	US 12,116,483 B2
	Conjugated diene-based copolymer composition, method of preparing the same, and rubber composition including the same
In Sung Jo, Daejeon (KR); Byoung Yun Kim, Daejeon (KR); Hyung Woon Yoon, Daejeon (KR); Se Eun Lee, Daejeon (KR); and Woo Seok Choi, Daejeon (KR)
Assigned to LG Chem, Ltd., Seoul (KR)
Appl. No. 17/299,133
Filed by LG Chem, Ltd., Seoul (KR)
PCT Filed Sep. 2, 2020, PCT No. PCT/KR2020/011743 § 371(c)(1), (2) Date Jun. 2, 2021, PCT Pub. No. WO2021/071096, PCT Pub. Date Apr. 15, 2021.
Claims priority of application No. 10-2019-0126418 (KR), filed on Oct. 11, 2019; and application No. 10-2020-0105337 (KR), filed on Aug. 21, 2020.
Prior Publication US 2022/0073708 A1, Mar. 10, 2022
Int. Cl. C08L 9/06 (2006.01); B60C 1/00 (2006.01); C08F 2/22 (2006.01); C08F 220/20 (2006.01); C08K 3/36 (2006.01)

CPC C08L 9/06 (2013.01) [C08F 2/22 (2013.01); C08F 220/20 (2013.01); C08K 3/36 (2013.01); B60C 1/00 (2013.01); C08L 2205/025 (2013.01)]

13 Claims

1. A conjugated diene-based copolymer composition comprising:

a first conjugated diene-based copolymer and a second conjugated diene-based copolymer each including a repeating unit derived from an aromatic vinyl monomer, a repeating unit derived from a conjugated diene-based monomer, and a repeating unit derived from a hydroxyalkyl (meth)acrylate monomer,

wherein the first conjugated diene-based copolymer includes 0.01 wt % to 0.5 wt % of the repeating unit derived from the hydroxyalkyl (meth)acrylate monomer, and the second conjugated diene-based copolymer includes 4.5 wt % to 6.5 wt % of the repeating unit derived from the hydroxyalkyl (meth)acrylate monomer.