A pyridine imine nickel complex, its preparation method and use
By preparing a pyridine imine nickel complex and combining it with an aluminoxane co-catalyst, the problem of low activity in existing olefin polymerization catalysts was solved, achieving efficient and low-cost ethylene polymerization and obtaining polyethylene materials with narrow molecular weight distribution and high branching.
Patent Information
- Application Number
- CN202211461244.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2022-11-16
- Publication Date
- 2026-04-28
- Estimated Expiration
- 2042-11-16
AI Technical Summary
Existing olefin polymerization catalysts have low catalytic activity, complex preparation methods, high costs, and unstable performance, making it difficult to meet the industrial needs of polyethylene materials.
A pyridineimine nickel complex was developed, prepared by complexation reaction of specific compounds, and combined with aluminoxane or alkylaluminum as a cocatalyst for ethylene polymerization to regulate the molecular weight and branching degree of the polymer.
A polyethylene material with high catalytic activity (up to 10.8×10⁶ g·mol⁻¹(Ni)·h⁻¹), low cost, simple preparation process, and stability was achieved. It has a narrow molecular weight distribution and high branching characteristics, making it suitable for industrial applications.