新型银变色抑制剂的研究

Study on New Type Silver Discolour Inhibitor

本文论述了以邻甲基苯胺 ,α 溴乙酸以及硫氰酸铵等为原料 ,制备Ar-NH -CO -CH2 -SH的最佳工艺条件 ,并对该产物的抑制银变色的机理进行了探讨。经实验证明 。

The optimum technolopical conditions in the process of preparation of Ar-NH-CO-CH 2SH from o -methgl aniline,α bromoacetic acid,and ammorium this cyanate were discussed and the mechonism of inhibiting the tarnishing of silver by use of Ar-NH-CO-CH 2SH was examined.Experisments hove showrc that the synthesized compound has good weldability on silver and owtstarding ability for of silver.