Patents by Inventor René Den Heeten

René Den Heeten 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).

  • Process for the production of polyether polyols
    Patent number: 9353039
    Abstract: A method to provide polyether polyols comprises the steps of •providing a crude polyether polyol mixture comprising polyether polyol and a base catalyst; •neutralizing said base catalyst; •removing, in a first dehydration step, at least part of the water from the neutralized polyether polyol; •redissolving at least part of the salt crystals obtained by removal of at least part of the water; •removing, in a second dehydration step, at least part of the water from the neutralized polyether polyol mixture, thereby providing salt crystals; •removing the salt crystals from the neutralized polyether polyol, thereby providing the polyether polyol mixture.
    Type: Grant
    Filed: April 25, 2013
    Date of Patent: May 31, 2016
    Assignee: HUNTSMAN INTERNATIONAL LLC
    Inventors: Rene Den Heeten, Paul Anton Termorshuizen
  • Process for the Production of Polyether Polyols
    Publication number: 20150133696
    Abstract: A method to provide polyether polyols comprises the steps of •providing a crude polyether polyol mixture comprising polyether polyol and a base catalyst; •neutralizing said base catalyst; •removing, in a first dehydration step, at least part of the water from the neutralized polyether polyol; •redissolving at least part of the salt crystals obtained by removal of at least part of the water; •removing, in a second dehydration step, at least part of the water from the neutralized polyether polyol mixture, thereby providing salt crystals; •removing the salt crystals from the neutralized polyether polyol, thereby providing the polyether polyol mixture.
    Type: Application
    Filed: April 25, 2013
    Publication date: May 14, 2015
    Inventors: René Den Heeten, Paul Anton Termorshuizen