Pigment type neutral ink and production method thereof

Abstract

The invention discloses a pigment type neutral ink and a production method thereof. The pigment type neutral ink comprises the following raw materials by weight percentage: 15-40% of color paste, 15-40% of wetting agent, 1-3% of pH regulator, 0.1-2.0% of antibacterial bacteriostatic agent, 0.5-5.0% of surfactant, 0.5-3.0% of rheology assistant, 0.1-1.0% of defoamer, 2-10% of resin, 0.1-1.5% of corrosion inhibitor, 0.3-2.5% of lubricant and the balance of de-ionized water, wherein the color paste is a water-based color paste, and the formula of the water-based color paste includes 18-35% of pigment, 1-12% of surfactant, 0.2-3.0% of pH regulator, 0.1-2.0% of antibacterial bacteriostatic agent, 0.05-1.0% of defoamer, 3-15% of wetting agent and the balance of de-ionized water. The pigment type neutral ink has excellent moisture preservation and lubrication properties, and thereby guarantees continuity and fluency of writing; and the pigment type neutral ink is stable in performance and long in quality guarantee period.

Description

technical field [0001] The invention relates to the technical field of chemical industry, in particular to a pigment-type neutral ink, and also relates to a preparation method of the pigment-type neutral ink. [0002] Background technique [0003] Gel pen is a new type of ballpoint pen products, because of its smooth writing, clear handwriting, excellent water and light resistance, good color, long shelf life without fading, and both the lubricity of oily ballpoint pens and the fluency of water-based ballpoint pens, etc. Advantages, deeply loved by consumers, the market share has increased year by year. The matching neutral ink refers to the medium-viscosity gel-like pigment ink with a viscosity between oily ballpoint pen ink and water-based ballpoint pen ink. It is a new type of fine chemical product with high technological content. However, there are dispersion and stability problems of the pigment particles in the water-based system. During the long-term storage of the ...

AI Technical Summary

Problems solved by technology

However, there are dispersion and stability problems of the pigment particles in the water-based system. During the long-term storage of the ink, the pigment tends to thicken and flocculate, resulting in the continuous increase of the particle size of the pigment, and even separation from the matrix and delamination, resulting in neutral In the process of writing, the ink often clogs the tip of the pen, breaks the writing line, has poor fluency, and even fails to write when the refill is not used up.