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Acid fuchsin writing liquid decolorizer

A technology of acid fuchsin and writing fluid, applied in the direction of chemical paint/ink remover, coating, etc., can solve the problems of transfer of writing fluid to other places and easy diffusion of writing fluid, and achieve unique formula and simple configuration , Environmentally friendly effect

Inactive Publication Date: 2011-08-17
SHANXI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, dry erasing still produces dust; while wet erasing can easily transfer the writing liquid to other places, such as rags, hands, etc., and the writing liquid is easy to spread when writing again

Method used

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  • Acid fuchsin writing liquid decolorizer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Embodiment 1. Get 10g sodium stearate, 30g raw gypsum, 17g magnesium sulfite, 0.5g p-hydroxyanisole, 0.5gpH regulator and 2g metal ion complexing agent and add 10mL water, stir evenly, transfer to the mold After molding, keep the surface wet within 48 hours, and dry naturally after 48 hours.

[0019] The written liquid decolorizer prepared above is placed in 300 milliliters of tap water solution for half an hour and can be used with a blackboard eraser, and the water can be continuously used, and it can be used for half a year. The writing liquid decolorizer can not only erase the handwriting of the acid magenta writing liquid, but also can erase the writing of the methyl blue writing liquid.

Embodiment 2

[0020] Embodiment 2. Get 10g sodium stearate, 30g raw gypsum, 18g magnesium sulfite, 0.5g p-hydroxyanisole, 0.5gpH regulator and 3g metal ion complexing agent and add 10mL water, stir evenly, transfer to the mold After molding, keep the surface wet within 48 hours, and dry naturally after 48 hours.

[0021] The written liquid decolorizer prepared above is placed in 500 milliliters of tap water solution for half an hour and can be used with a blackboard eraser, and the water can be continuously used, and it can be used for half a year. The writing liquid decolorizer can not only erase the handwriting of the acid magenta writing liquid, but also can erase the writing of the methyl blue writing liquid.

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PUM

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Abstract

The invention provides acid fuchsin writing liquid decolorizer, comprising the following components by weight percent: 45-54% of gypsum, 15-18% of sodium stearate, 25-30% of magnesium sulfite, 0.5-1.5% of p-hydroxyanisole, 0.5-1.5% of pH modulator and 2-5% of metal ion removing complexing agent. The decolorizer of the invention is mainly used for wiping handwriting of teaching writing liquid, hasgood stability and no pollution, can rapidly discolor the handwriting of acid fuchsin writing liquid, and writing can be carried out again after discoloring without spreading handwriting. When in use, the writing liquid decolorizer is placed in tap water solution for half an hour, after that, can be used by dipping with an eraser. The writing liquid decolorizer also can be used for decoloring methyl blue writing liquid.

Description

technical field [0001] The invention relates to a decolorizing agent for writing fluid, in particular to an acid dye decolorizing agent, more specifically an acid magenta decolorizing agent for writing fluid. Background technique [0002] In order to overcome the dust hazards brought by the chalk used in conventional teaching aids, whiteboards, matt panels and corresponding writing pens have appeared on the market, and their erasure mainly includes dry erasure and wet erasure. However, dry erasing still produces dust; while wet erasing can easily transfer the writing liquid to other places, such as rags, hands, etc., and the writing of the writing liquid is easy to spread when writing again. Contents of the invention [0003] The purpose of the present invention is to provide a kind of decolorizing agent of acid magenta writing fluid, this decolorizing agent has good stability, no pollution, can make the handwriting of acid magenta writing fluid fade quickly, can carry out...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D9/00
Inventor 王丽华卞伟马广文董川双少敏
Owner SHANXI UNIV
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