Invention Application
- Patent Title: METHOD FOR SEPARATING ORGANOZINC CATALYST FROM POLYALKYLENE CARBONATE POLYMERIZATION SOLUTION
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Application No.: US17437907Application Date: 2020-09-28
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Publication No.: US20220143589A1Publication Date: 2022-05-12
- Inventor: Kyung Min MIN , Seung Young PARK , Sung Kyoung KIM , Sang Cheol SHIN , Won Seok KIM , Won Hee WOO
- Applicant: LG CHEM, LTD.
- Applicant Address: KR Seoul
- Assignee: LG CHEM, LTD.
- Current Assignee: LG CHEM, LTD.
- Current Assignee Address: KR Seoul
- Priority: KR10-2019-0120841 20190930
- International Application: PCT/KR2020/013223 WO 20200928
- Main IPC: B01J31/12
- IPC: B01J31/12 ; C08G64/40 ; C08F6/02
Abstract:
The present invention relates to a method for separating an organozinc catalyst from a polyalkylene carbonate polymerization solution, and the method of the present invention includes: stirring and aging a polymerization solution including a polyalkylene carbonate resin, an organozinc catalyst, an alkylene oxide and a polymerization solvent; and filtering the polymerization solution after completing the aging.
Public/Granted literature
- US12076714B2 Method for separating organozinc catalyst from polyalkylene carbonate polymerization solution Public/Granted day:2024-09-03
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