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

A micro-particle, easy-to-disperse technology, applied in the direction of organic dyes, etc., can solve the problems of difficult dispersion, difficult storage, and large loss of products, and achieve the effect of easy coloring, easy storage, and increased stability

Inactive Publication Date: 2010-11-03
TONGLING QINGHUA TECH
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  • Claims
  • Application Information

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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. Altho

Method used

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Embodiment Construction

[0014] The present invention is an easy-to-storage, dust-free, and easy-to-disperse preparation method of hollow microparticle solvent dyes, the specific steps of which are as follows:

[0015] (1) The dye filter cake and the composite surfactant account for 2.5% of the total mass of the dye dry basis by the composite surfactant and put it into a sand mill for rough grinding; add 0.1- 0.3% defoamer; composite surfactant is composed of polyethylene glycol (PEG) and polyvinylpyrrolidone (PVP), the ratio is 0.6 / 0.4, the molecular weight of polyethylene glycol (PEG) is calculated according to the number of OH It is 6000----90000; the molecular weight of polyvinylpyrrolidone (PVP) is 24000----58000; the defoamer is BD-306R. The grinding medium used in the coarse grinding process is 0.5-2.5mm zirconia balls.

[0016] (2) Transfer the coarsely ground material into a homogenizer for fine grinding, so that the particle size of the dye particles reaches 1-80 microns;

[0017] (3) Tr...

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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...

Claims

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Application Information

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IPC IPC(8): C09B67/02C09B67/04C09B67/06
Inventor 陈灏杨庆水陶一敏姚文熟
Owner TONGLING QINGHUA TECH
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