| abstract |
(57) Abstract: Component a: polybutadiene (number average molecular weight 3 000 or less, hydroxyl groups or epoxy groups at both molecular ends, component b: bisphenol resin (hydroxyl groups or epoxy groups at both molecular ends), and component c: diisocyanate compound, polyfunctional amine, dicarboxylic acid or glycols Using the resulting BAB type block copolymer (A: polybutadiene skeleton, B: bisphenol skeleton), component a Method for compatibilizing polybutadiene skeleton in epoxy resin. [Effect] The BAB type block copolymer can be compatibilized with the epoxy resin in an arbitrary composition, and the compatibilized product is stable for a long period of time. |