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Reactive ink for digital printing

A reactive ink and digital printing technology, which is applied in dyeing, textiles and papermaking, etc., can solve the problem of poor color strength, color fastness and color reproducibility of wool fabrics, reduced color fastness of textiles, phosphate environmental pollution, etc. Problems, achieve significant environmental and economic benefits, avoid the reduction of color fastness, and achieve good color fastness

Active Publication Date: 2019-07-30
浙江海印数码科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the active groups of reactive dyes in the existing reactive inks are easily hydrolyzed, resulting in a reduction in the color fastness of textiles, and easily lead to blockage of the nozzles of digital inkjet printing machines.
[0005] The CN100381634C Chinese invention patent "Textile Digital Printing Reactive Dye Inkjet Ink and Its Production Process" announced on April 16, 2008 discloses a textile digital printing reactive dye inkjet ink, which includes reactive dyes, moisturizing agents, Descaling agents, bactericides, pH regulators, penetrants, deionized water, but due to the lack of selection of suitable surface tension regulators, viscosity regulators and pH regulators in this formula, the color strength and color fastness on wool fabrics Poor brightness and color reproducibility
[0006] The Chinese invention patent of CN200410025304.X announced on November 1, 2006 "a liquid reactive dye hydrolysis inhibitor and its preparation method", the specification discloses a phosphate buffer solution (sodium dihydrogen phosphate + disodium hydrogen phosphate) as Stabilizer for controlling pH stability of liquid dyes, but phosphate is easy to cause environmental pollution

Method used

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  • Reactive ink for digital printing
  • Reactive ink for digital printing
  • Reactive ink for digital printing

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Reactive dye inkjet ink for digital printing, which includes the following components by weight percentage: 12% reactive black 5, 10% triethylene glycol, 0.5% alkoxylated alcohol, 2% triethanolamine, 0.2% Thiazole fungicides, 7% caprolactam, 1% triethylamine, 2% NP-10, and the rest are deionized water. Put the above components into the mixing equipment according to the corresponding content, stir for 2 hours and mix them evenly, then mature them at 60°C for 24 hours, and filter them with 0.5 micron medium-speed filter paper to obtain the final product digital printing reactive ink; Figure 1-3 As shown, the stirring device includes a stirring tank 10, a stirring shaft 13, a first driving member 12, a stirring rod 3, a deflector 31, a first installation cavity 32, a rotating shaft 33, a first bevel gear 34, a driving shaft 35, The second bevel gear 36, the third bevel gear 37, the annular fixed plate 38, the teeth 39 and the vibrating assembly, the upper and lower ends o...

Embodiment 2

[0032] Digital printing reactive dye inkjet ink, which includes the following components by weight percentage: 15% reactive brilliant red X-BB, 12% triethylene glycol, 1% alkoxylated alcohol, 2% triethanolamine, 0.2% thiazole fungicide, 10% caprolactam, 1% triethylamine, 1.5% NP-10, and the rest are deionized water. Stir the above components according to the corresponding content for 2 hours and mix them evenly, then mature them at 60°C for 24 hours, and filter them with 0.5 micron medium-speed filter paper to obtain the final product digital printing reactive ink.

Embodiment 3

[0034] Reactive dye inkjet ink for digital printing, which includes the following components by weight percentage: 17% of C.L. reactive blue 49, 11% of 1,2 propylene glycol, 1% of alkoxylated alcohol, 2% citric acid, 0.4% thiazole fungicide, 8% caprolactam, 2% triethylamine, 2% NP-10, and the rest are deionized water. Stir the above components according to the corresponding content for 2 hours and mix them evenly, then mature them at 60°C for 24 hours, and filter them with 0.5 micron medium-speed filter paper to obtain the final product digital printing reactive ink.

[0035] detection

[0036] Conductivity (20 ℃, μS / cm), viscosity (20 ℃, nPa s), pH value (20 ℃), liquid dye low temperature stability, printing fluency and storage stability and standard to embodiment 1-3 For comparison, the results are shown in Table 1:

[0037] Table 1

[0038]

[0039] As can be seen from Table 1, the detection results of the reactive inks prepared in Examples 1-3 all meet the standards...

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Abstract

The invention discloses a reactive ink for digital printing and a preparation method thereof, belongs to the field of digital printing, and solves the problems that reactive groups of reactive dyes inan existing reactive ink are easily hydrolyzed to cause the reduced color fastness of a textile and result in that a nozzle of a digital inkjet printer is clogged. The reactive ink for digital printing comprises the following components by weight percentage: 10% to 30% of a reactive dye, 10% to 30% of a viscosity modifier, 0.2% to 2% of a surface tension modifier, 0.1% to 3% of a pH value controlagent, 0.2% to 0.5% of a fungicide, 5% to 10% of a cosolvent, 0.5% to 3% of buffer salt, 0.5% to 4% of a penetrant and the balance of deionized water. The reactive ink for digital printing has the advantages of high ink stability and the like.

Description

technical field [0001] The invention belongs to the technical field of digital printing, and in particular relates to a reactive ink for digital printing and a preparation method thereof. Background technique [0002] Digital printing is printing using digital technology. Digital printing works basically the same as inkjet printers. During the entire printing process, no water is used, no staff is required to prepare the color paste, after the machine is set up, the ink cartridge is installed, and the printing mode is started, the machine will distribute the dyes according to the needs, and directly spray the ink on the fabric top. Compared with traditional printing methods, digital printing is more environmentally friendly. [0003] Digital printing requires the use of digital printing reactive dye inkjet ink (referred to as reactive ink), the quality of reactive ink directly affects the effect of digital printing. Reactive ink consists of reactive dyes and a certain am...

Claims

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Application Information

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IPC IPC(8): D06P1/38D06P1/645D06P1/649D06P1/651D06P1/653D06P5/30
CPCD06P1/38D06P1/65131D06P1/645D06P1/6495D06P1/6533D06P5/30
Inventor 宋水友沈江南
Owner 浙江海印数码科技有限公司
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