Solution type phenolic epoxy resin HWR-638-K80 Used in civil engineering and electronic inks General: HWR-638-K80 is solution type phenolic epoxy resin. It has high crosslinking density, excellent bonding strength, heat resistance and chemical resistance. It is widely used in electronic copper clad laminates, electronic laminates, heat-resistant adhesives, composites, high-temperature coatings, civil engineering and electronic inks. Sale Specification & Typical Properties: