HT Fine Textile Chemical Auxiliary Agent

High temperature levelling agent , soluble in water and general organic solvents, has excellent dye dispersibility, early retarding property and can be used with dyes at the same time. The performance of high temperature levelling agent is mainly measured by three indexes: retarding, dispersivity and migration. Retarding refers to dyeing rate, or dyeing speed. The faster the dyeing speed is, the easier the fabric is uneven. While it shouldn’t completely prevent the fabric from being colored, which will affect the final dyeing rate. Dispersivity is the ability to distribute dyes evenly in water bath so that the dye can be evenly absorbed by fiber or fabric. Migration refers to the transfer of disperse dyes to the lower concentration of the dye through levelling agent.   High temperature and high pressure dyeing is an important dyeing method of polyester fiber. On the one hand, because of dyeing properties of polyester fiber, it has basic requirements for high temperature levelling a...

a) The used amount of  high temperature levelling agent  had better ranges from 1 to 1.5g/L; otherwise, it will make the thermal condensation of dye speed out and the dye—uptake reduce and the color changes.  b) It is better to dilute before the usage and mix thoroughly in the warm water under 60℃. After that, to add up dye in case that some of the non-ionic components dissociate from the colloidal particles of the anionic component, and become molecules of tar with the dye molecules. c) To master the material correctly. The condensation association of disperse dyes has a direct relationship with temperature, concentration, time, additives and so on. Therefore, the material should be paid attention to the following points: I.Diffusion of commonly used agent NNO, MF and other solid additives, will have a greater viscosity at high concentration. And if they are mixed with the dye, it will increase the adhesion of dye, causing toning difficulties, and even leaving the nonfe...