Methods for improving production in gas phase polymerization
US-12152095-B2 · Nov 26, 2024 · US
AN ETHYLENE-1-HEXENE-1-BUTENE TERPOLYMER AND A FILM INCLUDING THE SAME (As Amended)
US2018208693A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2018208693-A1 |
| Application number | US-201515320193-A |
| Country | US |
| Kind code | A1 |
| Filing date | Jul 17, 2015 |
| Priority date | Jul 18, 2014 |
| Publication date | Jul 26, 2018 |
| Grant date | — |
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Abstract
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The present invention relates to ethylene-1-hexene-1-butene terpolymer and a film including the same. The ethylene-1-hexene-1-butene terpolymer according to the present invention has an optimized range of density and melt index and includes 1-hexene and 1-butene as comonomers, and can provide a polymer showing excellent properties by regulating the content ratio of the comonomers in a certain range. Therefore, the film prepared by using the same can be usefully used because it has excellent stickiness, processibility, and falling dart impact strength which are especially suitable for stretch films.
First claim
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What is claimed is: 1 . An ethylene-1-hexene-1-butene terpolymer, of which CI (Co-monomer Incorporation) Index represented by the following Equation 1 is 0.5 to 5; density is 0.900 to 0.916 g/cm 3 ; melt index (MI) measured according to ASTM D1238 at 190° C. and 2.16 kg load condition is 2.0 to 5.0 g/10 mins; and weight ratio of 1-hexene to 1-butene is 1 to 5: CI Index = ( SCB content at high molecular weight side - SCB content at low molecular weight side ) ( SCB content at low molecular weight side ) [ Equation 1 ] in Equation 1, the SCB (short chain branch) content (unit: ea/1,000C) means the content of C2-C7 branches per 1000 carbons, and the SCB content at low molecular weight side and the SCB content at high molecular weight side mean the SCB content values at the left boundary (the SCB content at low molecular weight side) and the right boundary (the SCB content at high molecular weight side) of the middle range that occupies 60% of the whole area except the right 20% of the area and the left 20% of the area in the molecular weight distribution graph obtained by plotting log value of molecular weight M of the ethylene-1-hexene-1-butene terpolymer (log M) on x axis against the molecular weight distribution to the log value (dwt/dlog M) on y axis. 2 . The ethylene-1-hexene-1-butene terpolymer according to claim 1 , of which weight average molecular weight is 50,000 to about 150,000 g/mol. 3 . The ethylene-1-hexene-1-butene terpolymer according to claim 1 , of which molecular weight distribution (weight average molecular weight/number average molecular weight) is 1.5 to 5. 4 . The ethylene-1-hexene-1-butene terpolymer according to claim 1 , wherein the content of 1-hexene and 1-butene to the total weight of the ethylene-1-hexene-1-butene terpolymer is 5 to 15 wt %. 5 . The ethylene-1-hexene-1-butene terpolymer according to claim 1 , which is prepared by copolymerizing ethylene, 1-hexene, and 1-butene, in the presence of a supported metallocene catalyst that is composed of the outer layer including the area from each surface to ⅓ position of the particle diameter toward the center and the inner layer including the rest area from ⅓ position of the particle diameter to the center, in the cross-section of the supported catalyst particle, and includes the silica carrier on whose inside and surface the alkylaluminoxane is loaded; and one or more metallocene compounds loaded on the silica carrier, wherein the content ratio (wt %) of Al/Si elements of the inner
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Classifications
Manufacture of films or sheets · CPC title
two cyclopentadienyl rings being mutually non-bridged · CPC title
supported on a carrier, e.g. silica, MgCl2, polymer · CPC title
Titanium, zirconium, hafnium or compounds thereof · CPC title
in combination with an organoaluminium compound · CPC title
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- What does patent US2018208693A1 cover?
- The present invention relates to ethylene-1-hexene-1-butene terpolymer and a film including the same. The ethylene-1-hexene-1-butene terpolymer according to the present invention has an optimized range of density and melt index and includes 1-hexene and 1-butene as comonomers, and can provide a polymer showing excellent properties by regulating the content ratio of the comonomers in a certain r…
- 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 Thu Jul 26 2018 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 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).