POLYIMIDE PRECURSOR, POLYIMIDE, POLYIMIDE FILM, AND METHOD FOR MANUFACTURING TRIAZINE COMPOUND USED FOR MANUFACTURING SAME

摘要

Disclosed are a polyimide precursor for obtaining a polyimide film having excellent adhesiveness with respect to metals and improved transmissivity in the UV-visible range, a polyimide in which the polyimide precursor is used, a polyimide film in which the polyimide is used, and a method for manufacturing a triazine compound used in the manufacture of these materials. The polyimide precursor has a structural unit represented by general formula (I) (in the formula, A is a tetravalent aromatic group or aliphatic group, and B is a divalent aromatic group), the polyimide precursor characterized in comprising a triazine substructure represented by general formula (B1) (in the formula, R1 is a hydrogen, or a C1-C12 alkyl or aryl; and R2 is a hydrogen or a C1-C12 alkyl or aryl) as group B in the general formula (I).