Patents by Inventor Anna MESZYNSKA

Anna MESZYNSKA 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: 9834642
    Abstract: Synthesizing poly(alkoxyamine amide)s, which have a monomer chain with at least one thermolabile bond between monomers from an acid monomer of a monohalogenated carboxylic acid X—C(R,R?)—Y—COOH and an amine monomer having a free terminal free-radical nitroxide group >N—O? and a free terminal primary amine —NH2. The synthesis involves two separate and chemically selective chemical reactions. One reacts the —COOH and —NH2 groups to obtain an amide bond —NH—CO—Y—C(R, R?)—, and the other reacts the —Y—C(R, R?)? free-radical with the nitroxide function >N—O? in order to obtain an alkoxyamine bond —Y—C(R, R?)—O—N<. The chemical reactions are performed in alternating fashion with catalysts and a novel halogenated acid monomer X—C(R,R?)—Y—COOH or a novel free-radical amine monomer having a free terminal group >N—O? and a free terminal primary amine —NH2, until a complete copolymer chain is obtained. Also the polymers obtained and the uses thereof.
    Type: Grant
    Filed: August 29, 2014
    Date of Patent: December 5, 2017
    Assignee: CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE
    Inventors: Jean-Francois Lutz, Anna Meszynska
  • Publication number: 20160222162
    Abstract: Synthesizing poly(alkoxyamine amide)s, which have a monomer chain with at least one thermolabile bond between monomers from an acid monomer of a monohalogenated carboxylic acid X—C(R,R?)—Y—COOH and an amine monomer having a free terminal free-radical nitroxide group >N—O? and a free terminal primary amine —NH2. The synthesis involves two separate and chemically selective chemical reactions. One reacts the —COOH and —NH2 groups to obtain an amide bond —NH—CO—Y—C(R, R?)—, and the other reacts the —Y—C(R, R?)? free-radical with the nitroxide function >N—O? in order to obtain an alkoxyamine bond —Y—C(R, R?)—O—N<. The chemical reactions are performed in alternating fashion with catalysts and a novel halogenated acid monomer X—C(R,R?)—Y—COOH or a novel free-radical amine monomer having a free terminal group >N—O? and a free terminal primary amine —NH2, until a complete copolymer chain is obtained. Also the polymers obtained and the uses thereof.
    Type: Application
    Filed: August 29, 2014
    Publication date: August 4, 2016
    Inventors: Jean-Francois LUTZ, Anna MESZYNSKA