Patents by Inventor Ludmila Gennadyevna Echevskaya

Ludmila Gennadyevna Echevskaya 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 introducing carbonyl groups into polymers containing double carbon-carbon linkages
    Patent number: 7385011
    Abstract: The invention discloses a method for selectively introducing carbonyl groups into polymers by oxygenation of double C?C bonds of polymers with the aid of nitrous oxide (N2O) at a temperature comprised between 50 and 350° C. and a pressure of N2O of from 0.01 to 100 atmospheres. The introduction of an insignificant amount of C?O groups allows one to modify the physico-chemical properties of a polymer, with its molecular weight and molecular-weight distribution preserved. Deeper oxygenation results in controlled cleavage of polymer macromolecules and makes it possible to produce oxygen-containing oligomers having a desired molecular weight.
    Type: Grant
    Filed: May 17, 2004
    Date of Patent: June 10, 2008
    Assignee: Institut Kataliza Imeni G.K. Boreskova, Sibirskogo Otdeleniya Rossiiskoi Akademii Nauk
    Inventors: Constantin Alexandrovich Dubkov, Sergey Vladimirovich Semikolenov, Vladimir Alexandrovich Zakharov, Valentin Nikolaevich Parmon, Ludmila Gennadyevna Echevskaya, Evgeny Vladimirovich Starokon, Gennady Ivanovich Panov