Patents by Inventor Yvon Durant

Yvon Durant 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).

  • Regulated and continuous polymerization of polycarboxylic acid polymers
    Patent number: 8420758
    Abstract: The present invention relates to methods and polymers based upon vinyl type monomers that contain pendant carboxylic acid groups and ester group functionality. The polymerization methods include regulation of heat flow such that parameters of monomer conversion, acid functionality, molecular weight, tacticity and/or copolymer composition may be adjusted to selected levels for a selected application.
    Type: Grant
    Filed: March 11, 2010
    Date of Patent: April 16, 2013
    Assignee: Itaconix Corporation
    Inventors: Yvon Durant, John Shaw
  • Emulsion polymerization of esters of itaconic acid
    Patent number: 8410232
    Abstract: Esters of itaconic acid are polymerized in aqueous medium in the presence of seed particles. The seed particles may absorb the monomer and provide for polymerization to a desired particle size. The polymers that are produced may be employed in adhesives, paints, and paper formulations.
    Type: Grant
    Filed: December 16, 2010
    Date of Patent: April 2, 2013
    Assignee: University of New Hampshire
    Inventor: Yvon Durant
  • VINYL ACID MONOMER RECOVERY
    Publication number: 20120258510
    Abstract: The present disclosure relates to a method for recovering a vinyl acid monomer by providing an aqueous fermentation broth which undergoes microbial fermentation of a nutrient medium containing a carbon source including at least one microorganism to produce a vinyl acid monomer. The method provides a direct overall route to bio-based polymers of the vinyl acid monomer, and in particular, polymers of polyitaconic acid.
    Type: Application
    Filed: April 6, 2011
    Publication date: October 11, 2012
    Applicants: ITACONIX, LLC, UNIVERSITY OF NEW HAMPSHIRE
    Inventors: Jennifer DURANT, Yvon DURANT, John SHAW
  • Polycarboxylic acid polymers
    Patent number: 8227560
    Abstract: The present invention relates to methods and polymers based upon vinyl type monomers that contain pendant carboxylic acid groups and ester group functionality. The polymers may be prepared under selected conditions of partial neutralization to provide relatively high conversions and/or relatively high values of molecular weight and/or selected amounts of repeating unit tacticity.
    Type: Grant
    Filed: March 8, 2011
    Date of Patent: July 24, 2012
    Assignee: University of New Hampshire
    Inventors: Yvon Durant, Ming Cao, Mathieu Chirat
  • REGULATED AND CONTINUOUS POLYMERIZATION OF POLYCARBOXYLIC ACID POLYMERS
    Publication number: 20110224393
    Abstract: The present invention relates to methods and polymers based upon vinyl type monomers that contain pendant carboxylic acid groups and ester group functionality. The polymerization methods include regulation of heat flow such that parameters of monomer conversion, acid functionality, molecular weight, tacticity and/or copolymer composition may be adjusted to selected levels for a selected application.
    Type: Application
    Filed: March 11, 2010
    Publication date: September 15, 2011
    Inventors: Yvon DURANT, John SHAW
  • Polycarboxylic Acid Polymers
    Publication number: 20110166310
    Abstract: The present invention relates to methods and polymers based upon vinyl type monomers that contain pendant carboxylic acid groups and ester group functionality. The polymers may be prepared under selected conditions of partial neutralization to provide relatively high conversions and/or relatively high values of molecular weight and/or selected amounts of repeating unit tacticity.
    Type: Application
    Filed: March 8, 2011
    Publication date: July 7, 2011
    Applicant: UNIVERSITY OF NEW HAMPSHIRE
    Inventors: Yvon DURANT, Ming CAO, Mathieu CHIRAT
  • Emulsion Polymerization Of Esters Of Itaconic Acid
    Publication number: 20110144265
    Abstract: Esters of itaconic acid are polymerized in aqueous medium in the presence of seed particles. The seed particles may absorb the monomer and provide for polymerization to a desired particle size. The polymers that are produced may be employed in adhesives, paints, and paper formulations.
    Type: Application
    Filed: December 16, 2010
    Publication date: June 16, 2011
    Inventor: Yvon DURANT
  • Absorbing materials containing polycarboxylic acid polymers
    Patent number: 7915365
    Abstract: The present invention relates to methods of forming absorbent materials and polymers used in absorbent materials, which are based upon vinyl type monomers that contain pendant carboxylic acid groups and ester group functionality. The polymers may be prepared under selected conditions of partial neutralization to provide relatively high conversions and/or relatively high values of molecular weight and/or selected amounts of repeating unit tacticity. The polymers may then be used in absorbing materials.
    Type: Grant
    Filed: September 30, 2009
    Date of Patent: March 29, 2011
    Assignee: University of New Hampshire
    Inventors: Yvon Durant, Ming Cao, Mathieu Chirat
  • Polycarboxylic acid polymers
    Patent number: 7910676
    Abstract: The present invention relates to methods and polymers based upon vinyl type monomers that contain pendant carboxylic acid groups and ester group functionality. The polymers may be prepared under selected conditions of partial neutralization to provide relatively high conversions and/or relatively high values of molecular weight and/or selected amounts of repeating unit tacticity.
    Type: Grant
    Filed: May 7, 2009
    Date of Patent: March 22, 2011
    Assignee: University of New Hampshire
    Inventors: Yvon Durant, Ming Cao, Mathieu Chirat
  • Detergents containing polycarboxylic acid polymers
    Patent number: 7910677
    Abstract: The present invention relates to methods and polymers based upon vinyl type monomers that contain pendant carboxylic acid groups and ester group functionality. The polymers may be prepared under selected conditions of partial neutralization to provide relatively high conversions and/or relatively high values of molecular weight and/or selected amounts of repeating unit tacticity. The polymers may then be used in detergent formulations.
    Type: Grant
    Filed: September 30, 2009
    Date of Patent: March 22, 2011
    Assignee: University of New Hampshire
    Inventors: Yvon Durant, Ming Cao, Mathieu Chirat
  • Detergents Containing Polycarboxylic Acid Polymers
    Publication number: 20100022436
    Abstract: The present invention relates to methods and polymers based upon vinyl type monomers that contain pendant carboxylic acid groups and ester group functionality. The polymers may be prepared under selected conditions of partial neutralization to provide relatively high conversions and/or relatively high values of molecular weight and/or selected amounts of repeating unit tacticity. The polymers may then be used in detergent formulations.
    Type: Application
    Filed: September 30, 2009
    Publication date: January 28, 2010
    Applicant: UNIVERSITY OF NEW HAMPSHIRE
    Inventors: Yvon DURANT, Ming CAO, Mathieu CHIRAT
  • Absorbing Materials Containing Polycarboxylic Acid Polymers
    Publication number: 20100016153
    Abstract: The present invention relates to methods of forming absorbent materials and polymers used in absorbent materials, which are based upon vinyl type monomers that contain pendant carboxylic acid groups and ester group functionality. The polymers may be prepared under selected conditions of partial neutralization to provide relatively high conversions and/or relatively high values of molecular weight and/or selected amounts of repeating unit tacticity. The polymers may then be used in absorbing materials.
    Type: Application
    Filed: September 30, 2009
    Publication date: January 21, 2010
    Applicant: UNIVERSITY OF NEW HAMPSHIRE
    Inventors: Yvon DURANT, Ming CAO, Mathieu CHIRAT
  • POLYCARBOXYLIC ACID POLYMERS
    Publication number: 20090286947
    Abstract: The present invention relates to methods and polymers based upon vinyl type monomers that contain pendant carboxylic acid groups and ester group functionality. The polymers may be prepared under selected conditions of partial neutralization to provide relatively high conversions and/or relatively high values of molecular weight and/or selected amounts of repeating unit tacticity.
    Type: Application
    Filed: May 7, 2009
    Publication date: November 19, 2009
    Applicant: University of New Hampshire
    Inventors: Yvon DURANT, Ming CAO, Mathieu CHIRAT
  • Stable N-oxly radical assisted emulsion polymerization under pressure
    Patent number: 6696533
    Abstract: A process of free-radically initiated aqueous emulsion polymerization, in which monomers are polymerized in the presence of a N-oxyl radical and by means of special free-radical polymerization initiators at more than 100° C. and at pressures above the vapor pressure of the polymerization mixture.
    Type: Grant
    Filed: December 27, 1999
    Date of Patent: February 24, 2004
    Assignee: BASF Aktiengesellschaft
    Inventors: Michael Fischer, Bradley Ronald Morrison, Heinz Friedrich Sutoris, Yvon Durant
  • Stable N-oxyl radial assisted mini emulsion polymerization
    Patent number: 6503983
    Abstract: A process of free-radically initiated aqueous emulsion polymerization, in which polymerization is conducted in the presence of a stable N-oxyl radical and the diameter of the monomer droplets in disperse distribution in the aqueous medium is ≦500 nm.
    Type: Grant
    Filed: December 27, 1999
    Date of Patent: January 7, 2003
    Assignee: BASF Aktiengesellschaft
    Inventors: Bradley Ronald Morrison, Klemens Mathauer, Michael Fischer, Yvon Durant