Patents by Inventor Veli-Matti Keinänen

Veli-Matti Keinänen 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 improving flowability of random polypropylene powder
    Patent number: 8975333
    Abstract: Method for the preparation of a sticky random propylene copolymer (R-PP) in a reactor facility comprising in series (i) a first reaction system, (ii) a first conveying line connecting the first reactor system with a second reactor system comprising an outlet, (iii) a second conveying line connecting the outlet with a purge bin comprising a feeder, and (iv) a conveying system being connected with the feeder, and the preparation of said random propylene copolymer (R-PP) comprises the steps in the order of (a) producing in said first reactor system a propylene homopolymer (H-PP) or a random propylene copolymer (R-PP1), (b) transferring at least a part of said polypropylene to said second reactor system via the first conveying line, (c) producing in said second reactor system a random propylene copolymer (R-PP2) obtaining the random propylene copolymer (R-PP), (d) discharging said random propylene copolymer (R-PP) from said second reactor system via the outlet, (e) transferring said discharged random propylene co
    Type: Grant
    Filed: November 18, 2009
    Date of Patent: March 10, 2015
    Assignee: Borealis AG
    Inventors: Pauli Leskinen, Olli Tuominen, Veli-Matti Keinänen
  • Method for improving flowability of heterophasic polypropylene powder
    Patent number: 8841390
    Abstract: Method for the preparation of a sticky high impact heterophasic polypropylene (HECO) in a reactor facility comprising in series (i) a first reaction system, (ii) a first conveying line connecting the first reactor system with a second reactor system comprising an outlet, (iii) a second conveying line connecting the outlet with a purge bin comprising a feeder, and (iv) a conveying system being connected with the feeder, and the preparation of said heterophasic polypropylene (HECO) comprises the steps in the order of (a) producing in said first reactor system the polypropylene matrix (M), (b) transferring at least a part of said polypropylene to said second reactor system via the first conveying line, (c) producing in said second reactor system the elastomeric copolymer obtaining the heterophasic polypropylene (HECO), (d) discharging said heterophasic polypropylene (HECO) from said second reactor system via the outlet, (e) transferring said discharged heterophasic polypropylene (HECO) via the second conveying l
    Type: Grant
    Filed: November 18, 2009
    Date of Patent: September 23, 2014
    Assignee: Borealis AG
    Inventors: Pauli Leskinen, Olli Tuominen, Veli-Matti Keinänen
  • METHOD FOR IMPROVING FLOWABILITY OF HETEROPHASIC POLYPROPYLENE POWDER
    Publication number: 20110294940
    Abstract: Method for the preparation of a sticky high impact heterophasic polypropylene (HECO) in a reactor facility comprising in series (i) a first reaction system, (ii) a first conveying line connecting the first reactor system with a second reactor system comprising an outlet, (iii) a second conveying line connecting the outlet with a purge bin comprising a feeder, and (iv) a conveying system being connected with the feeder, and the preparation of said heterophasic polypropylene (HECO) comprises the steps in the order of (a) producing in said first reactor system the polypropylene matrix (M), (b) transferring at least a part of said polypropylene to said second reactor system via the first conveying line, (c) producing in said second reactor system the elastomeric copolymer obtaining the heterophasic polypropylene (HECO), (d) discharging said heterophasic polypropylene (HECO) from said second reactor system via the outlet, (e) transferring said discharged heterophasic polypropylene (HECO) via the second conveying l
    Type: Application
    Filed: November 18, 2009
    Publication date: December 1, 2011
    Applicant: Borealis AG
    Inventors: Pauli Leskinen, Olli Tuominen, Veli-Matti Keinänen
  • METHOD FOR IMPROVING FLOWABILITY OF RANDOM POLYPROPYLENE POWDER
    Publication number: 20110294937
    Abstract: Method for the preparation of a sticky random propylene copolymer (R-PP) in a reactor facility comprising in series (i) a first reaction system, (ii) a first conveying line connecting the first reactor system with a second reactor system comprising an outlet, (iii) a second conveying line connecting the outlet with a purge bin comprising a feeder, and (iv) a conveying system being connected with the feeder, and the preparation of said random propylene copolymer (R-PP) comprises the steps in the order of (a) producing in said first reactor system a propylene homopolymer (H-PP) or a random propylene copolymer (R-PP1), (b) transferring at least a part of said polypropylene to said second reactor system via the first conveying line, (c) producing in said second reactor system a random propylene copolymer (R-PP2) obtaining the random propylene copolymer (R-PP), (d) discharging said random propylene copolymer (R-PP) from said second reactor system via the outlet, (e) transferring said discharged random propylene co
    Type: Application
    Filed: November 18, 2009
    Publication date: December 1, 2011
    Applicant: Borealis AG
    Inventors: Pauli Leskinen, Olli Tuominen, Veli-Matti Keinänen