Patents by Inventor Igor G. Gakh

Igor G. Gakh 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 preparing 2,4-diaminolphenol or 2,4-diamonophenol dihydrochloride
    Patent number: 4323708
    Abstract: A method for preparing 2,4-diaminophenol or 2,4-diaminophenol dihydrochloride comprising hydrogenation of 2,4-dinitrophenol on a membrane catalyst made of an alloy consisting of 90 to 98% by mass of palladium, 2 to 10% by mass of rhodium or ruthenium. Said hydrogenation of 2,4-dinitrophenol is effected by hydrogen diffusing through said membrane catalyst. The starting 2,4-dinitrophenol is used in a medium of water or a 4--37% aqueous solution of hydrochloric acid at a concentration of 2,4-dinitrophenol in said medium ranging from 2 to 50% by mass. The hydrogenation is effected at a temperature within the range of from 50.degree. to 150.degree. C. under a pressure of from 1 to 60 atm.
    Type: Grant
    Filed: April 14, 1980
    Date of Patent: April 6, 1982
    Inventors: Alexandr P. Mischenko, Vladimir M. Gryaznov, Igor G. Gakh, Iraida L. Parbuzina, Evgeny M. Savitsky, Viktoria P. Polyakova, Natalia R. Roshan
  • Method of preparing dimethylacetamide in presence of MoO.sub.3 catalyst
    Patent number: 4139557
    Abstract: A method of preparing dimethylacetamide which comprises interaction of acetic acid and dimethylamine. The thus-prepared dimethylamine acetate is decomposed upon heating in the presence of a catalyst, viz. molybdenum oxide. Thereafter, the desired product is isolated by conventional techniques.
    Type: Grant
    Filed: December 27, 1976
    Date of Patent: February 13, 1979
    Inventors: Mikhail B. Neduv, Vladimir I. Bazakin, Taisia I. Komarenko, Svetlana M. Zenchenko, Zinaida F. Kirpichnikova, Igor G. Gakh