EPOXY RESIN, CURABLE RESIN COMPOSITION AND CURED PRODUCT THEREOF

摘要

DISCLOSED IS A PHENOL ARALKYL EPOXY RESIN HAVING A STRUCTURE WHEREIN AT LEAST A PHENOL OR A NAPHTHOL IS BOUND BY USING AN ARALKYL GROUP AS A LINKING GROUP AND A STRUCTURE REPRESENTED BY FORMULA (1) BELOW, WHILE SATISFYING THE CONDITION 1 BELOW. THIS EPOXY RESIN IS EXCELLENT IN WORKABILITY DURING PRODUCTION OF A COMPOSITION AND IS EASY TO CONTROL QUALITY. CONDITION 1: THE FOLLOWING RELATION (?) IS SATISFIES WITH A BEING THE HYDROXYL EQUIVALENT (AS MEASURED IN ACCORDANCE WITH JIS K 0070) OF A PHENOL-MODIFIED EPOXY RESIN OBTAINED BY ADDING AN EQUIVALENT MOLAR AMOUNT OF PHENOL RELATIVE TO THE EPOXY EQUIVALENT OF THE EPOXY RESIN, AND B BEING THE EPOXY EQUIVALENT OF THE EPOXY RESIN. 150 ? 1000X (A-B)/B ? 250 (?).