NPPN-638S has two advantageous properties,heat resistively of
phenolic backbone and reactivity of an epoxy.Comparing with BPA-based
epoxides which have two epoxides per molecule,NPPN-638S has an average
of 3.6 epoxy groups per molecule.
NPPN-638S provides tightly cross-linked cured systems having better
elevated temperature performance,chemical resistance and adhesion
than the BPA-based resins.