Patents by Inventor Francisco J. Alvaro Archundia

Francisco J. Alvaro Archundia 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).

  • Chemical depletion process to substantially remove residual monomers in emulsion polimerization processes
    Patent number: 5886140
    Abstract: A process has been developed to substantially reduce the residual monomer resulting at the end of the emulsion polymerization reaction. The process consists in submitting the latex to a redox process after the polymerization reaction. The recommended environment consists of vinyl monomers and/or conjugated dienes homo or copolymer that has a residual monomer content not in excess of 100,000 ppm at the end of the reaction. After the chemical depletion, residual monomer contents of 50 to 1000 ppm are achieved in a process that lasts from 0.5 to 5 hours at most.
    Type: Grant
    Filed: January 30, 1997
    Date of Patent: March 23, 1999
    Assignee: Centro De Investigacion Y Desarollo Technologico S.A. de C.V.
    Inventors: Margarito Albarran Olivares, Francisco J. Alvaro Archundia, Francisco Lopez Serrano Ramos