High-covering-power styrene-acrylate emulsion, synthesis method thereof and use thereof in aqueous printing ink

A technology of styrene-acrylic emulsion and water-based ink, which is applied in the field of ink, can solve the problems of poor water resistance and weather resistance, unstable operation, and easy clogging of printing plates, etc., to achieve stable operability, excellent printing adaptability, and not easy to bind skin effect

Active Publication Date: 2011-07-27
广东天龙油墨有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the preparation process of the core-shell styrene-acrylic emulsion in the prior art is complex, the raw materials are many, the cost is also high, and the operation is not very stable, so the styrene-acrylic emulsion in the prior art has poor hiding properties and cannot well meet the needs of ink printing. Medium and high network cable, high precision, high-speed printing requirements; in addition, the water resistance and weather resistance of the core-shell styrene-acrylic emulsion of the existing technology is still poor, when used with water-based ink, the ink is easy to skin, and it is easy to block the printing plate

Method used

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  • High-covering-power styrene-acrylate emulsion, synthesis method thereof and use thereof in aqueous printing ink

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] Add 417.32 grams of deionized water, 6.5 grams of composite emulsifier (nonylphenol polyoxyethylene ether, fatty alcohol polyoxyethylene ether sodium sulfate), 2.5 grams of ammonium persulfate initiator, and 3 grams of protective glue with stirring and dropping In the four-necked flask of the device, reflux condenser, and thermometer, the temperature was raised to 84° C., and 0.3 g of monoethanolamine was added to adjust the pH value at 7.5 to 8.8. Add 71.2 grams of methyl acrylate, 28.8 grams of acrylic acid, and 6.5 grams of tertiary dodecyl mercaptan into the head tank and mix well. Add the mixed monomers dropwise into the flask by "starvation method" within the temperature range of 84°C±2, and the dropwise addition time is 30 minutes. After the dropwise addition, keep warm for 30 minutes and add 16.38 g of monoethanolamine to adjust the pH value of the emulsion in the range of 7.1 to 8.0 to obtain a shell emulsion.

[0046] Add 3.5 grams of composite emulsifier (no...

Embodiment 2

[0048] In a four-neck flask with stirring, dropping device, reflux condenser, and thermometer, add 413.7 grams of deionized water, 0.4 grams of triethanolamine, a composite emulsifier (nonylphenol polyoxyethylene ether, nonylphenol polyoxyethylene (10) 6.6 grams of ether-2-sulfosuccinic acid monoester disodium salt), 3.1 grams of ammonium persulfate initiator, 7 grams of protective glue, and the temperature was raised to 84°C. Add 73.5 grams of butyl acrylate, 29.5 grams of acrylic acid, and 5.5 grams of β-phenyl β-n-dodecylthioethyl phenyl ketone into the high-level tank and mix evenly. "Method" drop the mixed monomers into the flask, and the dropping time is 30 minutes. After the dropwise addition, keep warm for 30 minutes and add 16.7 g of triethanolamine to adjust the pH value of the emulsion in the range of 7.1 to 8.0 to obtain a shell emulsion.

[0049] Dissolve 3.6 grams of composite emulsifier (nonylphenol polyoxyethylene ether, fatty alcohol polyoxyethylene ether sod...

Embodiment 3

[0051] In a four-neck flask equipped with stirring, dropping device, reflux condenser, and thermometer, add 418.87 grams of deionized water, 0.3 grams of ammonia water, a composite emulsifier (nonylphenol polyoxyethylene ether, 1-propylene oxide-2 hydroxyl Sodium propanesulfonate) 6 grams, ammonium persulfate initiator 2.35 grams, protective glue 6.5 grams, be warming up to 84 ℃. Add 69.5 grams of ethyl acrylate, 30.5 grams of acrylic acid, and 5.6 grams of tri-mercaptopropanol into the high-level tank and mix evenly. Add the mixed monomers dropwise into the flask by the "starvation method" within the temperature range of 84 °C ± 2. Add time is 30 minutes. After the dropwise addition, keep warm for 30 minutes and add 16.38 g of ammonia water to adjust the pH value of the emulsion in the range of 7.1 to 8.0 to obtain a shell emulsion.

[0052] Dissolve 3.2 grams of composite emulsifier (nonylphenol polyoxyethylene ether, fatty alcohol polyoxyethylene ether sodium sulfate) and ...

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Abstract

The invention relates to the field of printing ink and discloses high-covering-power styrene-acrylate emulsion, a synthesis method thereof and use thereof in aqueous printing ink. The preparation method comprises: mixing deionized water, an initiator, a lacquer and a composite emulsifier to obtain solution A; regulating the pH value; introducing nitrogen to remove oxygen; mixing a monomer with a molecular weight regulator to obtain solution B; dripping solution B into solution A to perform a chemical reaction; regulating the pH value of shell emulsion and heating to prepare shell emulsion; adding a composite emulsifier and an initiator into the synthesized shell emulsion; dripping a vinyl monomer to synthesize core-shell emulsion; and cooling, regulating the pH value and filtering to obtain the styrene-acrylate emulsion. The invention also provides aqueous printing ink using the high-covering-power styrene-acrylate emulsion. The preparation process is very simple, the reaction processis simple and easy to control, the operability is high, and the method is suitable for large-scale production. The aqueous printing ink disclosed by the invention is high in resolubility, is insusceptible to crusting and blocking printing plate and has high printing adaptability.

Description

technical field [0001] The invention relates to the ink field, in particular to a styrene-acrylic emulsion used for ink and an ink using the styrene-acrylic emulsion. Background technique [0002] As we all know, the surface of most paper products is not flat and smooth, and under the observation of a microscope, the surface of the paper is uneven. Therefore, when the general ink is printed alone, the flatness of the film-forming resin in the ink will be destroyed by the concave and convex structure of the paper surface, thus affecting the graphic printing quality of the paper. Using the core-shell emulsion as the carrier of the ink can play a good role in improving. [0003] The film-forming mechanism of the core-shell emulsion is: in the process of water volatilization in the emulsion, latex particles with a particle shape accumulate regularly to form a resin film with particles as the framework. When the core-shell emulsion is used as the carrier of the ink, when the wa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F212/08C08F218/08C08F220/14C08F220/06C08F220/18C08F2/30C08F2/26C09D11/02C09D11/08C09D11/106
Inventor 黄光海冯毅王大田余中华
Owner 广东天龙油墨有限公司
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