Patents by Inventor Xiuguang A. Guo

Xiuguang A. Guo 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).

  • Patent number: 9212250
    Abstract: A method of improving the mechanical strength of polyurethane foams made from bio-based polyols, the polyol-containing compositions utilized in the method of the invention, and the polyurethane foams produced by the method of the invention are provided. The method of the invention involves the incorporation of aromatic polyester polyol in the polyol-containing composition used to manufacture the foams. In one embodiment, the aromatic polyester polyol is utilized in a polyol-containing composition which is employed in the manufacture of flexible polyurethane foam. In another embodiment, the aromatic polyester polyol transesterified with a natural oil-containing composition to form a transesterification reaction product that is utilized in a polyol-containing composition which is employed in the manufacture of flexible polyurethane foam.
    Type: Grant
    Filed: November 4, 2010
    Date of Patent: December 15, 2015
    Assignee: Stepan Company
    Inventors: Warren A. Kaplan, Xiuguang A. Guo, David J. Norberg
  • Patent number: 8440783
    Abstract: Enhanced oligomeric polyols are reported. The enhanced oligomeric polyols may be prepared by a method comprising the steps of: (a) providing an oligomeric polyol that comprises at least one glycerol fatty acid ester having at least one glycerol fatty acid ester bond; wherein at least 5% of the ethyldenyl groups (*C?C*) in the glycerol fatty acid ester are substituted with a bonding structure selected from the group consisting of: C-*C—C*-C; O-*C—C*-O; C=*C—C*-C, and mixtures thereof, where * is used to denote the original carbon atoms in the ethylidenyl group; and (b) cleaving at least a portion of the glycerol fatty acid ester bonds to form the enhanced oligomeric polyol. The enhanced oligomeric polyols are useful in making polymers such as polyurethanes.
    Type: Grant
    Filed: April 27, 2007
    Date of Patent: May 14, 2013
    Assignee: Cargill, Incorporated
    Inventors: Timothy W. Abraham, Jeff Malsam, Xiuguang A. Guo, Milhail Ionescu, Ivan J. Javni, Zoran S. Petrovic
  • Publication number: 20120277338
    Abstract: A method of improving the mechanical strength of polyurethane foams made from bio-based polyols, the polyol-containing compositions utilized in the method of the invention, and the polyurethane foams produced by the method of the invention are provided. The method of the invention involves the incorporation of aromatic polyester polyol in the polyol-containing composition used to manufacture the foams. In one embodiment, the aromatic polyester polyol is utilized in a polyol-containing composition which is employed in the manufacture of flexible polyurethane foam. In another embodiment, the aromatic polyester polyol transesterified with a natural oil-containing composition to form a transesterification reaction product that is utilized in a polyol-containing composition which is employed in the manufacture of flexible polyurethane foam.
    Type: Application
    Filed: November 4, 2010
    Publication date: November 1, 2012
    Inventors: Warren A. Kaplan, Xiuguang A. Guo, David J. Norberg
  • Patent number: 8153746
    Abstract: Methods of making unsaturated modified vegetable oil-based polyols are described. Also described are methods of making oligomeric modified vegetable oil-based polyols. An oligomeric composition having a modified fatty acid triglyceride structure is also described. Also, methods of making a polyol including hydroformylation and hydrogenation of oils in the presence of a catalyst and support are described.
    Type: Grant
    Filed: June 2, 2010
    Date of Patent: April 10, 2012
    Assignee: Cargill, Incorporated
    Inventors: Zoran S. Petrovic, Ivan X. Javni, Alisa Zlatanic, Andrew Xiuguang Guo
  • Publication number: 20100217022
    Abstract: Enhanced oligomeric polyols are reported. The enhanced oligomeric polyols may be prepared by a method comprising the steps of: (a) providing an oligomeric polyol that comprises at least one glycerol fatty acid ester having at least one glycerol fatty acid ester bond; wherein at least 5% of the ethyldenyl groups (*C?C*) in the glycerol fatty acid ester are substituted with a bonding structure selected from the group consisting of: C—*C—C*—C; O—*C—C*—O; C?*C—C*—C, and mixtures thereof, where * is used to denote the original carbon atoms in the ethylidenyl group; and (b) cleaving at least a portion of the glycerol fatty acid ester bonds to form the enhanced oligomeric polyol. The enhanced oligomeric polyols are useful in making polymers such as polyurethanes.
    Type: Application
    Filed: April 27, 2007
    Publication date: August 26, 2010
    Inventors: Timothy W. Abraham, Jeff Malsam, Xiuguang A. Guo, Milhail Ionescu, Ivan J. Javni, Zoran S. Petrovic