Invention Grant
- Patent Title: Dianhydride analysis method
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Application No.: US16959489Application Date: 2019-09-23
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Publication No.: US11639917B2Publication Date: 2023-05-02
- Inventor: Joon Seok Lee , So Yeon Kim , Bumgyu Choi , Byoung Hyoun Kim
- Applicant: LG Chem, Ltd.
- Applicant Address: KR Seoul
- Assignee: LG Chem, Ltd.
- Current Assignee: LG Chem, Ltd.
- Current Assignee Address: KR Seoul
- Agency: Lerner David LLP
- Priority: KR10-2018-0114783 20180927,KR10-2019-0115730 20190920
- International Application: PCT/KR2019/012234 WO 20190923
- International Announcement: WO2020/067680 WO 20200402
- Main IPC: G01N30/34
- IPC: G01N30/34 ; G01N30/36 ; G01N30/74 ; G01N30/64
Abstract:
The present invention relates to a dianhydride analysis method, which can reliably analyze a dianhydride having high reactivity and low solubility. In addition, the present invention can analyze the structure of impurities by separating the impurities on the basis of having a similar retention time in HPLC analysis, and can analyze the purity of the dianhydride with or without chromophores.
Public/Granted literature
- US20210072200A1 Dianhydride Analysis Method Public/Granted day:2021-03-11
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