A green scale inhibitor of polyaspartic acid (PASP) was prepared from the thermal polycondensation of the monomers maleic anhydride and ammonia water.

• 摘要以马来酸酐和氨水为原料，采用热缩聚反应制备了绿色阻垢剂聚天冬氨酸(PASP)。