PROCESS FOR PRODUCING POLYIMIDE SILOXANE SOLUTION COMPOSITION, AND POLYIMIDE SILOXANE SOLUTION COMPOSITION

摘要

Provided are a process for producing a polyimide siloxane solution composition that has further improved long-term viscosity stability and a polyimide siloxane solution composition. The process for producing a polyimide siloxane solution composition comprises polymerizing/imidizing, in a solvent, a tetracarboxylic acid ingredient and a diamine ingredient comprising (a) a diaminopolysiloxane, (b) a diamine having a polar group, and (c) another diamine, wherein the tetracarboxylic acid ingredient and the diamine ingredient excluding the diamine (b) having a polar group are polymerized/imidized to obtain a liquid reaction mixture, and the diamine (b) having a polar group is added last and polymerized/imidized.