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Nanoscale water-based pigment dispersing liquid for ink jet and preparation method thereof

A water-based pigment and dispersion technology, applied in the direction of pigment paste, etc., can solve the problem of inkjet ink clogging the print head and other problems, and achieve the effect of meeting the needs of stability, low viscosity and stable storage

Active Publication Date: 2015-04-08
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

In the water-based color paste of inkjet ink, the pigment particles in it are nano-scale particles with large specific surface area and high surface energy. 8 months) storage or delamination in a temperature-changing environment, resulting in the occurrence of inkjet inks configured to clog the print head

Method used

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  • Nanoscale water-based pigment dispersing liquid for ink jet and preparation method thereof
  • Nanoscale water-based pigment dispersing liquid for ink jet and preparation method thereof
  • Nanoscale water-based pigment dispersing liquid for ink jet and preparation method thereof

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preparation example Construction

[0029] The preparation method of ink-jet nano water-based pigment dispersion liquid of the present invention comprises the following steps:

[0030] 1. At room temperature (20°C), mix deionized water, dispersant 8-18%, and acid-base regulator 0.1-5%, preferably 1%, in a container according to mass percentage, stir and mix evenly in a container to obtain a mixed solution, stir The mixing speed is 300-500rpm, and the time is 10-30min.

[0031] The dispersant can be selected from one or more of solsperse-46000, edaplan482, solsperse-43000, zetasperse-3700, zetasperse-2500, EFKA4560, EFKA4585, Joncryl HPD196, Surfynol CT-151.

[0032] The acid-base regulator is more than one of triethanolamine, ammonia water, triethylamine and sodium hydroxide.

[0033] 2. Add 10-15% pigment by mass to the mixed solution under the condition of rotating speed 800-1000rpm to obtain the mixed solution with added pigment.

[0034] The pigment is one or more of yellow pigments, black pigments, red pi...

Embodiment 1

[0055] 1. According to the mass, disperse 8 parts of Basf dispersant EFKA4560, 1 part of triethanolamine and 81 parts of deionized water with a disperser at a speed of 300 rpm for 20 minutes to obtain a mixed solution.

[0056] 2. Add 10 parts of yellow pigment C.I.PY74 from Ciba, a Swiss Basel chemical industry company, to the mixed solution at a rotational speed of 800 rpm to obtain a mixed solution with added pigment. The formulation composition is shown in Table 1.

[0057] 3. High-speed dispersion, the speed is 1000rpm, the time is 2.0h, and the dispersion liquid is obtained.

[0058] 4. Quickly pour the dispersion liquid into a horizontal pin mill with a 6.0L cavity, and circulate and grind 100kg of the dispersion liquid for 15 hours. The grinding medium is zirconia beads. The average diameter of zirconia beads is 0.2-0.5mm. 1000rpm, the mass ratio of zirconia beads to the dispersion liquid is 1:5, and the grinding temperature of the dispersion liquid is controlled betw...

Embodiment 2

[0063] 1. According to the mass, disperse 10 parts of Basf's dispersant EFKA4560, 1 part of triethanolamine and 77 parts of deionized water with a disperser at a speed of 420 rpm for 10 minutes to obtain a mixed solution.

[0064] 2. Add 12 parts of yellow pigment C.I.PY74 from Ciba Company to the mixed solution at a rotational speed of 900 rpm to obtain a mixed solution with added pigment. The formulation composition is shown in Table 1.

[0065] 3. High-speed dispersion, the speed is 1200rpm, the time is 1.5h, and the dispersion liquid is obtained.

[0066] 4. Quickly pour the dispersion liquid into a horizontal pin mill with a 6.0L cavity, and circulate and grind 100kg of the dispersion liquid for 15 hours. The grinding medium is zirconia beads. The average diameter of zirconia beads is 0.2-0.5mm. 1250rpm, the mass ratio of zirconia beads to the dispersion liquid is 1:5, and the grinding temperature of the dispersion liquid is controlled between 30-50°C during the grinding...

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Abstract

The invention discloses nanoscale water-based pigment dispersing liquid for ink jet and a preparation method thereof. The technical problem to be solved is to enable nanoscale water-based color paste maintain to be stable for a long time. The nanoscale water-based pigment dispersing liquid for ink jet comprises the following components in percentage by weight: 10 to 15 percent of pigment, 8 to 18 percent of a dispersing agent, 0.1 to 5 percent of an acid-base regulator and the balance of deionized water. The preparation method of the nanoscale water-based pigment dispersing liquid for ink jet comprises the following steps: stirring and mixing the deionized water, the dispersing agent and the acid-base regulator; adding the pigment; dispersing at high speed; and grinding circularly to obtain the nanoscale water-based pigment dispersing liquid for ink jet. Compared with the prior art, the nanoscale water-based pigment dispersing liquid for ink jet obtained by high-speed dispersion and grinding can be placed at high temperature, low temperature and room temperature for a long time, has low viscosity, achieves an excellent testing effect on an ink-jet printer and is stored stably. The nanoscale water-base color paste can maintain stable for a long time, so the requirement on the stability of pigment ink can be met completely.

Description

technical field [0001] The invention relates to an inkjet ink and a preparation method thereof, in particular to an inkjet ink water-based pigment paste and a preparation method thereof. Background technique [0002] In the water-based inkjet ink, there are two kinds of dye ink and pigment ink in the prior art. Graphics and texts printed with dye inks can obtain bright colors, but they are not waterproof, and they are easy to fade after being stored for a long time. Pigment ink has the advantages of water-proof printed graphics and not easy to fade after long-term storage. Therefore, pigment ink is more and more widely used. Since the pigment of pigment ink exists in the ink system in the form of nanoparticles, it is easy to settle and agglomerate the particles, so the preparation of a stable water-based color paste (dispersion) for a certain period of time is the key to the preparation of pigment ink. In the water-based color paste of inkjet ink, the pigment particles in ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D17/00
Inventor 王首斌叶门辉邱伟伟
Owner 深圳市墨库图文技术有限公司
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