METHODS: The chelating agent of the cement Calar, 1-hydroxy-2-ethylexyl salicylate, was synthesized by transesterification reaction between methyl salicylate and 1,3-butylenes glycol.

• 方法 :由水杨酸甲酯和 1,3-丁二醇在催化剂的作用下通过酯交换制成凝固螯合剂水杨酸 1,3-丁二醇酯 ,参照国外有关配方配制成Calar双糊剂型自凝氢氧化钙水门汀。