Patents by Inventor Elwin R. McAfee

Elwin R. McAfee 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).

  • ACID NUMBER REDUCTION AND HYDROLYSIS STABILIZATION OF BIO-BASED POLYESTER POLYOL COMPOSITIONS
    Publication number: 20110155960
    Abstract: The present invention provides polyester polyol compositions stabilized against hydrolysis and having a reduced acid number, namely, compositions comprising sterically hindered aromatic carbodiimides, the processes of making such compositions, a process for stabilizing against hydrolysis and/or reducing the acid number of polyester polyol compositions, and to the above wherein the polyols are bio-based polyester polyols such as soybean or castor oil based polyols.
    Type: Application
    Filed: August 14, 2009
    Publication date: June 30, 2011
    Applicant: RHEIN CHEMIE CORPORATION
    Inventor: Elwin R. McAfee