Hybrid supported metallocene catalyst, and polyolefin resin having excellent processability and using same
申请人:HANWHA CHEMICAL CORPORATION
公开号:US11248067B2
公开(公告)日:2022-02-15
The present invention relates to a hybrid supported metallocene catalyst including at least first metallocene compound, at least one second metallocene compound, at least one cocatalyst compound, and a carrier, a preparation method therefor, and a polyolefin resin polymerized in the presence of the catalyst, wherein the second metallocene compound is a compound of a bridged structure having a ligand of an asymmetric structure, and the polyolefin resin has a density of 0.910 g/cm3 to 0.960 g/cm3, a molecular weight density in a unimodal distribution of 3 to 5, a melt index of 0.05 to 100 at 2.16 kg, and a melt flow rate of 20 to 40.
本发明涉及一种包括至少第一茂金属化合物、至少一种第二茂金属化合物、至少一种助催化剂化合物和载体的杂化支撑茂金属催化剂、其制备方法以及在该催化剂存在下聚合的聚烯烃树脂,其中第二茂金属化合物是具有不对称结构配位体的桥接结构的化合物,聚烯烃树脂的密度为0.910 g/cm3 至 0.960 g/cm3,单峰分布的分子量密度为 3 至 5,熔融指数在 2.16 kg 时为 0.05 至 100,熔体流动速率为 20 至 40。