Whiteboard pen ink capable of fading with water

Abstract

The invention relates to whiteboard pen ink capable of fading with water, and belongs to the technical field of stationery products. The green, environmentally-friendly and color-saturated whiteboardpen ink capable of fading with water is prepared by using sodium hydroxide and thymolphthalein as a solute, dissolving the sodium hydroxide and thymolphthalein in a solvent matched by water and ethanol, using a principle of color change of an indicator to prepare a color developing agent; and adding a film-forming agent PVB, surfactant DowFAX2A1 and Span-20, wetting dispersant OT-75, propylene glycol and glycerol, and drier propylene glycol monomethyl ether auxiliary agents. The results show that when ethanol is 48.25%, water is 36.19%, alkali is 1.2%, indicator is 6.63%, film-forming agent is1.2%, surfactant is 3.6%, dispersant 1. 08%, drier is 1.8%, ink performance achieves the best result. Ink is smooth in writing and stable in performance, has no pollution, no irritating odor and canbe wiped clean with clear water while writing on the glossy and matt panels.

Description

Technical field [0001] The invention discloses a whiteboard pen ink that can fade with water, and belongs to the technical field of stationery. Background technique [0002] In recent years, whiteboard pens have become popular internationally for common office and teaching writing. Its characteristics are the convenience of use of whiteboard markers, the fluency of writing, dust-free wipeability, environmental safety and other performance and characteristics, which are adapting to the trend of rapid changes in teaching aids and office supplies. [0003] After decades of continuous improvement in the development of foreign whiteboard pen inks, great breakthroughs have been made in formulas and processes. The main component solvents have evolved from the early toxic esters, benzene, ketones and other mixed solvents to the less toxic alcohols and water as the main solvents. [0004] In order to cope with the development of my country's education, a large number of cities such as Shang...

AI Technical Summary

Problems solved by technology

It not only brings the problem of poor sense of use, but also affects the progress of normal office teaching, which brings great inconvenience

[0006] From this point of view, our country started relatively late in the production and research of whiteboard pen ink, and its development is relatively backward. It can only passively imitate and introduce, and lacks its own characteristics in this field.