Patents by Inventor Michael A. P. Gansow

Michael A. P. Gansow 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).

  • Tertiary amine-containing polyols prepared in a Mannich condensation reaction using a mixture of alkanolamines
    Patent number: 5120815
    Abstract: An improved process for preparing Mannich polyols is disclosed. The process involves capping a Mannich condensate of a phenolic compound or an amino-substituted s-triazine with a small quantity of an alkylene oxide in the absence of an alkylene oxide polymerization catalyst, prior to heating the condensate to elevated temperatures at which polycondensates are formed. The capped Mannich condensate is then alkoxylated to form the desired polyol.
    Type: Grant
    Filed: June 29, 1989
    Date of Patent: June 9, 1992
    Assignee: The Dow Chemical Company
    Inventors: John E. Marugg, Michael A. P. Gansow, Johan A. Thoen
  • Process for making low density flexible polyisocyanurate-polyurethane foams
    Patent number: 4981880
    Abstract: Low density flexible molded and slabstock foams are prepared by reacting a polyisocyanate with a polyol composition containing a mono-alcohol. The blowing of the foam is essentially with carbon dioxide generated from the reaction of water with isocyanate, and the reaction catalysts used in the preparation of the foam include a polyisocyanate trimerization catalyst.
    Type: Grant
    Filed: January 24, 1990
    Date of Patent: January 1, 1991
    Assignee: The Dow Chemical Company
    Inventors: Christian M. Lehmann, Michael A. P. Gansow
  • Melamine-alkanolamine condensates and polyurethanes prepared therefrom
    Patent number: 4939182
    Abstract: Condensates of certain amino-substituted s-triazines, formaldehyde and alkanolamines are disclosed. These condensates can be used, with or without alkoxylation, in forming polyurethanes having desirable burn properties.
    Type: Grant
    Filed: July 27, 1988
    Date of Patent: July 3, 1990
    Assignee: The Dow Chemical Company
    Inventors: John E. Marugg, Johan A. Thoen, Michael A. P. Gansow
  • Tertiary amine-containing polyols prepared in a mannich condensation reaction using a mixture of alkanolamines
    Patent number: 4883826
    Abstract: Mannich polyols of low viscosity and reduced reactivity are prepared by condensing a phenolic compound with formaldehyde and a mixture of diethanolamine and at least one other alkanol amine. The condensation product is the alkoxylated to form a polyol which is particularly useful in preparing rigid polyurethane foam.
    Type: Grant
    Filed: July 27, 1988
    Date of Patent: November 28, 1989
    Assignee: The Dow Chemical Company
    Inventors: J. E. Marugg, Michael A. P. Gansow, J. A. Thoen
  • Preparation of polyether compositions
    Patent number: 4877879
    Abstract: In an improved process for the preparation of polyether compositions, amine-initiated, alkaline catalyzed polyethers are neutralized with a substantial excess of formic acid that neutralizes the catalyst and stabilizes the resultant composition. This is particularly advantageous where tertiary nitrogen is found in the amine initiator or in the polyether that results.
    Type: Grant
    Filed: January 4, 1988
    Date of Patent: October 31, 1989
    Assignee: Dow Chemical (Nederland) B.V.
    Inventor: Michael A. P. Gansow
  • Process for preparing rigid polyurethane foams
    Patent number: 4704411
    Abstract: This invention is directed to a process by preparing a rigid polyurethane foam which comprise reacting a polyisocyanate with a polyol in the presence of a blowing agent, a polymerization catalyst and a surfactant.
    Type: Grant
    Filed: June 30, 1986
    Date of Patent: November 3, 1987
    Assignee: The Dow Chemical Company
    Inventors: Michael A. P. Gansow, Omar B. Shadid, Johannes E. G. Spork