The olefines (mainly C4 olefines)in the liquefied petroleum gas under the action of a selective catalyst were polymerized to form heigher molecular weight diners and trimers.

• 石油液化气中的烯烃(主要是碳四烯烃)在定向催化剂的作用下,选择叠合成分子量较大的聚合体。