Title:
PROPYLENE POLYMER MANUFACTURING METHOD
Document Type and Number:
WIPO Patent Application WO/2023/248727
Kind Code:
A1
Abstract:
Provided is a propylene polymer manufacturing method that, in a first step, manufactures a first propylene polymer in the presence of a catalyst for olefin polymerization, and, in a following second step, manufactures a second propylene polymer in the presence of the first propylene polymer. A reaction inhibitor derived from biomass containing 5-2000 ppm by mass of water is added during at least one selected from the group consisting of the first step, the second step, and the interval between the first step and the second step.
Inventors:
HOSOI TOMOHIRO (JP)
NISHIBU TAKAHISA (JP)
NISHIBU TAKAHISA (JP)
Application Number:
PCT/JP2023/020011
Publication Date:
December 28, 2023
Filing Date:
May 30, 2023
Export Citation:
Assignee:
JAPAN POLYPROPYLENE CORP (JP)
International Classes:
C08F297/08; C08F4/658; C12P7/02
Foreign References:
| JP2015067817A | 2015-04-13 | |||
| JP2009292879A | 2009-12-17 | |||
| JP2007534651A | 2007-11-29 | |||
| JP2021501231A | 2021-01-14 | |||
| US20080128361A1 | 2008-06-05 |
Attorney, Agent or Firm:
KISHIMOTO, Tatsuhito et al. (JP)
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