Aqueous metal ink and preparation method thereof

Abstract

The invention relates to the field of ink and discloses an aqueous metal ink. The aqueous metal ink comprises a metallic pigment, an aqueous resin dispersion, a surfactant, polyethylene micronized powder, a dispersant, an antioxidant, a defoamer and deionized water, wherein the aqueous resin dispersion is one or the combination of aqueous acrylic resin solution, which is nonacid and does not contain sulfides and oxides, aqueous polyurethane resin and aqueous silicone acrylate resin. The invention also discloses the preparation method of the aqueous metal ink. The aqueous metal ink provided bythe invention is very stable and aging resistant and has high adhesive force, the cost of the aqueous metal ink is lowered by 30 to 40 percent, and the preparation process is simple.

Description

A kind of water-based metallic ink and preparation method thereof technical field The invention relates to the ink field, in particular to a water-based metal ink and a preparation method thereof. Background technique Metallic inks have always been mainly oil-based, and are widely used in offset printing inks and solvent-based inks. However, water-based metallic inks have the following disadvantages in application: First, due to the characteristics of the metal pigment itself - lively and easy to be oxidized, darkened, blackened and lose its metallic luster, especially in alkaline water-based systems, metal pigments are more likely to oxidize, blacken and agglomerate, making water-based metal inks Restricted in the application; Second, the packaging technology of water-based metallic pigments is not mature enough, and the metallic pigments cannot be well packaged, so they are easily oxidized; Third, in the synthesis process of water-based binders, the effect of acryl...

AI Technical Summary

Problems solved by technology

Water-based metallic inks are usually used in the field of flexographic printing technology, but the water-based gold and silver ink resins currently used in China are basically imported from abroad, and the price is quite expensive

Although water-based gold and silver ink resins are also produced in China, and the price is relatively cheap, compared with similar foreign products, there are disadvantages of poor stability, easy precipitation, and easy discoloration, and the quality is always inferior to imported similar products.

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