Patents by Inventor Richard R. Mitford

Richard R. Mitford 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: 8957256
    Abstract: Improved methods for making ethers. In particular, an alkoxide can be more effectively converted into an ether by reaction with a hydrocarbyl halide in the presence of a substantial excess of a hygroscopic base such as NaOH. When present in such an unconventional excess, the base serves multiple functions. As a consequence, the alkoxide is extensively converted to the desired ether rapidly at excellent yields. The reaction environment also aids later product isolation. The use of the NaOH rather than Na metal allows the ether product to be separated from water soluble impurities such as salt products, left over base, left over hydrocarbyl halide, formates, etc. by liquid-liquid extraction among aqueous and organic phases.
    Type: Grant
    Filed: September 22, 2008
    Date of Patent: February 17, 2015
    Assignee: Dow Global Technologies LLC
    Inventors: Stephen W. King, Richard R. Mitford, Jeffrey G. Hippler
  • Publication number: 20100280277
    Abstract: Improved methods for making ethers. In particular, an alkoxide can be more effectively converted into an ether by reaction with a hydrocarbyl halide in the presence of a substantial excess of a hygroscopic base such as NaOH. When present in such an unconventional excess, the base serves multiple functions. As a consequence, the alkoxide is extensively converted to the desired ether rapidly at excellent yields. The reaction environment also aids later product isolation. The use of the NaOH rather than Na metal allows the ether product to be separated from water soluble impurities such as salt products, left over base, left over hydrocarbyl halide, formates, etc. by liquid-liquid extraction among aqueous and organic phases.
    Type: Application
    Filed: September 22, 2008
    Publication date: November 4, 2010
    Applicant: DOW GLOBAL TECHNOLOGIES INC.
    Inventors: Stephen W. King, Richard R. Mitford, Jeffrey G. Hippler