Method for preparing easily-stored, dust-free and easily-dispersed hollow micro-particle solvent dye

Abstract

The invention discloses a method for preparing an easily-stored, dust-free and easily-dispersed hollow micro-particle solvent dye, which comprises the following specific steps of: (1) putting a dye filter cake and a compound surfactant into a sanding pot to perform coarse grinding and adding an antifoaming agent in the coarse grinding process; (2) transferring the coarsely ground material to a homogenizer and performing fine grinding to make the particle size of dye particles reach 1 to 80 microns; and (3) conveying the finely ground material to a spray drying tower by using a high-pressure pump and performing spray drying granulation to obtain the hollow micro-particle dye with the particle size of 5 to 1,000 microns. The dye has the advantages of easy storage, no dust, environmental protection, easy dispersion, and easier product coloring.

Description

technical field [0001] The invention relates to a dye post-treatment method, in particular to a method for preparing solvent dyes into easy-to-storage, dust-free, and easy-to-disperse hollow microparticles. Background technique [0002] At present, the production of solvent dyes is developing rapidly in China, and its price competition is becoming increasingly fierce. On the contrary, Bayer, an international manufacturer of solvent dyes, is still thriving, and Chinese manufacturers have not yet been able to pose a threat to them. , the main reason: the solvent dyes produced by Bayer are micro-particle type, and its main features are: easy to store, easy to disperse, easy to clean, small loss, dust-proof and environmentally friendly, especially welcomed by plastic spinning manufacturers in developed countries; More importantly, there is considerable room for profit in the sale of granulated solvent dyes. However, the solvent dyes produced in China adopt the traditional dryin...

AI Technical Summary

Problems solved by technology

However, the solvent dyes produced in China adopt the traditional drying method, and the products are all powdery. During the preparation and use, the loss is large, the pollution is heavy, the product is not easy to disperse, and it is difficult to store. Although the price is cheap, it is very important for developed countries that pay attention to environmental protection , it is difficult to accept such products, which means that it is difficult for such products in China to enter the markets of developed countries