Phosphine-phenol transition metal complex as well as preparation method and application thereof

The invention relates to the technical field of olefin polymerization catalysts, and discloses a phosphine-phenol transition metal complex as well as a preparation method and application thereof. The structural formula of the phosphine-phenol transition metal complex is shown as a formula (I), and M is selected from IVB group metal; ar is selected from substituted or unsubstituted C6-C20 aryl groups; x is selected from halogen and C1-C10 alkyl, and n is 1 or 2. The phosphine-phenol transition metal complex is used as a main catalyst of an olefin polymerization catalyst, high-activity olefin polymerization catalysis can be achieved, and the obtained polymer is high in molecular weight, narrow in molecular weight distribution and excellent in copolymerization performance. # imgabs0 # 本发明涉及烯烃聚合催化剂技术领域，公开了一种膦-酚过渡金属配合物及其制备方法和应用。所述膦-酚过渡金属配合物的结构式如式(I)所示，其中，M选自ⅣB族金属；Ar选自取代或未取代的C6-C20芳基；X选自卤素、C1-C10烃基，n为1或2。本发明所述的膦-酚过渡金属配合物用作烯烃聚合催化剂的主催化剂，能够实现较高活性催化烯烃聚合，所得聚合物的分子量较高，分子量分布较窄，并且具有优异的共聚合性能。#imgabs0#