Acrylate finishing coat core-shell emulsion with boiling water resistance and preparation method therefor

A technology of acrylate and core-shell emulsion, which is applied to biocide-containing paints, anti-fouling/underwater coatings, coatings, etc. It can solve problems such as difficult rainwater washing, sticking back, and accelerated coating surface pollution. Achieve excellent water whitening resistance, simple and easy-to-obtain raw materials, and excellent stain resistance

Inactive Publication Date: 2018-06-15
上海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

In recent years, due to the intensification of environmental pollution and the emission of a large amount of automobile exhaust, the pollution of the coating surface has been accelerated, especially in the south, because there are many high-temperature and rainy days, if there is a sudden heavy rain in high-temperature weather, it will cause the coating The surface temperature of the layer reaches 70°C or even higher, causing some traditional overcoat varnishes to stick back, causing the pollutants originally attached to the surface of the coating to adhere to the surface of the coating, making it difficult to be washed away by rain

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0038]In addition, the present invention also provides a method for preparing the acrylate overcoat core-shell emulsion, which specifically includes the following steps:

[0039] 1) Mix 20-30% emulsifier, 10-30% deionized water, 30-45% (meth)acrylate hard monomer, 80-95% (meth)acrylate soft sheet Body, 40-55% of -COOH-containing vinyl monomer, 40-55% of -COOH-free vinyl monomer, 50-65% of cross-linking monomer are placed in the emulsification tank, high-speed dispersion for 30min, Standby as the nuclear layer pre-emulsion;

[0040] 2) adding the initiator to 5-15% deionized water, stirring and dissolving as an aqueous solution of the initiator for subsequent use;

[0041] 3) Put 30-50% deionized water and 20-30% emulsifier in a reaction kettle with a thermometer, condensing reflux pipe and stirring paddle, stir and heat up to 70-75°C;

[0042] 4) Get 2-10% of the nuclear layer pre-emulsion prepared in step 1) and add it to the reaction kettle of step 3), after stirring for 5...

Embodiment 1

[0051] An acrylic ester overlay core-shell emulsion with boiling water resistance, comprising the following components in parts by weight: 0.5 part of emulsifier, 0.05 part of initiator, and (meth)acrylate hard monomer with higher Tg 20 parts, 5 parts of (meth)acrylate soft monomer with lower Tg, 0.3 parts of vinyl monomer containing -COOH, 0.3 parts of vinyl monomer without -COOH, 0.5 parts of crosslinking monomer , 0.3 parts of organosilicon monomer, 0.01 parts of pH regulator, 50 parts of deionized water.

[0052] Described emulsifier adopts sodium lauryl sulfate.

[0053] Described initiator adopts sodium persulfate.

[0054] The (meth)acrylate hard monomer is methyl methacrylate.

[0055] The (meth)acrylate soft monomer adopts ethyl acrylate.

[0056] Acrylic acid is used as the -COOH-containing vinyl monomer.

[0057] The -COOH-free vinyl monomer uses acrylamide.

[0058] The cross-linking monomer adopts glycidyl methacrylate.

[0059] The organosilicon monomer is ...

Embodiment 2

[0074] A kind of acrylate covering core-shell emulsion with boiling water resistance, by weight, includes the following components: 2 parts of emulsifier, 1 part of initiator, (meth)acrylate hard monomer with higher Tg 30 parts, 10 parts of (meth)acrylate soft monomer with lower Tg, 0.5 parts of vinyl monomer containing -COOH, 0.5 parts of vinyl monomer without -COOH, 2 parts of crosslinking monomer , 0.5 parts of silicone monomer, 0.03 parts of pH regulator, 55 parts of deionized water.

[0075] Described emulsifier adopts sodium dodecylsulfonate.

[0076] The initiator is mixed with ammonium persulfate and potassium persulfate at a ratio of 1:1.

[0077] The (meth)acrylate hard monomer is mixed with ethyl methacrylate and isopropyl methacrylate at a ratio of 2:1.

[0078] The (meth)acrylate soft monomer adopts n-butyl acrylate.

[0079] Itaconic acid is used as the -COOH-containing vinyl monomer.

[0080] Acrylonitrile is used as the -COOH-free vinyl monomer.

[0081] T...

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PUM

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Abstract

The invention discloses an acrylate finishing coat core-shell emulsion with boiling water resistance and a preparation method therefor. The emulsion is prepared from the following ingredients in partsby weight: 0.5-5 parts of emulsifier, 0.05-2 parts of initiator, 20-35 parts of (meth)acrylate hard monomer, 5-20 parts of (meth)acrylate soft monomer, 0.3-1 part of -COOH-containing vinyl monomer, 0.3-1 part of -COOH-free vinyl monomer, 0.5-5 parts of cross-linking monomer, 0.3-1 part of organosilicon monomer, 0.01-0.05 part of pH regulator and 50-65 parts of deionized water. According to the acrylate finishing coat core-shell emulsion with boiling water resistance and the preparation method therefor, an obtained paint film is free of water resistance abnormity, has excellent yellowing resistance and weather resistance and is very applicable to finishing coats of colorful stone-like paint; and according to the preparation method disclosed by the invention, used raw materials are simple and readily available, and thus, the method has a relatively obvious advantage in building coatings.

Description

technical field [0001] The invention relates to an acrylate overlay core-shell emulsion with boiling water resistance and a preparation method thereof, belonging to the technical field of polymer polymerization. Background technique [0002] With the improvement of people's living standards, the environmental protection and decorative effects of architectural coatings have attracted more and more people's attention and favor. Latex paints, real stone paints, colorful paints, textured paints, and granite paints have also developed rapidly. In recent years, due to the intensification of environmental pollution and the emission of a large amount of automobile exhaust, the pollution of the coating surface has been accelerated, especially in the south, because there are many high-temperature and rainy days, if there is a sudden heavy rain in high-temperature weather, it will cause the coating The surface temperature of the layer reaches 70°C or even higher, causing some tradition...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F220/14C08F220/18C08F220/06C08F220/56C08F220/32C08F230/08C08F222/02C08F220/46C08F212/36C08F222/14C08F220/54C08F220/48C09D143/04C09D133/26C09D5/16C09D5/29
CPCC08F220/14C08F220/18C08F220/1804C09D5/1662C09D5/29C09D133/26C09D143/04C08F220/06C08F220/56C08F220/54C08F220/48C08F220/325C08F230/08C08F220/1803C08F222/02C08F220/46C08F212/36C08F222/102
Inventor 刘超张城平黄斌郑玉涛
Owner 上海巴德富实业有限公司
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