1. Environmental protection, no pollution to the environment2. After being fixed with a fixing agent, it should be able to comprehensively improve various dyeing fastness, including soap washing, dry rubbing, wet rubbing, and sweat stain fastness

Fixing agents are additives used to improve the dyeing fastness of dyes on fabrics. As a finishing agent, it can combine with the ionic water-soluble groups of dyes to form insoluble colored substances, improving the washing and sweating fastness of colors, reducing the hydrophilicity of dyes, effectively improving the fixation rate, water washing resistance, friction fastness, and dye utilization rate of dyes, and sometimes improving their light fastness.

The pulp fibers are always yellow to grayish white, which is due to the absorption of purple and blue light with wavelengths of 0.4-0.5 um by the lignin contained in the pulp fibers. The higher the lignin content in the pulp, the darker the color. Grinded wood pulp contains a large amount of lignin, which is light yellow in color. Fluorescent whitening agents can be added to improve whiteness. Today, the editor will take you to understand the whitening principle of fluorescent whitening agents and the factors that affect their whitening effect.

Dyes are not unfamiliar to us, and they are indispensable in daily life. Simply put, dyes can be divided into two types: chemical dyes and environmentally friendly dyes. Chemical dyes are dyes made from compounds through a series of chemical reactions or directly using colored chemical substances. Environmental friendly dyes are different, as they are obtained from plants, animals, or mineral resources and have hardly undergone chemical processing.