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Erasable ink and preparation method thereof

A technology of ink and tap water, applied in ink, household utensils, applications, etc., can solve the problems of easy clogging of the pen head, difficulty in cleaning, poor drying resistance, etc., and achieve deep and bright ink color, uniform ink flow, and long storage time long effect

Inactive Publication Date: 2011-03-30
刘海生
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These disclosed erasable inks or inks all have shortcomings such as light color, difficult to wipe off, poor drying resistance, and no environmental protection, especially as pigments or dyes for coloring materials and coating with rubber or resin. After the paint or dye particles are irregular in shape, it is easy to block the pen head

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] Weigh 5g of sodium dodecylbenzenesulfonate, dissolve it in 300ML water, pour it into a container, and then add 40g of methyl alcohol dissolved with 0.6g of 2,2-azobisisobutyronitrile and 20g of oil-soluble blue into the container Methyl acrylate; N into the vessel 2Oxygen was removed, the container was placed in a constant temperature water bath, the temperature was raised, and constant stirring was maintained throughout the reaction process, and the reaction was continued for another 6 hours when the temperature reached 60°C. After the reaction, the prepared microsphere suspension was poured into a beaker and allowed to stand for stratification. After standing and stratifying, pour off the upper liquid, dilute the precipitated color paste with water, and then let it stand and separate for washing. After repeated washing for three times, a micron-sized polymethyl methacrylate microsphere slurry will be formed. ; Then add 1g xanthan gum and 0.5g polyquaternium salt to t...

Embodiment 2

[0042] Take by weighing 15g sodium lauryl sulfate, be dissolved in 1000ML water, pour in the container, then add 140g to be dissolved in the container and have 2.8g 2, the formazan of 2-azobisisobutyronitrile and 70g oily fluorescent pigment (pink) butyl acrylate; N into the vessel 2 Oxygen was removed, the container was placed in a constant temperature water bath, the temperature was raised, and constant stirring was maintained throughout the reaction process, and the reaction was continued for another 6 hours when the temperature reached 60°C. After the reaction, the prepared microsphere suspension was poured into a beaker and allowed to stand for stratification. After standing and stratifying, pour off the upper liquid, dilute the precipitated color paste with water, and then let it stand and separate for washing. After repeated washing for three times, a micron-sized polybutylmethacrylate microsphere slurry will be formed. ; Then add 3.5g xanthan gum and 1.5g polyquaterni...

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Abstract

The invention discloses erasable ink and preparation method thereof, the ink does not block a pen head, is easy to wipe the ink marks and has better color effect and green environment protection. The ink comprises the following components in percentage by weight: 50 percent-60 percent of micrometer-grade coloring microsphere, 0.5 percent-1 percent of antibacterial agent, 0.3 percent-1 percent of thickening agent and the balance of common tap water or de-ionized water, wherein the micrometer-grade coloring microsphere consists of polymethylmethacrylate or butyl methacrylate coated with pigment or dye, and the grain diameter is between 1 micrometer and 10 micrometers. The ink is better to write and easier to wipe than the pencil without marks, and has the advantages of smooth writing, uniform ink flow, dense and bright color of the ink marks, long time for unbonneting, no pollution and environment protection, waterproof and sunproof written marks and long preservation time and the like.

Description

technical field [0001] The invention relates to a microsphere erasable ink and a preparation method thereof. Background technique [0002] At present, the ink and ink of ordinary writing pens used by consumers are difficult to erase once they are written on paper. In order to keep the rolls clean and tidy, primary and middle school students who are in the learning stage have to correct the mistakes. Nowadays, students often use correction fluid and correction stickers for modification; correction fluid is usually poisonous and has a pungent smell; correction stickers are difficult to paste, and if they are not properly pasted, they need to be torn off and pasted again, which will damage the paper. In addition, the color of the coating film of the correction fluid and the correction sticker is different from that of the paper, and has a certain thickness, which makes the paper after the correction seem to be riddled with holes and is very unattractive. This is extremely inc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D11/16C09D11/17
Inventor 刘海生
Owner 刘海生
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