Patents by Inventor Tom Elovirta

Tom Elovirta 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).

  • Method for producing an olefin polymerization catalyst
    Patent number: 10035866
    Abstract: The present invention is directed to a process for producing a solid olefin polymerization catalyst component from an emulsion wherein the particle size of the solid catalyst or the droplet size of the emulsion is controlled. The actual size of the droplets or the solid catalyst particles is measured, or alternatively, both are measured. Then a difference between the actual size and the set point is calculated and the process is controlled based on the difference.
    Type: Grant
    Filed: October 30, 2014
    Date of Patent: July 31, 2018
    Assignee: Borealis AG
    Inventors: Peter Denifl, Timo Leinonen, Pasi Matikainen, Tom Elovirta
  • A METHOD FOR PRODUCING AN OLEFIN POLYMERIZATION CATALYST
    Publication number: 20160272735
    Abstract: The present invention is directed to a process for producing a solid olefin polymerization catalyst component from an emulsion wherein the particle size of the solid catalyst or the droplet size of the emulsion is controlled. The actual size of the droplets or the solid catalyst particles is measured, or alternatively, both are measured. Then a difference between the actual size and the set point is calculated and the process is controlled based on the difference.
    Type: Application
    Filed: October 30, 2014
    Publication date: September 22, 2016
    Inventors: Peter DENIFL, Timo LEINONEN, Pasi MATIKAINEN, Tom ELOVIRTA
  • Process for olefin polymerization
    Patent number: 8501881
    Abstract: The present application provides a process for polymerizing at least one olefin in the presence of a polymerization catalyst, including: (A) continuously introducing a first liquid with a transition metal compound, an organometallic compound, and a solvent and a second liquid into an emulsification stage, (B) continuously withdrawing the emulsion and directing it into a solidification stage to form a slurry with a solid polymerization catalyst component, (C) continuously recovering the solid polymerization catalyst component, (D) directing the solid polymerization catalyst component into a first prepolymerization stage with a monomer and a second liquid to form a slurry, (E) recovering a prepolymerized solid polymerization catalyst component, (F) continuously introducing the prepolymerized solid polymerization catalyst component into a second prepolymerization stage with an olefin monomer to form a prepolymerized catalyst, and (G) continuously withdrawing the prepolymerized catalyst and directing it into a su
    Type: Grant
    Filed: November 11, 2010
    Date of Patent: August 6, 2013
    Assignee: Borealis AG
    Inventors: Jeannette Aumo, Pasi Matikainen, Michael Bartke, Tom Elovirta, Sameer Vijay, Mikko Lylykangas, Pertti Elo, Lauri Huhtanen
  • Process for Olefin Polymerization
    Publication number: 20120259076
    Abstract: The present application provides a process for polymerizing at least one olefin in the presence of a polymerization catalyst, including: (A) continuously introducing a first liquid with a transition metal compound, an organometallic compound, and a solvent and a second liquid into an emulsification stage, (B) continuously withdrawing the emulsion and directing it into a solidification stage to form a slurry with a solid polymerization catalyst component, (C) continuously recovering the solid polymerization catalyst component, (D) directing the solid polymerization catalyst component into a first prepolymerization stage with a monomer and a second liquid to form a slurry, (E) recovering a prepolymerized solid polymerization catalyst component, (F) continuously introducing the prepolymerized solid polymerization catalyst component into a second prepolymerization stage with an olefin monomer to form a prepolymerized catalyst, and (G) continuously withdrawing the prepolymerized catalyst and directing it into a su
    Type: Application
    Filed: November 11, 2010
    Publication date: October 11, 2012
    Applicant: BOREALIS AG
    Inventors: Jeannette Aumo, Pasi Matikainen, Michael Bartke, Tom Elovirta, Sameer Vijay, Mikko Lylykangas, Pertti Elo, Lauri Huhtanen