Patents by Inventor Kamlesh J. Padiya

Kamlesh J. Padiya 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).

  • Methods for preparing halohydrins and methods for preparing epoxides
    Patent number: 7456324
    Abstract: The invention includes methods for preparing halohydrins and epoxides. A method of preparing halohydrins can include exposing (R1CHXCH2O—)2SO2 to R2COOH to produce R1CHXCH2COOR2 and hydrolyzing the R1CHXCH2COOR2 to produce the halohydrin R1CHXCH2OH. R1 and R2 can be the same or different single elements and/or organic groups and X can be a halogen. A method of preparing an epoxide can include combining a sulfuric acid containing solution with a halogen to produce a first mixture and exposing the first mixture to trifluoropropene to produce a second mixture. The second mixture can be combined with acetic acid to produce an acetyl halohydrin of trifluoropropene and the acetyl halohydrin can be hydrolyzed to form a halohydrin of trifluoropropene. The halohydrin can be converted to a trifluoropropyl epoxide.
    Type: Grant
    Filed: June 1, 2007
    Date of Patent: November 25, 2008
    Assignee: Great Lakes Chemical Corp.
    Inventors: P. Veeraraghavan Ramachandran, Kamlesh J. Padiya, Venkatram R. Mereddy
  • Methods for preparing Halohydrins and methods for preparing Epoxides
    Publication number: 20070282137
    Abstract: The invention includes methods for preparing halohydrins and epoxides. A method of preparing halohydrins can include exposing (R1CHXCH2O—)2SO2 to R2COOH to produce R1CHXCH2COOR2 and hydrolyzing the R1CHXCH2COOR2 to produce the halohydrin R1CHXCH2OH. R1 and R2 can be the same or different single elements and/or organic groups and X can be a halogen. A method of preparing an epoxide can include combining a sulfuric acid containing solution with a halogen to produce a first mixture and exposing the first mixture to trifluoropropene to produce a second mixture. The second mixture can be combined with acetic acid to produce an acetyl halohydrin of trifluoropropene and the acetyl halohydrin can be hydrolyzed to form a halohydrin of trifluoropropene. The halohydrin can be converted to a trifluoropropyl epoxide.
    Type: Application
    Filed: June 1, 2007
    Publication date: December 6, 2007
    Inventors: P. V. Ramachandran, Kamlesh J. Padiya, Venkatram R. Mereddy