And some physical constants(bp.n_D~(20))of these esters were determined. Ex- perimental parameters(catalyst,azeotropic agent,reaction temperature,ete.) were exam- incd,Some interesting results are obtained.

• 所有制备的羧酸酯均进行了物理常数(bp；n_D~(20))测定；文中对影响反应的催化剂用量；带水剂种类；催化剂使用寿命等诸因素；进行了研究和探讨；得到了有意义的结果.