio MIF/MI10 from 2 to 10; 3) a ?0.02 from 200,000 to 800,000 Pa·s; 4) a LCBI equal to or lower than 0.80; and 5) a ratio (?0.02/1000)/LCBI equal to or greater than 350.
    Type: Application
    Filed: May 14, 2019
    Publication date: August 5, 2021
    Applicant: BASELL POLYOLEFINE GMBH
    Inventors: DIANA DOETSCH, BERND LOTHAR MARCZINKE, GERHARDUS MEIER, ULF SCHUELLER, CLAUDIO FIBLA
  • Patent number: 11078307
    Abstract: A gas-phase polymerization reactor for the gas-phase polymerization of olefins including a polymerization zone having a recycle line for (a) withdrawing reaction gas from the reactor, (b) leading the reaction gas through a heat-exchanger for cooling, and (c) feeding the reaction gas back to the reactor, wherein the recycle line has the heat-exchanger, a centrifugal compressor having variable guide vanes, and a butterfly valve, and a related process for preparing an olefin polymer in the gas-phase polymerization reactor.
    Type: Grant
    Filed: February 4, 2019
    Date of Patent: August 3, 2021
    Assignee: Basell Polyolefine GmbH
    Inventors: Pietro Baita, Maurizio Dorini, Giulia Mei, Gerhardus Meier, Giuseppe Penzo, Riccardo Rinaldi
  • Publication number: 20210221923
    Abstract: A nano platelet gibbsite treated with compound of formula (ORa)3Si—R or of formula Rc—COOH wherein Ra equal to or different from each other is a C1-C10 alkyl radical; Rb is a C5-C30 hydrocarbon radical and Rc is a C5-C30 hydrocarbon radical is used as a catalyst support.
    Type: Application
    Filed: October 5, 2018
    Publication date: July 22, 2021
    Applicants: BASELL POLYOLEFINE GMBH, ALBERT-LUDWIGS-UNIVERSITAT FREIBURG
    Inventors: SHAHRAM MIHAN, HEIKE GREGORIUS, VOLKER FRAAIJE, ROLF MULHAUPT, FAN ZHONG
  • Publication number: 20210214472
    Abstract: A gas-phase polymerization reactor for the gas-phase polymerization of olefins including a polymerization zone having a recycle line for (a) withdrawing reaction gas from the reactor, (b) leading the reaction gas through a heat-exchanger for cooling, and (c) feeding the reaction gas back to the reactor, wherein the recycle line has the heat-exchanger, a centrifugal compressor having variable guide vanes, and a butterfly valve, and a related process for preparing an olefin polymer in the gas-phase polymerization reactor.
    Type: Application
    Filed: February 4, 2019
    Publication date: July 15, 2021
    Applicant: Basell Polyolefine GmbH
    Inventors: Pietro Baita, Maurizio Dorini, Giulia Mei, Gerhardus Meier, Giuseppe Penzo, Riccardo Rinaldi
  • Publication number: 20210198387
    Abstract: A process for preparing a multimodal ethylene copolymer in suspension in a reactor cascade including a first polymerization reactor and subsequent polymerization reactor(s) including polymerizing ethylene and C3-C12-1-alkenes and forming a suspension of multimodal ethylene copolymer particles in a suspension medium made from or containing a diluent, transferring the suspension into a separator, wherein the suspension is separated into multimodal ethylene copolymer particles and recovered suspension medium, purifying part of the recovered suspension medium for producing purified components of the recovered suspension medium, and recycling part of the purified components of the recovered suspension medium to the first polymerization reactor of the reactor cascade, wherein the purified components of the recovered suspension medium recycled to the first polymerization reactor and made from or containing the diluent, undergo catalytic hydrogenation before being introduced into the first polymerization reactor.
    Type: Application
    Filed: June 19, 2019
    Publication date: July 1, 2021
    Applicant: Basell Polyolefine GmbH
    Inventors: Elke Damm, Reinhard Kuehl, Rodrigo Carvajal
  • Publication number: 20210148633
    Abstract: Method for the preparation of dried polymer pellets in a facility having a dryer with a first chamber and a mechanical agitator, and the facility further having a degassing silo with a second chamber, the method includes the steps of guiding a drying gas flow made from or containing a first gas mixture for drying wet polymer pellets into the first chamber, transferring the dried polymer pellets into the second chamber, guiding a second gas mixture for degassing the dried polymer pellets into the second chamber thereby transforming the second gas mixture into a third gas mixture and guiding a portion of the third gas mixture into the first chamber; and process for manufacturing LDPE pellets.
    Type: Application
    Filed: June 21, 2018
    Publication date: May 20, 2021
    Applicant: Basell Polyolefine GmbH
    Inventors: Giulia Mei, Juergen Mohrbutter, Dieter Littmann, Christoph Wolf, Andre-Armand Finette, Michael Deuerling, Giuseppe Penzo
  • Publication number: 20210130506
    Abstract: A slurry polymerization process for the preparation of polyethylene in a reactor cascade of two or more polymerization reactors wherein monomers are polymerized in the polymerization reactors which include a reactor outlet arranged in each reactor bottom for feeding a reactor slurry to a subsequent polymerization reactor and for emptying the polymerization reactor.
    Type: Application
    Filed: January 2, 2018
    Publication date: May 6, 2021
    Applicant: Basell Polyolefine GmbH
    Inventors: Peter Rohrbach, Juergen Perzlmeier
  • Publication number: 20210102009
    Abstract: A process for preparing an olefin polymer, including the steps of forming a particulate olefin polymer in a gas-phase polymerization reactor in the presence of a C3-C5 alkane as polymerization diluent, separating discharged polyolefin particles from concomitantly discharged gas at a pressure from 1 to 2.2 MPa, degassing the polyolefin particles at a pressure from 0.1 to 0.4 MPa with a gas made from or containing a C3-C5 alkane; and transferring the separated gas and the gas from the degassing to a work-up unit operated at a pressure from 0.001 to 0.2 MPa below the pressure of the separation, wherein the gas for degassing is continuously received from the work-up unit.
    Type: Application
    Filed: August 2, 2018
    Publication date: April 8, 2021
    Applicant: Basell Polyolefine GmbH
    Inventors: Gabriele Mei, Giulia Mei, Giuseppe Penzo
  • Patent number: 10968291
    Abstract: A process for preparing an ethylene polymer including the step of homopolymerizing ethylene or copolymerizing ethylene with one or more comonomers in a gas-phase polymerization reactor including a riser unit wherein growing polymer particles flow upwards under fluidization, fast fluidization or transport conditions and a downcomer wherein growing polymer particles flow downward in a densified form, wherein the hold-up of polymer particles in the downcomer is from 55 wt. % to 80 wt. % of the total hold-up of polymer particles in the gas-phase polymerization reactor.
    Type: Grant
    Filed: November 9, 2017
    Date of Patent: April 6, 2021
    Assignee: Basell Polyolefine GmbH
    Inventors: Gerhardus Meier, Ulf Schueller, Gabriele Mei, Massimo Covezzi, Pietro Baita, Lorella Marturano
  • Patent number: 10968293
    Abstract: Process for preparing an olefin polymer including the step of polymerizing an olefin in the presence of a polymerization catalyst and hydrogen as molecular weight regulator in a gas-phase polymerization reactor to yield growing polymer particles, the reactor including three or more polymerization zones and at least two thereof are sub-zones of a polymerization unit wherein the growing polymer particles flow downward in a densified form and at least one polymerization zone has a ratio of hydrogen to the sum of olefins which is a factor of at least 1.5 lower than the ratio of hydrogen to the sum of olefins in the polymerization zone having the highest ratio of hydrogen to the sum of olefins and a factor of at least 1.5 higher than the ratio of hydrogen to the sum of olefins in the polymerization zone having the lowest ratio of hydrogen to the sum of olefins.
    Type: Grant
    Filed: November 9, 2017
    Date of Patent: April 6, 2021
    Assignee: Basell Polyolefine GmbH
    Inventors: Gerhardus Meier, Ulf Schueller
  • Patent number: 10920050
    Abstract: A polyethylene composition for producing blow-molded hollow articles, having the following features: 1) density from 0.948 to 0.952 g/cm3 determined according to ISO 1183-1 at 23° C.; 2) ratio MIF/MIP from 12 to 25; 3) MIF from 18 to 40 g/10 min.; 4) Mz equal to or greater than 1,200,000 g/mol; 5) ?0.02 from 35,000 to 55,000 Pa·s; 6) long-chain branching index, LCBI, equal to or greater than 0.55; and 7) ratio (?0.02/1000)/LCBI from 55 to 75.
    Type: Grant
    Filed: October 30, 2017
    Date of Patent: February 16, 2021
    Assignee: Basell Polyolefine GmbH
    Inventors: Diana Doetsch, Bernd Lothar Marczinke, Gerhardus Meier, Ulf Schueller, Elke Damm, Claudio Fibla
  • Patent number: 10899041
    Abstract: A process for continuously preparing a polyolefin composition made from or containing a bimodal or multimodal polyolefin and one or more additives in an extruder device equipped with at least one hopper. The process includes the steps of supplying a bimodal or multimodal polyolefin in form of a polyolefin powder to the hopper; (a) measuring the flow rate of the polyolefin powder or (b) measuring the flow rate of the prepared polyolefin pellets; supplying one or more additives to the hopper; adjusting the flow rates of the additives supplied to the hopper in response to the measured flow rate of the polyolefin powder or adjusting the flow rate of the polyolefin powder in response to the measured flow rate of the polyolefin pellets; melting and homogenizing the polyolefin powder and additives within the extruder device; and pelletizing the molten polyolefin composition into the polyolefin pellets.
    Type: Grant
    Filed: July 10, 2019
    Date of Patent: January 26, 2021
    Assignee: Basell Polyolefine GmbH
    Inventors: Peter Kruempel, Elke Damm, Reinhard Kuehl, Phil Pyman
  • Publication number: 20200369792
    Abstract: A process for the preparation of ethylene homopolymers or copolymers in a facility having a high-pressure tubular reactor and a preheater, wherein a reaction fluid introduced into the reactor at a reactor inlet is heated in the preheater and the average velocity of the reaction fluid in the preheater is lower than the average velocity of the reaction fluid in the tubular reactor and the ratio of the average velocity in the tubular reactor to the average velocity of the reaction fluid in the preheater is in the range from 1.5 to 5.
    Type: Application
    Filed: August 16, 2018
    Publication date: November 26, 2020
    Applicant: Basell Polyolefine GmbH
    Inventors: Christoph Wolf, Dieter Littmann, Michael Deuerling, Andre-Armand Finette, Danir Khayrullin, Juergen Mohrbutter