Patents by Inventor Chaowei Feng

Chaowei Feng 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).

  • COMPOSITION AND METHOD FOR INHIBITING THE FORMATION AND GROWITH OF POPCORN POLYMERS
    Publication number: 20240158611
    Abstract: A method of minimizing popcorn polymer seed formation, the method adding a treatment composition to a monomer containing system. A method for inhibiting popcorn polymer growth, the method adding a treatment composition to a monomer containing system, wherein the treatment composition comprises a quinone methide, a quinone methide derivative, or a quinone methide analogue based compound, and wherein the system comprises popcorn seed or polymer.
    Type: Application
    Filed: February 21, 2022
    Publication date: May 16, 2024
    Inventors: Joop DEES, Jens MAGGEN, Chaowei FENG, Bryan CROM, David HOOD
  • MONITORING AND CONTROL OF UNWANTED POLYMER BY-PRODUCT GENERATED IN MONOMERS PRODUCTION, STORAGE, AND HANDLING USING INFRARED SPECTROSCOPY ANALYSIS
    Publication number: 20240060884
    Abstract: A method for monitoring and controlling unwanted polymer byproduct generated in a monomer production, storage, or handling process, for example polystyrene in a styrene production process, is described. The method comprises receiving a sample (115) taken during a monomer production process by a Fourier-Transform infrared spectrometer (120), performing an infrared spectroscopy analysis on the sample to generate spectral data (122) by the Fourier-Transform infrared spectrometer, and determining a percentage (119) of at least one polymer in the sample by mathematical correlative processing of the spectral data by a computing device (110).
    Type: Application
    Filed: December 21, 2021
    Publication date: February 22, 2024
    Inventors: Chaowei Feng, Eric Le, Bryan Crom, Nimeshkumar Patel
  • Process for preparing high melt strength polypropylene
    Patent number: 11117995
    Abstract: The present invention relates to a polypropylene composition comprising a long chain branched polymer having high melt strength. The process for preparing the corresponding polypropylene having composition is provided comprising blending a propylene base polymer with a unsaturated polyfunctional poly(alkylsiloxane), a polyfunctional acrylate coagent, an initiator, additives such as stabilizer, acid neutralizer and antioxidants, and reactive extruding the blend to form a branched polymer composition bridged by siloxane units.
    Type: Grant
    Filed: August 23, 2018
    Date of Patent: September 14, 2021
    Assignee: Formosa Plastics Corporation, U.S.A.
    Inventors: Chaowei Feng, Ming-Yung Lee, Honglan Lu
  • Process for Preparing High Melt Strength Polypropylene
    Publication number: 20200062880
    Abstract: The present invention relates to a polypropylene composition comprising a long chain branched polymer having high melt strength. The process for preparing the corresponding polypropylene having composition is provided comprising blending a propylene base polymer with a unsaturated polyfunctional poly(alkylsiloxane), a polyfunctional acrylate coagent, an initiator, additives such as stabilizer, acid neutralizer and antioxidants, and reactive extruding the blend to form a branched polymer composition bridged by siloxane units.
    Type: Application
    Filed: August 23, 2018
    Publication date: February 27, 2020
    Inventors: Chaowei Feng, Ming-Yung Lee, Honglan Lu