Patents by Inventor Dmitry A. Krapchetov

Dmitry A. Krapchetov 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).

  • METHOD FOR PRODUCTION OF METHYL METHACRYLATE BY OXIDATIVE ESTERIFICATION USING A HETEROGENEOUS CATALYST
    Publication number: 20200165185
    Abstract: A method for preparing methyl methacrylate from methacrolein and methanol. The method comprises contacting a mixture comprising methacrolein, methanol and oxygen with a heterogeneous catalyst comprising a support and a noble metal, wherein said catalyst has an average diameter of at least 200 microns and at least 90 wt % of the noble metal is in the outer 50% of catalyst volume. A method for preparing methyl methacrylate from methacrolein and methanol. The method comprises contacting a mixture comprising methacrolein, methanol and oxygen with a heterogeneous catalyst comprising a support and a noble metal; wherein said catalyst has an average diameter of at least 200 microns and average concentration of methacrolein is at least 15 wt %.
    Type: Application
    Filed: June 25, 2018
    Publication date: May 28, 2020
    Inventors: Dmitry A. Krapchetov, Kirk W. Limbach, Daniel A. Hickman, Andrew T. Heitsch, Victor Sussman, Wen Sheng Lee, Ramzy Shayib
  • PROCESS FOR PREPARING METHACROLEIN
    Publication number: 20200157032
    Abstract: Provided is a process for preparing methacrolein which maximizes capture of methanol. Also provided are processes for producing methacrylic acid and methyl methacrylate.
    Type: Application
    Filed: May 24, 2018
    Publication date: May 21, 2020
    Inventors: Reetam Chakrabarti, Dmitry A. Krapchetov, Mark A. Silvano, Jinsuo Xu
  • A METHOD FOR PRODUCTION OF METHYL METHACRYLATE BY OXIDATIVE ESTERIFICATION USING A HETEROGENEOUS CATALYST
    Publication number: 20200157036
    Abstract: A method for preparing methyl methacrylate from methacrolein and methanol; said method comprising contacting in a reactor a mixture comprising methacrolein, methanol and oxygen with a heterogeneous catalyst comprising a support and a noble metal, wherein pH at the reactor outlet is from 3 to 6.7.
    Type: Application
    Filed: June 25, 2018
    Publication date: May 21, 2020
    Applicants: Dow Global Technologies LLC, Rohm and Haas Company
    Inventors: Dmitry A. Krapchetov, James Elder, William G. Worley, Kirk W. Limbach, Daniel A. Hickman, Alexey Kirilin, Wen Sheng Lee, Victor Sussman
  • A METHOD FOR PRODUCTION OF METHYL METHACRYLATE BY OXIDATIVE ESTERIFICATION USING A HETEROGENEOUS CATALYST
    Publication number: 20200148620
    Abstract: A method for preparing methyl methacrylate from methacrolein and methanol. The method comprises contacting in a reactor a mixture comprising methacrolein, methanol and oxygen with a heterogeneous catalyst comprising a support and a noble metal, wherein said catalyst has an average diameter of at least 200 microns, wherein oxygen concentration at a reactor outlet is from 0.5 to 7.5 mol % and wherein the reactor comprises a partition with the catalyst bed on a first side of the partition and with flow through the catalyst bed in a first direction and flow on a second side of the partition in an opposite direction.
    Type: Application
    Filed: June 25, 2018
    Publication date: May 14, 2020
    Inventors: Kirk W. Limbach, Dmitry A. Krapchetov, Christopher D. Frick, Daniel A. Hickman
  • PROCESS FOR PREPARING METHACROLEIN
    Publication number: 20200140363
    Abstract: Provided is a process for preparing methacrolein which maximizes capture of methanol. Also provided are processes for producing methacrylic acid and methyl methacrylate.
    Type: Application
    Filed: May 24, 2018
    Publication date: May 7, 2020
    Inventors: Reetam Chakrabarti, Dmitry A. Krapchetov, Mark A. Silvano, Jinsuo Xu