Process for producing olefin polymer and olefin polymer
US-2015239996-A1 · Aug 27, 2015 · US
Transition metal compound, olefin polymerization catalyst, and olefin polymer production process
US9796799B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9796799-B2 |
| Application number | US-201615195340-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jun 28, 2016 |
| Priority date | Sep 25, 2012 |
| Publication date | Oct 24, 2017 |
| Grant date | Oct 24, 2017 |
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Abstract
Official abstract text for this publication.
[Object] To provide transition metal compounds with excellent catalytic activity which can afford olefin polymers such as propylene polymers that have high stereoregularity and high molecular weight and may be easily crystallized into a β-phase. [Solution] The transition metal compound is represented by General Formula [I] or is an enantiomer thereof: [in Formula [I], R 1 , R 3 , R 5 , R 6 , R 7 , R 8 , R 9 , R 10 , R 11 , R 12 , R 13 , R 14 , R 15 and R 16 are each independently a hydrogen atom, a hydrocarbon group, a hetero atom-containing hydrocarbon group, or a silicon-containing group; R 2 is a hydrocarbon group, a hetero atom-containing hydrocarbon group, or a silicon-containing group; R 4 is a hydrogen atom; any two substituents of the substituents R 1 to R 16 except R 4 may be bonded to each other to form a ring; M is a Group IV transition metal; Q is a structure such as a halogen atom; and j is an integer of 1 to 4].
First claim
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The invention claimed is: 1. A propylene polymer having a meso pentad fraction of 97.0% to 99.5% and a total fraction of 2,1-insertions and 1,3-insertions of propylene monomers of 0.01 mol % to 0.06 mol % relative to all propylene-derived structural units as measured by 13 C-NMR, wherein the propylene polymer shows one or more melting peaks assigned to α-phases in the range of 160° C. or more, and also shows one or more melting peaks assigned to β-phases in the range of 140° C. to less than 160° C. 2. A shaped article comprising the propylene polymer described in claim 1 .
Assignees
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supported on a carrier, e.g. silica, MgCl2, polymer · CPC title
Propene · CPC title
Propene · CPC title
- C08F110/06Primary
Propene · CPC title
in combination with an organoaluminium compound · CPC title
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- What does patent US9796799B2 cover?
- [Object] To provide transition metal compounds with excellent catalytic activity which can afford olefin polymers such as propylene polymers that have high stereoregularity and high molecular weight and may be easily crystallized into a β-phase. [Solution] The transition metal compound is represented by General Formula [I] or is an enantiomer thereof: …
- Who is the assignee on this patent?
- Mitsui Chemicals Inc
- What technology area does this patent fall under?
- Primary CPC classification C08F110/06. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Oct 24 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 1 related publication on this page (citations in our corpus or others sharing the same primary CPC).