本规范涵盖环氧甲酚酚醛清漆（ECN）树脂形式的预聚物。该产品通常用于制造高温复合基质和粘合树脂，但用途不限于此类应用。

This specification covers a prepolymer in the form of an epoxy cresol novolac (ECN) resin.This product has been used typically in manufacture of high temperature composite matrices and adhesive resins, but usage is not limited to such applications.