US 12,312,322 B2
Diol compound, polycarbonate, and preparation method thereof
Dayoung Lee, Daejeon (KR); Ki Jae Lee, Daejeon (KR); Mooho Hong, Daejeon (KR); Young Young Hwang, Daejeon (KR); Youngwook Son, Daejeon (KR); and Daehyeon Hwang, Daejeon (KR)
Assigned to LG Chem, Ltd., Seoul (KR)
Appl. No. 17/611,057
Filed by LG CHEM, LTD., Seoul (KR)
PCT Filed Sep. 3, 2020, PCT No. PCT/KR2020/011857
§ 371(c)(1), (2) Date Nov. 12, 2021,
PCT Pub. No. WO2021/045527, PCT Pub. Date Mar. 11, 2021.
Claims priority of application No. 10-2019-0110305 (KR), filed on Sep. 5, 2019; and application No. 10-2020-0111774 (KR), filed on Sep. 2, 2020.
Prior Publication US 2022/0251056 A1, Aug. 11, 2022
Int. Cl. C08G 63/64 (2006.01); C07D 307/68 (2006.01); C07D 333/38 (2006.01); C08G 64/08 (2006.01); C08G 64/24 (2006.01); C08G 64/30 (2006.01)
CPC C07D 307/68 (2013.01) [C07D 333/38 (2013.01); C08G 63/64 (2013.01); C08G 64/081 (2013.01); C08G 64/24 (2013.01); C08G 64/305 (2013.01)] 12 Claims
 
1. A polycarbonate comprising:
a repeating unit derived from a diol compound represented by Chemical Formula 1;
a repeating unit derived from a compound represented by Chemical Formula 2; and
a carbonate precursor-derived repeating unit:

OG Complex Work Unit Chemistry
wherein, in Chemical Formula 1,
X is —O— or —S—,
R is C6-60 arylene unsubstituted or substituted with C1-10 alkyl, and
n is an integer of 1 to 100,

OG Complex Work Unit Chemistry
wherein, in Chemical Formula 2,
R1 to R4 are each independently hydrogen, C1-10 alkyl, C1-10 alkoxy, or halogen,
Z is C1-10 alkylene unsubstituted or substituted with phenyl, C3-15 cycloalkylene unsubstituted or substituted with C1-10 alkyl, O, S, SO, SO2, or CO.