Abstract
SynopsisSolvent soluble branched imide resin was successfully synthesized from isocyanurates and anhydrides. This imide resin is soluble in general organic solvents such as methyl ethyl ketone cyclohexanone, propylene glycol methyl ether acetate, and so on. The branched imide resin having carboxylic groups at the chain terminals was cured with epoxy resins to give the film of excellent thermal resistance. For example, Tg of the film cured at 170℃ with o-cresole novolac type epoxy resin is 265℃. Furthermore, transparent colorless imide resin with branched structure was also successfully synthesized. It was considered that these properties come from branched structure of imide resins.
