Patents by Inventor Wenfeng DUAN

Wenfeng DUAN 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: 20240309190
    Abstract: The present invention provides a modified cross-linked polyethylene and a preparation method therefor, and a recycled product and a preparation method therefor. The preparation method for the modified cross-linked polyethylene includes: milling waste cross-linked polyethylene by using a solid-phase force chemical reactor, and then using asphalt as a plasticizer for plasticization to obtain the modified cross-linked polyethylene. The plasticization treatment enables the decross-linked waste cross-linked polyethylene/asphalt material obtained after milling to have excellent processing fluidity, and thus, the decross-linked waste cross-linked polyethylene/asphalt material is suitable for preparing high-performance recycled products in various thermoplastic processing processes.
    Type: Application
    Filed: January 12, 2022
    Publication date: September 19, 2024
    Inventors: Shibing BAI, Yi LIAO, Wenfeng DUAN, Shuangxin LAI, Shuangqiao YANG, Hongmei DING, Ning TAN, Yuqin XIONG, Yingchun WANG
  • Patent number: 10487215
    Abstract: The present invention provides a polyacrylic acid copolymer emulsion, an organic-inorganic composite waterproof coating, preparation method thereof, and a waterproof coiled material. It can solve the problem that the granules dropping out from the prior waterproof membrane easily. The organic-inorganic composite waterproof coating according to the invention is prepared by compositing organic granules and inorganic granules, wherein the organic coating locks the inorganic granules, and prevents the inorganic granules from dropping out. Some exposed inorganic granules take part in the cement hydration reaction, and increase the bonding strength with the post-poured concrete. Furthermore, the organic-inorganic composite waterproof coating according to the invention does not need a buttering. It can reduce waste without an adhesive-resist insulation film/paper.
    Type: Grant
    Filed: December 1, 2015
    Date of Patent: November 26, 2019
    Assignee: Beijing Oriental Yuhong Waterproof Technology Co., Ltd.
    Inventors: Yuqin Xiong, Enshun Xu, Weiguo Li, Wenfeng Duan
  • Publication number: 20180030283
    Abstract: The present invention provides a polyacrylic acid copolymer emulsion, an organic-inorganic composite waterproof coating, preparation method thereof, and a waterproof coiled material. It can solve the problem that the granules dropping out from the prior waterproof membrane easily. The organic-inorganic composite waterproof coating according to the invention is prepared by compositing organic granules and inorganic granules, wherein the organic coating locks the inorganic granules, and prevents the inorganic granules from dropping out. Some exposed inorganic granules take part in the cement hydration reaction, and increase the bonding strength with the post-poured concrete. Furthermore, the organic-inorganic composite waterproof coating according to the invention does not need a buttering. It can reduce waste without an adhesive-resist insulation film/paper.
    Type: Application
    Filed: December 1, 2015
    Publication date: February 1, 2018
    Applicant: Beijing Oriental Yuhong Waterproof Technologies Co., Ltd.
    Inventors: Yuqin XIONG, Enshun XU, Weiguo LI, Wenfeng DUAN