Patents by Inventor Minna Stalhammar

Minna Stalhammar 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).

  • Ligand modified Ziegler-Natta catalyst for olefin (co-)polymerization
    Patent number: 7998894
    Abstract: The present invention relates to a Ziegler-Natta catalyst comprising a solid, ligand-modified catalyst component formed at least from (a) a compound of Group 1 to 3 of the Periodic Table (IUPAC), (b) a transition metal compound of Group 4 to 10 of the Periodic Table (IUPAC), or a compound of an actinide or lanthanide, (c) one or more organic ligand compound(s) which is/are selected from organic compounds comprising a cyclopentadienyl anion backbone, and (d) a compound of Group 13 of the Periodic Table, wherein the catalyst component of said Ziegler-Natta catalyst is formed in an emulsion/solidification method, to a process for the production of such a catalyst, and to a process for the production of an olefin (co-)polymer in the presence of such a catalyst.
    Type: Grant
    Filed: July 13, 2007
    Date of Patent: August 16, 2011
    Assignee: Borealis Technology Oy
    Inventors: Marjo Väänänen, Minna Stalhammar, Young-Soo Ko, Siw Fredriksen, Marita Savilahti
  • Ziegler-Natta Catalyst and Its Use To Prepare Multimodal Polyolefin
    Publication number: 20100130705
    Abstract: The present invention provides a method for tailoring the molecular weight distribution of a multimodal (e.g. bimodal) ethylene polymer having a lower molecular weight component and a higher molecular weight component comprising polymerising ethylene and optionally at least one further alpha olefin in at least two stages, wherein at least one stage is carried out in a slurry phase in the presence of a Ziegler Natta catalyst comprising an electron donor which is an ether.
    Type: Application
    Filed: November 1, 2006
    Publication date: May 27, 2010
    Applicant: Borelis Technology OY
    Inventors: Jarmo Lindroos, Mats Backman, Thomas Garoff, Peter Idelmann, Solveig Johansonn, Young Soo Ko, Minna Stalhammar, Paivi Waldvogel
  • LIGAND-MODIFIED ZIEGLER-NATTA CATALYST FOR OLEFIN (CO-) POLYMERIZATION
    Publication number: 20090292089
    Abstract: The present invention relates to a Ziegler-Natta catalyst comprising a solid, ligand-modified catalyst component formed at least from (a) a compound of Group 1 to 3 of the Periodic Table (IUPAC), (b) a transition metal compound of Group 4 to 10 of the Periodic Table (IUPAC), or a compound of an actinide or lanthanide, (c) one or more organic ligand compound(s) which is/are selected from organic compounds comprising a cyclopentadienyl anion backbone, and (d) a compound of Group 13 of the Periodic Table, wherein the catalyst component of said Ziegler-Natta catalyst is formed in an emulsion/solidification method, to a process for the production of such a catalyst, and to a process for the production of an olefin (co-)polymer in the presence of such a catalyst.
    Type: Application
    Filed: July 13, 2007
    Publication date: November 26, 2009
    Applicant: BOREALIS TECHNOLOGY OY
    Inventors: Marjo Vaananen, Minna Stalhammar, Young-Soo Ko, Siw Fredriksen, Marita Sutela