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Preparation method of covering emulsion used in water printing ink

A technology of covering emulsion and water-based ink, applied in the direction of ink, application, household appliances, etc., can solve the problems of poor performance, poor covering, and poor tinting strength of ink

Inactive Publication Date: 2003-04-16
广州擎天新材料研究开发有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, some acrylic emulsions commonly used in printing materials (such as water-based varnishes) are used to prepare water-based inks. add a lot of filler

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] In a three-necked flask with a stirrer and a thermometer, add 71 parts of deionized water and 9 parts of ammonia water, heat up to 60°C, add 20 parts of acrylic resin with a molecular weight of 5000 and an acid value of 240, stir at high speed, and keep warm at 60°C for 1 Hours, to obtain a solid content of 20% acrylic resin solution, the measured viscosity is 20 to 30 seconds, and the pH value is 8 to 9.

Embodiment 2

[0021] Add 39 parts of deionized water and 2 parts of sulfosuccinic acid polyoxyethylene octylphenol sodium salt to a four-necked flask equipped with a condenser, dropping device, stirrer, and thermometer, heat to 75°C, and add 0.4 parts of Potassium persulfate, add dropwise the following mixed monomers: 4 parts of methyl methacrylate, 0.2 parts of methylol acrylamide, add in 1 hour, keep warm at 75 °C for 1 hour; then add dropwise the following mixed monomers: methacrylic acid 3.5 parts of methyl ester, 3.5 parts of ethyl acrylate, 2.1 parts of methacrylic acid, add in 1 hour, keep warm at 75°C for 1 hour; then add the following mixed monomers dropwise: 27.5 parts of methyl methacrylate, 0.7 parts of methacrylic acid , 0.5 parts of methylol acrylamide was added in 5 hours, and kept at 75°C for 1 hour; after the third part of the monomer was added dropwise for one hour, 12 parts of 20% acrylic resin solution were added dropwise at the same time, and the addition was completed i...

Embodiment 3

[0023] The mixed monomer in the middle layer is composed of 3.1 parts of methyl methacrylate, 4.3 parts of butyl acrylate, and 2.4 parts of acrylic acid. Other formulas and processes are the same as in Example 2 to obtain a covering emulsion with a solid content of 49.1%.

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Abstract

A shielding emulsion for water ink is prepared from acrylic acid series monomer or unsaturated monomer, low-molecular acrylic resin as disperser, anionic-non ion two-in-one surfactant as emulsifier and persulfate as trigger through copolymerizing step by step under the condition of 60-90 deg.C, swelling and optical action. Its colloidal particle has three-layer structure "core-middle layer-shell". Its advantages are high shielding effect, weatherability, compatibility and viscosity stability, and gay colour.

Description

technical field [0001] The invention relates to a preparation method of a covering emulsion for water-based ink. Background technique [0002] As people's awareness of environmental protection continues to increase, more and more commodity packaging boxes are printed with water-based inks. Domestic traditional water-based ink manufacturers generally use modified water-soluble rosin resin solution as a linking material, and prepare water-based ink together with color paste. The modified water-soluble rosin resin is cheap and has strong tinting strength, but its weather resistance and water resistance are poor, and the overall performance of the prepared ink is poor. In recent years, acrylic emulsions have been gradually used as the binder of water-based inks. On the one hand, it can promote the dispersion of pigments in water and enhance the printing adaptability of the ink; on the other hand, the ink prepared with this emulsion has good weather resistance and water resista...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D11/107
Inventor 胡乐晖
Owner 广州擎天新材料研究开发有限公司
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