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Pigment ink and preparation method thereof

A technology of pigment ink and color paste, which is applied in the field of pigment ink and its preparation, can solve problems such as clogging, unstable pigments, substandard nozzles, etc., and achieve good stability, strong water resistance, and good fusion effect

Pending Publication Date: 2020-04-10
珠海东昌色彩科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the granularity of the pigment, the pigment is often unstable, and the particle size in the grinding process is not up to standard, causing the nozzle to be blocked.

Method used

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  • Pigment ink and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Weigh pigment red C.I.P.R.209, DISPERS 750W, and deionized water at a mass ratio of 30:15:55, mix them evenly, and add them to a sand mill equipped with zirconia balls after fully stirring. The filling rate of zirconia balls is 80 %, the diameter of the zirconium ball is 1mm, turn on the sand mill to increase the shear force to 12m / s, and carry out the production of color paste. During the production, the temperature is controlled at 34-40°C, and the particle size is monitored in real time. When D50<100, stop the machine , filter with a 0.5 micron PES filter membrane (purchased from PALL's polyethersulfone material) to obtain a color paste. 18.5 parts of polyvinyl alcohol, 2 parts of 2-methyl-4-isothiazolin-3-one, 1 part of triethanolamine, 10 parts of BYK800N, 5 parts of polyurethane resin, 10 parts of acrylic resin and 80 parts of deionized water , mixed at room temperature, fully stirred for 1 hour to obtain a mixed solution; 30 parts of color paste was added to the ...

Embodiment 2

[0037] Weigh Pigment Yellow C.I.P.Y.17, Corning Hydropalat 100, and deionized water at a mass ratio of 20:10:70, mix them evenly, and add them to a sand mill equipped with zirconia balls after fully stirring. The filling rate of zirconia balls is 80 %, the diameter of the zirconium ball is 2mm, turn on the sand mill to increase the shear force to 12m / s, and carry out the production of color paste. The temperature is controlled at 34-40°C during production, and the particle size is monitored in real time. When D50<100, stop , filter with a 0.3 micron PES filter membrane (purchase the polyethersulfone material of Sub-PALL Company) to prepare the color paste. Mix 10 parts of glycerol, 1 part of 2-methyl-4-isothiazolin-3-one, 2 parts of sodium hydroxide, 0.5 parts of air chemical 609, 6 parts of polyurethane resin and 65.5 parts of deionized water at room temperature Mix and fully stir for 1 hour to obtain a mixed solution; add 15 parts of color paste to the mixed solution, and fu...

Embodiment 3

[0039] Weigh Pigment Yellow C.I.P.Y.17, Corning Hydropalat 100, and deionized water at a mass ratio of 40:18:42, mix them evenly, and add them to a sand mill equipped with zirconia balls after fully stirring. The filling rate of zirconia balls is 80 %, the diameter of the zirconium ball is 2mm, turn on the sand mill to increase the shear force to 12m / s, and carry out the production of color paste. The temperature is controlled at 34-40°C during production, and the particle size is monitored in real time. When D50<100, stop , filter with a 0.3 micron PES filter membrane (purchase the polyethersulfone material of Sub-PALL Company) to prepare the color paste. Mix 10 parts of glycerol, 1 part of 2-methyl-4-isothiazolin-3-one, 2 parts of sodium hydroxide, 0.5 parts of air chemical 609, 6 parts of polyurethane resin and 65.5 parts of deionized water at room temperature Mix and fully stir for 1 hour to obtain a mixed solution; add 15 parts of color paste to the mixed solution, and fu...

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Abstract

The invention belongs to the field of printing consumables, and discloses a pigment ink. The pigment ink is prepared from, by weight, 1-30 parts of a color paste, 5-20 parts of a humectant, 0.1-10 parts of a surfactant, 3-15 parts of resin and 30-85 parts of water. A dispersant containing an acrylic polymer and a modified polyether copolymer is adopted to effectively disperse a toner in order to form the stable color paste, and the color paste and the resin have a good fusion effect, and coact with the surfactant, the humectant and the like, so the prepared pigment ink has good stability and scratch resistance, is a water-based pigment, but is high in waterproofness. The pigment ink is high in stability, and the viscosity and the pH value of the pigment ink are slightly changed after the pigment ink is stored at 60 DEG C for one month. When the pigment ink is used for printing, the definition is high, and the pattern is clear and no blurring phenomenon exists after the printing is soaked in water for 5 min, so the waterproofness is high.

Description

technical field [0001] The invention belongs to the field of printing consumables, in particular to a pigment ink and a preparation method thereof. Background technique [0002] Digital printing is currently in a period of rapid development. Compared with traditional printing, direct jet printing can reduce the amount of ink used, shorten the processing process, and has many advantages such as low cost and low pollution. [0003] At present, digital inkjet printing can be mainly divided into pigment-based and dye-based inks. Dye-based inks exist in molecular form, so the patterns are bright but have poor water resistance and are easy to fade. Pigment-based ink is suspended in particles, and the pigment can be kept dispersed in water through a dispersant, which has the advantages of light resistance and water resistance. However, due to the granularity of the pigment, the pigment is often unstable, and the particle size in the grinding process is not up to standard, causing...

Claims

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Application Information

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IPC IPC(8): C09D11/322C09D11/30
CPCC09D11/30C09D11/322
Inventor 刘巍
Owner 珠海东昌色彩科技有限公司
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