PHENOLIC RESIN COMPOSITION FOR SHELL MOLDING,RESIN COATED SAND FOR SHELL MOLDING, AND SHELL MOLD FORMED OF THE SAME

摘要

PROVIDED ARE A PHENOLIC RESIN COMPOSITION FOR SHELL MOLDING THAT HAS LOW THERMAL EXPANSION PROPERTIES AND HIGH FLEXIBILITY, A RESIN COATED SAND FOR SHELL MOLDING OBTAINED BY USING THE SAME, AND A SHELL MOLD FORMED OF THE SAME. THE PHENOLIC RESIN COMPOSITION FOR SHELL MOLDING THAT IS CAPABLE OF EXHIBITING ADVANTAGEOUS MOLD CHARACTERISTIC IS OBTAINED BY A COMBINATION OF A PHENOLIC RESIN THAT IS OBTAINED BY A REACTION OF A PHENOL, A NAPHTHOL, AND AN ALDEHYDE, AND A FATTY ACID AMIDE.