Patents by Inventor Wenhe GUO

Wenhe GUO 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).

  • AQUEOUS POLYURETHANE EMULSION FOR ULTRA-THIN POLYURETHANE CONDOM WITH LOW MODULUS AND HIGH STRENGTH, AND PREPARATION METHOD THEREFOR
    Publication number: 20230029922
    Abstract: Provided are a waterborne polyurethane emulsion for ultra-thin polyurethane condoms having a low modulus and a high strength, and a method for preparing the emulsion, wherein the waterborne polyurethane emulsion comprises 15 to 18 parts by mass of a macromolecular diol, 4 to 6 parts by mass of a diisocyanate, 0.6 to 0.9 parts by mass of a hydrophilic chain extender, 0.4 to 0.8 parts by mass of a small-molecule chain extender, and the like. The prepared waterborne polyurethane emulsion is characterized by a low modulus, a high strength, and high resilience.
    Type: Application
    Filed: December 17, 2020
    Publication date: February 2, 2023
    Inventors: Weihu LI, Wenhe GUO, Baoling ZHU, Fei WANG, Jiabing DAI