SOLID CATALYST COMPONENT FOR OLEFIN POLYMERIZATION, METHOD FOR PRODUCING SOLID CATALYST COMPONENT FOR OLEFIN POLYMERIZATION, CATALYST FOR OLEFIN POLYMERIZATION, METHOD FOR PRODUCING OLEFIN POLYMER, METHOD FOR PRODUCING PROPYLENE COPOLYMER, AND PROPYLENE COPOLYMER
申请人:Toho Titanium Co., Ltd.
公开号:EP3521324A1
公开(公告)日:2019-08-07
Provided is a solid catalyst component for polymerization of olefins which is capable of producing a polymer that has very low adherence ascribable to the stickiness (tackiness) of polymer particles, is excellent in flowability, and also has a favorable particle size distribution, in order to polymerize olefins, particularly, to perform the copolymerization reaction, such as random copolymerization or block copolymerization, of propylene and ethylene. The solid catalyst component for polymerization of olefins comprises titanium, magnesium, a halogen atom and an internal electron donor, wherein the solid catalyst component has a multimodal pore volume distribution measured by a mercury intrusion method and has one or more peak tops in each of a pore radius range from 0.002 µm to 1 µm and a pore radius range from larger than 1 µm to 30 µm or smaller, and a ratio represented by pore volume V1 derived from pores in the radius range from 0.002 µm to 1 µm/pore volume V2 derived from pores in the radius range from larger than 1 µm to 30 µm or smaller is 0.30 to 0.65.
本发明提供了一种用于烯烃聚合的固体催化剂组分,该组分能够生成一种聚合物,该聚合物具有极低的粘附性(可归因于聚合物颗粒的粘性),流动性极佳,同时具有良好的粒度分布,以便聚合烯烃,特别是进行丙烯和乙烯的共聚反应,例如无规共聚或嵌段共聚。用于烯烃聚合的固体催化剂组分包括钛、镁、卤原子和内部电子供体,其中固体催化剂组分具有用汞侵入法测得的多模态孔体积分布,并在孔半径范围从 0.002微米至1微米和大于1微米至30微米或更小的孔半径范围内各具有一个或多个峰顶,由0.002微米至1微米的半径范围内的孔得出的孔体积V1/由大于1微米至30微米或更小的半径范围内的孔得出的孔体积V2所代表的比率为0.30至0.65。