Patents by Inventor Suresh Kattimuttathu Ittara

Suresh Kattimuttathu Ittara 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).

  • Process for preparing polyurethane polyol and rigid foams therefrom
    Patent number: 7244772
    Abstract: We describe a process for the preparation of polyurethane polyol from CARDANOL 3-(8pentadecenyl)phenol, derived from cashew nut shell liquid (CNSL), a renewable resource material. The polyol is made by oxidation with peroxy acid generated in situ to give epoxidised CARDANOL 3-(8-pentadecenyl)phenol and the epoxy derivative is converted to the polyol in the presence of the organic acid. The cardanol-based polyol may be reacted with isocyanate to form polyurethane. Alternatively blowing agents are included with the cardanol-based polyol before it is reacted with the isocyanate. These polyols are especially suitable for making rigid foams of very low density and high compressive strength.
    Type: Grant
    Filed: June 30, 2004
    Date of Patent: July 17, 2007
    Assignee: Council of Scientific and Industrial Research
    Inventors: Suresh Kattimuttathu Ittara, Kishanprasad Vadi Sarangapani