- 专利标题： Tetracarboxylic acid dianhydride and method for preparing the same
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申请号： US17371471申请日： 2021-07-09
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公开(公告)号： US11530228B2公开(公告)日： 2022-12-20
- 发明人: So Young Lee , Jong Chan Kim
- 申请人： SK Innovation Co., Ltd. , SK ie technology Co., Ltd.
- 申请人地址： KR Seoul; KR Seoul
- 专利权人： SK Innovation Co., Ltd.,SK ie technology Co., Ltd.
- 当前专利权人： SK Innovation Co., Ltd.,SK ie technology Co., Ltd.
- 当前专利权人地址： KR Seoul; KR Seoul
- 代理机构： The Webb Law Firm
- 优先权： KR10-2020-0085873 20200713,KR10-2021-0056240 20210430
- 主分类号： C07D495/20
- IPC分类号： C07D495/20 ; C07D493/10 ; C08J5/18 ; C08G73/10
摘要：
Provided are a novel tetracarboxylic acid dianhydride and a method for preparing the same. According to an exemplary embodiment of the present invention, a novel tetracarboxylic acid dianhydride appropriate for providing a polyimide film having high transparency and thermal resistance and having excellent thermal dimensional stability due to a substrate of which the stress is not increased even with a heat treatment at a high temperature and a method for preparing the same may be provided.
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