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Preparation method of slow-drying waterborne acrylic resin

A water-based acrylic acid and acrylic acid technology, applied in the field of polymer materials, can solve the problems affecting the application of water-based acrylic resin, and achieve the effect of good moisture retention, convenient operation, and not easy to block the network

Inactive Publication Date: 2019-10-25
安徽聚合辐化化工有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Compared with traditional solvent-based coatings, water-based acrylic resins have the advantages of environmental protection and low VOC emissions, but the current water-based acrylic resins dry too fast, which affects the application of water-based acrylic resins in production

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] (1) add 5 parts of anionic emulsifier A-102, 3 parts of sodium bisulfate and 100 parts of deionized water in the reactor, heat up to 40 ° C, stir until the anionic emulsifier A-102 and sodium bisulfate are completely dissolved and mixed ;

[0024] (2) Add 0.2 parts of ammonium persulfate, 8 parts of styrene, 4 parts of acrylonitrile, 6 parts of n-butyl acrylate, 4 parts of ethyl acrylate in another reaction kettle, and then add 1 part of diacetone acrylamide after mixing evenly Pre-emulsification is carried out, and the pre-emulsion is obtained after being completely dissolved and mixed uniformly;

[0025] (3) Weigh 5% of the pre-emulsion and add it to the reaction kettle, add the pre-emulsion dropwise when the temperature is raised to 80°C, and react at a constant temperature for 4 hours;

[0026] (4) After stopping the reaction, keep the temperature for 1 hour, naturally cool down to 60° C. for post-processing, remove the residual monomer, adjust the pH, and filter t...

Embodiment 2

[0028] (1) add 7.5 parts of anionic emulsifier A-102, 4.5 parts of sodium bisulfate and 125 parts of deionized water in the reaction kettle, heat up to 45 ° C, stir until the anionic emulsifier A-102 and sodium bisulfate are completely dissolved and mixed ;

[0029] (2) In another reaction kettle, add 1.1 parts of sodium persulfate, 14 parts of n-butyl acrylate, 6 parts of ethyl acrylate, 12 parts of styrene, 8 parts of methyl methacrylate, and then add 1 part of dimethacrylate after mixing evenly Acetone acrylamide is pre-emulsified, and the pre-emulsion is obtained after being completely dissolved and mixed uniformly;

[0030] (3) Weigh 7.5% of the pre-emulsion and add it to the reaction kettle, add the pre-emulsion dropwise when the temperature is raised to 81°C, and react at a constant temperature for 4 hours;

[0031] (4) After stopping the reaction, keep the temperature for 1 hour, naturally cool down to 60° C. for post-processing, remove the residual monomer, adjust th...

Embodiment 3

[0033] (1) add 10 parts of anionic emulsifier A-102, 6 parts of sodium bisulfate and 150 parts of deionized water in the reaction kettle, heat up to 50 ° C, stir until the anionic emulsifier A-102 and sodium bisulfate are completely dissolved and mixed ;

[0034] (2) Add 0.2 parts of azobisisobutyronitrile, 18 parts of n-butyl acrylate, 12 parts of ethyl acrylate, 16 parts of styrene, 14 parts of methyl methacrylate in another reaction kettle, and then add after mixing evenly 5 parts of diacetone acrylamide are pre-emulsified, and the pre-emulsion is obtained after being completely dissolved and mixed uniformly;

[0035] (3) Weigh 10% of the pre-emulsion and add it to the reaction kettle, add the pre-emulsion dropwise when the temperature is raised to 82°C, and react at a constant temperature for 4 hours;

[0036] (4) After stopping the reaction, keep the temperature for 1 hour, naturally cool down to 60° C. for post-processing, remove the residual monomer, adjust the pH, and...

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PUM

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Abstract

The invention relates to the technical field of high polymer materials and particularly discloses to a preparation method of slow-drying waterborne acrylic resin. The preparation method comprises thesteps that a reactor filled with an emulsifier and inorganic salt is heated up to 40-50 DEG C, pre-emulsion composed of an acrylate hard monomer, an acrylate soft monomer and a cross-linking agent isadded, after even dispersing, the temperature is increased to 80-82 DEG C for a constant-temperature reaction, after the reaction is completed, the temperature is decreased to 40 DEG C, pH is adjusted, and filtering is conducted to obtain the slow-drying waterborne acrylic resin. The defects of the prior art are overcome, a production formula and a production method of the waterborne acrylic resinare optimized, the drying speed of the acrylic resin is decreased, and the performance of the acrylic resin is improved.

Description

technical field [0001] The invention relates to the technical field of polymer materials, in particular to a preparation method of a slow-drying water-based acrylic resin. Background technique [0002] Acrylic resins refer to polymers obtained by polymerizing acrylic acid or methacrylic acid derivatives as monomers or by copolymerizing them with other unsaturated monomers. Acrylic resin has good gloss and color retention, UV resistance, water and solvent resistance, weather resistance and other characteristics. The ink and coating products made from the main resin or auxiliary resin can be widely used in paper, plastic, automobile, electrical appliances, construction and other fields. [0003] Compared with traditional solvent-based coatings, water-based acrylic resins have the advantages of green environmental protection and low VOC emissions. However, the current water-based acrylic resins dry too fast, which affects the application of water-based acrylic resins in produc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F212/10C08F220/18C08F220/48C08F220/58C08F220/14C08F212/08C08F2/30C08F2/26
CPCC08F212/10C08F220/18C08F2/30C08F2/26C08F220/1804
Inventor 丁云吴昊天杨明虎胡中青朱亮
Owner 安徽聚合辐化化工有限公司
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