Novel dyeing process employing oxidizable aza type mordant dyes

摘要

In the present invention, it is disclosed a kind of dyeing animal substrate, a kind of especially woolen dyed animal origin, it is characterized in that, using the type of oxidable mordant dyeing pyrrole, currently used chromate Cre6+ (salt) is replaced using hydrogen peroxide for subsequent oxidation, wherein subsequent complexing (afterchrome), then the soluble compound trivalent chromium of girt, preferably CFi3 are carried out. This method causes to colour wool product quality and chromic acid salt treatment. The two, if the painting cloth of manufacturer and user be not exposed to Cr VI compound and due to the fact that hydrogen oxide weak oxidant and chromate; A kind of fiber of slight damage (variation) is the mechanical performance that encounters compared to traditional chromic acid salt treatment. Enhancing chromic acid salt treatment leads to reduce chromium consumption with positive influence, influences in environment to the chromium for reducing excessive.