Core-shell type acrylate emulsion and preparation method thereof

An acrylate and core-shell type technology, which is applied in the field of core-shell acrylate emulsion and its preparation, can solve the problems of poor water resistance and achieve the effects of improved water resistance, high stability, and narrow particle size distribution

Active Publication Date: 2013-04-10
广东蓝羽新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are generally some deficiencies in water-based emulsions at present, such as poor water resistance

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0012] Under the conditions of 65°C and 600r / min, 10 parts of methacryloxypropyltriethoxysilane (KH570), 4 parts of sodium dodecylsulfonate (DBS) and 1 part of ammonium persulfate ( KPS) was dissolved in 40 parts of distilled water. Add 20 parts of methyl methacrylate (MMA) and ethyl acrylate (BA) mixed monomers, and carry out modification reaction with KH570, wherein the mass ratio of MMA to BA is 2:1, and react for 2 hours. The remaining 10 parts of MMA and BA were added, and the mixture was stirred and reacted at 90° C. and 1000 r / min for 4 hours to prepare a core-shell acrylate emulsion.

[0013] The water absorption rate of the core-shell acrylate emulsion film was 11.2%.

Embodiment 2

[0015] Under the conditions of 65°C and 600r / min, 13 parts of methacryloxypropyltriethoxysilane (KH570), 4 parts of sodium dodecylsulfonate (DBS) and 1 part of ammonium persulfate ( KPS) was dissolved in 40 parts of distilled water. Add 20 parts of methyl methacrylate (MMA) and ethyl acrylate (BA) mixed monomers, and carry out modification reaction with KH570, wherein the mass ratio of MMA to BA is 2:1, and react for 2 hours. The remaining 10 parts of MMA and BA were added, and the mixture was stirred and reacted at 90° C. and 1000 r / min for 4 hours to prepare a core-shell acrylate emulsion.

[0016] The water absorption rate of the core-shell acrylate emulsion film was 10.1%.

Embodiment 3

[0018] Under the conditions of 65°C and 600r / min, 14 parts of methacryloxypropyltriethoxysilane (KH570), 4 parts of sodium dodecylsulfonate (DBS) and 1 part of ammonium persulfate ( KPS) was dissolved in 40 parts of distilled water. Add 20 parts of methyl methacrylate (MMA) and ethyl acrylate (BA) mixed monomers, and carry out modification reaction with KH570, wherein the mass ratio of MMA to BA is 2:1, and react for 2 hours. The remaining 10 parts of MMA and BA were added, and the mixture was stirred and reacted at 90° C. and 1000 r / min for 4 hours to prepare a core-shell acrylate emulsion.

[0019] The water absorption rate of the core-shell acrylate emulsion film was 8.6%.

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Abstract

The invention discloses a core-shell type acrylate emulsion and a preparation method thereof. The core-shell type acrylate emulsion is prepared by using methyl methacrylate (MMA) and ethyl acrylate (BA) as mixing monomers, modifying by using methylacryloyl oxygen propyl triethoxy silane (KH570) and by using a semi-continuous emulsion polymerization method. The prepared acrylic ester has better water resistence.

Description

technical field [0001] The invention relates to a core-shell type acrylate emulsion and a preparation method thereof, belonging to the field of chemical industry. technical background [0002] The synthesis of core-shell polymer emulsion is a new technology developed on the basis of seed emulsion polymerization. On the premise of not changing the emulsion monomer composition, the emulsion particle structure can be changed, thereby improving the emulsion performance. Silicone-acrylate microemulsion has good light transmission and stability, and also has excellent heat resistance, weather resistance and chemical resistance. However, there are some deficiencies generally in water-based emulsions at present, such as poor water resistance. In this paper, the semi-continuous emulsion polymerization method is used to prepare the core seed emulsion first, and then prepare the core-shell acrylate to improve its water resistance. Contents of the invention [0003] The object of t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F220/14C08F220/18C08F230/08C08F2/26
Inventor 王敬花朱新勇崔成来
Owner 广东蓝羽新材料科技有限公司
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