The Eight Functions of Dye-Fixing Agent
Dye-fixing agent is widely used in the dyeing, I will introduction the eight functions of dye-fixing agent. 1. The reactive groups in dye-fixing agent will crosslink with the reactive groups of dye and hydroxy of fiber, achieving the purposes of dye-fixing. 2. It will produce insoluble color lake, closing the soluble group and the dye on fabric will not drip off, reaching the purpose of wet fastness. But this kind of color-fixing is easy to cause the color change and the decrease of light fastness. 3. The molecular attraction of dye-fixing agent and fiber will increase the fixing strength of the dye-fixing agent, thus, the fastness will increase. 4. Produce net film covering on the fabric and prevent the dye from dropping. 5. Introduce ultraviolet light absorber into the dye-fixing agent molecule, the Ultraviolet absorption groups will absorb the ultraviolet ray in sunshine, and prevent the damage to ultraviolet ray on dyeing structure, thus it will improve t...