Patents by Inventor Fenping WANG

Fenping WANG 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).

  • Method for synthesizing polymer/pigment hybrid latex through sulfur-free and soap-free in-situ reversible addition-fragmentation chain transfer (RAFT) emulsion copolymerization
    Patent number: 12122920
    Abstract: A method for synthesizing a polymer/pigment hybrid latex through sulfur-free and soap-free in-situ reversible addition-fragmentation chain transfer (RAFT) emulsion copolymerization includes the following: dispersing a pigment with a reactive emulsifier to prepare a pigment dispersion; synthesizing an amphiphilic sulfur-free ?-vinyl-terminated polymethyl methacrylate (PMMA) macromolecular RAFT agent in-situ on a surface of pigment particles through catalytic chain transfer polymerization (CCTP); and adding an acrylate monomer dropwise, allowing in-situ sulfur-free RAFT polymerization on a surface of pigment particles through the RAFT agent, and adjusting a structure and a composition of an encapsulated polymer layer to obtain a series of uniformly encapsulated and stably dispersed polymer/organic pigment hybrid latexes.
    Type: Grant
    Filed: September 8, 2021
    Date of Patent: October 22, 2024
    Assignee: ZHEJIANG SCI-TECH UNIVERSITY
    Inventors: Dongming Qi, Fenping Wang, Jiawei Li, Lei Zhao, Guiping He
  • METHOD FOR SYNTHESIZING POLYMER/PIGMENT HYBRID LATEX THROUGH SULFUR-FREE AND SOAP-FREE IN-SITU REVERSIBLE ADDITION-FRAGMENTATION CHAIN TRANSFER (RAFT) EMULSION COPOLYMERIZATION
    Publication number: 20220081568
    Abstract: A method for synthesizing a polymer/pigment hybrid latex through sulfur-free and soap-free in-situ reversible addition-fragmentation chain transfer (RAFT) emulsion copolymerization includes the following: dispersing a pigment with a reactive emulsifier to prepare a pigment dispersion; synthesizing an amphiphilic sulfur-free ?-vinyl-terminated polymethyl methacrylate (PMMA) macromolecular RAFT agent in-situ on a surface of pigment particles through catalytic chain transfer polymerization (CCTP); and adding an acrylate monomer dropwise, allowing in-situ sulfur-free RAFT polymerization on a surface of pigment particles through the RAFT agent, and adjusting a structure and a composition of an encapsulated polymer layer to obtain a series of uniformly encapsulated and stably dispersed polymer/organic pigment hybrid latexes.
    Type: Application
    Filed: September 8, 2021
    Publication date: March 17, 2022
    Applicant: ZHEJIANG SCI-TECH UNIVERSITY
    Inventors: Dongming QI, Fenping WANG, Jiawei LI, Lei ZHAO, Guiping HE