Patents by Inventor Igor J. Logutov

Igor J. Logutov 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).

  • Process for the preparation of 3,5-di-tert-butyl-4-hydroxy methoxybenzyl alcohol
    Patent number: 5364974
    Abstract: Claimed is a process for the preparing 3,5-di-tert-butyl-4-hydroxy-methoxybenzyl alcohol which is an effective stabilizer of polymer materials and a starting compound in synthesis of high- effective polynuclear phenolic stabilizers.It is an object of this invention to provide a simplification of the process and improve a quality of the target product.This object is attained by using N,N,N',N'-tetra-methyl-methylene-bis-amine as a catalyst with the molar ratio of 2,6-DTBP to formaldehyde to methanol to bis-amine as of 1.0:1.0-1.5:10-15: 0.01-0.50 and conducting a process at 60.degree.-100.degree. C.
    Type: Grant
    Filed: December 21, 1993
    Date of Patent: November 15, 1994
    Assignee: Sterlitamaxky Neftekhimichesky Zavod
    Inventors: Boris I. Pantukh, Igor J. Logutov, Nikolai V. Ljubimov, Grigory I. Rutman
  • Method for the production of 2,4,6-tri(3,5-ditertiary butyl-4-hydroxybenzyl) mesitylene
    Patent number: 4259534
    Abstract: A method for the production of 2,4,6-tri(3,5-ditertiary butyl-4-hydroxybenzyl)mesitylene which resides in treating a mesitylene solution in chloroalkane simultaneously with sulfuric acid used as a catalyst and a solution of 2,6-ditertiary butyl-4-methoxymethylphenol or bis-3,5-ditertiary butyl-4-hydroxybenzyl ether in chloroalkane at a temperature of -20.degree. to +20.degree. C. This results in a reaction mixture consisting of an acid phase and an organic phase including the target product. The phases are separated. The organic phase is subjected to neutralization by the treatment thereof with gaseous ammonia used as an alkaline agent. The precipitate of ammonium sulfate is separated and chloroalkane is removed from the remaining solution.The proposed method makes it possible to obtain the target product with a yield of 88 to 90% and a melting temperature of 239.degree. to 239.5.degree. C.The method prevents the formation of effluents, and the amount of phenol wastes is considerably reduced.
    Type: Grant
    Filed: October 7, 1977
    Date of Patent: March 31, 1981
    Inventors: Yakov A. Gurvich, Simona T. Kumok, Galina G. Latysheva, Anna I. Rybak, Evgeny L. Styskin, Alexandr G. Liakumovich, Jury I. Michurov, Rufina A. Filipova, Vladimir A. Yanshevsky, Grigory I. Rutman, Igor J. Logutov
  • Method of removing aluminum-containing catalyst from phenol alkylation products
    Patent number: 4232176
    Abstract: Method of removing aluminum-containing catalyst from phenol alkylation products comprises treating phenol alkylation products with water at a temperature of 165.degree.-250.degree. C., with water being in molar excess to aluminum in a range of 3-20. The resulting residue of meta-aluminate is easily separated by filtration.The present invention allows eliminating constant control of aluminum content in alkylation products, easily removing the catalyst therefrom and eliminating the loss of phenol alkylation products.
    Type: Grant
    Filed: June 14, 1976
    Date of Patent: November 4, 1980
    Inventors: Engel R. Adigamov, Yakov A. Gurvich, Alexandr G. Liakumovich, Igor J. Logutov, Jury I. Michurov, Alexei S. Polenov, Vladimir A. Yanshevsky