In this paper, the new chelating resin (PSIM) with a polythioether backbone bearing imidazole group is first synthesized by the reaction between polychloromethylthiirane and imidazole.

通过聚环硫氯丙烷与咪高分子反应，成了以聚硫链、侧链带有咪基团的螯树脂（简称PSIM）。