| abstract |
The invention provides an application of a catalyst component A in olefin polymerization, the catalyst component is obtained by contacting a solid component a containing magnesium, titanium, halogen and an internal donor component with an organosilicon compound b containing a Si-H functional group; the magnesium in the solid component a comes from a raw material alkoxy magnesium, and the temperature of the Catalytic olefin polymerization performed by the catalyst component A is 80-130 DEG C. The prepared olefin polymerization catalyst component and the olefin polymerization catalyst have high polymerization activity during high temperature polymerization and good high-degree stereospecific capacity, the obtained polymer has high stacking density and high melt index (the catalyst has good hydrogen regulating sensitivity), and the application of the invention has good industrial application value. |