Solid catalyst component for olefin polymerization

Patent metadata

Field	Value
Publication number	US-11840595-B2
Application number	US-202117392684-A
Country	US
Kind code	B2
Filing date	Aug 3, 2021
Priority date	Aug 7, 2020
Publication date	Dec 12, 2023
Grant date	Dec 12, 2023

Abstract

To produce an olefin-based polymer having a minor amount of decrease in bulk density due to heat.
A solid catalyst component for olefin polymerization containing a titanium atom, a magnesium atom, a halogen atom, and as internal electron donor, and having an envelope E1 calculated by the following Formula (1) in a range of 0.810 to 0.920.

E 1= LE 1/ LS 1  (1)

(In Formula, LE1 is a convex hull perimeter of the solid catalyst component for olefin polymerization obtained from an image of the solid catalyst component for olefin polymerization captured with a scanning electron microscope, and LS1 is an actual perimeter of the solid catalyst component for olefin polymerization obtained from the image of the solid catalyst component for olefin polymerization captured with the scanning electron microscope.)

First claim

What is claimed is:

1. A solid catalyst component for olefin polymerization containing a titanium atom, a magnesium atom, a halogen atom, and an internal electron donor, and having an envelope E1 calculated by the following Formula (1) in a range of 0.810 to 0.920:
E 1= LE 1/ LS 1  (1)

wherein LE1 is a convex hull perimeter of the solid catalyst component for olefin polymerization obtained from an image of the solid catalyst component for olefin polymerization captured with a scanning electron microscope, and
LS1 is an actual perimeter of the solid catalyst component for olefin polymerization obtained from the image of the solid catalyst component for olefin polymerization captured with the scanning electron microscope.

2. The solid catalyst component for olefin polymerization according to claim 1 , wherein E1 is 0.840 to 0.920.

3. The solid catalyst component for olefin polymerization according to claim 2 , wherein E1 is 0.860 to 0.915.

4. The solid catalyst component for olefin polymerization according claim 1 , wherein the internal electron donor is at least one selected from the group consisting of monoester compounds, aliphatic dicarboxylic acid ester compounds, aromatic dicarboxylic acid ester compounds, diol diester compounds, and ether compounds.

5. The solid catalyst component for olefin polymerization according to claim 1 , wherein the internal electron donor is at least one selected from the group consisting of aliphatic dicarboxylic acid ester compounds, and aromatic dicarboxylic acid ester compounds.

6. The solid catalyst component for olefin polymerization according to claim 1 , wherein an olefin contains at least one component selected from propylene, ethylene, and 1-butene.

7. A catalyst for olefin polymerization containing the solid catalyst component for olefin polymerization according to claim 1 , and an organoaluminum compound.

8. A method for producing an olefin-based polymer, the method comprising olefin polymerization in the presence of the catalyst for olefin polymerization according to claim 7 .

Assignees

• Sumitomo Chemical Co

Inventors

• Ito Masaki

Classifications

• C08F4/16 Primary

  of silicon, germanium, tin, lead, titanium, zirconium or hafnium · CPC title

• C08F4/12

  of boron, aluminium, gallium, indium, thallium or rare earths · CPC title

• C08F4/6465 Primary

  containing silicium · CPC title

• C08F210/06 Primary

  Propene · CPC title

• C08F4/6494

  containing oxygen · CPC title