1results about How to "Write fluently" patented technology

This invention discloses a pigment-based neutral red ink, its preparation method, and its applications. The pigment-based neutral red ink, by mass percentage, comprises the following components: 2-10% red organic pigment, 0.5-7% dispersant, 5-25% humectant, 0.05-0.2% polyvinylpyrrolidone, 1-10% penetrant, 0.1-1.5% preservative, 0.1-4% pH adjuster, 0.1-0.5% defoamer, and the balance deionized water. This invention's pigment-based neutral red ink solves the technical problem of easy sedimentation of red pigments through ultra-fine pigment dispersion and the combination of stabilizers, allowing the ink to remain stationary for extended periods without separation. Furthermore, the use of a special humectant combination ensures that the ink does not dry out at the pen tip without affecting its quick-drying performance; the ink exhibits excellent rheological properties, writes smoothly without clogging the pen, and has high color vibrancy. The formulation of this invention is environmentally friendly, primarily using water as a solvent, reducing the use of volatile organic compounds.