An object of the present invention is to provide polyethylene having excellent moldability and impact resistance and excellent balance between rigidity and durability, produced using a novel organoaluminum compound-supported chromium catalyst, a method for producing polyethylene, and a hollow plastic molding containing the polyethylene. The polyethylene of the invention is polymerized using a chromium catalyst, and has a weight average molecular weight (Mw) of 30,000 or more at the maximum value in a branching degree distribution curve that shows a molecular weight dependency of short chain branches having 4 or more carbon atoms.
本发明的目的是提供一种使用新型
有机铝化合物支撑
铬催化剂生产的聚
乙烯、一种生产聚
乙烯的方法和一种含有该聚
乙烯的中空塑料模具,该聚
乙烯具有优异的成型性和抗冲击性,并在刚性和耐久性之间取得优异的平衡。本发明的聚
乙烯是使用
铬催化剂聚合而成的,在支化度分布曲线的最大值处,重量平均分子量(Mw)为 30,000 或更高,该曲线显示了具有 4 个或更多碳原子的短链分支的分子量依赖性。