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Pigment color paste and preparation method thereof, and pigment ink

A technology of pigment color paste and pigment ink, which is applied in the direction of pigment paste, ink, household appliances, etc., and can solve the problems of self-aggregation, poor adhesion of water-based printing materials, fast-drying substrates, ink accumulation, etc.

Pending Publication Date: 2021-09-21
ZHUHAI FREE TRADE ZONE NEOJET APOLLOJET IMAGING MATERIALS
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the properties of oily substrate materials and water-based printing materials are incompatible. When water-based printing materials are printed on the surface of oily substrates, self-aggregation will occur, and water-based printing materials cannot Fully wetted and spread on the surface of the substrate, the ink shows a phenomenon of accumulation, resulting in uneven color distribution of the printed pattern; and due to the quick drying and poor adhesion of the water-based printing material to the substrate, it is easy to Ink flow occurs, destroying the integrity of the printed pattern

Method used

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  • Pigment color paste and preparation method thereof, and pigment ink
  • Pigment color paste and preparation method thereof, and pigment ink
  • Pigment color paste and preparation method thereof, and pigment ink

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preparation example Construction

[0029] The preparation method of pigment mill paste comprises the following steps:

[0030] a. Divide the water into two parts, mix 40% pigment, 8% aqueous organic solvent and part of the water in proportion at room temperature at a speed of 800rpm-1200rpm for 30min-60min, and grind at a speed of 2000rpm-2500rpm 1h~2h, get the first dispersion liquid;

[0031] b. In proportion, mix 7% dispersant, 3% additives, another part of water and the first dispersion obtained in step a at room temperature at a speed of 800rpm-1200rpm for 1h-2h to obtain the second dispersion;

[0032] c. Grind the second dispersion at room temperature and at a speed of 1500rpm to 2000rpm for 4h to 6h, then centrifuge at a speed of 6000rpm to 8000rpm for 10min to 20min, and then filter through a 1.0μm pore size filter membrane to obtain the filtrate.

[0033] When grinding in step a and step c, grinders are used respectively, wherein the filling amount of zirconium beads in the grinder is 70% to 80%, and...

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Abstract

The invention provides a pigment color paste and a preparation method thereof, and pigment ink, wherein the pigment color paste comprises a pigment, a dispersant, a water-based organic solvent and an auxiliary agent, the dispersant is at least one of an anionic water-based polyacrylic acid emulsion and an anionic water-based styrene acrylic acid copolymer emulsion; the polyacrylic acid emulsion and the anionic water-based styrene acrylic acid copolymer emulsion are water-emulsion type resin, the resin has better affinity with an oily surface base material, and the pigment color paste containing the water-emulsion type resin is made into the ink, so that the ink can be fully wetted and spread on the base material, the self-agglutination or accumulation phenomenon of the ink is avoided, the quick-drying property and adhesive force of the ink are improved, and the printing effect of the ink is ensured; and the anionic dispersant realizes that a diffusion layer with ions is formed on the surfaces of pigment particles, so that the pigment particles are stably dispersed in an aqueous solvent system, and the storage stability of the pigment color paste is improved.

Description

Technical field [0001] The invention relates to the field of printing consumables, specifically to a pigment paste and a preparation method thereof, and pigment ink. Background technique [0002] In the field of inkjet printing, in order to ensure the quality of the ink and its jetting performance, it is generally required that the viscosity of the water-based pigment ink is low, and the particle size of the particles in the ink reaches the nanometer level and has a narrow distribution range. In this case, it is required that the viscosity of the water-based pigment paste in the ink is low, the particle size of the pigment particles reaches the nanometer level, and the dispersion stability is good. [0003] When printing patterns on non-absorbent substrates such as leather, coated paper, and heat transfer films, in order to improve the adhesion of the ink on the above-mentioned non-absorbent substrates, it is necessary to print patterns on non-absorbent substrates such as le...

Claims

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Application Information

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IPC IPC(8): C09D17/00C09D11/037
CPCC09D17/004C09D17/007C09D17/008C09D17/005C09D17/002C09D11/037
Inventor 徐路振李俊
Owner ZHUHAI FREE TRADE ZONE NEOJET APOLLOJET IMAGING MATERIALS
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