Patents by Inventor Damien S. Guironnet

Damien S. Guironnet 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: 11472916
    Abstract: Shape, size and composition are nature's most fundamental design features, enabling highly complex functionalities. Despite recent advances, the independent control of shape, size and chemistry of macromolecules remains a synthetic challenge. Herein reported is a scalable methodology to produce large well-defined macromolecules with programmable shape, size and chemistry that combines reactor engineering principles and controlled polymerizations. Specifically, bottlebrush polymers with conical, ellipsoidal and concave architectures are synthesized using two orthogonal polymerizations. The chemical versatility is highlighted by the synthesis of a compositional asymmetric cone. The strong agreement between predictions and experiments validate the precision that this methodology offers.
    Type: Grant
    Filed: December 11, 2018
    Date of Patent: October 18, 2022
    Assignee: The Board of Trustees of the University of Illinois
    Inventors: Damien S. Guironnet, Dylan J. Walsh
  • Patent number: 11407855
    Abstract: We have developed a ring opening polymerization method in an aqueous dispersion for the formation of latex. By encapsulating a catalyst in micelles dispersed in water, a seeded catalytic polymerization of various monomers in water was successfully performed. An amphiphilic molecule was used to form a micelle with a hydrophobic core in water. The catalyst that was encapsulated within this structure and the formed microcapsules were used as microreactors for the formation of biodegradable elastomers.
    Type: Grant
    Filed: August 19, 2020
    Date of Patent: August 9, 2022
    Assignee: The Board of Trustees of the University of Illinois
    Inventors: Damien S. Guironnet, Danielle Harrier, Paul Kenis
  • Publication number: 20210054139
    Abstract: We have developed a ring opening polymerization method in an aqueous dispersion for the formation of latex. By encapsulating a catalyst in micelles dispersed in water, a seeded catalytic polymerization of various monomers in water was successfully performed. An amphiphilic molecule was used to form a micelle with a hydrophobic core in water. The catalyst that was encapsulated within this structure and the formed microcapsules were used as microreactors for the formation of biodegradable elastomers.
    Type: Application
    Filed: August 19, 2020
    Publication date: February 25, 2021
    Applicant: The Board of Trustees of the University of Illinois
    Inventors: Damien S. Guironnet, Danielle Harrier, Paul Kenis
  • Publication number: 20200407488
    Abstract: Shape, size and composition are nature's most fundamental design features, enabling highly complex functionalities. Despite recent advances, the independent control of shape, size and chemistry of macromolecules remains a synthetic challenge. Herein reported is a scalable methodology to produce large well-defined macromolecules with programmable shape, size and chemistry that combines reactor engineering principles and controlled polymerizations. Specifically, bottlebrush polymers with conical, ellipsoidal and concave architectures are synthesized using two orthogonal polymerizations. The chemical versatility is highlighted by the synthesis of a compositional asymmetric cone. The strong agreement between predictions and experiments validate the precision that this methodology offers.
    Type: Application
    Filed: December 11, 2018
    Publication date: December 31, 2020
    Applicant: The Board of Trustees of the University of Illinois
    Inventors: Damien S. GUIRONNET, Dylan J WALSH
  • Patent number: 10414903
    Abstract: A strategy for the synthesis of semi-telechelic polyethylene through the palladium diimine-catalyzed chain transfer polymerization of ethylene using various silanes as chain transfer agents is reported. Polymer molecular weight and end-group chemical structure can be tuned by varying the chain transfer agent as well as its concentration. NMR spectroscopy confirms that the silicon of the chain transfer agent is incorporated into the polymer. The stability of the catalyst toward polar monomer enables the chain transfer polymerization of semi-telechelic poly(ethylene-methyl acrylate) copolymers.
    Type: Grant
    Filed: November 10, 2017
    Date of Patent: September 17, 2019
    Assignee: The Board of Trustees of the University of Illinois
    Inventors: Damien S. Guironnet, Michael G. Hyatt, Dylan J. Walsh
  • Patent number: 10370521
    Abstract: A methodology is described for the synthesis of polyolefin containing block-copolymers using a catalytic postpolymerization modification strategy. Common polyolefin grades may be converted into macroinitiators using a cross-metathesis reaction. The functionalized polyolefins may then be used to initiate living: coordinative ring opening polymerization of cyclic ester monomer, anionic ring opening polymerization of epoxide monomer, and radical polymerization of vinylic monomer, to yield the corresponding block copolymers.
    Type: Grant
    Filed: November 10, 2017
    Date of Patent: August 6, 2019
    Assignee: The Board of Trustees of the University of Illinois
    Inventors: Damien S. Guironnet, Dylan J. Walsh
  • Publication number: 20180134833
    Abstract: A methodology is described for the synthesis of polyolefin containing block-copolymers using a catalytic postpolymerization modification strategy. Common polyolefin grades may be converted into macroinitiators using a cross-metathesis reaction. The functionalized polyolefins may then be used to initiate living: coordinative ring opening polymerization of cyclic ester monomer, anionic ring opening polymerization of epoxide monomer, and radical polymerization of vinylic monomer, to yield the corresponding block copolymers.
    Type: Application
    Filed: November 10, 2017
    Publication date: May 17, 2018
    Applicant: The Board of Trustees of the University of Illinois
    Inventors: Damien S. Guironnet, Dylan J. Walsh
  • Publication number: 20180134873
    Abstract: A strategy for the synthesis of semi-telechelic polyethylene through the palladium diimine-catalyzed chain transfer polymerization of ethylene using various silanes as chain transfer agents is reported. Polymer molecular weight and end-group chemical structure can be tuned by varying the chain transfer agent as well as its concentration. NMR spectroscopy confirms that the silicon of the chain transfer agent is incorporated into the polymer. The stability of the catalyst toward polar monomer enables the chain transfer polymerization of semi-telechelic poly(ethylene-methyl acrylate) copolymers.
    Type: Application
    Filed: November 10, 2017
    Publication date: May 17, 2018
    Applicant: The Board of Trustees of the University of Illinois
    Inventors: Damien S. GUIRONNET, Michael G. HYATT, Dylan J. WALSH