Patents by Inventor Pauli Leskinen

Pauli Leskinen 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).

  • POLYPROPYLENE PIPE COMPOSITION
    Publication number: 20210108058
    Abstract: Polypropylene composition having a melting temperature Tm of 135° C. to 140° C. (DSC according to ISO 11357/part 3), —an MFR2 of 0.05 to 0.50 g/10 min (2.16 kg, 230° C., IS01133), a XS according to IS016152 of 0.2 to 2.5 wt.-%, and a molecular weight distribution Mw/Mn of at least 2.8 and less than 6.0, wherein Mn is the number average molecular weight and Mw is the weight average molecular weight both being determined by Gel Permeation Chromatography (GPC) according to ISO 16014-4:2003, and ASTM D 6474-99, whereby the polypropylene composition comprises units derived from 1-hexene in an amount of 1.80 wt.-% to 5.0 wt.-%.
    Type: Application
    Filed: May 7, 2019
    Publication date: April 15, 2021
    Inventors: Pauli Leskinen, Jingbo Wang, Markus Gahleitner, Klaus Bernreitner
  • Process for feeding a polymerisation catalyst
    Patent number: 10946357
    Abstract: The present invention is directed to a process for feeding a polymerisation catalyst into a polymerisation reactor (7), comprising the steps of: (i) maintaining a catalyst slurry comprising a diluent and a solid catalyst component in a catalyst feed vessel (4); (ii) continuously withdrawing a stream of the catalyst slurry from the catalyst feed vessel (4); and (iii) introducing the withdrawn portion of the catalyst slurry into the polymerisation reactor (7), wherein the catalyst slurry is transferred by using a valveless piston pump (5) from the catalyst feed vessel (4) into the polymerisation reactor (7); the diluent has a dynamic viscosity of from 0.01 to 20 mPas at the conditions within the catalyst feed vessel (4), and wherein the catalyst slurry is transferred along a substantially vertical path downwards from the catalyst feed vessel (4) to the reactor (7).
    Type: Grant
    Filed: April 28, 2017
    Date of Patent: March 16, 2021
    Assignee: BOREALIS AG
    Inventors: Pauli Leskinen, Erno Elovainio, Katri Nikkilä, Jukka-Pekka Parjanen, Jani Aho
  • BIMODAL POLYPROPYLENE RANDOM COPOLYMER WITH IMPROVED GAMMA-IRRADIATION RESISTANCE
    Publication number: 20210054181
    Abstract: The present invention relates to bimodal polypropylene random copolymers comprising ethylene as comonomer and articles made thereof, having an improved resistance against ?-irradiation and are especially suitable for application in the medical, pharmaceutical or diagnostic field.
    Type: Application
    Filed: April 9, 2019
    Publication date: February 25, 2021
    Inventors: Jingbo Wang, Markus Gahleitner, Klaus Bernreitner, Pauli Leskinen
  • HETEROPHASIC POLYPROPYLENE COMPOSITION
    Publication number: 20210047502
    Abstract: The invention relates to a new soft heterophasic propylene copolymer with increased melting temperature, improved stiffness and optical properties, as well as the process by which the heterophasic propylene copolymer is produced. Further the present invention is directed to articles made of the inventive heterophasic propylene copolymer, particularly to blow moulded, extrusion blow moulded or injection moulded articles and their use in e.g. medical, pharmaceutical or alimentary applications.
    Type: Application
    Filed: December 18, 2018
    Publication date: February 18, 2021
    Inventors: Markus Gahleitner, Jingbo Wang, Klaus Bernreitner, Pauli Leskinen, Johanna Lilja
  • BIMODAL POLYPROPYLENE RANDOM COPOLYMER
    Publication number: 20210017368
    Abstract: The application provides a bimodal polypropylene random copolymer with good response to nucleating agents, increased crystallization temperature, good mechanical and optical properties, as well as low amounts of extractables and good processability in the sense of high Melt Flow Rate. The present invention further relates to articles made thereof, and the use of the bimodal polypropylene random copolymer for specific applications. It also relates to a process for the preparation of said bimodal polypropylene random copolymer.
    Type: Application
    Filed: April 9, 2019
    Publication date: January 21, 2021
    Inventors: Markus Gahleitner, Jingbo Wang, Klaus Bernreitner, Daniela Mileva, Matthias Hoff, Pauli Leskinen
  • PROCESS FOR PREPARING POLYPROPYLENE COMPOSITION
    Publication number: 20200354554
    Abstract: The invention relates to a process for producing a polypropylene composition by sequential polymerization, said polypropylene composition having low sealing initiation temperature (SIT) and high melting point (Tm), thus providing abroad sealing window.
    Type: Application
    Filed: September 6, 2018
    Publication date: November 12, 2020
    Inventors: Pauli Leskinen, Luca Boragno
  • Process for producing heterophasic copolymers of propylene
    Patent number: 10723870
    Abstract: A process for producing a heterophasic copolymer composition comprising polymerising in multiple steps and multiple polymerisation reactors propylene monomer and a comonomer selected from ethylene, alpha-olefins having 4 to 10 carbon atoms and their mixtures, in the presence of an olefin polymerisation catalyst comprising a solid catalyst component and a co-catalyst, wherein the solid catalyst component comprises titanium, magnesium, halogen and an internal donor of the formula (I): wherein R1 and R2 are the same or different being a linear or branched C1-C12-alkyl group and R is hydrogen or a linear, branched or cyclic C1 to C12-alkyl.
    Type: Grant
    Filed: February 18, 2016
    Date of Patent: July 28, 2020
    Assignee: BOREALIS AG
    Inventors: Pauli Leskinen, Johanna Lilja, Jingbo Wang, Markus Gahleitner
  • PROCESS FOR PRODUCING HETEROPHASIC COPOLYMERS OF PROPYLENE
    Publication number: 20200231795
    Abstract: The present invention provides a process for producing a heterophasic copolymer composition. The polymerisation is conducted in the presence of an olefin polymerisation catalyst comprising a solid catalyst component further comprising titanium, magnesium, halogen and an internal donor, and a cocatalyst, the process comprising the steps of: (1) introducing streams of the solid catalyst component, the cocatalyst, propylene monomer and hydrogen into a first polymerisation reactor; (2) producing a first polymer of propylene in the first polymerisation reactor, the first polymer of propylene having a first melt flow rate MFR2 of from 0.1 to 2.
    Type: Application
    Filed: April 7, 2020
    Publication date: July 23, 2020
    Inventors: Pauli LESKINEN, Johanna LILJA, Jingbo WANG, Markus GAHLEITNER
  • Process for producing polypropylene
    Patent number: 10626199
    Abstract: Propylene is polymerised in the presence of a polymerisation catalyst comprising a solid catalyst component, an organoaluminium compound and an external electron donor, the process comprising the steps of (i) contacting propylene and hydrogen with the polymerisation catalyst in polymerisation conditions in a polymerisation reactor to produce a polymer of propylene; (ii) recovering the polymer of propylene from the polymerisation reactor; wherein the polymer of propylene has MFR of from more than 100 to 10000 g/10 min.
    Type: Grant
    Filed: December 21, 2015
    Date of Patent: April 21, 2020
    Assignee: BOREALIS AG
    Inventors: Pauli Leskinen, Johanna Lilja, Jingbo Wang, Markus Gahleitner, Thomas Horill, Peter Denifl, Cornelia Tranninger
  • Soft polypropylene composition
    Patent number: 10519306
    Abstract: The present invention is directed to a new heterophasic propylene copolymer (RAHECO), a process for obtaining said heterophasic propylene copolymer (RAHECO) and a film or a cable insulation comprising the heterophasic propylene copolymer (RAHECO).
    Type: Grant
    Filed: May 16, 2017
    Date of Patent: December 31, 2019
    Assignee: Borealis AG
    Inventors: Jingbo Wang, Antonios Gitsas, Pauli Leskinen, Johanna Lilja, Martina Sandholzer, Markus Gahleitner
  • PROCESS FOR PREPARING POLYPROPYLENE COMPOSITION
    Publication number: 20190367642
    Abstract: The invention relates to a process for producing a polypropylene composition by sequential polymerization said polypropylene composition having low sealing initiation temperature (SIT) and high melting point (Tm), presenting thus a broad sealing window.
    Type: Application
    Filed: December 27, 2017
    Publication date: December 5, 2019
    Inventors: Pauli Leskinen, Luca Boragno
  • Two-stage process for producing polypropylene compositions
    Patent number: 10494464
    Abstract: A process for polymerizing propylene in the presence of a polymerization catalyst by copolymerizing propylene with a comonomer selected from the group of ethylene and C4-C10 alpha-olefins in two polymerization stages. The first polymerization stage is conducted in a loop reactor and the second polymerization stage in a gas phase reactor. The polymer produced in first polymerization stage has a higher melt flow rate and a lower content of comonomer units than the final polymer mixture. The process can be operated with a high throughput and catalyst productivity.
    Type: Grant
    Filed: April 22, 2014
    Date of Patent: December 3, 2019
    Assignees: BOREALIS AG, ABU DHABI POLYMERS CO. LTD. (BOROUGE) L.L.C.
    Inventors: Kauno Alastalo, Pauli Leskinen, Johanna Lilja, Cristian Hedesiu
  • Polypropylene composition combining low sealing initiation temperature and high melting temperature
    Patent number: 10487203
    Abstract: The invention relates to a polypropylene composition which combines low sealing initiation temperature (SIT) and high melting point (Tm), thus having a broad sealing window.
    Type: Grant
    Filed: December 19, 2017
    Date of Patent: November 26, 2019
    Assignee: Borealis AG
    Inventors: Luca Boragno, Pauli Leskinen, Luigi Resconi, Matthias Hoff, Friedrich Berger
  • PROCESS FOR PRODUCING HETEROPHASIC COPOLYMERS OF PROPYLENE
    Publication number: 20190315953
    Abstract: The present invention provides a process for producing a heterophasic copolymer composition. The polymerisation is conducted in the presence of an olefin polymerisation catalyst comprising a solid catalyst component further comprising titanium, magnesium, halogen and an internal donor, and a cocatalyst, the process comprising the steps of: (1) introducing streams of the solid catalyst component, the cocatalyst, propylene monomer and hydrogen into a first polymerisation reactor; (2) producing a first polymer of propylene in the first polymerisation reactor, the first polymer of propylene having a first melt flow rate MFR 2 of from 0.1 to 2.
    Type: Application
    Filed: February 18, 2016
    Publication date: October 17, 2019
    Inventors: Pauli LESKINEN, Johanna LILJA, Jingbo WANG, Markus GAHLEITNER
  • Soft heterophasic random propylene copolymer with improved clarity
    Patent number: 10442883
    Abstract: The invention is related to a new soft heterophasic random propylene copolymer with improved optical properties, as well as the process by which the heterophasic random propylene copolymer is produced.
    Type: Grant
    Filed: July 4, 2016
    Date of Patent: October 15, 2019
    Assignee: Borealis AG
    Inventors: Jingbo Wang, Katja Klimke, Markus Gahleitner, Pauli Leskinen, Johanna Lilja
  • POLYPROPYLENE COMPOSITION COMBINING LOW SEALING INITIATION TEMPERATURE AND HIGH MELTING TEMPERATURE
    Publication number: 20190309150
    Abstract: The invention relates to a polypropylene composition which combines low sealing initiation temperature (SIT) and high melting point (Tm), thus having a broad sealing window.
    Type: Application
    Filed: December 19, 2017
    Publication date: October 10, 2019
    Inventors: Luca Boragno, Pauli Leskinen, Luigi Resconi, Matthias Hoff, Friedrich Berger
  • A PROCESS FOR FEEDING A POLYMERISATION CATALYST
    Publication number: 20190176118
    Abstract: The present invention is directed to a process for feeding a polymerisation catalyst into a polymerisation reactor (7), comprising the steps of: (i) maintaining a catalyst slurry comprising a diluent and a solid catalyst component in a catalyst feed vessel (4); (ii) continuously withdrawing a stream of the catalyst slurry from the catalyst feed vessel (4); and (iii) introducing the withdrawn portion of the catalyst slurry into the polymerisation reactor (7), wherein the catalyst slurry is transferred by using a valveless piston pump (5) from the catalyst feed vessel (4) into the polymerisation reactor (7); the diluent has a dynamic viscosity of from 0.01 to 20 mPas at the conditions within the catalyst feed vessel (4), and wherein the catalyst slurry is transferred along a substantially vertical path downwards from the catalyst feed vessel (4) to the reactor (7).
    Type: Application
    Filed: April 28, 2017
    Publication date: June 13, 2019
    Inventors: Pauli LESKINEN, Erno ELOVAINIO, Katri NIKKILÄ, Jukka-Pekka PARJANEN, Jani AHO
  • Long-chain branched polypropylene for foam application
    Patent number: 10316177
    Abstract: The invention relates to a propylene homopolymer or copolymer having a comonomer in the copolymer selected from ethylene, C4-C20-alpha olefin, said propylene homopolymer or copolymer being free of phthalic compound. It further relates to a long-chain branched propylene homopolymer or copolymer (b-PP) having a comonomer in the copolymer selected from ethylene, C4-C20-alpha olefins, said long-chain branched propylene homopolymer or copolymer (b-PP) being free of phthalic compound. As well as their production processes and uses.
    Type: Grant
    Filed: November 4, 2015
    Date of Patent: June 11, 2019
    Assignee: BOREALIS AG
    Inventors: Hermann Braun, Jingbo Wang, Markus Gahleitner, Hermann Prokschi, Pauli Leskinen, Johanna Lilja
  • Heterophasic polypropylene with improved stiffness/impact balance
    Patent number: 10308795
    Abstract: Heterophasic polypropylene composition with an advantageous, respectively stiffness/impact balance and its use.
    Type: Grant
    Filed: October 16, 2015
    Date of Patent: June 4, 2019
    Assignee: BOREALIS AG
    Inventors: Jingbo Wang, Pauli Leskinen, Johanna Lilja, Markus Gahleitner
  • SOFT POLYPROPYLENE COMPOSITION
    Publication number: 20190127565
    Abstract: The present invention is directed to a new heterophasic propylene copolymer (RAHECO), a process for obtaining said heterophasic propylene copolymer (RAHECO) and a film or a cable insulation comprising the heterophasic propylene copolymer (RAHECO).
    Type: Application
    Filed: May 16, 2017
    Publication date: May 2, 2019
    Inventors: Jingbo Wang, Antonios Gitsas, Pauli Leskinen, Johanna Lilja, Martina Sandholzer, Markus Gahleitner