Erasable environment-friendly white board ink and preparation method thereof

Abstract

The invention discloses erasable environment-friendly white board ink and a preparation method thereof. The ink comprises the following components by weight percent: 50.0-69.5% of organic solvent, 1.0-2.0% of erasable agent, 1.0-5.0% of film forming agent, 15.0-25.0% of quick drying agent, 5.0-10.0% of humectant, 3.5-5.0% of resin, and 5.0-8.0% of pigment. The preparation method comprises steps of (a) firstly adding the organic solvent into a pre-dispersing pot, and sequentially adding the film forming agent, humectant, resin and pigment while stirring to completely dissolve all the components; (b) adding the erasable agent, and fully mixing through stirring; (c) filtering. According to the ink and the preparation method, low alcohol is taken as the main solvent, and noncarcinogenic erasable agent and film forming agent are added as auxiliary components; the ink has advantages of having low cost, simple technology, easily erasable writing, and no pungent smell, and being environment-friendly and healthy to human bodies.

Description

technical field [0001] The invention relates to a whiteboard ink and a manufacturing method thereof, in particular to an erasable environment-friendly whiteboard ink and a manufacturing method thereof. Background technique [0002] With the rapid development of science and technology and the gradual improvement of living standards, how to maintain a healthy body and mind has attracted more and more attention. The dust pollution caused by the traditional chalk teaching mode is troubling more and more teachers and students. The emergence of whiteboard ink has brought hope to solve this problem. It is widely suitable for writing on the surface of various non-absorbent materials. For example, metal baking varnish boards, alloy boards, glass boards and polyester boards, etc., have the advantages of environmental protection, no pollution, and wipeability. [0003] Currently commercially available whiteboard inks are mainly made of fatty alcohols as solvents and other additives, m...

AI Technical Summary

Problems solved by technology

This inevitably brings some problems: (1) The stability is not high, and the ink is prone to sedimentation after several months of storage, and the finished pen will have problems such as different shades of the pen head and unsmooth writing. The pigment particles are too large and the dispersion is not thorough; (2) The moisturizing time is short, and the handwriting of the finished pen will become lighter and lighter after taking off the cap for an hour or two, which seriously affects the aesthetics of its writing; (3) Poor erasability , it becomes difficult to wipe off after 30 seconds of writing drying, or "ghost" appears; (4) has a pungent smell, because the existing inks mostly use fatty alcohols with long carbon chains as solvents, it is difficult to wipe them off when they are writing dry After that, it is very easy to volatilize some irritating odors, which is not conducive to human physical and mental health.

These shortcomings have greatly hindered the promotion and use of whiteboard inks. Therefore, in order to solve the above technical problems, it is necessary to provide an erasable environmentally friendly ink with high stability, good moisture retention, and no irritating odor.

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