The cation ring opening polymerization of the monomer(ECH) is carried out by using a catalyst SnCl 4 to obtain the polyepichlorohydrin(PECH) prepolymer , with the prepolymer PECH reacting on NaN 3 in organic solvent DMSO.

• 用阳离子聚合合成端羟基聚环氧氯丙烷（PECH），然后采用大分子基团取代的方法，让PECH和NaN3在非质子极性溶剂DMSO中反应合成叠氮粘合剂GAP。