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Cationic dye ink composition for digital inkjet and method for manufacturing printed textiles

A cationic dye and digital inkjet technology, applied in textiles and papermaking, dyeing, biochemical fiber treatment, etc., can solve ink storage stability, color concentration, poor washing fastness and light fastness, damage to metal parts, failure Achieve the effects of superior hand feel, bright colors, and mild post-processing technology

Inactive Publication Date: 2020-03-10
T&T IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This patent mainly discusses that when the printed fabric is acrylic fiber or cationic dyeable polyester, the first step of the textile needs to be pretreated before printing, but the cationic dyes tested are all commercially available products, which are dissolved in general organic solvents to filter out impurities and then evaporated. Solvents, the inks prepared in this way have very poor storage stability, color density, washing fastness, and light fastness, which cannot meet the requirements of general digital inks in the market.
[0010] In addition, most commercially available cationic dyes have relatively low solubility in water, so it is necessary to reduce the pH of the ink to about 2-4 to significantly increase the solubility
However, the nozzles of jet printing equipment are easily damaged by the corrosion of metal parts in acidic environment

Method used

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  • Cationic dye ink composition for digital inkjet and method for manufacturing printed textiles
  • Cationic dye ink composition for digital inkjet and method for manufacturing printed textiles
  • Cationic dye ink composition for digital inkjet and method for manufacturing printed textiles

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Experimental program
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preparation example Construction

[0059]

[0060] First, the components in the ink composition are uniformly mixed to obtain a dye solution. It should be noted that the order of adding the various ingredients is not particularly limited as long as they can be mixed uniformly. Next, the dye solution was filtered through a 5 μm polypropylene filter material, and then filtered through a 1 μm polypropylene filter material. After filtration, the dye solution was filtered through a 0.45 μm polyvinylidene fluoride membrane to prepare an ink composition.

[0061]

[0062] Specifically, the manufacturing method of printed textiles sequentially includes (i) sizing treatment, (ii) spray printing treatment and (iii) post-treatment. The steps are detailed below:

[0063] Step (i) Sizing treatment

[0064] The textile is subjected to sizing treatment to form a size layer on the textile, wherein the size layer is formed by a size composition.

[0065] There are no special restrictions on the sizing treatment method, p...

Embodiment A1 to Embodiment A8

[0079] Embodiment A1 to embodiment A8 (RO method)

[0080] Weigh 160-200 grams of filter cake or raw powder of self-made or commercially available high-concentration cationic dyes (as shown in Table 1 below). Add the filter cake or raw powder of high-concentration cationic dye to 8 liters of pure water to prepare a dye solution with a solid content of 2% to 2.5% by weight, adjust the pH of the dye solution to 7.0±0.2 with 3N NaOH and 3N HCl solution, and stir Heating under low temperature raised the temperature to 85° C., stirred at the temperature for 1 hour, stopped stirring and naturally cooled down to room temperature. The dye solution was filtered through a 5 μm polypropylene filter, and then filtered through a 1 μm polypropylene filter. After filtration, the dye solution is circulated and dialyzed against inorganic salts with a nanofiltration membrane, in which the nanofiltration membrane is made of polyamide, the surface of the membrane is negatively charged, the desal...

Embodiment B1

[0088] After 300 grams of cationic dye color paste (i.e. the prepared cationic dye color paste by embodiment A3) of C.I. basic blue 159 as cationic dye, 200 grams of glycerol (glycerol), and 60 grams of ethanol were stirred evenly, add 1 % by weight of hydroxyethyl cellulose, and an appropriate amount to adjust the viscosity of the ink at 25° C. to 1.5 to 15 cps. Next, add an appropriate amount of Surfynol 465 to adjust the surface tension of the ink to between 20 and 40 dyne / cm, add 0.1 g of antibacterial agent, and add an appropriate amount of triethanolamine to adjust the pH of the ink to 6.0 to 7.0, and use pure water to make up the total amount of the ink to 1000 grams, thereby preparing a blue dye solution. Filter the above dye solution with a 5 μm polypropylene filter material, then filter it with a 1 μm polypropylene filter material, and then filter the dye solution with a 0.45 μm polyvinylidene fluoride membrane to prepare the blue ink composition of Example B1 thing...

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Abstract

The invention provides a cationic dye ink composition for digital inkjet and a method for manufacturing printed textiles. The cationic dye ink composition for digital inkjet includes at least one cationic dye, water, and at least one organic solvent as a humectant.

Description

technical field [0001] The invention relates to a cationic dye ink composition for digital inkjet and a method for manufacturing printed textiles, in particular to a cationic dye ink for digital inkjet used when applying acrylic fibers and cationic dyeable polyester fibers as textiles Composition and method for producing printed textile. Background technique [0002] The textile printing industry is a high-pollution and high-energy-consuming industry, but in recent years, the digital inkjet printing method has been gradually used in the textile printing industry. In addition to improving pollution and energy consumption, this method can save the production of printing screens , saving a lot of cost and time, especially for changing patterns and color levels, it can obviously meet the requirements in a short time, which is highly valued by the printing and dyeing industry. [0003] In the prior art, for example, Shanghai Serudan Dyestuff Chemical Co., Ltd. proposes a method ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06P1/41D06P3/34D06P3/52D06P5/30D06M15/03D06M11/30D06M13/207D06M13/352D06M101/32D06M101/26
CPCD06M11/30D06M13/207D06M13/352D06M15/03D06M16/00D06M2101/26D06M2101/32D06P1/41D06P3/342D06P3/522D06P5/30
Inventor 林明亿梁孟伟曾铭章
Owner T&T IND
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