Such as direct dyes, reactive dyes with cationic fixing agent processing, which generate color lake to improve wet fastness, for direct copper salt dyes with copper salt treatment, chromate treatment after acid dyes, thus forming chelating compound between dyes and fibers, thus reducing its solubility in water, in order to improve the color fastness. The water-soluble dye can be regarded as an active anion, which can be exchanged with the cationic group of the fixing agent on the fiber to produce the micro-dissolve and insoluble salts.
[Brief information ] Sulfur dye fixing agent is a formaldehyde-free fixing agent, mainly used in post-treatment of vulcanized dye fabrics and obviously all fabrics’ fastness. [Main composition] --Polycation polyamine compounds. [General properties ] -- Appearance: Colorless ...
Fixing agent for acid dyes will be deposited on the surface of the fiber, plugging the pores of acidic dyes dissolved again, thus reducing the possibility of fading, and generally improving the color fastness 1 ~ 1.5. Based on this, the solid color of the impregnation method is ...
Cationic fixing agent mainly through the cation and dye molecules in the anion group formation of ionic bonding, thereby sealing the water-soluble groups, to improve the wet treatment fastness. This kind of fixing agent can be divided into surfactant fixing agent and ...