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Preparation method of acrylate microemulsion with high solid content

An acrylate, high solid content technology, applied in the direction of ester copolymer adhesives, adhesive types, etc., can solve the problems of poor water resistance of the film, large amount of emulsifier, large particle size, etc., to achieve a stable polymerization system, The effects of reducing aggregates and increasing light transmittance

Inactive Publication Date: 2013-03-27
QINGDAO PENGHAI SOFT CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The particle size of the usual acrylate emulsion is large, about hundreds of nanometers, and the coating effect is poor. In recent years, the research on acrylate microemulsion has become a hot spot.
The more prominent problems in the conventional microemulsion polymerization system are the large amount of emulsifier and low monomer content. High emulsifier content will lead to poor water resistance of the film, and low solid content will make the fullness of the emulsion film unable to meet the strength requirements. Therefore, It will limit the application of microemulsions in the coating and adhesive industry. Therefore, reducing the amount of emulsifier in the system and increasing the solid content are still research hotspots in microemulsion polymerization.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Under the condition of 750r / min, 40 parts of distilled water, 4 parts of emulsifier sodium dodecyl sulfate (SDS), and 1 part of pH regulator sodium bicarbonate were stirred for 20 minutes to prepare a mixed solution. The temperature was raised to 70° C., and 0.25 parts of the initiator ammonium persulfate (APS) was added. Add 44 parts of butyl acrylate (BA), 40 parts of ethylene-ethyl acrylate (EEA), 4 parts of 2-ethyl ethyl acrylate (2-EHA) mixed monomers, and react for 2 hours. Raise the temperature to 90°C, increase the rotation speed to 1000r / min, add 0.1 part of cross-linking modifier N-methylolacrylamide (NMA), and react for 2 hours to prepare a high-solid content acrylate microemulsion.

[0017] The solid content of the acrylate microemulsion was 38%, and the amount of emulsifier was 2%.

Embodiment 2

[0019] Under the condition of 750r / min, 40 parts of distilled water, 4 parts of emulsifier sodium dodecyl sulfate (SDS), and 1 part of pH regulator sodium bicarbonate were stirred for 20 minutes to prepare a mixed solution. The temperature was raised to 70° C., and 0.25 parts of the initiator ammonium persulfate (APS) was added. Add 44 parts of butyl acrylate (BA), 40 parts of ethylene-ethyl acrylate (EEA), 4 parts of 2-ethyl ethyl acrylate (2-EHA) mixed monomers, and react for 2 hours. Raise the temperature to 90°C, increase the rotation speed to 1000r / min, add 0.4 parts of cross-linking modifier N-methylolacrylamide (NMA), and react for 2 hours to prepare a high-solid-content acrylate microemulsion.

[0020] The solid content of the acrylate microemulsion is 40%, and the amount of emulsifier is 2%.

Embodiment 3

[0022] Under the condition of 750r / min, 40 parts of distilled water, 4 parts of emulsifier sodium dodecyl sulfate (SDS), and 1 part of pH regulator sodium bicarbonate were stirred for 20 minutes to prepare a mixed solution. The temperature was raised to 70° C., and 0.25 parts of the initiator ammonium persulfate (APS) was added. Add 44 parts of butyl acrylate (BA), 40 parts of ethylene-ethyl acrylate (EEA), 4 parts of 2-ethyl ethyl acrylate (2-EHA) mixed monomers, and react for 2 hours. Raise the temperature to 90°C, increase the rotation speed to 1000r / min, add 0.6 parts of cross-linking modifier N-methylolacrylamide (NMA), and react for 2 hours to prepare a high-solid-content acrylate microemulsion.

[0023] The solid content of the acrylate microemulsion was 42%, and the amount of emulsifier was 2%.

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Abstract

The invention discloses a preparation method of acrylate microemulsion with high solid content. The preparation method comprises the steps: adding an initiator ammonium persulfate (APS) into a mixed solution including distilled water, an emulsifier and a PH regulator, adding mixed monomers including butyl acrylate (BA), ethylene-ethyl acrylate (EEA) and 2-ethylhexyl acrylate (2-EHA) for reaction, and adding a cross-linking modifier, namely, N-Methylol acrylamide (NMA), to prepare the acrylate microemulsion with high solid content. For the microemulsion, the amount of the used emulsifier is low, and the prepared acrylate microemulsion is high in solid content.

Description

technical field [0001] The invention relates to a preparation method of high-solid-content acrylate microemulsion, which belongs to the field of chemical industry. technical background [0002] Acrylate emulsion has good heat resistance, weather resistance and color retention, and its production cost is low. In addition to its obvious environmental protection advantages, it has been widely used in coatings, adhesives and floor polishes. field. Usually, the particle size of acrylate emulsion is large, about hundreds of nanometers, and the coating effect is poor. In recent years, the research of acrylate microemulsion has become a hot spot. The more prominent problems in the conventional microemulsion polymerization system are the large amount of emulsifier and low monomer content. High emulsifier content will lead to poor water resistance of the film, and low solid content will make the fullness of the emulsion film unable to meet the strength requirements. Therefore It wil...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F220/18C08F2/26C09J133/08
Inventor 于忠清赵红雷
Owner QINGDAO PENGHAI SOFT CO LTD
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