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Ink composition with high-weather-resistance black dye for ink-jet printing

A black dye, high weather resistance technology, used in inks, applications, household appliances, etc., to achieve the effect of high ozone resistance, excellent dyeing performance, and excellent image quality

Active Publication Date: 2011-08-31
深圳市墨库图文技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The present invention aims at solving the sun-resistant and ozone-resistant problems of water-based dye inks, and provides a kind of light fastness and ozone-resistant performance that improves water-based black dye inks through the purification of medium black dyes, and does not block the shower head. Ink composition for inkjet printing of highly weather-resistant black dye

Method used

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  • Ink composition with high-weather-resistance black dye for ink-jet printing
  • Ink composition with high-weather-resistance black dye for ink-jet printing
  • Ink composition with high-weather-resistance black dye for ink-jet printing

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] 1. Purification of medium black dye paste

[0025] Take 30 kg of medium black PV original powder, add it to an electric heating stirring kettle containing 270 kg of deionized water, heat while stirring, and stir for 1 hour after the temperature reaches 80 degrees to ensure that all the dye powder added After dissolving, use a 5-micron PP filter element for coarse filtration, and when the temperature is lower than 60 degrees, use an ultrafiltration membrane and a nanofiltration membrane combination filter that can remove sodium chloride for filtration to remove molecular weight above 30,000. Substances by-products and sodium chloride. Supplement deionized water in the purification process to ensure the permeability of the membrane, and detect the conductivity of the filtered liquid. When the conductivity is below 20ms / cm, stop adding deionized water, continue nanofiltration and add color paste. The volume of the product is controlled at about 200 liters, that is, the re...

Embodiment 2

[0033] 1. Purification of medium black dye paste

[0034] Take 30 kg of the original powder of medium black P2B, add it to an electric heating stirring kettle containing 270 kg of deionized water, heat while stirring, and stir for 1 hour after the temperature reaches 80 degrees to ensure that all the dye powder added is After dissolving, use a 5-micron PP filter element for coarse filtration, and when the temperature is lower than 60 degrees, use an ultrafiltration membrane and a nanofiltration membrane combination filter that can remove sodium chloride for filtration to remove molecular weight above 30,000. Substances by-products and sodium chloride. Supplement deionized water in the purification process to ensure the permeability of the membrane, and detect the conductivity of the filtered liquid. When the conductivity is below 20ms / cm, stop adding deionized water, continue nanofiltration and add color paste. The volume of the product is controlled at about 200 liters, that...

Embodiment 3

[0042] 1. Purification of medium black dye paste

[0043] Take 30 kg of medium black T original powder, add it to an electric heating stirring kettle containing 270 kg of deionized water, heat while stirring, and stir for 1 hour after the temperature reaches 80 degrees to ensure that all the dye powder added is After dissolving, use a 5-micron PP filter element for coarse filtration, and when the temperature is lower than 60 degrees, use an ultrafiltration membrane and a nanofiltration membrane combination filter that can remove sodium chloride for filtration to remove molecular weight above 30,000. Substances by-products and sodium chloride. Supplement deionized water in the purification process to ensure the permeability of the membrane, and detect the conductivity of the filtered liquid. When the conductivity is below 20ms / cm, stop adding deionized water, continue nanofiltration and add color paste. The volume of the product is controlled at about 200 liters, that is, the ...

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Abstract

The invention discloses an ink composition with a high-weather-resistance black dye for ink-jet printing. The composition is prepared by mixing following components in percentage by weight: 6-12 percent of polyhydroxy alcohol, 13-30 percent of solvents, 0.1-3 percent of surfactants, 0-0.5 percent of pH regulators, 0.1-0.3 percent of bactericides, 20-40 percent of mordant black dye paste and the balance of deionized water. The invention also provides a method for purifying the mordant black dye paste, which comprises the following steps of: mixing mordant black dye raw powder and deionized water based on a weight ratio of 1:9, heating, filtering, and performing desalination treatment to obtain the mordant black dye paste. The ink composition with the high-weather-resistance black dye for ink-jet printing, disclosed by the invention, has extremely high light fastness and ozone resistance, the printing quality is good, the optical density is high, the quality guarantee period is long, and a nozzle is not blocked.

Description

【Technical field】 [0001] The present invention relates to a water-soluble dye ink composition for ink jet printing, in particular to an ink composition for ink jet printing having a black dye with high weather resistance. 【Background technique】 [0002] Dye inks used in inkjet printers are molecular-level fully dissolved inks, which are complete complex solutions. The dye ink is easily absorbed by the material after being sprayed. It is printed on flat and smooth paper, and has excellent light emission performance and strong color reproduction ability, so it is widely used. However, because the dye ink is not protected by a layer of polymer on the surface like the pigment ink, the color material of the dye ink is a single molecule that exists independently. Under the irradiation of ultraviolet light and the corrosion of gases such as ozone, the molecules are easily decomposed and destroyed, resulting in color changes. , causing fading and shortening the application cycle fo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D11/02C09D11/328
Inventor 王首斌李伟
Owner 深圳市墨库图文技术有限公司
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