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Core-shell structured styrene-acrylic emulsion compound capable of resisting against ethanol elution and preparation method thereof

A core-shell structure, styrene-acrylic emulsion technology, applied in the field of emulsion coatings, can solve the problems of incomparability, limited promotion of water-based inks, and difficulty in further improving the drying rate of water-based inks, and achieves the effect of improving the ability of ethanol to dilute

Active Publication Date: 2017-10-27
SHANGHAI WEIKAI CHEM +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the limitation of the amount of ethanol added, the drying rate of water-based inks is difficult to further improve and cannot be compared with solvent-based inks, which ultimately greatly limits the promotion of water-based inks

Method used

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  • Core-shell structured styrene-acrylic emulsion compound capable of resisting against ethanol elution and preparation method thereof
  • Core-shell structured styrene-acrylic emulsion compound capable of resisting against ethanol elution and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0027] A method for preparing a core-shell structure styrene-acrylic emulsion resistant to ethanol dilution, the method comprises the following processing steps:

[0028] 1) Mix 0.3kg of sodium lauryl sulfate, 0.2kg of alkylphenol polyoxyethylene ether and 20kg of water, and then stir at high speed in the pre-emulsification tank. After about 5 to 10 minutes, add 5kg of styrene, 17kg of methyl methacrylate, 5kg of butyl acrylate, 20kg of isooctyl acrylate, and 3kg of acrylic acid, and continue to stir at room temperature for about 30 minutes at a stirring speed of 300-700rpm to obtain a nuclear monomer pre-emulsion;

[0029] 2) Mix 0.3kg of sodium lauryl sulfate, 0.2kg of alkylphenol polyoxyethylene ether and 20kg of water, and then stir at high speed in the pre-emulsification tank. After about 5 to 10 minutes, add 14kg of styrene, 14kg of α-methylstyrene, 11kg of methyl methacrylate, 5kg of isooctyl acrylate, and 6kg of acrylic acid, and continue to stir at room temperature fo...

Embodiment 2

[0034] A method for preparing a core-shell structure styrene-acrylic emulsion resistant to ethanol dilution, the method comprises the following processing steps:

[0035] 1) Mix 0.4kg of sodium lauryl sulfate, 0.1kg of alkylphenol polyoxyethylene ether and 15kg of water, and then stir at high speed in the pre-emulsification tank. After about 5 to 10 minutes, add 2kg of styrene, Methyl methacrylate 19kg, butyl acrylate 4kg, isooctyl acrylate 19kg, methacrylic acid 6kg, continue stirring at room temperature for about 30 minutes at a stirring speed of 300-700rpm to obtain a nuclear monomer pre-emulsion;

[0036] 2) Mix 0.4kg of sodium lauryl sulfate, 0.1kg of alkylphenol polyoxyethylene ether and 15kg of water, and then stir at high speed in the pre-emulsification tank. After about 5 to 10 minutes, add 21kg of styrene, 18kg of α-methylstyrene, 5kg of isooctyl acrylate, and 6kg of methacrylic acid, and continue to stir at room temperature for 30 minutes at a stirring speed of 300-...

Embodiment 3

[0041] A method for preparing a core-shell structure styrene-acrylic emulsion resistant to ethanol dilution, the method comprises the following processing steps:

[0042] 1) Mix 1kg of sodium lauryl sulfate, 0.25kg of alkylphenol polyoxyethylene ether and 25kg of water, and then stir at a high speed in a pre-emulsification tank. After about 5 to 10 minutes, add methyl methacrylate 15kg, styrene 9kg, butyl acrylate 25kg, methacrylic acid 1kg, continue stirring at room temperature for about 30 minutes at a stirring speed of 300-700rpm to obtain a nuclear monomer pre-emulsion;

[0043] 2) Mix 1 kg of sodium lauryl sulfate, 0.25 kg of alkylphenol polyoxyethylene ether and 25 kg of water, and then stir at high speed in the pre-emulsification tank. After about 5 to 10 minutes, add 24 kg of styrene, α - 16 kg of methyl styrene, 13 kg of isooctyl acrylate, and 7 kg of methacrylic acid, continue stirring at room temperature for 30 minutes at a stirring speed of 300-700 rpm to obtain a ...

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Abstract

The invention provides a core-shell structured styrene-acrylic emulsion compound capable of resisting against ethanol elution and a preparation method thereof. The styrene-acrylic emulsion compound comprises the following components: a styrene monomer, an acrylics monomer, an acidic functional monomer, an emulgator, a pH value buffering agent, a neutralizing agent and water. The preparation method comprises the following steps: respectively preparing nuclear monomer pre-emulsified liquid and shell monomer pre-emulsified liquid and utilizing the nuclear monomer pre-emulsified liquid and shell monomer pre-emulsified liquid to prepare the core-shell structured styrene-acrylic emulsion compound. The invention has the beneficial effects that the long-chain ester acrylics monomer with high cost, and low reaction activity and difficulty in compounding need not be introduced in a polymerization process; a stable core-shell structure is established; the capacity of the emulsion of resisting against ethanol elution is greatly promoted from a latex particle structure; and the infinite amount of alcohol can be directly added into the water-based ink prepared from the emulsion but the phenomena of thickening, demulsification, and the like, will not occur.

Description

technical field [0001] The invention relates to a core-shell structure styrene-acrylic emulsion composition resistant to ethanol dilution and a preparation method thereof, belonging to the technical field of emulsion coatings. Background technique [0002] With the development of the economy and the continuous improvement of people's awareness of environmental protection, governments at all levels and countries have become more and more strict in controlling the content of volatile organic compounds (VOC) in coatings and inks. Water-based ink is a new type of printing material. Compared with solvent-based ink, it greatly reduces the emission of VOC. At the same time, it is not flammable during the printing process and will not leave toxic and harmful substances in the printed matter, so it is more and more popular in the printing industry. . [0003] Polyacrylate compounds are widely used in water-based ink systems due to their excellent transparency, strength, chemical res...

Claims

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Application Information

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IPC IPC(8): C08F220/14C08F220/18C08F212/08C08F212/12C08F220/06C08F2/30C08F2/26C09D11/107
CPCC08F2/26C08F2/30C08F212/08C08F220/14C08F220/18C08F220/1808C09D11/107C08F220/06C08F212/12C08F220/1804
Inventor 董海普黄涛王玉春
Owner SHANGHAI WEIKAI CHEM
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