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US 12,655,279 B2Granted
Ethylene/alpha-olefin copolymer and method for preparing the same
AssigneeLG Chem, Ltd.
InventorsSeul Ki Kim, Hae Woong Park, Young Woo Lee, Ki Eun Kim, Choong Hoon Lee
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Abstract
The present invention provides an ethylene/alpha-olefin copolymer satisfying the following conditions (a) to (d): (a) density: 0.850 to 0.910 g/cc, (b) melt index (MI, 190° C., 2.16 kg load conditions): 0.1 to 100 dg/min, (c) molecular weight distribution (MWD): 1.5 to 3.0, and (d) a Rv value of 0.18 to 0.59.
Claims19
An ethylene/1-butene copolymer satisfying the following conditions (a) to (d):
- (a) density measured according to ASTM D-792:
- 0.850 to 0.910 g/cc,
- (b) melt index (MI, 190° C., 2.16 kg load conditions):
- 0.1 to 100 dg/min,
- (c) molecular weight distribution (MWD):
- 1.5 to 3.0, and
- (d) a Rv value according to Equation 1 below of 0.18 to 0.46:
- R
- v
- =
- N
- v
- N
- v
-
- d
- +
- N
- tv
- +
- N
- v
-
- l
- +
- N
- v
- [
- Equation
-
- 1
- ]
- in Equation 1,
- Nvd, Ntv, Nvl and Nv are the number of vinylidene, trivinyl, vinylene and vinyl functional groups per 1000 carbon atoms, respectively, measured by nuclear magnetic spectroscopy using Bruker AVANCE III 500 MHz NMR equipment at 393 K, after dissolving the copolymer in a 1,1,2,2-tetrachloroethane D2 (TCE-d2) solvent,
- wherein the number of vinyl functional groups per 1000 carbon atoms, measured by nuclear magnetic spectroscopy analysis, is 0.01 to 0.3.
32 more elements
Dependencies are inferred from the claim text.