US 12,103,987 B2
Method for producing catalyst component for olefin polymerization, method for producing catalyst for olefin polymerization, and method for producing olefin polymer
Morikazu Niibe, Mie (JP); Miyuki Murase, Tokyo (JP); and Takehiro Sagae, Mie (JP)
Assigned to JAPAN POLYPROPYLENE CORPORATION, Tokyo (JP)
Appl. No. 17/598,692
Filed by JAPAN POLYPROPYLENE CORPORATION, Tokyo (JP)
PCT Filed Mar. 17, 2020, PCT No. PCT/JP2020/011844
§ 371(c)(1), (2) Date Sep. 27, 2021,
PCT Pub. No. WO2020/203274, PCT Pub. Date Oct. 8, 2020.
Claims priority of application No. 2019-067540 (JP), filed on Mar. 29, 2019.
Prior Publication US 2022/0144978 A1, May 12, 2022
Int. Cl. C08F 10/06 (2006.01)
CPC C08F 10/06 (2013.01) [C08F 2410/06 (2021.01); C08F 2420/00 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A method for producing a catalyst component for olefin polymerization, comprising the following step (3) and the following step (4):
step (3): granulating, by a spray drying, an aqueous slurry of an ion-exchangeable second layered silicate (B) that satisfies the following characteristic (b1) and characteristic (b2) to obtain ion-exchangeable first layered silicate granulated particles (C),
characteristic (b1): an average particle diameter is 0.03 μm to 0.4 μm,
characteristic (b2): a Rosin-Rammler distribution constant n as determined from a particle size distribution is 1.5 or more, and
step (4): bringing the obtained first layered silicate granulated particles (C) into contact with acid to obtain chemically treated ion-exchangeable second layered silicate granulated particles (D).