Title:
結晶性プロピレン重合体の製造方法
Document Type and Number:
Japanese Patent JP6926789
Kind Code:
B2
Abstract:
To provide a method for controlling crystallinity of a propylene polymer with high production efficiency by utilizing crystallinity controlling agent while making the most of the method for producing propylene polymer using a fluidized bed reactor.SOLUTION: There is provided a method for producing a crystallinepropylene polymer, in which propylene in a gas phase is continuously polymerized in the presence of a catalyst for polymerization of propylene in a fluidized bed reactor. Crystallinity is controlled by using an organosilicon compound of a crystallinity controlling agent and the supply of the organosilicon compound is adjusted depending upon crystallinity of a crystalline propylene polymer, and in order to stabilize operation, liquefied propylene is directly supplied into the fluidized bed to produce the crystalline propylene polymer.SELECTED DRAWING: Figure 1
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Inventors:
Shigeo Mizukami
Application Number:
JP2017148294A
Publication Date:
August 25, 2021
Filing Date:
July 31, 2017
Export Citation:
Assignee:
Japan Polypropylene Corporation
International Classes:
C08F10/06; C08F2/34; C08F4/658
Domestic Patent References:
| JP7062017A | ||||
| JP2007231257A | ||||
| JP2009024074A | ||||
| JP2009073890A |
Attorney, Agent or Firm:
Takashi Kojima