Patents by Inventor Vitaliy Aleksandrovich Tret'jakov

Vitaliy Aleksandrovich Tret'jakov 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).

  • Patent number: 9539569
    Abstract: A method of production of sorbents involving acylation of a macroporous styrene-divinylbenzene copolymer in the presence of the Friedel-Crafts catalyst—aluminum chloride. The acylation reaction is carried out using acetyl chloride in a dichloroethane solvent at boiling the solution. This is followed by phosphorylation of the obtained acylated copolymer with phosphorus trichloride at room temperature; the product is hydrolyzed with water, washed and dried. The technical result consists in production of a complexing adsorbent highly selective for scandium and simplification of the production process.
    Type: Grant
    Filed: January 17, 2014
    Date of Patent: January 10, 2017
    Assignee: AXION-RARE-EARTH AND NOBLE METALS JSC
    Inventors: Vitaliy Aleksandrovich Tret'jakov, Dmitriy Alekseevich Kondruckiy, Gadzhi Rabadanovich Gadzhiev, Aleksandr Faddeevich Bobrov, Aleksey Gennad'evich Nesterov
  • Publication number: 20160101416
    Abstract: A method of production of sorbents involving acylation of a macroporous styrene-divinylbenzene copolymer in the presence of the Friedel-Crafts catalyst—aluminum chloride. The acylation reaction is carried out using acetyl chloride in a dichloroethane solvent at boiling the solution. This is followed by phosphorylation of the obtained acylated copolymer with phosphorus trichloride at room temperature; the product is hydrolyzed with water, washed and dried. The technical result consists in production of a complexing adsorbent highly selective for scandium and simplification of the production process.
    Type: Application
    Filed: January 17, 2014
    Publication date: April 14, 2016
    Inventors: Vitaliy Aleksandrovich Tret'jakov, Dmitriy Alekseevich Kondruckiy, Gadzhi Rabadanovich Gadzhiev, Aleksandr Faddeevich Bobrov, Aleksey Gennad'evich Nesterov