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Water-based ink and special decoloring agent thereof

A kind of ink and water-based technology, applied in the field of water-based ink and its special decolorizer, can solve the problem that the color material is difficult to decolorize, and achieve the effect of low price, suitable drying speed and good water solubility

Inactive Publication Date: 2011-11-09
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-black, green, brown, black and other color types, but the color materials selected for current ink products are all hard to decolorize

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Embodiment 1 The preparation of pure blue water-based ink

[0024] Weigh 0.5 g of polyvinyl alcohol and add it to 100 ml of water, heat to dissolve, then add 1.0 g of gum arabic, stir evenly, add 2 g of reactive brilliant blue B-RV and 0.5 g of reactive dark blue B-2GLN after cooling, and then add 4 ml of glycerin , 0.008 grams of sodium lauryl sulfate, 2 milliliters of absolute ethanol, and 2 grams of cinnamic acid, stirred and mixed, left to stand for 24 hours, filtered, and packaged.

Embodiment 2

[0025] Embodiment 2 Preparation of blue-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, add 2 g of active dark blue B-2GLN and 0.4 g of active black B-ED after cooling, then add 4 ml of glycerin, 0.01 2 grams of sodium dodecylbenzenesulfonate, 2 milliliters of absolute ethanol, and 2 grams of cinnamic acid, stirred and mixed, left to stand for 24 hours, filtered, and packaged.

Embodiment 3

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

[0028] Weigh 0.5 g of polyvinyl alcohol and add it to 100 ml of water, heat to dissolve, then add 1.0 g of shellac, stir evenly, add 2 g of reactive black B-ED, 0.2 g of reactive black KN-B and 0.1 g of reactive yellow 3RS after cooling, 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 pack.

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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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Patent Type & Authority Patents(China)
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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