BLEACHING ACTIVATORS AND THE MECHANISM OF BLEACHING ACTIVATION

被引：70

作者：

HOFMANN, J ^{[1
]}

JUST, G ^{[1
]}

PRITZKOW, W ^{[1
]}

SCHMIDT, H ^{[1
]}

机构：

[1] TECH UNIV MERSEBURG,INST TECH CHEM,DEPT CHEM,O-4200 MERSEBURG,GERMANY

来源：

JOURNAL FUR PRAKTISCHE CHEMIE-CHEMIKER-ZEITUNG | 1992年 / 334卷 / 04期

关键词：

D O I：

10.1002/prac.19923340402

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

Bleaching activators are compounds with O- or N-bounded acetyl groups which are able to react with the strongly nucleophilic hydroperoxy anion to yield peroxyacetic acid. The peroxyacetic acid is decomposed in weakly basic media in a bimolecular reaction forming singlet oxygen. The maximum of the decomposition rate of peroxyacetic acid at pH = 8.3 is also the maximum of bleaching activity of systems containing both bleaching activators and sodium perborate; therefore singlet oxygen must play a decisive role in the activated bleaching of textiles during the washing process. Different bleaching activators can be compared both on the basis of their reaction rates with hydrogen peroxide in weakly basic media and on the basis of their reaction rates with piperidine in dioxane. A great number of potential bleaching activators was studied and compared.

引用

页码：293 / 297

页数：5

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