Waterborne polyurethane (WPU) was prepared from polyether diol (N220) and tolylene di-isocyanate (TDI) as raw material, and epoxy soybean oil (ESO) as modifying agent.

• 摘要以聚氧化丙烯二醇、甲苯二异氯酸酯等为原料，以环氧大豆油为改性剂制备出环氧大豆油改性聚氨酯乳液，以该乳液配制出复合软包装膜用水性聚氨酯胶粘剂。