Active dye ink-jet printing ink and preparation method thereof

A technology of reactive dyes and inkjet printing, which is applied in dyeing, ink, textiles and papermaking, etc. It can solve the problems of damage to inkjet printing equipment, poor storage stability, and high energy consumption, and achieve high color fastness to washing and printing The effect of high pattern precision and pure and saturated color

Inactive Publication Date: 2012-06-20
DONGHUA UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the production process of reactive dyes, it contains a large amount of main impurities NaCl, Na 2 SO 4 , and these impurities exist in the form of monovalent and divalent ions in the ink, resulting in too low solubility of the reactive dye in the ink. These ionic impurities will cause the crystallization of the reactive dye in a short time, and the storage stability is very poor. These problems have always plagued the application of domestic commercial-grade reactive dyes in the field of ink-jet printing. Domestic commercial-grade reactive dyes must be purified and further processed in order to produce cost-effective inkjet printing equipment. printing ink
[0004] Domestic and foreign patents CN1786331, CN1202549, CN1202550, CN1202551, US6780229 have published the composition of reactive dye inkjet printing ink one after another. In the disclosed method, reactive dyestuffs are not purified through desalination, and the inkjet printing ink is directly prepared. In fact, the ink will be precipitated. Layer phenomenon, cannot be used for digital inkjet printing of fabrics
U.S. Patent US6015454 announced the use of ultrafiltration and reverse osmosis membrane separation devices to remove inorganic salts in reactive dyes, using 1,2-propanediol and N-methyl-2-pyrrolidone as co-solvents, and the inkjet printing i

Method used

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  • Active dye ink-jet printing ink and preparation method thereof
  • Active dye ink-jet printing ink and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0033] The preparation of embodiment 1 blue reactive dye inkjet printing ink

[0034] Purification of blue reactive dyes: First, dissolve C.I. Reactive Blue 13 in deionized water to prepare a dye stock solution, in which the dye concentration is 4%, and then pass through polypropylene with a pore size of 10 μm and 2.5 μm under a working pressure of 1.0 MPa. The hollow fiber microfiltration membrane performs two-stage coarse filtration to remove insoluble solid impurities in the dye stock solution. The dye stock solution after coarse filtration enters a self-made two-stage nanofiltration desalination device (see the schematic diagram in figure 1 ) purification, the nanofiltration pressure is 1.8Mpa. After cyclic desalination for 19 hours, the conductivity of the retentate was measured three times in a row, and the conductivity of the retentate was all lower than 40mS / cm. At this time, the nanofiltration was stopped, and the purified C.I. Reactive Blue 13 concentrate was obtain...

Embodiment 2

[0040] The preparation of embodiment 2 red reactive dye inkjet printing ink

[0041] Purification of red reactive dyes: First, dissolve C.I. Reactive Red 23 dye in deionized water to prepare a dye stock solution, in which the dye concentration is 3%, and then pass the dye stock solution under a working pressure of 1.0MPa, with pore sizes of 10 μm and 2.5 μm in sequence. The polypropylene hollow fiber microfiltration membrane is used for two-stage coarse filtration to remove insoluble impurities. The raw dye solution after coarse filtration is purified by a self-made two-stage nanofiltration desalination device, and the nanofiltration pressure is 1.2MPa. After circulating desalination for 15 hours, the conductivity of the retentate was tested three times in a row, and it was found that the conductivity was lower than 43mS / cm, and the nanofiltration was stopped to obtain the purified C.I. reactive red 23 dye concentrate, in which the reactive dye concentration was 27%.

[0042]...

Embodiment 3

[0047] The preparation of embodiment 3 yellow reactive dye inkjet printing inks

[0048] Purification of yellow reactive dyes: First, dissolve C.I. reactive yellow 81 dye in deionized water to prepare a dye stock solution, in which the dye concentration is 5%, and then pass the dye stock solution under a working pressure of 1.0MPa, with pore sizes of 10 μm and 2.5 μm in sequence. The polypropylene hollow fiber microfiltration membrane is used for two-stage coarse filtration. After coarse filtration, the dye stock solution was purified by a self-made two-stage nanofiltration desalination device. The nanofiltration pressure was 0.8 MPa, and the desalination cycle was performed for 20 hours. Then, the conductivity of the retentate was tested three times in a row, and the measured conductivity was all lower than 39mS / cm. Finally, nanofiltration is stopped to obtain pure C.I. reactive yellow 81 dye concentrate, wherein the reactive dye concentration is 30%.

[0049] Preparation of...

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Abstract

The invention relates to active dye ink-jet printing ink and a preparation method thereof. The active dye ink-jet printing ink comprises the following components by mass percent: active dye concentrated solution 25 to 50 percent, humectant 5 to 15 surfactant 0.1 to 3 pH regulator 0.5 to 3 disinfectant 0.1 to 1 water-soluble cosolvent 5 to 10 and deionized water in balancing amount. The active dye ink-jet printing ink is prepared through the following steps: adding the active dye concentrated solution, the humectant, the surfactant, the water-soluble cosolvent, the pH regulator and the disinfectant into the deionized water, stirring and then continuing to stir through an emulsifying machine; still standing; and finally filtering through a filtration film. The active dye concentrated solution (the concentration is greater than 20 percent) is obtained through refining with a two-stage nano-filtration device, so that the purity is very high; and invention is environmental-friendly, and the prepared active dye ink-jet printing ink has the advantages of high printing smoothness, storage stability, pattern printing accuracy and color fastness and is washable.

Description

technical field [0001] The invention belongs to the technical field of inkjet printing, in particular to a reactive dye inkjet printing ink and a preparation method thereof. Background technique [0002] Compared with the traditional printing process, the emerging textile digital inkjet printing technology has the advantages of short cycle, energy saving and emission reduction, and rich colors. This new printing method will bring a revolution to the traditional printing and dyeing technology. Textile inkjet printing technology mainly includes three aspects: inkjet printing equipment, inkjet printing ink and inkjet printing process. The requirements for inkjet printing equipment are: high printing precision, fast speed, good reliability and applicability. Several domestic enterprises have developed ink-jet printing equipment for textiles, which have been sold to domestic and foreign markets. The inkjet printing process is simpler than traditional printing, and generally inc...

Claims

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Application Information

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IPC IPC(8): C09D11/02D06P5/30D06P1/38C09D11/328
Inventor 王夏琴冉淑燕李文彬
Owner DONGHUA UNIV
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