	US 12,215,179 B2
	Conjugated diene-based polymer, branching agent, production method for conjugated diene-based polymer, oil extended conjugated diene-based polymer, rubber composition, and tire
Shogo Sumitani, Tokyo (JP); Kenta Hisamura, Tokyo (JP); Shinichi Sekikawa, Tokyo (JP); Miki Kyo, Tokyo (JP); and Shuri Tobo, Tokyo (JP)
Assigned to Asahi Kasei Kabushiki Kaisha, Tokyo (JP)
Appl. No. 17/632,873
Filed by Asahi Kasei Kabushiki Kaisha, Tokyo (JP)
PCT Filed Jul. 22, 2020, PCT No. PCT/JP2020/028486 § 371(c)(1), (2) Date Feb. 4, 2022, PCT Pub. No. WO2021/024811, PCT Pub. Date Feb. 11, 2021.
Claims priority of application No. 2019-144669 (JP), filed on Aug. 6, 2019.
Prior Publication US 2022/0275130 A1, Sep. 1, 2022
Int. Cl. C08F 236/10 (2006.01); B60C 1/00 (2006.01); C08C 19/22 (2006.01); C08C 19/25 (2006.01)

CPC C08F 236/10 (2013.01) [B60C 1/00 (2013.01); C08C 19/22 (2013.01); C08C 19/25 (2013.01)]

13 Claims

1. A conjugated diene-based polymer having a branch number (Bn) measured by viscosity detector-equipped GPC-light scattering measurement of 8 or more, having a change (ΔT) of an oxidation onset temperature caused through application of a thermal load of 11.9° C. or less, and comprising an aromatic vinyl compound monomer unit.