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US 2023/0416426 A1Published application
Olefin-based polymer, film prepared therefrom, and preparation methods therefor
AssigneeHanwha Solutions Corporation
InventorsUi Gap JOUNG, Munhee LEE, Sung Dong KIM, Seongjae LIM, Hye Ran PARK, Junho SEO
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Abstract
The present invention relates to an olefin-based polymer, a film prepared therefrom, and preparation methods therefor. An olefin-based polymer according to an embodiment of the present invention has excellent processability, and a film prepared therefrom, particularly, a linear low density polyethylene film has excellent mechanical strength and heat sealability, in particular, low-temperature heat sealability.
Claims20
An olefin-based polymer having (1) a density of 0.910 to 0.940 g/cm3;
- (2) a melt index (I2.16) of 0.5 to 2.0 g/10 min as measured with a load of 2.16 kg at 190° C.;
- (3) a ratio between a melt index (I21.6) measured with a load of 21.6 kg and a melt index (I2.16) measured with a load of 2.16 kg at 190° C. (melt flow ratio;
- MFR) of 20 to 60;
- and (4) a comonomer distribution slope (CDS) defined by the following Equation 1 of 3 or more:
- CDS
- =
- log
-
- C
- 8
-
- 0
- -
- log
-
- C
- 2
-
- 0
- log
-
- M
- 8
-
- 0
- -
- log
-
- M
- 2
-
- 0
- [
- Equation
-
- 1
- ]
- wherein C20 and C80 are comonomer contents at points where cumulative weight fractions are 20% and 80%, respectively, in a comonomer distribution, and M20 and M80 are molecular weights at points where cumulative weight fractions are 20% and 80%, respectively, in a comonomer distribution.
35 more elements
Dependencies are inferred from the claim text.