... resin produced by C5, C9 fraction, by-products of petroleum cracking, through pretreatment, polymerization and distillation. It isn't ... and alkaline, viscosity adjusting and thermal stabilizing, Generally, the petroleum resins are not used independently, but have to be ... POINT () 90-120ACID VALUE (mgKOH/g) 1.0MAX.ASH CONTENT, % 0.1MAX.APPEARANCE yellow flake or granule petroleum resin C5,C9