• Patent Title: Solid catalyst component for polymerization of olefins, method for producing solid catalyst component for polymerization of olefins, catalyst for polymerization of olefins, method for producing polymer of olefin, method for producing polymer propylene copolymer and propylene copolymer
  • Application No.: US16338517
    Application Date: 2017-10-03
  • Publication No.: US11236189B2
    Publication Date: 2022-02-01
  • Inventor: Hidetoshi Umebayashi
  • Applicant: TOHO TITANIUM CO., LTD.
  • Applicant Address: JP Chigasaki
  • Assignee: TOHO TITANIUM CO., LTD.
  • Current Assignee: TOHO TITANIUM CO., LTD.
  • Current Assignee Address: JP Chigasaki
  • Agency: Westerman, Hattori, Daniels & Adrian LLP
  • Priority: JPJP2016-195482 20161003
  • International Application: PCT/JP2017/035911 WO 20171003
  • International Announcement: WO2018/066535 WO 20180412
  • Main IPC: C08F297/08
  • IPC: C08F297/08 C08F4/654 C08F10/06
Solid catalyst component for polymerization of olefins, method for producing solid catalyst component for polymerization of olefins, catalyst for polymerization of olefins, method for producing polymer of olefin, method for producing polymer propylene copolymer and propylene copolymer
Abstract:
A solid catalyst component for polymerization of olefins is disclosed which can produce a polymer having low stickiness (tackiness) of polymer particles, excellent flowability, and favorable particle size distribution. The solid catalyst component for polymerization of olefins includes 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.
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