Patents by Inventor Leandro Estrada

Leandro Estrada 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: 9790326
    Abstract: A method for preparing a conjugated polymer involves a DHAP polymerization of a 3,4-dioxythiophene, 3,4-dioxyfuran, or 3,4-dioxypyrrole and, optionally, at least one second conjugated monomer in the presence of a Pd or Ni comprising catalyst, an aprotic solvent, a carboxylic acid at a temperature in excess of 120° C. At least one of the monomers is substituted with hydrogen reactive functionalities and at least one of the monomers is substituted with a Cl, Br, and/or I. The polymerization can be carried out at temperature of 140° C. or more, and the DHAP polymerization can be carried out without a phosphine ligand or a phase transfer agent. The resulting polymer can display dispersity less than 2 and have a degree of polymerization in excess of 10.
    Type: Grant
    Filed: June 18, 2014
    Date of Patent: October 17, 2017
    Assignees: UNIVERSITY OF FLORIDA RESEARCH FOUNDATION, INC., GEORGIA TECH RESEARCH CORPORATION
    Inventors: John R. Reynolds, Leandro Estrada, James Deininger, Frank Antonio Arroyave-Mondragon
  • Publication number: 20160122476
    Abstract: A method for preparing a conjugated polymer involves a DHAP polymerization of a 3,4-dioxythiophene, 3,4-dioxyfuran, or 3,4-dioxypyrrole and, optionally, at least one second conjugated monomer in the presence of a Pd or Ni comprising catalyst, an aprotic solvent, a carboxylic acid at a temperature in excess of 120° C. At least one of the monomers is substituted with hydrogen reactive functionalities and at least one of the monomers is substituted with a Cl, Br, and/or I. The polymerization can be carried out at temperature of 140° C. or more, and the DHAP polymerization can be carried out without a phosphine ligand or a phase transfer agent. The resulting polymer can display dispersity less than 2 and have a degree of polymerization in excess of 10.
    Type: Application
    Filed: June 18, 2014
    Publication date: May 5, 2016
    Inventors: John R. Reynolds, Leandro Estrada, James Deininger, Frank Antonio Arroyave-Mondragon