Self-matting emulsion and preparation method thereof

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

Active Publication Date: 2019-12-13
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 fuse 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 luster 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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  • Self-matting emulsion and preparation method thereof
  • Self-matting emulsion and preparation method thereof
  • Self-matting emulsion and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0046] A kind of self-dulling emulsion, it comprises polyurethane emulsion and acrylic emulsion, and the weight ratio of polyurethane emulsion and acrylic emulsion is 1:1;

[0047] Polyurethane emulsion comprises the raw material of following parts by weight:

[0048]

[0049] 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.

[0050] In this embodiment, the isocyanate is isophorone diisocyanate.

[0051] In this embodiment, the acidic substance is 2,2-dimethylolpropionic acid.

[0052] In this embodiment, the polyol is PPG with a molecular weight of 1000.

[0053] In this embodiment, the cross-linking monomer of the acrylic emulsion is hexanediol diacrylate.

[0054] In this embodiment, the particle size of the polyurethane emulsion is 15 μm; the particle size of the acrylic emulsion is 70 nm.

[0055] The preparation method of above-mentioned ...

Embodiment 2

[0064] A kind of self-dulling emulsion, it comprises polyurethane emulsion and acrylic emulsion, and the weight ratio of polyurethane emulsion and acrylic emulsion is 2:3;

[0065] Polyurethane emulsion comprises the raw material of following parts by weight:

[0066]

[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 hexamethylene diisocyanate.

[0069] In this embodiment, the acidic substance is 2,2-dimethylolbutyric acid.

[0070] In this example, the polyol is AAEG with a molecular weight of 800.

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

[0072] In this embodiment, the particle size of the polyurethane emulsion is 10 μm; the particle size of the acrylic emulsion is 50 nm.

[0073] The preparation method of above-mentioned a k...

Embodiment 3

[0082] A kind of self-dulling emulsion, it comprises polyurethane emulsion and acrylic emulsion, and the weight ratio of polyurethane emulsion and acrylic emulsion is 3:2;

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

[0084]

[0085] 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.

[0086] In this embodiment, the isocyanate is a combination of hexamethylene diisocyanate and toluene diisocyanate.

[0087] In this embodiment, the acidic substance is a combination of 2,2-dimethylolpropionic acid and 2,2-dimethylolbutyric acid.

[0088] In this example, the polyol is a combination of AABG and AABGEG with a molecular weight of 1500.

[0089] In this embodiment, the crosslinking monomer of the acrylic emulsion is a composition of hexanediol diacrylate and diacetone acrylamide.

[0090] In this embodiment, t...

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Abstract

The invention relates to the technical field of resin synthesis, in particular to a self-matting emulsion and a preparation method thereof. The self-matting emulsion comprises a micron-sized particlesize polyurethane emulsion and a nano-sized particle size acrylic emulsion, wherein the polyurethane emulsion comprises an isocyanate, an acidic substance, dibutyltin dilaurate, a polyol, triethylamine and water. The micron-sized particle size polyurethane emulsion is innovatively used as a matting agent, compared with a matting powder of the prior art, the polyurethane emulsion has good storage stability, the demulsification phenomenon cannot occur, and transparency of a paint film cannot be affected after being introduced into a coating system. Compared with an organosilicone-modified acrylic emulsion and a fluorine-modified acrylic emulsion in the prior art, the polyurethane emulsion has the advantage of low production cost. In addition, the self-matting emulsion has higher matting efficiency compared with the prior art. The preparation method of the self-matting emulsion has the characteristics that the process is simple, the production cost is low, and the method can be 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 Applications(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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