PRODUCTION OF PHENOLIC RESIN MOLDING MATERIAL

摘要

PURPOSE:To improve the storage stability of a resol resin as the material of a phenolic resin molding material, to improve the storage stability of a molding material containing the resol resin, and to shorten the time necessary to mold the molding material. CONSTITUTION:A tert. amine [e.g. (C2H5)3N] having a small reaction accelerating effect is used as a catalyst for the synthesis of a resol resin. When a molding material is produced by adding a filler to the resol resin and kneading the resulting mixture under agitation, an alkaline earth metal hydroxide [e.g. Ca(OH)2] having a large reaction accelerating effect is used as a cure accelerator.