	US 11,718,693 B2
	Ethylene/alpha-olefin copolymer and method for preparing the same
Rae Keun Gwak, Daejeon (KR); Seung Hwan Jung, Daejeon (KR); Jin Sam Gong, Daejeon (KR); Jung Ho Jun, Daejeon (KR); Choong Hoon Lee, Daejeon (KR); Eun Jung Lee, Daejeon (KR); Hyun Jin Ju, Daejeon (KR); In Sung Park, Daejeon (KR); and Sang Eun Park, Daejeon (KR)
Assigned to LG Chem, Ltd.
Appl. No. 17/45,658
Filed by LG Chem, Ltd., Seoul (KR)
PCT Filed May 3, 2019, PCT No. PCT/KR2019/005362 § 371(c)(1), (2) Date Oct. 6, 2020, PCT Pub. No. WO2019/212303, PCT Pub. Date Nov. 7, 2019.
Claims priority of application No. 10-2018-0052046 (KR), filed on May 4, 2018.
Prior Publication US 2021/0155727 A1, May 27, 2021
This patent is subject to a terminal disclaimer.
Int. Cl. C08F 210/16 (2006.01); C09J 123/08 (2006.01)

CPC C08F 210/16 (2013.01) [C09J 123/0815 (2013.01); C08F 2500/17 (2013.01); C08F 2500/18 (2013.01); C09J 2301/304 (2020.08)]

20 Claims

1. An ethylene/alpha-olefin copolymer satisfying the following conditions i) to iv):

i) a density: 0.85 to 0.89 g/cc, measured according to ASTM D-792,

ii) a molecular weight distribution (MWD): 1.5 to 3.0,

iii) a viscosity: 6,000 cP to 40,000 cP, when measured at a temperature of 180° C., and

iv) a crystallization index (CI) according to the following Equation 1: 15 to 25,

CI=A³/B [Equation 1]

in Equation 1,

A is full width at half maximum (FWHM) of a peak shown during measuring crystallization temperature, and

B is a numerical value measured as melt index (MI) according to ASTM D-1238 (condition E, 190° C., 2.16 kg load), wherein the numerical value has a unit of “dg/min”.