US 11,680,160 B2
Polyolefin resin composition and production method of same
Jang Woo Lee, Daejeon (KR); Byung Keel Sohn, Daejeon (KR); Sah Mun Hong, Daejeon (KR); Da Jung Kim, Daejeon (KR); Hee Jun Lee, Sejong-si (KR); Sung Ho Choi, Sejong-si (KR); and Su Hyun Park, Busan (KR)
Assigned to DL CHEMICAL CO., LTD., Seoul (KR)
Appl. No. 17/44,505
Filed by DL CHEMICAL CO., LTD., Seoul (KR)
PCT Filed Apr. 2, 2019, PCT No. PCT/KR2019/003896
§ 371(c)(1), (2) Date Oct. 1, 2020,
PCT Pub. No. WO2019/194547, PCT Pub. Date Oct. 10, 2019.
Claims priority of application No. 10-2018-0039862 (KR), filed on Apr. 5, 2018.
Prior Publication US 2021/0115236 A1, Apr. 22, 2021
Int. Cl. C08F 210/16 (2006.01); C08L 23/20 (2006.01); C08J 5/18 (2006.01); C08F 2/00 (2006.01)
CPC C08L 23/20 (2013.01) [C08F 210/16 (2013.01); C08J 5/18 (2013.01); C08F 2/001 (2013.01); C08F 2500/10 (2013.01); C08F 2500/12 (2013.01); C08F 2500/37 (2021.01); C08J 2323/20 (2013.01); C08J 2423/20 (2013.01); C08L 2203/16 (2013.01); C08L 2205/025 (2013.01); C08L 2207/062 (2013.01)] 9 Claims
 
1. A polyolefin resin satisfying following properties (1) to (6):
(1) melt index (MI2.16, 190° C., under a load of 2.16 kg) is 0.1 to 1.5 g/10 min;
(2) density is 0.91 to 0.93 g/cc;
(3) polydispersity Indexe (weight-average molecular weight/number-average molecular weight (Mw/Mn)) is 3 to 7;
Z-average molecular weight/weight average molecular weight (Mz/Mw) is 2.3 to 4.5;
(5) Comonomer Orthogonal Index (COI) value calculated by the following Equation 1 is 5 to 12; and
(6) when a temperature rising elution fractionation (TREF) curve of multimodal distribution is deconvoluted, an area of the TREF curve having a peak at 60 to 70° C. is 40 to 65% of a total area of the TREF curve of multimodal distribution,

OG Complex Work Unit Math
in Equation 1, “SCB” represents an average number of short chain branches, “SCB number at Mz” represents average number of short chain branches derived from comonomers per 1000 carbon atoms at Z-average molecular weight (Mz), and “SCB number at Mn” represents average number of short chain branches derived from comonomers per 1000 carbon atoms at number-average molecular weight (Mn) when a molecular weight-comonomer distribution graph was prepared in which log value (log Mw) of molecular weight (Mw) is marked in x-axis of the graph and the amount of polymer (dw_dlog Mw) corresponding to the log value (log Mw) and average number of short chain branches (SCB) derived from comonomer (number of branches per 1,000 carbon atoms, unit: number/1,000 C) corresponding to the log value (log Mw) are marked in y-axis of the graph, and wherein melt flow rate ratio (MFRR; MI21.6/MI2.16, the MI21.6 is a melt index measured at 190° C. and 21.6 kg load condition) is 17 to 40.