Patents Assigned to Itaconix Corporation
  • Patent number: 11866677
    Abstract: The present invention relates to copolymer formulations of poly(itaconic acid-co-2-acrylamido-2-methylpropane sulfonic acid) for dishwasher detergent compositions with a controlled amount of a second polymeric component.
    Type: Grant
    Filed: February 3, 2021
    Date of Patent: January 9, 2024
    Assignee: ITACONIX CORPORATION
    Inventors: James William Gordon, Bo Jiang, Yvon Durant, John Shaw
  • Patent number: 11814475
    Abstract: A monomer mixture containing asymmetric and symmetric esters of itaconic acid which can be used as a reactive diluent. In addition, copolymers resulting from the polymerization of such monomer mixture. The monomer mixture more specifically includes the asymmetric monomers methyl ethyl itaconate (MEI) and ethyl methyl itaconate (EMI) and the symmetric monomers dimethyl itaconate (DMI) and diethyl itaconate (DEI).
    Type: Grant
    Filed: December 9, 2021
    Date of Patent: November 14, 2023
    Assignee: ITACONIX CORPORATION
    Inventors: Yvon Durant, Madeleine Eleanor Anderson
  • Patent number: 10738139
    Abstract: The present invention is directed at the decarboxylation and amidation of polyitaconic acid polymers. The polymers formed have useful dispersion properties and are suitable for use in the prevention of scaling.
    Type: Grant
    Filed: December 18, 2018
    Date of Patent: August 11, 2020
    Assignee: Itaconix Corporation
    Inventors: Yvon Durant, Bo Jiang, Melanie Hughes, Timothy Mills
  • Patent number: 10472594
    Abstract: The present invention relates to a mixture of sulfonated copolymers for detergent compositions which mixture of copolymers offer chelating capability as well as the ability to remain soluble in aqueous environments.
    Type: Grant
    Filed: April 11, 2017
    Date of Patent: November 12, 2019
    Assignee: Itaconix Corporation
    Inventors: Bo Jiang, Yvon Durant, John Shaw
  • Patent number: 10273176
    Abstract: The present invention relates to partial decarboxylation of polyitaconic acid polymers or copolymers. The partially decarboxylated resins are suitable for use in preparation of dispersions as well as for anti-scaling applications.
    Type: Grant
    Filed: October 4, 2016
    Date of Patent: April 30, 2019
    Assignee: Itaconix Corporation
    Inventors: Yvon Durant, Brian Luthi, John Shaw
  • Patent number: 9932421
    Abstract: The present disclosure relates to a method for the emulsion polymerization of itaconic acid containing ester functionality, for example, the alkyl esters of itaconic acid known as alkylitaconate. More specifically, an ester of polyitaconic acid polymer is produced via emulsion polymerization and contains greater than 50% by weight of an ester of itaconic acid along with a selected particle size and levels of molecular weight and syndiotactacticity.
    Type: Grant
    Filed: May 11, 2016
    Date of Patent: April 3, 2018
    Assignee: Itaconix Corporation
    Inventors: Yvon Durant, Bo Jiang, John Tsavalas
  • Patent number: 9790395
    Abstract: The present invention relates to soluble aqueous compositions comprising metal salts of selected polyitaconic acid (PIA) resins.
    Type: Grant
    Filed: March 11, 2016
    Date of Patent: October 17, 2017
    Assignee: Itaconix Corporation
    Inventors: Martin Vince, Anita Augustyniak, Yvon Durant, John Shaw
  • Patent number: 9487423
    Abstract: The present invention relates to partial decarboxylation of polyitaconic acid polymers or copolymers. The partially decarboxylated resins are suitable for use in preparation of dispersions as well as for anti-scaling applications.
    Type: Grant
    Filed: September 16, 2015
    Date of Patent: November 8, 2016
    Assignee: Itaconix Corporation
    Inventors: Yvon Durant, Brian Luthi, John Shaw
  • Patent number: 9284446
    Abstract: The present invention relates to soluble aqueous compositions comprising metal salts of selected polyitaconic acid (PIA) resins.
    Type: Grant
    Filed: December 24, 2014
    Date of Patent: March 15, 2016
    Assignee: Itaconix Corporation
    Inventors: Martin Vince, Anita Augustyniak, Yvon Durant, John Shaw
  • Patent number: 8802404
    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: Grant
    Filed: April 6, 2011
    Date of Patent: August 12, 2014
    Assignees: University of New Hampshire, Itaconix Corporation
    Inventors: Jennifer Durant, Yvon Durant, John Shaw
  • 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