Method for producing solid catalyst component for use in polymerization of olefin, catalyst for use in polymerization of olefin, and method for producing olefin polymer
US-9670294-B2 · Jun 6, 2017 · US
Solid catalyst component for olefin polymerization, method for producing solid catalyst component for olefin polymerization, catalyst for olefin polymerization, method for producing olefin polymer particle and olefin polymer particle
US2023383024A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2023383024-A1 |
| Application number | US-202118034015-A |
| Country | US |
| Kind code | A1 |
| Filing date | Oct 19, 2021 |
| Priority date | Oct 28, 2020 |
| Publication date | Nov 30, 2023 |
| Grant date | — |
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Abstract
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Provided is a solid catalyst component for olefin polymerization capable of suitably producing polymer particles with a suppressed content ratio of fine powder and reduced surface stickiness at high activity when subjected to polymerization of an olefin. The solid catalyst component for olefin polymerization contains magnesium, titanium, halogen and an internal electron-donating compound, in which a cross-sectional pore area ratio is 10 to 50%, and a ratio MX i /MX s of a cross-sectional pore area ratio (MX i ) in a region of less than 50% in a radial direction to a cross-sectional pore area ratio (MX s ) in a region of 50% or more in the radial direction from a particle center is 0.50 to 2.00.
First claim
Opening claim text (preview).
1 . A solid catalyst component for olefin polymerization, comprising magnesium, titanium, halogen and an internal electron-donating compound, wherein a cross-sectional pore area ratio is 10 to 50%, and a ratio MX i /MX s of a cross-sectional pore area ratio (MX i ) in a region of less than 50% in a radial direction to a cross-sectional pore area ratio (MX s ) in a region of 50% or more in the radial direction from a particle center is 0.50 to 2.00. 2 . A method for producing a solid catalyst component for olefin polymerization, comprising contacting a magnesium compound, a tetravalent titanium halogen compound and an internal electron-donating compound with each other, followed by pressurization to prepare a precursor, and further contacting the precursor, a tetravalent titanium halogen compound and an internal electron-donating compound with each other. 3 . A catalyst for olefin polymerization, comprising: (A) the solid catalyst component for olefin polymerization according to claim 1 , and (B) an organoaluminum compound. 4 . The catalyst for olefin polymerization according to claim 3 , further comprising (C) an external electron-donating compound. 5 . A method for producing an olefin polymer particle, comprising polymerizing an olefin using the catalyst for olefin polymerization according to claim 3 . 6 . An olefin polymer particle, wherein a cross-sectional pore area ratio is 10 to 50%, and a ratio M′X i /M′X s of a cross-sectional pore area ratio (M′X i ) in a region of less than 50% in a radial direction to a cross-sectional pore area ratio (M′X s ) in a region of 50% or more in the radial direction from a particle center is 0.50 to 2.00.
Assignees
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Classifications
- C08F10/06Primary
Propene · CPC title
Alkaline earth titanates · CPC title
Micrometer sized, i.e. from 1-100 micrometer · CPC title
Powder tap density · CPC title
- C08F210/06Primary
Propene · CPC title
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- What does patent US2023383024A1 cover?
- Provided is a solid catalyst component for olefin polymerization capable of suitably producing polymer particles with a suppressed content ratio of fine powder and reduced surface stickiness at high activity when subjected to polymerization of an olefin. The solid catalyst component for olefin polymerization contains magnesium, titanium, halogen and an internal electron-donating compound, in wh…
- Who is the assignee on this patent?
- Toho Titanium Co Ltd
- What technology area does this patent fall under?
- Primary CPC classification C08F10/06. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Thu Nov 30 2023 00:00:00 GMT+0000 (Coordinated Universal Time) (A1). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 1 related publication on this page (citations in our corpus or others sharing the same primary CPC).