Latest News and Updates on Textile Auxiliaries and Dyes

Lifting powerLet's first look at the lifting power of disperse dyes, which is one of the important properties of disperse dyes. The lifting power is good, indicating that there is a good deep dyeing property. So what is the effect on dyeing? In fact, the lifting power of different varieties is very Read More

When polyester-cotton blended fabrics are dyed in hot melt, the color matching dyes must also have the same properties as the monochromatic dyes. The melting temperature and time should be compatible with the fixing characteristics of the dye to ensure the highest color yield. Each single color dye Read More

Disperse dyes are poured into water and then dispersed into fine particles. The particle size distribution is expanded according to the binomial formula, with an average value of 0.5 to 1 micron. The particle size of high-quality commercial dyes is very close, and there is a high percentage, which c Read More

Only by understanding the properties of Disperse Turquoise Blue S-GL can you understand the influence factors of the dye itself on the color flower. Disperse turquoise blue S-GL (C.I. Disperse Blue 60), a typical anthraquinone structure disperse dye, its molecular formula is C20H17N3O5, molecular we Read More

When pure polyester fabrics are dyed with disperse dyes, especially filament fabrics, they always look bright and white after dyeing. Increasing the dye concentration will not help, and the color fastness will be greatly reduced.There are two reasons for the low blackness:1. The cross-section of pol Read More

Nylon (nylon) is a hydrophobic fiber with amino and carboxyl groups on the fiber. As a basic material, it has a wide range of applications, especially in the textile industry. Nylon can be dyed with disperse dyes, acid dyes, especially weak acid dyes. Its dyeing has the characteristics of fast dyeing rate and high exhaustion rate. However, due to the different spinning process specifications, the fiber structure is very different, which leads to large differences in dyeing performance and easy to produce color differences. Read More

Light fastness refers to the degree of discoloration of colored fabrics by sunlight. Read More

1. Various synthetic fibers have different physical and chemical properties, so the requirements for dyes are also different. Generally speaking, the polarity of the dye, the size and shape of the molecular structure must be compatible with the polarity and physical structure of the fiber. The basic Read More

The poor water solubility of disperse dyes is almost entirely dependent on the dispersant that coats them to form hydrophilic dye colloidal particles before dispersing the dispersant in water. However, during the dyeing process, due to the shear force of the dyeing solution and the high temperature Read More

In the process of dry heat treatment, the color fastness of polyester fibers dyed with disperse dyes decreases and the color light changes. It is caused by the thermal migration of disperse dyes. The so-called thermal migration refers to a phenomenon in which part of the dye migrates from the inside Read More

1. Reductive cleaning under alkaline conditions:Soaping agent + reducing agent (sodium sulfide or thiourea dioxide) + alkali (caustic soda or soda ash), but many domestic dyeing factories do not use soaping agent.Soaping agent: non-ionic surface active agent, which is conducive to dissolving, disper Read More

1. The influence of solvent and mediumThe absorption wavelength of the dye solution changes with the polarity of the solvent. When the dye is dissolved in a polar solvent, the polarity of the dye increases as the polarity of the solvent increases, so that the excitation energy is reduced, the absorp Read More