Patent ID: 11884777
Assignee: LG CHEM, LTD.
Field: Macromolecular chemistry, polymers (Chemistry)
Classification: CPC C | IPC C

Claim 12:
13. A method of preparing a polycarbonate, comprising a step of polymerizing a composition containing a compound of the following Chemical Formula 1, an aromatic diol compound of the following Chemical Formula 2 and a carbonate precursor:, wherein in Chemical Formula 1:
R is a divalent group derived from benzene, unsubstituted biphenyl, terphenyl, or naphthalene; C3-20 cycloalkylene unsubstituted or substituted with C1-10 alkyl; or C3-20 heterocycloalkylene unsubstituted or substituted with C1-10 alkyl; and
n and m are each independently an integer from 1 to 1,000,, wherein in Chemical Formula 2:
R1 to R4 are each independently hydrogen, C1-10 alkyl, C1-10 alkoxy, or halogen; and
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.