Hybrid supported metallocene catalyst, and polyolefin resin having excellent processability and using same
US-2019263942-A1 · Aug 29, 2019 · US
Polyolefin
US12221498B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-12221498-B2 |
| Application number | US-201917282524-A |
| Country | US |
| Kind code | B2 |
| Filing date | Dec 20, 2019 |
| Priority date | Dec 21, 2018 |
| Publication date | Feb 11, 2025 |
| Grant date | Feb 11, 2025 |
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Abstract
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The present invention relates to polyolefin. More specifically, the present invention relates to polyolefin having excellent dart drop impact strength, and exhibiting improved transparency, and such polyolefin has a density of 0.915 g/cm 3 to 0.930 g/cm 3 measured according to ASTM D1505; and has an ethylene sequence inhomogeneity (I) calculated by the following Equation 1 of 1.25 to 1.40, when analyzed by SSA (Successive Self-nucleation and Annealing): Inhomogeneity ( I )= L w /L n [Equation 1] in the Equation 1, L w is weighted average (unit: nm) of ESL (Ethylene sequence length), and L n is arithmetic mean (unit: nm) of ESL (Ethylene sequence length).
First claim
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What is claimed is: 1. A polyolefin having a density of 0.915 g/cm 3 to 0.920 g/cm 3 measured according to ASTM D1505; and an ethylene sequence inhomogeneity (I) calculated by Equation 1 of 1.26 to 1.29, when analyzed by a Successive Self-nucleation and Annealing (SSA) thermogram: Inhomogeneity ( I )= L w /L n [Equation 1] in Equation 1, the L n is calculated by Equation 2, and the L w is calculated by Equation 3: L n = S 1 L 1 2 + S 2 L 2 2 + S 3 L 3 2 + … + S i L i 2 S 1 + S 2 + S 3 + … + S i = ∑ f i L i [ Equation 2 ] L w = S 1 L 1 2 + S 2 L 2 2 + S 3 L 3 2 + … + S i L i 2 S 1 L 1 + S 2 L 2 + S 3 L 3 + … + S i L i = ∑ f i L i 2
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with non-conjugated dienes, e.g. EPT rubbers · CPC title
Heteroatom-substituted bridge, i.e. Cp or analog where the bridge linking the two Cps or analogs is substituted by at least one group that contains a heteroatom · CPC title
in combination with an organoaluminium compound · CPC title
supported on a carrier, e.g. silica, MgCl2, polymer · CPC title
Heteroatom-substituted Cp, i.e. Cp or analog where at least one of the substituent of the Cp or analog ring is or contains a heteroatom · CPC title
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- What does patent US12221498B2 cover?
- The present invention relates to polyolefin. More specifically, the present invention relates to polyolefin having excellent dart drop impact strength, and exhibiting improved transparency, and such polyolefin has a density of 0.915 g/cm 3 to 0.930 g/cm 3 measured according to ASTM D1505; and has an ethylene sequence inhomogeneity (I) calculated by the following Equation 1 of 1.25 to 1.40, wh…
- Who is the assignee on this patent?
- Lg Chemical Ltd
- What technology area does this patent fall under?
- Primary CPC classification C08F210/16. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Feb 11 2025 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 12 related publications on this page (citations in our corpus or others sharing the same primary CPC).