Issued Patents 2021
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11111332 | Isocyanate polymerization catalyst, preparation method thereof, and method for preparing polyisocyanate by using same | Wei Liu, Bin Shi, Yuqi Wang, Lidong Sun, Yuan Li +1 more | 2021-09-07 |
| 11059772 | Imine-type quaternary ammonium salt catalyst, preparation method thereof and use thereof for preparation of polyisocyanate composition | Nuancheng Wang, Yuqi Wang, Bin Shi, Zhicheng Zhu, Hefu Li +2 more | 2021-07-13 |