... fraction,by products of petroleum cracking,through pretreatment,polymerization and distillation. It isn't a high polymer but ... It has the chemical stabilizing property to acid and alkaline, viscosity adjusting and thermal stabilizing,Generally, the resins are not ... kinds of resins as promoters,adjusting agents and modifiers in Hot Melt Adhesive,Hot Melt Pressure Sensitive Adhesive,Adhesive Package.