Development of High Thermal Resistant Hardener using C-Methylcalix[4] Resorcinarene Derivatives for Epoxy Thermosetting Resin System

Abstract

Synthesis and physical properties of C-methylcalix[4]resorcinarene (CRA) derivatives were examined relevant to novel cross-linkers for epoxy thermosetting resin system. The CRA derivatives were synthesized by the reaction of CRA with glycidyl phenyl ether (PGE), acetyl chloride (AC), and allyl bromide, yielding CRA−PGE, CRA−AC, and CRA−AE, respectively. Among them, CRA−AE had better solubility and flowability. Furthermore, the curing material could be obtained by epoxy thermosetting system using CRA−AE, and its no T_g could be shown, i.e., it is a T_g-less cured resin.