A kind of self-extinction emulsion and preparation method thereof

A self-extinction and emulsion technology is applied in the field of self-extinction emulsion and its preparation, which can solve the problems of high price of silicon modification additives, unsatisfactory transparency and low extinction efficiency, and achieves obvious price advantages, low production costs, surface densification effect

Active Publication Date: 2021-07-30
东莞大宝化工制品有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] (1) Use nano-scale matting powder or modified matting powder to make it easier to integrate with nano-scale latex particles by directly changing the matting powder itself. The advantage of this method is that the degree of improvement is obvious, but the cost is expensive
[0006] (2) Use silicone-modified acrylic emulsion to reduce the gloss of the acrylic emulsion itself through silicon modification, but this method still has technical difficulties, and the price of silicon-modified additives is expensive
However, the matting efficiency of the self-dulling emulsion in the prior art is not high enough, the transparency is not ideal enough, and the production cost is not low enough

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0059] A self-matting emulsion, which includes polyurethane emulsion and acrylic emulsion, the weight ratio of polyurethane emulsion and acrylic emulsion is 1:1;

[0060] Polyurethane emulsion comprises the raw material of following parts by weight:

[0061] 4 parts isocyanate

[0062] 1.5 parts acidic substance

[0063] 0.2 parts of dibutyltin dilaurate

[0064] 12 parts polyol

[0065] 0.8 parts of triethylamine

[0066] 30 parts of water;

[0067] Wherein, the polyurethane emulsion is a polyurethane emulsion with a particle size of micron, and the acrylic emulsion is an acrylic emulsion with a particle size of nanometer.

[0068] In this embodiment, the isocyanate is isophorone diisocyanate.

[0069] In this example, the acidic substance is 2,2-dimethylolpropionic acid.

[0070] In this example, the polyol is PPG with a molecular weight of 1000.

[0071] In this embodiment, the cross-linking monomer of the acrylic emulsion is hexanediol diacrylate.

[0072] In this e...

Embodiment 2

[0082] A self-matting emulsion, which includes polyurethane emulsion and acrylic emulsion, the weight ratio of polyurethane emulsion and acrylic emulsion is 2:3;

[0083] Polyurethane emulsion comprises the raw material of following parts by weight:

[0084] 3 parts isocyanate

[0085] 1 part acid

[0086] 0.1 parts of dibutyltin dilaurate

[0087] Polyol 8.5 parts

[0088] 0.5 parts of triethylamine

[0089] 25 parts of water;

[0090] Wherein, the polyurethane emulsion is a polyurethane emulsion with a particle size of micron, and the acrylic emulsion is an acrylic emulsion with a particle size of nanometer.

[0091] In this embodiment, the isocyanate is hexamethylene diisocyanate.

[0092] In this example, the acidic substance is 2,2-dimethylolbutyric acid.

[0093] In this example, the polyol is AAEG with a molecular weight of 800.

[0094] In this embodiment, the cross-linking monomer of the acrylic emulsion is diacetone acrylamide.

[0095] In this example, the ...

Embodiment 3

[0105] A self-matting emulsion, which includes polyurethane emulsion and acrylic emulsion, the weight ratio of polyurethane emulsion to acrylic emulsion is 3:2;

[0106] Polyurethane emulsion comprises the raw material of following parts by weight:

[0107] 5 parts isocyanate

[0108] 2 parts acid

[0109] 0.3 parts of dibutyltin dilaurate

[0110] Polyol 17.5 parts

[0111] 1 part triethylamine

[0112] 35 parts of water;

[0113] Wherein, the polyurethane emulsion is a polyurethane emulsion with a particle size of micron, and the acrylic emulsion is an acrylic emulsion with a particle size of nanometer.

[0114] In this embodiment, the isocyanate is a combination of hexamethylene diisocyanate and toluene diisocyanate.

[0115] In this embodiment, the acidic substance is a combination of 2,2-dimethylolpropionic acid and 2,2-dimethylolbutyric acid.

[0116] In this example, the polyol is a combination of AABG and AABGEG with a molecular weight of 1500.

[0117] In this...

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Abstract

The invention relates to the technical field of resin synthesis, in particular to a self-dulling emulsion and a preparation method thereof. The self-dulling emulsion includes a polyurethane emulsion with a micron-sized particle size and an acrylic emulsion with a nano-sized particle size. The polyurethane emulsion includes isocyanate and acidic substances. , dibutyltin dilaurate, polyols, triethylamine and water. The present invention innovatively uses polyurethane emulsion with micron particle size as the matting agent, which has better storage stability and no demulsification phenomenon compared with the prior art matting powder, and will not affect the paint after being introduced into the coating system. film transparency. And compared with the organic silicon-modified acrylic emulsion and the fluorine-modified acrylic emulsion in the prior art, it has the advantage of low production cost. In addition, the self-matting emulsion of the present invention has higher matting efficiency than the prior art. The preparation method of the self-extinction emulsion has the characteristics of simple process, low production cost and being suitable for large-scale production.

Description

technical field [0001] The invention relates to the technical field of resin synthesis, in particular to a self-extinction emulsion and a preparation method thereof. Background technique [0002] In recent years, with the formulation of national environmental protection policies and the strengthening of local governments' supervision of coating companies in terms of environmental protection, the direction of water-based wood coatings has developed rapidly, and the growth rate of matte coatings is particularly obvious. [0003] From a technical point of view, the current matte paint basically uses matting powder as a matting agent to increase the roughness of the paint film surface, thereby achieving a matting effect. However, the introduction of matting agents into the coating system often brings other problems. For example, the specific gravity of matting powder is high, which causes storage stability problems, or the dispersibility of matting powder is generally average, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L33/04C08L75/08C08L75/06C08G18/66C08G18/48C08G18/34C08G18/42C09D133/04C09D175/06C09D175/08
CPCC08G18/348C08G18/4018C08G18/4202C08G18/4238C08G18/48C08G18/6659C08G18/6692C08L33/04C09D133/04C08L75/06C08L75/08
Inventor 何伟豪
Owner 东莞大宝化工制品有限公司
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