US 11,702,497 B2
Modified conjugated diene-based polymer and method for preparing same
Soo Yong Lee, Daejeon (KR); Dong Gil Lee, Daejeon (KR); Won Mun Choi, Daejeon (KR); and Seung Ho Choi, Daejeon (KR)
Assigned to LG Chem, Ltd.
Appl. No. 17/251,578
Filed by LG Chem, Ltd., Seoul (KR)
PCT Filed Dec. 20, 2019, PCT No. PCT/KR2019/018255
§ 371(c)(1), (2) Date Dec. 11, 2020,
PCT Pub. No. WO2020/130738, PCT Pub. Date Jun. 25, 2020.
Claims priority of application No. 10-2018-0167686 (KR), filed on Dec. 21, 2018.
Prior Publication US 2021/0253767 A1, Aug. 19, 2021
Int. Cl. C08F 236/06 (2006.01); C08F 136/06 (2006.01); C08C 19/28 (2006.01)
CPC C08F 236/06 (2013.01) 17 Claims
 
1. A modified conjugated diene-based polymer represented by the following Formula 1, wherein
a terminal of a polymer chain is modified:

OG Complex Work Unit Chemistry
in Formula 1,
A is a hydrocarbon unit of 2 to 12 carbon atoms, or a hydrocarbon unit of 2 to 12 carbon atoms including one or more heteroatoms of N or O,
Rx is hydrogen or a methyl group, and
n is an integer of 2 to 6.