| abstract |
A dianhydride monomer, polyimide precursor resin and its solution, polyimide resin and its solution. The present invention provides a tetracarboxylic acid anhydride, which is characterized by the following general formula (1) In the formula, wherein, L is a single bond or a bond with an adjacent atom to form a ring, or L is a 1-55 arylene group, a heteroarylene group, or the like. R1 and R2 are the same or different, and are respectively selected from hydrogen atoms or electron withdrawing groups. Further, a polyimide precursor resin prepared from the above acid anhydride and a solution thereof, and a polyimide resin and a solution thereof are provided. |