Water-borne white board pen ink capable of being wiped dryly or with wiping agent and wiping agent thereof

Abstract

The invention discloses a water-borne white board pen ink capable of being wiped dryly or with wiping agent and the wiping agent thereof. The ink mainly comprises distilled water, film-forming resin, flatting agent, sulfate, castor oil, interfacial agent, color-developing agent, drier and isothiazolinone. The ink is equipped with a special wiping agent. The white board ink uses water as solvent and colorant which reacts with reducer at normal temperature and voltage and is decolorized as the color-developing agent. The handwriting can be wiped dryly in a physical wiping manner and with the wiping agent in a chemical reaction wiping manner. The invention has the advantages of saving energy, environmental protection, no poison and pungent smell, easy writing and wiping, simple manufacture technology, low use cost and stable performance after long-term placement. The ink does not leak into the board face and cause pollution even after long-term use.

Description

technical field [0001] The invention relates to a writing ink and a remover, in particular to a dry-erasable and wet-erasable water-based whiteboard ink and a wiper suitable for writing on a smooth, non-absorbent dust-free board. Background technique [0002] Traditional teaching blackboard writing uses chalk made of gypsum as the main raw material. Dust flies up when writing on the blackboard and wiping the blackboard, which seriously pollutes the classroom environment and endangers the health of teachers and students. In order to solve the above dust pollution problem, there are many kinds of dust-free writing blackboard inks on the market. The ink is injected into the matching writing pen and written on the matching dust-free writing board, which can replace chalk for teaching blackboard writing and office notes. These inks mainly contain three kinds, and the first kind is the solvent-based ink that is main component with volatile organic solvent, color (dye) material and...

AI Technical Summary

Problems solved by technology

These inks mainly contain three kinds, and the first kind is the solvent-based ink that is main component with volatile organic solvent, color (dye) material and other additives, for example " white board pen ink and its manufacture method (application number: CN200610098357.3 )” belongs to this type of ink. This type of ink can be written on the supporting writing board. It has the advantages of being easy to write, easy to erase, and dust-free. It can be wiped clean by physical wiping with a sponge or soft cloth eraser. However, the ink production process is complex, costly, and volatile. Organic solvents are easy to pollute the air environment. After writing for a period of time, the ink slowly penetrates into the board surface and causes dirty boards. The daily maintenance of the board surface is difficult.

[0003] The second type of ink is water-based ink with water, pigment and other additives as the main components. For example, "water-based whiteboard pen ink (application number: 200610012914.5) belongs to this type of ink. Writing on the matching writing board has the advantages of easy writing, easy erasing, and dust-free. You can use a sponge or soft cloth eraser to dry erase the handwriting on the blackboard by physical wiping. However, the production process of the ink is complicated and the storage stability is poor. After writing for a period of time, the ink slowly seeps into the board surface to cause stains, and the daily maintenance of the board surface is difficult

However, when using a chemical reaction method to wet erase the writing on the blackboard, it is necessary to wait for the board to dry before performing the second writing on the blackboard, which may cause inconvenience in some occasions.

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