Patents by Inventor Hanno van der Wal

Hanno van der Wal 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).

  • Fusible catalysts and polyurethane products made therefrom
    Publication number: 20070073029
    Abstract: The present invention pertains to fusible catalysts, to processes for their manufactures and to their use in the production of low emission Polyurethane products.
    Type: Application
    Filed: June 10, 2004
    Publication date: March 29, 2007
    Inventors: Francois Casati, Hanno Van Der Wal, William Harris, Jerry White, Ray Drumright, Robert Weber
  • Process to manufacture polyurethane products using polymer polyols in which the carrier polyol is a tertiary amone based polyol
    Publication number: 20050043421
    Abstract: The present invention pertains to a copolymer polyols based on tertiary amine based polyols and to polyurethane products made therefrom. The use oof such copolymer polyols reduces the amount of amine catalysts needed for the production of polyurethane foam.
    Type: Application
    Filed: August 15, 2002
    Publication date: February 24, 2005
    Inventors: Hanno Van der Wal, Francois Casati, Ronald Herrington, Thomas Woods
  • Polymer polyol dispersions, a process for making them and polyurethane foams prepared using such polyol dispersions
    Patent number: 5244932
    Abstract: The dispersion of a polymer in a polyol is characterized in that the polymer is a product ofA) a reaction product of an epoxy compound and an aromatic acid andB) an epoxy hardenerand the epoxy compound is the reaction product of a polyphenol an epihalohydrin, of a polyalcohol and an epihalohydrin, of an amine and an epihalohydrin, of a sulfur-containing compound and an epihalohydrin, of a polycarboxylic acid and an epihalohydrin or of a polyisocyanate and 2,3-epoxy-1-propanol or the reaction product of a mixture or polyphenols, polyalcohols, amines, sulfur-containing compounds, polycarbolic acids and/or polyisocyanates and an epihalohydrin.The dispersion is useful for producing polyurethane foams.
    Type: Grant
    Filed: September 8, 1989
    Date of Patent: September 14, 1993
    Assignee: The Dow Chemical Company
    Inventor: Hanno van der Wal