METHOD OF PRODUCING POLYIMIDE RESIN METHOD OF PRODUCING POLYIMIDE COATING METHOD OF PRODUCING POLYAMIC ACID SOLUTION POLYIMIDE COATING AND POLYAMIC ACID SOLUTION

摘要

[assignment] A method for producing a polyimide resin that provides a polyimide resin having excellent heat resistance and mechanical properties and a low dielectric constant even after heat treatment at a low temperature; a polyimide film manufacturing method that provides a polyimide film having excellent heat resistance and mechanical properties and a low dielectric constant even with heat treatment at a low temperature; a method for preparing a polyamic acid solution providing the polyimide resin; a polyimide film obtained by the method for producing a polyimide resin; And it provides a polyamic acid solution obtained by the method for preparing the polyamic acid solution. [Solution] In the method for producing a polyimide resin according to the present invention, a polyamic acid obtained by reacting a tetracarboxylic dianhydride component and a diamine component in a solvent containing at least the compound (A) represented by the following general formula (1) is heated at 120 to 350 ° C. including the process of In the formula, R 1 represents a hydrogen atom or a hydroxyl group, R 2 and R 3 independently represent a hydrogen atom or a C 1 toC 3 alkyl group, and R 4 and R 5 are independently C 1to C 3 represents an alkyl group.