Method for producing catalyst for polymerization of olefin and catalyst for polymerization of olefin

Patent metadata

Field	Value
Publication number	US-12428503-B2
Application number	US-202117927428-A
Country	US
Kind code	B2
Filing date	Mar 15, 2021
Priority date	May 27, 2020
Publication date	Sep 30, 2025
Grant date	Sep 30, 2025

Abstract

A method is disclosed for producing a catalyst, which suppresses a decrease in polymerization activity due to early deactivation of the active site after the catalyst has been formed, exhibits excellent catalyst activity at the time of polymerization of olefins, and can produce polymers of olefins, which are excellent in stereoregularity. The method for producing a catalyst includes contacting a solid catalyst component (A) containing magnesium, titanium, halogen and an internal electron-donating compound, and a specific organoaluminum compound (B) represented by the general formula (I), with each other, wherein at least one selected from the solid catalyst component (A) and the organoaluminum compound (B) is previously subjected to contact treatment with a hydrocarbon compound having one or more vinyl groups, in an organic solvent containing 30% by mass or more of one or more compounds selected from saturated aliphatic hydrocarbon compounds having 20 or more carbon atoms.

First claim

The invention claimed is:

1. A method for producing a catalyst for polymerization of an olefin, comprising contacting a solid catalyst component (A) containing magnesium, titanium, halogen and an internal electron-donating compound, and
an organoaluminum compound (B) represented by the following general formula (I):
R 1 p AlQ 3-p   (I),

wherein R 1 represents an alkyl group having 1 to 6 carbon atoms, Q represents a hydrogen atom or a halogen atom, and p represents a real number satisfying 0<p≤3,
with each other, wherein
at least one selected from the solid catalyst component (A) and the organoaluminum compound (B) is previously subjected to contact treatment with a hydrocarbon compound having one or more vinyl groups, in an organic solvent containing 30% by mass or more of one or more compounds selected from saturated aliphatic hydrocarbon compounds having 20 or more carbon atoms.

2. The method for producing a catalyst for polymerization of an olefin according to claim 1 , wherein the solid catalyst component (A) is previously subjected to the contact treatment with the hydrocarbon compound having one or more vinyl groups, in the organic solvent containing 30% by mass or more of one or more compounds selected from saturated aliphatic hydrocarbon compounds having 20 or more carbon atoms.

3. The method for producing a catalyst for polymerization of an olefin according to claim 2 , comprising contacting
a precursor composition (α) of the catalyst for polymerization of an olefin, the precursor composition (α) containing: the solid catalyst component (A) containing magnesium, titanium, halogen and the internal electron-donating compound; a hydrocarbon compound having one or more vinyl groups; and an organic solvent containing 30% by mass or more of one or more compounds selected from saturated aliphatic hydrocarbon compounds having 20 or more carbon atoms, and
the organoaluminum compound (B) represented by the following general formula (I):
R 1 p AlQ 3-p   (I),

wherein R 1 represents an alkyl group having 1 to 6 carbon atoms, Q represents a hydrogen atom or a halogen atom, and p represents a real number satisfying 0<p≤3,
with each other.

4. The method for producing a catalyst for polymerization of an olefin according to claim 1 , wherein the organoaluminum compound (B) is previously subjected to the contact treatment with the hydrocarbon compound having one or more vinyl groups, in the organic solvent containing 30% by mass or more of one or more compounds selected from saturated aliphatic hydrocarbon compounds having 20 or more carbon atoms.

5. The method for producing a catalyst for polymerization of an olefin according to claim 4 , comprising contacting
a precursor composition (β) of the catalyst for polymerization of an olefin, the precursor composition (β) containing: the organoaluminum compound (B) represented by the following general formula (I):
R 1 p AlQ 3-p   (I),

wherein R 1 represents an alkyl group having 1 to 6 carbon atoms, Q represents a hydrogen atom or a halogen atom, and p represents a real number satisfying 0<p≤3; a hydrocarbon compound having one or more vinyl groups; and an organic solvent containing 30% by mass or more of one or more compounds selected from saturated aliphatic hydrocarbon compounds having 20 or more carbon atoms, and
the solid catalyst component (A) containing magnesium, titanium, halogen and an internal electron-donating compound,

with each other.

6. The method for producing a catalyst for polymerization of an olefin according to claim 1 , wherein
the amount of at least one selected from the solid catalyst component (A) and the organoaluminum compound (B) to be previously subjected to the contact treatment with the hydrocarbon compound having one or more vinyl groups is 1 mol or more per 1 mol of titanium constituting the solid catalyst component (A) that is subjected to production of the catalyst for polymerization of an olefin.

7. The method for producing a catalyst for polymerization of an olefin according to claim 1 , wherein the hydrocarbon compound having one or more vinyl groups is one or more compounds selected from ethylene, propylene, 1-butene, 1-pentene, 3-methyl-1-butene, 1-hexene, 4-methyl-1-pentene, 3-methyl-1-pentene, 1,4-hexadiene, 1,5-hexadiene, 1,6-octadiene, 1,7-octadiene, 1-heptene, 1-octene, vinylcyclohexane, and vinylcyclohexene.

8. The method for producing a catalyst for polymerization of an olefin according to claim 1 , wherein the organic solvent is a mineral oil.

9. A catalyst for polymerization of an olefin comprising:
a solid catalyst component (A) containing magnesium, titanium, halogen and an internal electron-donating compound; an organoaluminum compound (B) represented by the following general formula (I):
R 1 p AlQ 3-p   (I),

wherein R 1 represents an alkyl group having 1 to 6 carbon atoms, Q represents a hydrogen atom or a halogen atom, and p represents a real number satisfying 0<p≤3;
a hydrocarbon compound having one or more vinyl groups; and
an organic solvent containing 30% by mass or more of one or more compounds selected from saturated aliphatic hydrocarbon compounds having 20 or more carbon atoms, wherein
the hydrocarbon compound having one or more vinyl groups is contained in an amount of at least 0.1% by mass with respect to a total weight of titanium contained in the solid catalyst component (A).

10. The catalyst for polymerization of an olefin according to claim 9 , wherein the hydrocarbon compound having one or more vinyl groups is one or more compounds selected from ethylene, propylene, 1-butene, 1-pentene, 3-methyl-1-butene, 1-hexene, 4-methyl-1-pentene, 3-methyl-1-pentene, 1,4-hexadiene, 1,5-hexadiene, 1,6-octadiene, 1,7-octadiene, 1-heptene, 1-octene, vinylcyclohexane, and vinylcyclohexene.

11. The catalyst for polymerization of an olefin according to claim 9 , wherein the organic solvent is a mineral oil.

Assignees

• Toho Titanium Co Ltd

Inventors

• Kono Hiroyuki
• SAKEMI Takaharu
• Uozumi Toshiya
• Goto Keisuke

Classifications

• C08F10/00

  Homopolymers and copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond · CPC title

• C08F4/654 Primary

  with magnesium or compounds thereof · CPC title

• C08F110/06 Primary

  Propene · CPC title