Patents by Inventor Dirk R L Ramael

Dirk R L Ramael 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).

  • Polymer-modified polyols, their use for the manufacture of polyurethane products
    Patent number: 6433031
    Abstract: The invention provides a high molecular weight polyol comprising dispersed therein the reaction of a polyisocyanate and low molecular weight polyol where said low molecular weight is a mixture of an alkanolamine with a polyethylene glycol having a molecular weight of less than 600. The invention also provides a method of making a polyurethane foam by reacting a polyisocyanate and a polyol using a blowing agent, where the polyol comprises the polyol of the invention. The invention also relates to the foam, especially the flexible foam, obtained by the process of the invention.
    Type: Grant
    Filed: November 28, 2001
    Date of Patent: August 13, 2002
    Assignee: Huntsman International LLC
    Inventor: Dirk R L Ramael