含Ti-Mg-Al配合物的催化剂合成及催化烯烃聚合

Research on novel Mg-Ti-Al complex and its catalysis for olefin polymerization

合成了一种新型含Ti—Mg—Al配合物（MTA）的聚烯烃催化剂，研究了它的结构及其催化乙烯均聚合及乙烯与1-己烯共聚合的性能。在常压、均相聚合条件下，MTA催化乙烯聚合具有较高的活性，可达2．14×10^5g/（mol·h）。MTA在催化乙烯与1-己烯共聚合时，具有良好的聚合活性。通过改变共聚单体的浓度，可有效调节聚合物的熔点、1-己烯的插入率、相对分子质量及其分布。

This paper synthesized a kind of novel catalyst containing Ti-Mg-AI complex （MTA） and studied its structure and catalytic property to ethylene homo-polymerization and ethylene-1-hexene copolymerization. Under the conditions of atmospheric pressure and homogeneous polymerization, MTA reached a high catalytic activity to ethylene polymerization, up to 2.14×10^5 g/（mol·h）. MTA also exhibited an eminent activity in the catalytic co-polymerization of ethylene and 1-hexene. The insertion ratio of 1-hexene, melt point and molecular weight and its distribution of the resultant polymer could be efficaciously adjusted by changing concentration of the comonomer.