| abstract |
The invention relates to a narrow molecular weight polypropylene and a preparation method thereof, in particular to a narrow molecular weight propylene polymer prepared by using Ziegler-Natta catalyst and reactor polymerization. The polymer has high and adjustable isotacticity, narrow molecular weight distribution and high polymer tailing index, and does not contain propylene orientation irregularities, high melting point and crystallization temperature, and traditional Compared with the narrow molecular weight distribution polypropylene produced by the degradation method, it has the advantages of economy, energy saving and environmental protection. The product of the invention is particularly suitable for applications in fields with high fluidity requirements such as spinning, thin-wall injection and casting processes and preparation of transparent materials; in addition, in view of the narrow molecular weight distribution, the polymer of the invention also has a certain transparency application. The advantages. |