METHOD FOR PREPARING POLYBUTENE

摘要

Disclosed is a method for preparing a highly reactive polybutene of high quality having low fluorine content and high vinylidene content at high mileage of catalyst with economy. The method for preparing a polybutene includes: performing a selective hydrogenation reaction of diolefin among C4 hydrocarbon components produced from petroleum refineries or naphtha cracking centers, which involve cracking of crude oils, and simultaneously an isomerization reaction of 1-butene to 2-butene and then isolating an isobutene feedstock through fractional distillation; and polymerizing the isobutene feedstock obtained by the fractional distillation.