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1. (WO2018124613) METHOD FOR PREPARING AROMATIC CARBONIC ACID DIESTER

Pub. No.:    WO/2018/124613    International Application No.:    PCT/KR2017/015149
Publication Date: Fri Jul 06 01:59:59 CEST 2018 International Filing Date: Thu Dec 21 00:59:59 CET 2017
IPC: C07C 67/02
C07C 67/62
C07C 69/76
B01J 31/22
Applicants: LOTTE ADVANCED MATERIALS CO., LTD.
롯데첨단소재(주)
Inventors: BAE, Jin Yong
배진용
SEO, Myoung Do
서명도
LEE, Seung Hwan
이승환
CHI, Jun Ho
지준호
Title: METHOD FOR PREPARING AROMATIC CARBONIC ACID DIESTER
Abstract:
A method for preparing an aromatic carbonic acid diester of the present invention comprises the steps of: performing a transesterification reaction of an aliphatic carbonic acid diester and an aromatic alcohol in the presence of an organic metal catalyst to prepare a reaction mixture; separating, from the reaction mixture, the aromatic carbonic acid diester and a carbonate reaction byproduct containing the organic metal catalyst; mixing a polar solvent with the carbonate reaction byproduct containing the organic metal catalyst to prepare a first reaction product in which the byproduct is dissolved; adding a non-polar solvent to the first reaction product to precipitate the organic metal catalyst; and recovering the precipitated organic metal catalyst and introducing the precipitated organic metal catalyst into the transesterification reaction.