| abstract |
A precursor composition for obtaining a polyimide having excellent physical properties and a method for producing a polyimide including a step of polymerizing the precursor composition are provided. A precursor composition comprising an amic acid oligomer of the following general formula (1) and a dianhydride derivative having an ester end group and a carboxy end group. In the formula, G represents a tetravalent organic group, P represents a divalent organic group, D represents each independently a nitrogen-containing heterocyclic group or an OR * -containing group, and R * represents 1 to It is a linear or branched alkyl having 20 carbon atoms, and m is an integer of 1 to 100. [Selection figure] None |