公开(公告)号：US20240158578A1

公开(公告)日：2024-05-16

申请号：US18546390

申请日：2022-02-17

申请人： UBE Corporation

发明人： Takuya OKA ,  Yuki NEMOTO ,  Yukinori KOHAMA ,  Taichi ITO

IPC分类号： C08G73/10 ,  C08J5/18 ,  C08K5/3447 ,  C08L79/08

CPC分类号： C08G73/1078 ,  C08G73/1032 ,  C08G73/105 ,  C08J5/18 ,  C08K5/3447 ,  C08L79/08 ,  C08J2479/08 ,  C08L2201/10 ,  C08L2203/16 ,  C08L2203/20

摘要： A precursor composition which can produce a polyimide film with excellent light transmittance, mechanical properties, coefficient of linear thermal expansion and resistance to thermal decomposition; and a polyimide film obtained from the precursor composition. The polyimide precursor composition contains a polyimide precursor with a repeating unit represented by formula (I); an imidazole compound in an amount more than 0.01 mol and 2 mol or less based on one mol of the repeating units of the polyimide precursor, and a solvent.




In general formula I, 70 mol. % or more of X1 is a structure represented by formula (1-1):




and 70 mol % or more of Y1 is a structure represented by formula (D-1) and/or (D-2):