The invention relates to a phosphine-substituted vinyl containing metallocene catalyst, and also to the preparation process of the same as well as to the application of the catalyst. The catalyst has the general formula of Cp2(CR1=CR2(P(R32))MX, wherein Cp is a ligand containing cyclopentadiene having 1~5 substitutions, of which two neighbors connecting to each other to form fused rings having more than two members; R1-R3 is selected from the groups consisting of hydrogen, C1~C18 alkyl or perfluoro-alkyl, C6~C24 aralkyl or alkaryl; M is selected from the groups consisting of metals of the IVB group; and X is selected from the groups consisting of halogens, C1~C24 alkyl, alkoxyl, silicone or alkaryl. With aluminoxane or modified aluminoxane, aluminum alkyl, halogenated aluminum alkyl or their mixture as the catalyst promoter, the phosphine-substituted vinyl containing metallocene catalyst may be employed as the major catalyst for the polymerization or copolymerization of alpha-olefin, Due to its high activity, the polymerization may occur at both high and low temperatures with the polymer having higher molecular weight and broader molecular weight distribution.
本发明涉及一种含膦取代
乙烯基的茂
金属催化剂,还涉及其制备工艺以及催化剂的应用。该催化剂的通式为 Cp2(CR1=CR2(P(
R32))MX,其中 Cp 是含有
环戊二烯的
配体,具有 1~5 个取代位,其中两个邻位相互连接形成具有两个以上成员的融合环;R1-R3 选自氢、C1~C18 烷基或
全氟烷基、C6~C24 芳基或烷芳基;M 选自 IVB 族
金属;X 选自卤素、C1~C24 烷基、烷氧基、
硅或烷芳基。以铝氧烷或改性铝氧烷、铝烷基、卤代铝烷基或它们的混合物作为催化剂
促进剂,含
磷化氢取代
乙烯基的茂
金属催化剂可用作α-烯烃聚合或共聚的主要催化剂,由于其活性高,聚合可在高温和低温下进行,聚合物的分子量更高,分子量分布更广。