Solid catalyst component for polymerization of olefins, catalyst comprising the same and use thereof
申请人:Gao Mingzhi
公开号:US20050239636A1
公开(公告)日:2005-10-27
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 polyol ester compounds of the formula (I): R
1
CO—O—CR
3
R
4
-A-CR
5
R
6
—O—CO—R
2
(I) wherein, R
1
and R
2
groups, which may be identical or different, can be substituted or unsubstituted hydrocarbyl having 1 to 20 carbon atoms, R
3
-R
6
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, R
1
-R
6
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 R
3
-R
6
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 C
1
-C
20
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 R
3
-R
6
groups can be linked to form saturated or unsaturated monocyclic or polycyclic ring.
本发明提供了一种用于烯烃聚合的固体催化剂组分,包括镁、钛、卤素和电子给体,其中所述电子给体包括以下至少一种选择自聚醇酯化合物组的化合物(I):R1CO—O—CR3R4-A-CR5R6—O—CO—R2(I)其中,R1和R2基团可以相同或不同,可以是取代或未取代的1至20个碳原子的烃基,R3-R6基团可以相同或不同,可以选择自氢、卤素或取代或未取代的1至20个碳原子的烃基的群组中,R1-R6基团可以选用一个或多个杂原子代替碳、氢原子或两者,所述杂原子选择自氮、氧、硫、硅、磷和卤素原子的群组,R3-R6基团中的两个或更多个可以连接形成饱和或不饱和的单环或多环环;A是单键或双价连接基团,链长在两个自由基之间为1-10个原子,其中所述双价连接基团选自脂肪族、环脂族和芳香族双价基团的群组,可以携带C1-C20线性或支链取代基;上述双价连接基团和取代基上的一个或多个碳原子和/或氢原子可以被选择自氮、氧、硫、硅、磷和卤素原子的群组中的杂原子取代,两个或更多所述取代基在连接基团上以及上述R3-R6基团中可以连接形成饱和或不饱和的单环或多环环。