Patents by Inventor Renata Yelizarov

Renata Yelizarov 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).

  • Publication number: 20190144754
    Abstract: The invention provides a process for preparing bromine-containing polymers, comprising a Friedel-Crafts alkylation reaction of pentabromobenzyl halide with a polymer reactant which contains one or more six-membered aromatic ring(s) in its repeat unit, in the presence of at least one Friedel-Crafts catalyst. The so-formed bromine-containing polymers, having pendent —CH2C6Br5 groups attached to at least a portion of the six-membered aromatic rings of the polymer, with a carbon ring atom of said six-membered aromatic ring being bonded to the aliphatic carbon of said —CH2C6Br5 pendent group, are also provided. These bromine-containing polymers are useful as flame retarding agents.
    Type: Application
    Filed: January 14, 2019
    Publication date: May 16, 2019
    Inventors: Mark Gelmont, Michael Yuzefovich, David Yoffe, Renata Yelizarov, Ron Frim, Lior Melamed
  • Patent number: 10227531
    Abstract: The invention provides a process for preparing bromine-containing polymers, comprising a Friedel-Crafts alkylation reaction of pentabromobenzyl halide with a polymer reactant which contains one or more six-membered aromatic ring(s) in its repeat unit, in the presence of at least one Friedel-Crafts catalyst. The so-formed bromine-containing polymers, having pendent —CH2C6Br5 groups attached to at least a portion of the six-membered aromatic rings of the polymer, with a carbon ring atom of said six-membered aromatic ring being bonded to the aliphatic carbon of said —CH2C6Br5 pendent group, are also provided. These bromine-containing polymers are useful as flame retarding agents.
    Type: Grant
    Filed: July 7, 2015
    Date of Patent: March 12, 2019
    Assignee: Bromine Compounds Ltd.
    Inventors: Mark Gelmont, Michael Yuzefovich, David Yoffe, Renata Yelizarov, Ron Frim, Lior Melamed
  • Publication number: 20170145313
    Abstract: The invention provides a process for preparing bromine-containing polymers, comprising a Friedel-Crafts alkylation reaction of pentabromobenzyl halide with a polymer reactant which contains one or more six-membered aromatic ring(s) in its repeat unit, in the presence of at least one Friedel-Crafts catalyst. The so-formed bromine-containing polymers, having pendent —CH2C6Br5 groups attached to at least a portion of the six-membered aromatic rings of the polymer, with a carbon ring atom of said six-membered aromatic ring being bonded to the aliphatic carbon of said —CH2C6Br5 pendent group, are also provided. These bromine-containing polymers are useful as flame retarding agents.
    Type: Application
    Filed: July 7, 2015
    Publication date: May 25, 2017
    Inventors: Mark Gelmont, Michael Yuzefovich, David Yoffe, Renata Yelizarov, Ron Frim, Lior Melamed