Invention Grant
- Patent Title: Polyamide-imide resin film
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Application No.: US16630242Application Date: 2018-12-07
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Publication No.: US11407858B2Publication Date: 2022-08-09
- Inventor: Byungguk Kim , Youngsik Eom , Sanggon Kim , Yunah Yu , Hyungsam Choi
- Applicant: LG CHEM, LTD.
- Applicant Address: KR Seoul
- Assignee: LG CHEM, LTD.
- Current Assignee: LG CHEM, LTD.
- Current Assignee Address: KR Seoul
- Agency: Rothwell, Figg, Ernst & Manbeck, P.C.
- Priority: KR10-2018-0002877 20180109
- International Application: PCT/KR2018/015463 WO 20181207
- International Announcement: WO2019/139257 WO 20190718
- Main IPC: C08J5/18
- IPC: C08J5/18 ; C08G73/14
Abstract:
The present invention relates to a polyamide-imide resin film having a low birefringence index, including: a polyamide-imide block copolymer containing an amide repeating unit to which an isophthaloyl group and an aromatic diamine residue are bonded; an imide repeating unit; and a trivalent functional group containing an aromatic tricarbonyl group.
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