Patents by Inventor Oleg V. Krylov

Oleg V. Krylov 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 of preparing methacrylic acid
    Patent number: 4127603
    Abstract: A method of preparing methacrylic acid, which comprises liquid-phase oxidation of alpha-methylacrolein with an oxygen-containing gas in a medium of an organic solvent at a temperature ranging from 50.degree. to 100.degree. C and under a pressure of from 1 to 50 atm in the presence of a heterogeneous catalyst such as borides, carbides or nitrides of elements pertaining to Groups IVB-VB of the periodic system, or aluminum boride, carbide or nitride and in the presence of a polymerization inhibitor, whereafter the desired product is separated from the resulting reaction mixture. The method according to the present invention makes it possible to produce methacrylic acid with a high selectivity (up to 86% as calculated for the reacted alpha-methylacrolein). Conversion degree of the starting aldehyde is as high as 55%. There is no formation of polymeric products during the oxidation process.
    Type: Grant
    Filed: February 16, 1977
    Date of Patent: November 28, 1978
    Inventors: Erna A. Bljumberg, Gennady F. Vytnov, Oleg V. Isaev, Oleg V. Krylov, Sergei A. Maslov, Lia Y. Margolis, Alexandr P. Sineokov, Evgeny S. Smirnov, Levon A. Tavadian, Nikolai M. Emanuel, Kapitalina I. Grobova, Valentina V. Krylova