Methods for improving production in gas phase polymerization
US-12152095-B2 · Nov 26, 2024 · US
Solid titanium catalyst component, olefin polymerization catalyst, and process for producing olefin polymer
US9593176B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9593176-B2 |
| Application number | US-201414450671-A |
| Country | US |
| Kind code | B2 |
| Filing date | Aug 4, 2014 |
| Priority date | Nov 17, 2004 |
| Publication date | Mar 14, 2017 |
| Grant date | Mar 14, 2017 |
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- Title
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Abstract
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The present invention provides a process for producing an α-olefin polymer comprising polymerizing or copolymerizing (a) C 3 or higher α-olefin (s) in the presence of an olefin polymerization catalyst comprising solid titanium catalyst component (I) containing titanium, magnesium, halogen, and a compound with a specific structure having two or more ether linkages and organometallic catalyst component (II) with high catalytic activity. In this process, particularly even in (co)polymerizing (a) higher olefin(s), demineralization is unnecessary. A 4-methyl-1-pentene-based polymer obtained by polymerization using the catalyst of the present invention is excellent in tacticity, transparency, heat resistance, and releasability, and the polymer is particularly suitable for a release film.
First claim
Opening claim text (preview).
The invention claimed is: 1. A film obtained by forming a copolymer containing 80 to 99.9 mass % of structural units derived from 4-methyl-1-pentene and 0.1 to 20 mass % of structural units derived from at least one α-olefin having 3 to 11 carbon atoms except 4-methyl-1-pentene, wherein the ratio c 1 /d 1 is in the range of 0.1 to 1.5, c 1 representing the blocking factor in g/cm of the film, d 1 representing the content in mol % of structural units derived from the α-olefin(s) having 3 to 11 carbon atoms except 4-methyl-1-pentene in the n-decane-soluble component of the copolymer. 2. A release film made of the film according to claim 1 .
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Classifications
Pretreating with non-metals or metal-free compounds · CPC title
- C08F10/00Primary
Homopolymers and copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond · CPC title
Use as polymer for film forming · CPC title
Monomers containing five or more carbon atoms · CPC title
Isotactic · CPC title
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- What does patent US9593176B2 cover?
- The present invention provides a process for producing an α-olefin polymer comprising polymerizing or copolymerizing (a) C 3 or higher α-olefin (s) in the presence of an olefin polymerization catalyst comprising solid titanium catalyst component (I) containing titanium, magnesium, halogen, and a compound with a specific structure having two or more ether linkages and organometallic catalyst co…
- Who is the assignee on this patent?
- Mitsui Chemicals Inc
- What technology area does this patent fall under?
- Primary CPC classification C08F10/00. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Mar 14 2017 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).