CATALYST COMPONENT FOR PROPYLENE POLYMERIZATION, PREPARATION METHOD THEREFOR AND CATALYST HAVING SAME
申请人:China Petroleum&Chemical Corporation
公开号:EP3135699A1
公开(公告)日:2017-03-01
The present invention discloses a catalyst component for propene polymerization, comprising titanium, magnesium, halogen, and internal electron donor A, wherein said internal electron donor A is selected from the compouns as shown in Formula I,
in Formula I, R is selected from hydrogen, hydroxyl, and substituted or unsubstituted C1-C30 hydrocarbyl, preferably from hydrogen, hydroxyl, and substituted or unsubstituted C1-C20 alkyl, C6-C30 aryl, C6-C30 heteroaryl, C7-C30 alkylaryl and C7-C30 arylalkyl; R1 and R2 may be identical to or different from each other, and are selected from hydrogen and substituted or unsubstituted C1-C30 hydrocarbyl, preferably from hydrogen and substituted or unsubstituted C1-C20 alkyl, C6-C30 aryl, C7-C30 alkylaryl and C7-C30 arylalkyl. According to the present invention, by using the compound as shown in Formula I as internal electron donor compound for propene polymerization, the catalyst has a higher activity, and a slow rate of delay of activity. The obtained polymer has not only a wider molecular weight distribution, but also a high melt index and isotacticity.
本发明公开了一种用于丙烯聚合的催化剂组分,由钛、镁、卤素和内部电子供体 A 组成,其中所述内部电子供体 A 选自如式 I 所示的化合物、
在式 I 中,R 选自氢、羟基和取代或未取代的 C1-C30 碳氢基,优选选自氢、羟基和取代或未取代的 C1-C20 烷基、C6-C30 芳基、C6-C30 杂芳基、C7-C30 烷芳基和 C7-C30 芳烷基;R1和R2可以彼此相同或不同,并且选自氢和取代或未取代的C1-C30烃基,优选选自氢和取代或未取代的C1-C20烷基、C6-C30芳基、C7-C30烷芳基和C7-C30芳烷基。根据本发明,使用如式 I 所示的化合物作为丙烯聚合的内部电子供体化合物,催化剂具有更高的活性,并且活性延迟的速度较慢。所得到的聚合物不仅分子量分布更广,而且熔融指数和等活度都很高。