Patents by Inventor Nikolai V. Ljubimov

Nikolai V. Ljubimov 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