Patents by Inventor Marshall P. Devine

Marshall P. Devine 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).

  • Mannich polyols for rigid spray foams
    Patent number: 6495722
    Abstract: Provided herein are polyurethane foams which may be prepared by spray techniques. The foams of the invention are prepared using conventional isocyanates and a novel Mannich condensate polyol having a hydroxy number in the range of 250-340 and a viscosity of 3500 cps or less, and wherein the Mannich condensate polyol is derived from nonylphenol, formaldehyde, an alkanolamine, and propylene oxide as the sole alkoxylating agent. Polyurethane foams prepared according to the invention possess superior physical properties over sprayed polyurethane foams prepared using Mannich condensate polyols which are made using mixtures of propylene oxide and ethylene oxide.
    Type: Grant
    Filed: September 17, 2001
    Date of Patent: December 17, 2002
    Assignee: Huntsman Petrochemical Corporation
    Inventors: Robert L. Zimmerman, Marshall P. Devine, Patrick L. Weaver