ALX?-1101 C5 Petroleum resin by-product between the ethylene-aliphatic-pentadiene through the catalytic polymerization of a thermoplastic resin, a low molecular weight, light-colored thermoplastic hydrocarbon resins, natural rubber, butyl rubber, SIS polybutene, low density polyethylene and a random polypropylene excellent compatibility. enhance tack and adhesion. used in hot melt adhesives, pressure sensitive adhesives, seals and so on.