	US 12,215,251 B2
	Hot-melt adhesive composition and manufacturing method therefor
Se Kyung Lee, Daejeon (KR); Tae Jung Kim, Daejeon (KR); Hyun Woo Kim, Daejeon (KR); and Seong Du Lee, Daejeon (KR)
Assigned to LG Chem, Ltd., Seoul (KR)
Appl. No. 17/421,089
Filed by LG Chem, Ltd., Seoul (KR)
PCT Filed Aug. 12, 2020, PCT No. PCT/KR2020/010682 § 371(c)(1), (2) Date Jul. 7, 2021, PCT Pub. No. WO2021/071079, PCT Pub. Date Apr. 15, 2021.
Claims priority of application No. 10-2019-0124524 (KR), filed on Oct. 8, 2019; and application No. 10-2020-0098993 (KR), filed on Aug. 7, 2020.
Prior Publication US 2022/0089921 A1, Mar. 24, 2022
Int. Cl. C09J 153/02 (2006.01); C08K 5/01 (2006.01)

CPC C09J 153/02 (2013.01) [C08K 5/01 (2013.01)]

13 Claims

1. A hot melt adhesive composition comprising:

a diblock copolymer including a styrene-based monomer-derived unit and a conjugated diene-based monomer-derived unit;

a triblock copolymer which is a coupled polymer of the diblock copolymer; and

a crosslinked block copolymer including a crosslinking agent-derived crosslinked part crosslinked with two or more of the diblock copolymers and the triblock copolymers,

wherein the crosslinking agent-derived crosslinked part is one or more selected from the group consisting of polyalkylene glycol and ethylene glycol, and

wherein the conjugated diene-based monomer-derived unit includes an isoprene-derived unit and an epoxidized isoprene unit represented by the following chemical formula 1: