I can not tell the difference tell the metal complex dyes and water based stains at first, while I know it well after read one article from Azalea Dyes.
Actually metal complex dyes is one kind of water based resin, while what about water based woods stains? It is one kind of emulsion. That is why they are so different. The dissloution of very great, that is also why its water resistant is very low.
Water based metal complex dyes has its own flaws, resin compatibility problems, solvent odor concentration problems, surfactant drying problems and other problems.
In the industry, most color precision is now water and oil soluble. So we cannot use it for matching color directly, at first we have to put some disperant in and through a series of treatment, add dispersant, or there would be some prone to Floc. We sometimes will see the flocculent sdeiments during in the process.
Why is there floc phenomenon? Its root lies in the stability of waterborne resin is destroyed, there will be a lot of flocculent material. So how can the stability of the water resin be damaged? From a chemical point of view, there are main two factors, one is the pH value, the another one is a HLB. Treatment ways include: add some wetting dispersant, but the effect is not so ideal by this way, the emulsifier and the reason for that is very similar, the protection of the colloidal resin system was not achromatized destruction or add some amine modifiers can also be improved to a certain extent. But there is no good solution to the problem at all. So in the actual use of the process, we'd better use the edge of the side, so as to avoid precipitation and waste.
They have their own solutions for foreign investors, they make the graft modification based on metal complex dyes, and increases the solubility of metal complex dyes by hydrophilic groups increased the stability of the system as a whole the very good protection.