C9 HC9120 Hydrocarbon Resin is a low molecular weight thermoplastic aromatic resin. Cold polymerized petroleum resin HC9120 is prepared by low temperature catalytic polymerization of C9 fraction,which is a byproduct of ethylene plant. HC9120 is yellow granular solid, transparent and glossy, with good solubility, mutual solubility, water resistance, insulation, excellent chemical stability to acid and alkali, good adhesion and low thermal conductivity.