Catalyst component for olefin polymerization, preparation method of catalyst component, catalyst and application of catalyst
By preparing a catalyst component containing components such as magnesium composite, auxiliary precipitation agent, titanium-containing compounds, etc., the problems of insufficient molecular weight, low distribution and poor processing performance of ultra-high molecular weight polyethylene in the prior art are solved, and polyethylene preparation with high molecular weight, low hexane extract content and excellent processing performance are achieved.
Patent Information
- Application Number
- CN202311413496.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2023-10-27
- Publication Date
- 2025-04-29
- Estimated Expiration
- 2043-10-27
AI Technical Summary
The prior art is difficult to prepare ultra-high molecular weight polyethylene with sufficient high molecular weight, narrow molecular weight distribution, low hexane extract content, large particles and small fine powder content, and its poor processing performance limits its large-scale application.
A catalyst component for olefin polymerization includes magnesium composites, co-precipitants, titanium-containing compounds, acetate compounds, organic alcohol compounds, organoaluminum compounds and electron donor compounds. By optimizing the proportions and reaction conditions of these components, a catalyst with high activity and bulk density is prepared.
The prepared catalyst can regulate the molecular weight of the polymer, increase the narrowness of the molecular weight distribution, reduce the content of hexane extract, reduce the content of large particles and fine powder, improve the spherical and low tangle properties, thereby improving the processing performance and quality of polyethylene.