Solid catalyst component mixture for polymerizing olefins, catalyst for polymerizing olefins, and production method of polymer of olefins

Patent metadata

Field	Value
Publication number	US-2026022198-A1
Application number	US-202318998745-A
Country	US
Kind code	A1
Filing date	Jul 27, 2023
Priority date	Jul 28, 2022
Publication date	Jan 22, 2026
Grant date	—

Abstract

A solid catalyst component mixture for polymerizing olefins that allows a polymer of olefins having both a high melt flowability and rigidity to be easily produced is provided.A solid catalyst component mixture for polymerizing olefins comprises: a first solid catalyst component for polymerizing olefins containing magnesium, titanium, halogen and a succinate diester compound, and a second solid catalyst component for polymerizing olefins containing magnesium, titanium, halogen and a phthalate diester compound, at a mass ratio of First solid catalyst component for polymerizing olefins:Second solid catalyst component for polymerizing olefins=37:63 to 87:13.

First claim

1 . A solid catalyst component mixture for polymerizing olefins comprising:
a first solid catalyst component for polymerizing olefins containing magnesium, titanium, halogen and a succinate diester compound and a second solid catalyst component for polymerizing olefins containing magnesium, titanium, halogen and a phthalate diester compound at a mass ratio of First solid catalyst component for polymerizing olefins:Second solid catalyst component for polymerizing olefins=37:63 to 87:13.

2 . The solid catalyst component mixture for polymerizing olefins according to claim 1 , wherein the content ratio of the succinate diester compound in terms of solid content is 4.7 to 14.9 mass %.

3 . The solid catalyst component mixture for polymerizing olefins according to claim 1 , wherein the content ratio of the phthalate diester compound in terms of solid content is 2.2 to 7.9 mass %.

4 . A catalyst for polymerizing olefins comprising:
(I) the solid catalyst component mixture for polymerizing olefins according to claim 1 , and (II) one or more organic aluminum compounds selected from the compounds represented by the following general formula (1):

wherein R 1 is an alkyl group having 1 to 6 carbon atoms, Q is a hydrogen atom or a halogen atom, p satisfies 0<p≤3, and when a plurality of R 1 is present, R 1 may be the same or different from each other, and when a plurality of Q is present, Q may be the same or different from each other.

5 . The catalyst for polymerizing olefins according to claim 4 comprising:
(I) the solid catalyst component mixture for polymerizing olefins,
(II) one or more organic aluminum compounds selected from the compounds represented by the following general formula (1):

wherein R 1 is an alkyl group having 1 to 6 carbon atoms, Q is a hydrogen atom or a halogen atom, p satisfies 0<p≤3, and when a plurality of R 1 is present, R 1 may be the same or different from each other, and when a plurality of Q is present, Q may be the same or different from each other, and
(III) an external electron-donating compound.

6 . A method for producing polymer of olefins comprising polymerizing olefins using the catalyst for polymerizing olefins according to claim 4 .

7 . A method for producing polymer of olefins comprising polymerizing olefins using the catalyst for polymerizing olefins according to claim 5 .

Assignees

• Toho Titanium Co Ltd

Inventors

• Ogawa Hayashi
• Kurosaki Keiichi
• Funabashi Hideo

Classifications

• C08F110/00

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

• C08F4/6423 Primary

  Component of C08F4/64 containing at least two different metals · CPC title

• C08F4/6465

  containing silicium · CPC title

• C08F4/6421

  Titanium tetrahalides with organo-aluminium compounds · CPC title

• C08F4/654

  with magnesium or compounds thereof · CPC title