Abstract: Copolyamide hot-melt adhesives were synthesized by caprolactam, nylon 66 salt, nylon 610 salt, decane diamine, sebacic acid, etc. The results indicated that melting point of the copolymers varied with the mass ratio of the raw materials and may have a lower limit under certain conditions. No matter how the mass ratio of the raw materials changed, the melting point of the copolymers was always lower than that of the homopolyamide.
Keywords:Copolyamide; Hot-melt; Synthesis ; Melting point