Alx, -1204 petroleum resins from aliphatic c5 fraction after separation and purification concentrated piperylene to catalytic polymerization of a synthetic resin, a low molecular weight, thermoplastic hydrocarbon resin is light, can be provided with natural rubber, a butyl rubber , sis polybutene, atactic polypropylene, low density polyethylene, and good compatibility. Hot melt adhesives, Pressure sensitive adhesives, Seals 25kg/bag
