金属离子Cr^(3+)在染黑色革中的应用

Application of Metal Ion Cr^(3+) in Dyeing Black Leather

本文通过分光光度法 ,pH电位滴定等分析方法研究了金属离子Cr3+与常用黑色染料的作用机理。结果表明 :皮革染色中加入金属离子Cr3+,可以改变染料溶液的性质 ;染料的活性基团、皮胶原纤维活性基团与金属离子形成了混合络合物。

In this paper, action mechanisms on metal ion (Cr 3+ ) and the conventional black dyestuffs were investigated through the spectrophometric method & pH potentrionmetric titration. The result showed the addition of metal ion (Cr 3+ ) during the dyeing step may change the properties of dyeing bath. The functional groups of the penetrated dyestuff and hide fiber could form the mixed complex with metal ion, which improved the fastness to rubbing