Solid catalyst component for olefine polymerization, catalyst with the component and its application

本发明提供了一种用于CH#-[2]＝CHR烯烃聚合反应的固体催化剂组分，其中R为氢或C#-[1]-C#-[6]的烷基或芳基，其包含镁、钛、卤素和给电子体，该给电子体选自下述通式(I)中的至少一种多元酯化合物：其中A、B为碳或选自氮、氧、硫、硅、硼的杂原子；R#-[1]-R#-[6]、R#+[1]-R#+[n]为相同或不相同的氢、卤素或取代或未取代的直链或支链的C#-[1]-C#-[20]烷基、环烷基、芳基、烷芳基、芳烷基、烯烃基、稠环芳基、酯基，R#-[1]和R#-[2]不是氢，R#-[3]-R#-[6]及R#+[1]-R#+[n]基团上任意包含一个或几个杂原子作为碳或氢原子或两者的取代物，所述的杂原子选自氮、氧、硫、硅、磷或卤原子，R#-[3]-R#-[6]及R#+[1]-R#+[n]基团中的一个或多个可以连起来成环；n为0-10的整数。 The present invention provides a solid catalyst component for the polymerization of olefins, comprising magnesium, titanium, a halogen and an electron donor, wherein said electron donor comprises at least one selected from the group consisting of ester of polyol of the formula (I): R1CO-O-CR3R4-A-CR5R6-O-CO-R2 (I) wherein, R1 and R2 groups, which may be identical or different, can be substituted or unsubstituted hydrocarbyl having 1 to 20 carbon atoms, R3-R6 groups, which may be identical or different, can be selected from the group consisting of hydrogen, halogen or substituted or unsubstituted hydrocarbyl having 1 to 20 carbon atoms, R1-R6 groups optionally contain one or more hetero-atoms replacing carbon, hydrogen atom or the both, said hetero-atom is selected from the group consisting of nitrogen, oxygen, sulfur, silicon, phosphorus and halogen atom, two or more of R3-R6 groups can be linked to form saturated or unsaturated monocyclic or polycyclic ring A is a single bond or bivalent linking group with chain length between two free radicals being 1-10 atoms, wherein said bivalent linking group is selected from the group consisting of aliphatic, alicyclic and aromatic bivalent radicals, and can carry C1-C20 linear or branched substituents one or more of carbon atom and/or hydrogen atom on above-mentioned bivalent linking group and substituents can be replaced by a hetero-atom selected from the group consisting of nitrogen, oxygen, sulfur, silicon, phosphorus, and halogen atom, and two or more said substituents on the linking group as well as above-mentioned R3-R6 groups can be linked to form saturated or unsaturated monocyclic or polycyclic ring.