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High-solid content pure acrylate elastic emulsion

A pure acrylic elastic emulsion with high solid content technology, applied in the field of polymer emulsion, can solve the problems of dry film elasticity and low temperature flexibility, etc., to enhance the physical properties of the core shell, improve water resistance, water resistance and stain resistance strong effect

Active Publication Date: 2010-02-03
佛山市顺德区巴德富实业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the elasticity and low-temperature flexibility of the dry film are not enough, and the problem of cracking of the coating film cannot be completely solved.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Core monomer: methyl methacrylate 4% (weight percentage, the same below), butyl acrylate 15.5%, acrylonitrile 15%, allyl methacrylate 1%; shell monomer: methyl methacrylate 6% , butyl acrylate 13%, acrylonitrile 7.5%, methacrylic acid 1%, allyl polyoxyethylene ether ammonium sulfate 1%, ammonium persulfate 1%, water 35%.

Embodiment 2

[0031] Core monomer: methyl methacrylate 13% (weight percentage, the same below), butyl acrylate 7%, acrylonitrile 7.5%, allyl methacrylate 2%; shell monomer: methyl methacrylate 7% , butyl acrylate 14%, acrylonitrile 8%, methacrylic acid 3%, allyl polyoxyethylene ether 1.5%, ammonium persulfate 1%, potassium persulfate 1%, water 35%.

Embodiment 3

[0033] Core monomer: methyl methacrylate 4% (weight percentage, the same below), butyl acrylate 24%, acrylonitrile 7.5%, allyl methacrylate 1%; shell monomer: methyl methacrylate 6% , butyl acrylate 12%, acrylonitrile 7.5%, methacrylic acid 1%, allyl polyoxyethylene ether 1%, potassium persulfate 1%, water 35%.

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PUM

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Abstract

A high-solid content pure acrylate elastic emulsion used for preparing coatings for the outer walls of buildings is prepared by adopting a core-shell emulsion polymerization method. The formula of theelastic emulsion consist of the following components: 4-13% of methyl methacrylate, 7-24% of butyl acrylate, 7.5-15% of acrylonitrile, 1-5% of allyl methacrylate, 6-17% of shell monomer: methyl methacrylate, 12-24% of butyl acrylate, 7.5-15% of acrylonitrile, 1-3% of methacrylic acid, 1-5% of emulsifier, 1-3% of persulfate and 35% of water. Compared with the prior art, the prepared coatings for the outer walls have the advantages of strong water resistance and contamination resistance, good elasticity, less cracked shape of coating films, saved painting manpower and the like.

Description

technical field [0001] The present invention relates to architectural coatings, in particular to polymer emulsions in exterior wall coatings. Background technique [0002] Due to its excellent light resistance, weather resistance, corrosion resistance and low price, acrylate emulsion is now being widely used in exterior wall coatings of high-end buildings. However, the current acrylic exterior wall coatings usually have insufficient coating film thickness and the low-temperature brittleness of emulsion polymers. After a period of time, the painted buildings will have spider web cracks in the coating film or along with the wall. Cracks in the coating film appear due to the micro-cracking of cement sand ash. In order to overcome the above-mentioned shortcoming of acrylic acid ester exterior wall paint, Chinese invention patent application number is 98111639.6 discloses a kind of name and is called " pure acrylic acid elastic emulsion " technology. This technology uses a vari...

Claims

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Application Information

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IPC IPC(8): C08F220/18C08F220/48C08F220/14C08F216/20C08F216/14C08F2/30C08F2/26C09D133/06
Inventor 罗宇罗云
Owner 佛山市顺德区巴德富实业有限公司
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