Patents Assigned to DESHI ENERGY TECHNOLOGY GROUP CO., LTD.
  • Preparation method for fumaric acid pour point depressant for crude oil
    Patent number: 11384185
    Abstract: A fumaric acid pour point depressant for crude oil and a preparation method therefor are provided. The fumaric acid pour point depressant is obtained by polymerizing a first prepolymer, a second prepolymer, a third monomer and a fourth monomer, where the first prepolymer is obtained by pre-polymerizing vinyl acetate and a first monomer; and the second prepolymer is obtained by pre-polymerizing fumaric acid and a second monomer.
    Type: Grant
    Filed: January 19, 2022
    Date of Patent: July 12, 2022
    Assignees: DESHI ENERGY TECHNOLOGY GROUP CO., LTD., SHANDONG DESHI CHEMICAL COMPANY LIMITED
    Inventors: Shizhang Cui, Zongming Xiu, Liming Wang, Xinwang Song, Ruimei Gao, Yunfu Hou, Zhifeng Lv