Patents by Inventor Mika Haerkoenen

Mika Haerkoenen 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).

  • Patent number: 9657147
    Abstract: The present invention relates to a method for preparation a glycolide polyester by ring opening polymerization characterized in that glycolide monomer with optional co-monomer(s) of cyclic ester(s) is/are subjected to ring opening polymerization in the presence of a dispersion stabilizer and a catalyst, said catalyst being selected for precipitating glycolide homopolymer or copolymer from solvent, said solvent being selected so that the glycolide monomer and the optional co-monomer(s), the dispersion stabilizer and the catalyst are soluble therein but said glycolide homopolymer or copolymer is non-soluble. The present invention further relates to an in situ ring opening polymerizing process product, and to use of said glycolide polyester, and to further processing of said glycolide polyester.
    Type: Grant
    Filed: May 23, 2012
    Date of Patent: May 23, 2017
    Assignee: TEKNOLOGIAN TUTKIMUSKESKUS VTT OY
    Inventors: Jun Shan, Mika Härkönen, Jarmo Ropponen, Ali Harlin, Harri Heikkinen, Virpi Rämö, Thomas Gädda, Leena Nurmi, Pia Willberg-Keyriläinen
  • Publication number: 20140309366
    Abstract: The present invention relates to a method for preparation a glycolide polyester by ring opening polymerization characterized in that glycolide monomer with optional co-monomer(s) of cyclic ester(s) is/are subjected to ring opening polymerization in the presence of a dispersion stabilizer and a catalyst, said catalyst being selected for precipitating glycolide homopolymer or copolymer from solvent, said solvent being selected so that the glycolide monomer and the optional co-monomer(s), the dispersion stabilizer and the catalyst are soluble therein but said glycolide homopolymer or copolymer is non-soluble. The present invention further relates to an in situ ring opening polymerizing process product, and to use of said glycolide polyester, and to further processing of said glycolide polyester.
    Type: Application
    Filed: May 23, 2012
    Publication date: October 16, 2014
    Applicant: TEKNOLOGIAN TUTKIMUSKESKUS VTT
    Inventors: Jun SHAN, Mika HÄRKÖNEN, Jarmo ROPPONEN, Ali HARLIN, Harri HEIKKINEN, Virpi RÄMÖ, Thomas GÄDDA, Leena NURMI, Pia WILLBERG-KEYRILÄINEN
  • Patent number: 7182987
    Abstract: The invention provides a syringe barrel formed by injection moulding of a polypropylene composition, characterised in that said polypropylene composition contains a polyethylene wax. The invention further provides a syringe having a barrel formed by injection moulding of a polypropylene composition, characterised in that said polypropylene composition contains a polyethylene wax and a polypropylene composition suitable for such moulding.
    Type: Grant
    Filed: August 15, 2001
    Date of Patent: February 27, 2007
    Assignee: Borealis Technology Oy
    Inventors: Dirk Matthijs, Svein Jamtvedt, Mika Härkönen, Harry Øysaed
  • Patent number: 6930149
    Abstract: The invention relates to polyolefin compositions with good impact strength and transparency comprising a) 85-98 wt % based on the total weight of the composition of a heterophasic propylene/?-olefin copolymer comprising a polymer or copolymer of propylene and an ?-olefin with 0-15 mol % of the ?-olefin as matrix polymer and a propylene/?-olefin rubber copolymer comprising 20-80 mol % of the ?-olefin and b) 15-2 wt % based on the total weight of the composition of an ethylene homopolymer or an ethylene/?-olefin copolymer, the ?-olefin in the ethylene copolymer having 4-10 carbon atoms, the ethylene homo- or copolymer having a density lower than 0.925 g/m3. processes for producing these compositions and their use. The compositions are particularly useful for food packaging, especially for deep freezing applications.
    Type: Grant
    Filed: November 26, 2001
    Date of Patent: August 16, 2005
    Assignee: Borealis GmbH
    Inventors: Mika Haerkoenen, Johannes Wolfschwenger
  • Publication number: 20040210002
    Abstract: The invention relates to polyolefin compositions with good impact strength and transparency comprising
    Type: Application
    Filed: August 28, 2003
    Publication date: October 21, 2004
    Inventors: Mika Haerkoenen, Johannes Wolfschwenger
  • Patent number: 6437063
    Abstract: The present invention concerns a process for producing a propylene polymer nucleated with a polymeric nucleating agent containing vinyl compound units. The method comprises modifying a catalyst by polymerizing a vinyl compound in the presence of said catalyst in a medium, which does not essentially dissolve the polymerized vinyl compound, and by continuing the polymerization of the vinyl compound until the concentration of unreacted vinyl compounds is less than about 0.5 wt-%. The thus obtained modified catalyst composition is used for polymerizing propylene optionally together with comonomers to produce in the presence of said modified catalyst composition. Modification of the catalyst according to the present invention will reduce production costs and provide highly reliable catalyst activity.
    Type: Grant
    Filed: June 23, 2000
    Date of Patent: August 20, 2002
    Assignee: Borealis Technology Oy
    Inventors: Amir Karbasi, Pauli Leskinen, Pirjo J{umlaut over (aa)}skeläinen, Bo Malm, Päivi Pitkänen, Mika Härkönen, John Haugen
  • Patent number: 6333086
    Abstract: The present invention concerns a multilayered polymer film structure, which comprises at least one first layer (1) containing a thermoplastic polymer and at least one second layer (2), arranged adjacent to said first layer, containing a liquid crystalline polymer. According to the invention, the second layer (2) consists essentially of a compounded polymer blend formed by the liquid crystalline polymer and a thermoplastic polymer, the liquid crystalline polymer of the second layer forms a continuous phase, and the first and the second layers (1, 2) contain the same thermoplastic polymer. The oxygen transmission rate of the second layer is less than about 150 cm3/(m2·d·bar), determined according to the standard ASTM D 3985-81, and the water vapour transmission rate of the integral film structure is less than 10 g/(m2·24·h) at RH 80% 23° C., determined according to ASTM F 1249-90. The present structure can be used as a barrier layer in packages.
    Type: Grant
    Filed: January 29, 1996
    Date of Patent: December 25, 2001
    Assignee: Optatech Corporation
    Inventors: Marja Ora, Esa Suokas, Mika Härkönen, Seppo Kuusela, Erkki Laiho
  • Patent number: 6221974
    Abstract: The invention relates to a process for the preparation of a creep-resistant polypropylene by means of the following steps: (a) copolymerizing propylene and ethylene into a random copolymer at 40 to 110° C. using: a catalyst system of the above-mentioned type; a portion of ethylene or C4-C10-&agr;-olefin leading to 1.0 to 10.0% by weight of ethylene repeating units in said random copolymer; and no or a minimal amount of hydrogen leading to a MFR10 value of between 0.01 and 5.0 g/10 min for said random copolymer, if this step is performed first, or to a MFR2 value for said polypropylene of between 0.05 and 0.40 g/10 min, if this step is performed after step (b); the proportion of random copolymer of this step being from 20 to 80% by weight of said polypropylene, (b) polymerizing propylene at 40 to 110° C. using: a catalyst system of the above-mentioned type; no or a minimal portion of ethylene leading to 0.0 to 1.
    Type: Grant
    Filed: December 21, 1998
    Date of Patent: April 24, 2001
    Assignee: Borealis Technology Oy
    Inventors: Mika Härkönen, Bo Malm, Anders Nymark