申请人:Daxin Materials Corporation
公开号:US20200392290A1
公开(公告)日:2020-12-17
A poly(amide-imide) copolymer, a composition for a thin film, and a thin film are provided. The poly(amide-imide) copolymer is synthesized by polymerization, dehydration cyclization, and hydrolysis condensation of an aromatic diamine monomer, a diacyl chloride monomer, a tetracarboxylic dianhydride monomer, and a silane compound having an alkoxy group as an end-capping agent. The aromatic diamine monomer includes 2,2′-bis(trifluoromethyl)benzidine. Based on a usage amount of 100 mol % of the aromatic diamine monomer, a usage amount of the 2,2′-bis(trifluoromethyl)benzidine is 70 mol % or more.