Patents by Inventor Jukka Koshinen

Jukka Koshinen 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 preparing active carrier particles of equal size for a polymerization catalyst
    Patent number: 5905050
    Abstract: The active carrier particles of even size of the polymerization catalyst are prepared so that a melt of a complex composition is provided having the formula (I)MgCl.sub.2 nROH mED (I)in which ROH depicts an aliphatic alcohol, R is a C.sub.1 -C.sub.6 alkyl, ED depicts an electron donor, n is 1 to 6 and m is 0 to 1; the melt provided is fed to a nozzle (4); the melt is sprayed from the nozzle (4) to the spraying area (5), in which it is divided into fine melt droplets and possibly partly solidifies; the possibly partly solidified melt particles are transferred to a cooled crystallization area (6), where they crystallize to solid carrier particles; and the solid carrier particles are recovered. The melt mentioned is sprayed through a nozzle (4), which is rotated or which has attached to it a member that rotates and throws melt outwards from the rotating center to the spraying area (5).
    Type: Grant
    Filed: November 30, 1993
    Date of Patent: May 18, 1999
    Assignee: Borealis Holding A/S
    Inventors: Jukka Koshinen, Jarmo Louhelainen