公开(公告)号：US12103987B2

公开(公告)日：2024-10-01

申请号：US17598692

申请日：2020-03-17

Applicant: JAPAN POLYPROPYLENE CORPORATION

Inventor： Morikazu Niibe ,  Miyuki Murase ,  Takehiro Sagae

IPC: C08F10/06

CPC classification number: C08F10/06 ,  C08F2410/06 ,  C08F2420/00

Abstract: The present invention relates to a method for producing a catalyst component for olefin polymerization, the method including step (3): granulating, by a spray drying, an aqueous slurry of an ion-exchangeable second layered silicate (B) that satisfies that an average particle diameter is 0.03 μm to 0.4 μm, and a Rosin-Rammler distribution constant n 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).

公开(公告)号：US09751961B2

公开(公告)日：2017-09-05

申请号：US15030453

申请日：2014-10-24

Applicant: JAPAN POLYPROPYLENE CORPORATION

Inventor： Miyuki Murase ,  Takehiro Sagae ,  Masahide Murata

IPC: C08F4/02 ,  C08F4/6592 ,  C08F10/06 ,  C08F4/659

CPC classification number: C08F10/06 ,  C08F4/02 ,  C08F4/025 ,  C08F4/65912 ,  C08F4/65927 ,  C08F10/00 ,  C08F4/65916

Abstract: Provided are a catalyst component for olefin polymerization which is highly active, an olefin polymerization catalyst, and a process for producing an olefin (co)polymer using the catalyst. The catalyst component for olefin polymerization is characterized by comprising an ion-exchanged phyllosilicate having the property 1 and preferably further having the property 2, etc.