Patents by Inventor Shahram Mihan

Shahram Mihan 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: 20210070958
    Abstract: A method of depolymerizing plastics using a halloysite catalyst is described herein. The method reduces the energy required for the depolymerization process while achieving improved depolymerization results.
    Type: Application
    Filed: September 9, 2020
    Publication date: March 11, 2021
    Applicant: Basell Poliolefine Italia S.r.l.
    Inventors: Diego Brita, Sheri E. Davis, Volker Fraaije, Simona Guidotti, Dario Liguori, Sandor Nagy, David L. Ramage, Shahram Mihan, Christopher D. Smith, Daniel F. White, Xueyong Yang
  • Publication number: 20210061972
    Abstract: A method of depolymerizing plastics using a fluorinated alumina catalyst is described herein. The method reduces the energy required for the depolymerization process while achieving improved depolymerization results.
    Type: Application
    Filed: August 25, 2020
    Publication date: March 4, 2021
    Applicant: Basell Poliolefine Italia S.r.l.
    Inventors: Sandor Nagy, Christopher D. Smith, Xueyong Yang, Daniel F. White, Sheri E. Davis, Shahram Mihan, Volker Fraaije
  • Patent number: 10358509
    Abstract: The present disclosure relates to a continuous process for the preparation of ethylene homopolymers or ethylene copolymers comprising polymerizing ethylene or copolymerizing ethylene and one or more other olefins in the presence of a chromium catalyst in a gas-phase polymerization reactor which is equipped with a cycle gas line for withdrawing reactor gas from the reactor, leading the reactor gas through a heat-exchanger for cooling and feeding the reactor gas back to the reactor, wherein the polymerization is carried out at a temperature from 30° C. to 130° C. and a pressure of from 0.1 to 10 MPa and an aliphatic carboxylic acid ester having from 8 to 24 carbon atoms is added.
    Type: Grant
    Filed: March 23, 2016
    Date of Patent: July 23, 2019
    Assignee: Basell Polyolefine GmbH
    Inventors: Volker Fraaije, Michael Lynch, Shahram Mihan, Gerhardus Meier, Ulf Schueller
  • Publication number: 20190055328
    Abstract: A process for the preparation of an ethylene polymer including the step of polymerizing ethylene or copolymerizing ethylene and one or more other olefins in the presence of a Phillips-type chromium catalyst in a gas-phase polymerization reactor containing a reactor bed of particulate polymer, wherein the gas-phase polymerization reactor is equipped with a cycle gas line, wherein the reactor gas returned to the polymerization reactor through the cycle gas line has been condensed in part and the amount of liquid in the returned reactor gas is from 0.5 wt. % to 10 wt. % based upon the total weight of the reactor gas/liquid composition, the polymerization is carried out at from 108° C. to 125° C., and an aluminum alkyl is fed into the polymerization reactor in an amount in the range of from 0.0025 mole to 0.1 mole per ton of dosed ethylene.
    Type: Application
    Filed: February 23, 2017
    Publication date: February 21, 2019
    Applicant: Basell Polyolefine GmbH
    Inventors: Gerhardus Meier, Ulf Schueller, Claudio Fibla, Shahram Mihan
  • Patent number: 10208144
    Abstract: A process for the preparation of polyolefins by polymerizing olefins at temperatures of from 20 to 200° C. and pressures of from 0.1 to 20 MPa in the presence of a polymerization catalyst and an antistatically acting composition in a polymerization reactor, wherein the antistatically acting composition is a mixture comprising an oil-soluble surfactant and water and the use of an antistatically acting composition comprising an oil-soluble surfactant and water as antistatic agent for the polymerization of olefins at temperatures of from 20 to 200° C. and pressures of from 0.1 to 20 MPa in the presence of a polymerization catalyst.
    Type: Grant
    Filed: August 15, 2017
    Date of Patent: February 19, 2019
    Assignee: Basell Polyolefine GmbH
    Inventors: Shahram Mihan, Gerhardus Meier, Ulf Schueller, Michael Schiendorfer, Jens Wiesecke
  • Patent number: 10202472
    Abstract: A process for the preparation of an ethylene polymer including the step of polymerizing ethylene or copolymerizing ethylene and one or more other olefins in the presence of a Phillips-type chromium catalyst in a gas-phase polymerization reactor containing a reactor bed of particulate polymer, wherein the gas-phase polymerization reactor is equipped with a cycle gas line, wherein the reactor gas returned to the polymerization reactor through the cycle gas line has been condensed in part and the amount of liquid in the returned reactor gas is from 0.5 wt. % to 10 wt. % based upon the total weight of the reactor gas/liquid composition, the polymerization is carried out at from 108° C. to 125° C., and an aluminum alkyl is fed into the polymerization reactor in an amount in the range of from 0.0025 mole to 0.1 mole per ton of dosed ethylene.
    Type: Grant
    Filed: February 23, 2017
    Date of Patent: February 12, 2019
    Assignee: Basell Polyolefine GmbH
    Inventors: Gerhardus Meier, Ulf Schueller, Claudio Fibla, Shahram Mihan
  • Patent number: 9932465
    Abstract: A process for preparing a polyolefin, including polymerizing olefins in the presence of an antistatic agent made from or containing an alkylene oxide derived polymer made from or containing in average from about 10 to about 200 repeating units —(CH2—CHR—O)— with R being hydrogen or an alkyl group having from 1 to 6 carbon atoms, wherein the alkylene oxide derived polymer is a random copolymer of ethylene oxide and other alkylene oxides and a ratio of n:m is in the range of from 6:1 to 1:1, wherein (n) is the average number of repeating units —(CH2—CH2—O)— derived from ethylene oxide and (m) is the average number of repeating units —(CH2—CHR?—O)— derived from the other alkylene oxides with R? being an alkyl group having from 1 to 6 carbon atoms, and the end groups of the alkylene oxide derived polymer are —OH groups.
    Type: Grant
    Filed: March 23, 2016
    Date of Patent: April 3, 2018
    Assignee: Basell Polyolefine GmbH
    Inventors: Gerd Mannebach, Bernd Lothar Marczinke, Gerhardus Meier, Ulf Schueller, Shahram Mihan, Andreas Maus, Pietro Baita, Maria Di Diego, Lorella Marturano
  • Publication number: 20180079842
    Abstract: The present disclosure relates to a continuous process for the preparation of ethylene homopolymers or ethylene copolymers comprising polymerizing ethylene or copolymerizing ethylene and one or more other olefins in the presence of a chromium catalyst in a gas-phase polymerization reactor which is equipped with a cycle gas line for withdrawing reactor gas from the reactor, leading the reactor gas through a heat-exchanger for cooling and feeding the reactor gas back to the reactor, wherein the polymerization is carried out at a temperature from 30° C. to 130° C. and a pressure of from 0.1 to 10 MPa and an aliphatic carboxylic acid ester having from 8 to 24 carbon atoms is added.
    Type: Application
    Filed: March 23, 2016
    Publication date: March 22, 2018
    Applicant: Basell Polyolefine GmbH
    Inventors: Volker Fraaije, Michael Lynch, Shahram Mihan, Gerhardus Meier, Ulf Schueller
  • Publication number: 20180072876
    Abstract: A process for preparing a polyolefin, including polymerizing olefins in the presence of an antistatic agent made from or containing an alkylene oxide derived polymer made from or containing in average from about 10 to about 200 repeating units —(CH2—CHR—O)— with R being hydrogen or an alkyl group having from 1 to 6 carbon atoms, wherein the alkylene oxide derived polymer is a random copolymer of ethylene oxide and other alkylene oxides and a ratio of n:m is in the range of from 6:1 to 1:1, wherein (n) is the average number of repeating units —(CH2—CH2—O)— derived from ethylene oxide and (m) is the average number of repeating units —(CH2—CHR?—O)— derived from the other alkylene oxides with R? being an alkyl group having from 1 to 6 carbon atoms, and the end groups of the alkylene oxide derived polymer are —OH groups.
    Type: Application
    Filed: March 23, 2016
    Publication date: March 15, 2018
    Applicant: Basell Polyolefine GmbH
    Inventors: Gerd Mannebach, Bernd Lothar Marczinke, Gerhardus Meier, Ulf Schueller, Shahram Mihan, Andreas Maus, Pietro Baita, Maria Di Diego, Lorella Marturano
  • Publication number: 20180009916
    Abstract: A process for the preparation of polyolefins by polymerizing olefins at temperatures of from 20 to 200° C. and pressures of from 0.1 to 20 MPa in the presence of a polymerization catalyst and an antistatically acting composition in a polymerization reactor, wherein the antistatically acting composition is a mixture comprising an oil-soluble surfactant and water and the use of an antistatically acting composition comprising an oil-soluble surfactant and water as antistatic agent for the polymerization of olefins at temperatures of from 20 to 200° C. and pressures of from 0.1 to 20 MPa in the presence of a polymerization catalyst.
    Type: Application
    Filed: August 15, 2017
    Publication date: January 11, 2018
    Applicant: Basell Polyolefine GmbH
    Inventors: Shahram Mihan, Gerhardus Meier, Ulf Schueller, Michael Schiendorfer, Jens Wiesecke
  • Patent number: 9771439
    Abstract: A process for the preparation of polyolefins by polymerizing olefins at temperatures of from 20 to 200° C. and pressures of from 0.1 to 20 MPa in the presence of a polymerization catalyst and an antistatically acting composition in a polymerization reactor, wherein the antistatically acting composition is a mixture comprising an oil-soluble surfactant and water and the use of an antistatically acting composition comprising an oil-soluble surfactant and water as antistatic agent for the polymerization of olefins at temperatures of from 20 to 200° C. and pressures of from 0.1 to 20 MPa in the presence of a polymerization catalyst.
    Type: Grant
    Filed: June 10, 2014
    Date of Patent: September 26, 2017
    Assignee: Basell Polyolefine GmbH
    Inventors: Shahram Mihan, Gerhardus Meier, Ulf Schueller, Michael Schiendorfer, Jens Wiesecke
  • Patent number: 9738778
    Abstract: A two steps polymerization process for obtaining a polyolefin composition comprising: a) from 25 wt % to 70 wt % of a propylene homopolymer or a propylene-ethylene copolymer containing from 0.1 wt % to 10 wt % of ethylene derived units; b) from 27 wt % to 70 wt % of a copolymer of ethylene and at least one C3-C20 alpha olefins, wherein the ethylene derived units content ranges from 15 wt % to 70 wt %; c) from 3 wt % to 20 wt % of polyethylene homopolymer or an ethylene and at least one C3-C20 alpha olefins copolymer; the sum a)+b)+c) being 100, wherein said process comprises: step a) contacting under polymerization conditions propylene, optionally ethylene and the catalyst system in order to obtain component a), step b) contacting under polymerization conditions ethylene and at least one C3-C20 alpha-olefins and the catalyst system in order to obtain components b) and c); wherein the catalyst system comprises a metallocene compound and an iron complex.
    Type: Grant
    Filed: June 19, 2013
    Date of Patent: August 22, 2017
    Assignee: Basell Polyolefine GmbH
    Inventors: Fabiana Fantinel, Bodo Richter, Shahram Mihan, Massimo Covezzi, Claudio Cavalieri, Michele Grazzi
  • 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
  • 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
  • Patent number: 9650505
    Abstract: Polyolefin compositions suitable for injection molded items e.g. for impact bumpers and car interiors comprising from 30% to 90% by weight of an heterophasic propylene polymer composition (A); and from 10% to 70% by weight of a multimodal ethylene/butene-1 copolymer (B); having density from 0.850 to 0.935 g/cm3, total comonomer content from 6% to 30% by weight, Mw/Mn from 4 to 20; intrinsic viscosity in decalin at 135° C. from 1.0 to 4.0 dL/g, and comprising an HDPE fraction (HDPE % wt) up to 30% wt; further comprising from 0 to 50% by weight of a filler (C) and optionally, in amount up to 10% by weight with respect to the overall composition, an impact modifier masterbatch component D consisting of an ultra-soft heterophasic copolymer component.
    Type: Grant
    Filed: October 30, 2012
    Date of Patent: May 16, 2017
    Assignee: Basell Poliolefine Italia S.r.l.
    Inventors: Fabiana Fantinel, Sander Willems, Michele Grazzi, Giampaolo Pellegatti, Jurgen Rohrmann, Shahram Mihan
  • 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
  • Publication number: 20160298795
    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: Application
    Filed: September 24, 2014
    Publication date: October 13, 2016
    Applicant: Basell Polyolefine GmbH
    Inventors: Heinz Vogt, Shahram Mihan, Gerd Mannebach, Lenka Richter-Lukesova, Markus Meierhõfer, Holger Brüning
  • Patent number: 9464147
    Abstract: The instant invention pertains to a process for preparing an ethylene homo- or copolymer in the presence of a supported chromium catalyst by slurry loop polymerization or copolymerization, whereby the resulting polymer powder has an increased powder density, in which the supported chromium catalyst has a chromium content of from 0.01 to 5 wt.-%, based on the element in the finished catalyst, and shows a particle size distribution measured according to ISO 13320-2009 comprising two main fractions one of which having a d50 of from 15 to 40 ?m and the other having a d50 of from 45 to 80 ?m said catalyst being further characterized by the fact that less than 10% wt of its catalyst particles has diameter lower than 20 ?m.
    Type: Grant
    Filed: December 4, 2012
    Date of Patent: October 11, 2016
    Assignee: Basell Polyolefine GmbH
    Inventors: Lars Kolling, Shahram Mihan
  • Patent number: 9458271
    Abstract: A catalyst system obtainable by contacting: A) a metal complex of formula (I) B) an iron complex of the general formula (II) C) an alumoxane or a compound capable of forming an alkyl cation with complexes of formula (I) and (II); Wherein the variables are described in the description.
    Type: Grant
    Filed: November 25, 2013
    Date of Patent: October 4, 2016
    Assignee: Basell Poliolefine Italia S.r.l.
    Inventors: Lenka Richter-Lukesova, Shahram Mihan, Sandor Nagy
  • Patent number: 9422380
    Abstract: The present disclosure relates to metallocene catalyst and the use thereof to make polyolefins. In particular, the present disclosure relates to silyl-functionalized metallocene catalyst and the use of the silyl-functionalized metallocene catalyst to polymerize olefins and yield a polyolefin. Also, the present disclosure relates to a method for producing a polyolefin comprising at least the step of contacting an olefin with a metallocene catalyst to produce a polyolefin. In particular, the present disclosure provides a method for producing a polyolefin comprising the step of contacting an olefin with a silyl-functionalized metallocene catalyst.
    Type: Grant
    Filed: April 2, 2015
    Date of Patent: August 23, 2016
    Assignee: Basell Polyolefine Wesseling
    Inventors: Sandor Nagy, Shahram Mihan, Ilya E. Nifant'ev, Pavel V. Ivchenko, Vladimir V. Bagrov, Igor A. Kashulin