Water-based ink and special decoloring agent thereof

A technology of decolorizing agent and ink, applied in the direction of chemical paint/ink remover, ink, application, etc., can solve the problem that the color material is difficult to decolorize, and achieve the effect of low price, appropriate drying speed, and smooth writing

Inactive Publication Date: 2010-02-10
SHANGHAI WUZHIFENG INFORMATION TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Existing inks include iron tannate-based blue-black inks, dye-based inks and pigment-based inks, covering red, pure blue, blue-

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0023] Example 1 Preparation of pure blue water-based ink

[0024] Weigh 0.5 g of polyvinyl alcohol into 100 ml of water, heat to dissolve, then add 1.0 g of gum arabic, stir evenly, after cooling, add 2 g of Reactive Brilliant Blue B-RV and 0.5 g of Reactive Dark Blue B-2GLN, and then add 4 ml of glycerin , 0.008 grams of sodium lauryl sulfate, 2 milliliters of absolute ethanol, 2 grams of cinnamic acid, stir and mix, let stand for 24 hours, filter, and package.

Example Embodiment

[0025] Example 2 Preparation of blue and black water-based ink

[0026] Weigh 0.5 g of polyvinyl alcohol into 100 ml of water, heat to dissolve, then add 1.0 g of gelatin, stir evenly, after cooling, add 2 g of activated dark blue B-2GLN and 0.4 g of activated black B-ED, then add 4 ml of glycerin and 0.01 G sodium dodecylbenzene sulfonate, 2 ml absolute ethanol, 2 g cinnamic acid, stir and mix, let stand for 24 hours, filter, and package.

Example Embodiment

[0027] Example 3 Preparation of black water-based ink

[0028] Weigh 0.5 g of polyvinyl alcohol into 100 ml of water, heat to dissolve, then add 1.0 g of shellac, stir evenly, after cooling, add 2 g of Reactive Black B-ED, 0.2 g of Reactive Black KN-B and 0.1 g of Reactive Yellow 3RS. Then add 4 ml of ethylene glycol, 0.012 g of Triton-100, 2 ml of absolute ethanol, and 2 g of cinnamic acid, stir and mix, let stand for 24 hours, filter, and package.

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PUM

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Abstract

The invention discloses a water-based ink and a special decoloring agent thereof, and the mixing proportion of the water-based ink is as follows: 2-4g of active dye, 1-2g of polymer, 3-5ml of glycerol, 0.01-0.02g of sodium dodecyl sulfate, 1-2ml of ethanol, 2-3g of cinnamic acid and 100ml of water. The decoloring agent consists of a reducing agent, an antioxidant and a dispersant. The ink has theadvantages of bright color, good water solubility and easy degradation, can use the special decoloring agent for carrying out decoloring on written words and is simultaneously conductive to decoloring, recycling and reutilization of waste paper.

Description

technical field [0001] The invention relates to writing ink, in particular to an easily decolorized water-based ink and a special decolorizer thereof. Background technique [0002] With the improvement of people's awareness of environmental protection, people's requirements for ink are also changing, not only requiring ink to have a certain color fastness, but also requiring easy removal of handwriting when decolorization is required. [0003] Existing inks include iron tannate-based blue-black inks, dye-based inks and pigment-based inks, covering red, pure blue, blue-black, green, brown, black and other color types, but the color materials selected for current ink products are all Difficult to remove color. Chinese patent CN87102550A discloses a kind of water-based ink and CN1109484A discloses water-soluble black ink and its manufacturing method. Both select direct dyes as the main colorant. This type of dye has poor water solubility and is difficult to degrade. It is not ...

Claims

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Application Information

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IPC IPC(8): C09D11/16C09D9/04C09D11/17
Inventor 鞠东蔡雪梅杨修仕董川双少敏
Owner SHANGHAI WUZHIFENG INFORMATION TECH
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