	US 12,187,824 B2
	Polyolefin and method for preparing same
Na Yeun Kim, Daejeon (KR); Sung Hae Jun, Suwon (KR); Eun Jung Heo, Daejeon (KR); and Ji Sung Kim, Seoul (KR)
Assigned to HANWHA SOLUTIONS CORPORATION, Seoul (KR)
Appl. No. 17/296,991
Filed by HANWHA SOLUTIONS CORPORATION, Seoul (KR)
PCT Filed Sep. 17, 2019, PCT No. PCT/KR2019/012003 § 371(c)(1), (2) Date May 26, 2021, PCT Pub. No. WO2020/122371, PCT Pub. Date Jun. 18, 2020.
Claims priority of application No. 10-2018-0158913 (KR), filed on Dec. 11, 2018.
Prior Publication US 2021/0395412 A1, Dec. 23, 2021
Int. Cl. C08F 210/16 (2006.01); C08F 4/659 (2006.01); C08F 4/6592 (2006.01)

CPC C08F 210/16 (2013.01) [C08F 4/65912 (2013.01); C08F 4/65927 (2013.01)]

8 Claims

1. A method for preparing a polyolefin, the method comprising: forming a polyolefin by polymerizing an olefin-based monomer and a comonomer in the presence of an olefin polymerization catalyst comprising a transition metal compound represented by the following Formula 1-2,

wherein the polyolefin has a viscosity ranging from 5000 cP to 10000 cP, as measured at 177° C.:

in Formula 1-2,

M is zirconium (Zr) or hafnium (Hf),

X is each independently a halogen or a C_1-20alkyl.