Patents by Inventor Chaoxiong MA

Chaoxiong MA 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).

  • Publication number: 20230312819
    Abstract: A water dispersible sulfopolyester is provided wherein the sulfopolyester comprises: (a) residues of one or more dicarboxylic acids; (b) at least 4 mole percent and less than 8.5 mole percent of residues of at least one sulfomonomer; and (c) residues of one or more diols, wherein the sulfopolyester comprises a carboxylate ends to acid ends ratio of at least 0.6, wherein the sulfopolyester contains substantially equimolar proportions of acid moiety repeating units (100 mole percent) to hydroxy moiety repeating units (100 mole percent), and wherein all stated mole percentages are based on the total of all acid and hydroxy moiety repeating units being equal to 200 mole percent. Processes for producing the sulfopolyester are also provided as well as articles comprising the sulfopolyester.
    Type: Application
    Filed: August 5, 2021
    Publication date: October 5, 2023
    Applicant: Eastman Chemical Company
    Inventors: Scott Ellery George, Joshua Seth Cannon, Kevin Leonard Urman, Chaoxiong Ma
  • Publication number: 20220298298
    Abstract: The present disclosure provides a process of recovering sulfopolyester comprising reduced impurity. Sulfopolyester is recovered from a composite material comprising water-dispersible sulfopolyester polymer and at least one non-water-dispersible polymer. The process includes washing the composite material comprising water-dispersible sulfopolyester with a solvent composition. The recovered sulfopolyester can be generated as a concentrated aqueous dispersion, a polymer melt, or a sulfopolyester solid.
    Type: Application
    Filed: August 7, 2020
    Publication date: September 22, 2022
    Applicant: Eastman Chemical Company
    Inventors: Kenny Randolph Parker, Scott Ellery George, Charles Stuart Everett, Kevin Leonard Urman, Joshua Seth Cannon, Weijun Kevin Wang, Chaoxiong Ma
  • Publication number: 20220297352
    Abstract: The present disclosure provides a process of recovering sulfopolyester comprising reduced impurity. Sulfopolyester is recovered from a composite material comprising water-dispersible sulfopolyester polymer and at least one non-water-dispersible polymer. The process includes washing the composite material comprising water-dispersible sulfopolyester with a solvent composition. The recovered sulfopolyester can be generated as a concentrated aqueous dispersion, a polymer melt, or a sulfopolyester solid.
    Type: Application
    Filed: August 7, 2020
    Publication date: September 22, 2022
    Applicant: Eastman Chemical Company
    Inventors: Kenny Randolph Parker, Scott Ellery George, Charles Stuart Everett, Kevin Leonard Urman, Joshua Seth Cannon, Weijun Kevin Wang, Chaoxiong Ma
  • Patent number: 10908094
    Abstract: The described BPE-enabled device includes two separated chambers which perform detection and reporting independently. Analytical reaction of a target molecule in the analytical cell is coupled to and monitored by an electrochromic reaction in the reporting cell. The color change in the reporting cell can be determined spectrophotometrically by RGB analysis of a CCD image acquired via smartphone. This detection method provides a linear response and a low limit of detection due to the redox cycling behavior in both chambers. The BPE based electrochromic detector can be modified for sensing of multiple analytes by integrating three or more sets of detection chemistries into one single device. Multiple analytes with different concentrations can be detected within this device simultaneously.
    Type: Grant
    Filed: August 11, 2017
    Date of Patent: February 2, 2021
    Assignee: University of Notre Dame du Lac
    Inventors: Paul W. Bohn, Wei Xu, Kaiyu Fu, Chaoxiong Ma
  • Publication number: 20190178807
    Abstract: The described BPE-enabled device includes two separated chambers which perform detection and reporting independently. Analytical reaction of a target molecule in the analytical cell is coupled to and monitored by an electrochromic reaction in the reporting cell. The color change in the reporting cell can be determined spectrophotometrically by RGB analysis of a CCD image acquired via smartphone. This detection method provides a linear response and a low limit of detection due to the redox cycling behavior in both chambers. The BPE based electrochromic detector can be modified for sensing of multiple analytes by integrating three or more sets of detection chemistries into one single device. Multiple analytes with different concentrations can be detected within this device simultaneously.
    Type: Application
    Filed: August 11, 2017
    Publication date: June 13, 2019
    Applicant: University of Notre Dame du Lac
    Inventors: Paul W. BOHN, Wei XU, Kaiyu FU, Chaoxiong MA