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Hydroxyacrylic emulsion and preparation method thereof

A technology of hydroxy acrylic acid and acrylic acid ester, applied in the direction of coating, can solve the problems of decreased mechanical strength of paint film, poor dispersion, uneven film surface, etc., and achieve the effect of improving matting effect and excellent matting effect.

Active Publication Date: 2019-03-29
东莞大宝化工制品有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The traditional physical matting is to add matting powder to make the film surface uneven, light scattering, resulting in matting effect
However, it is prone to problems of poor dispersion, paint storage problems, poor transparency of the coating film, and a decrease in the mechanical strength of the overall paint film due to film-forming defects

Method used

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  • Hydroxyacrylic emulsion and preparation method thereof
  • Hydroxyacrylic emulsion and preparation method thereof
  • Hydroxyacrylic emulsion and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] The hydroxyacrylic acid emulsion of the present embodiment, in parts by weight, the preparation raw materials include:

[0034]

[0035] Wherein, the oligomer, in parts by weight, includes 80 parts of modified silicone oil (its molecular weight is 5100), 3 parts of isophorone diisocyanate, 2 parts of methacrylate-2-hydroxyethyl ester and 0.1 parts parts of tetraphenyltin.

[0036] Adopt above-mentioned composition to prepare the preparation method of hydroxyacrylic acid emulsion, its preparation step comprises:

[0037] (1) To prepare oligomers, weigh 80 parts of modified silicone oil (its molecular weight is 5100) and 3 parts of isophorone diisocyanate to react at 70°C for 1 hour, and then add 2 parts of 2-Hydroxyethyl methacrylate and 0.1 part of tetraphenyltin continued to react at 70°C for 1 hour, and when the residual amount of isocyanate groups was measured to be 0, the reaction was stopped to obtain an oligomer;

[0038] (2) Preparation of hydroxyacrylic aci...

Embodiment 2

[0044] The raw materials for the preparation of the hydroxyacrylic acid emulsion in this example are the same as those in Example 1, except that the molecular weight of the modified silicone oil in this example is 3206, while the molecular weight of the modified silicone oil in Example 1 is 5100.

[0045] The preparation method of the hydroxyacrylic acid emulsion of this embodiment is the same as that of Example 1, and will not be described in detail here.

Embodiment 3

[0047] The raw materials for the preparation of the hydroxyacrylic acid emulsion in this example are the same as those in Example 1, except that the molecular weight of the modified silicone oil in this example is 1810, while the molecular weight of the modified silicone oil in Example 1 is 5100.

[0048] The preparation method of the hydroxyacrylic acid emulsion of this embodiment is the same as that of Example 1, and will not be described in detail here.

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Abstract

The invention provides a hydroxyacrylic emulsion. The hydroxyacrylic emulsion comprises, by weight, 5-30 parts of a high-glass transition temperature acrylate, 0-15 parts of a low-glass transition temperature acrylate, 1-2 parts of an initiator, 20-120 parts of a solvent, 1-4 parts of a chain transfer agent, 5-20 parts of an oligomer, 2-25 parts of hydroxy group-containing acrylate, 5-10 parts ofcarboxylic acid-containing acrylate, 3-5 parts of a neutralizing agent and 40-50 parts of water, wherein the oligomer comprises, by weight, 80-96 parts of a compound A, 2-10 parts of a diisocyanate, 2-10 parts of the hydroxy group-containing acrylate and 0.1-0.5 part of a catalyst, and the compound A is a non-polar compound containing hydroxyl groups at both terminals. The hydroxyacrylic emulsionhas the advantages of excellent matting effect, excellent adhesion, excellent hardness, excellent water resistance and excellent storage stability. The invention also provides a preparation method ofthe hydroxyacrylic emulsion.

Description

technical field [0001] The invention relates to the technical field of coatings, in particular to a hydroxyacrylic acid emulsion and a preparation method thereof. Background technique [0002] In recent years, with the gradual improvement of people's living standards, in the use of wooden furniture, they gradually feel that high-gloss high-gloss coatings with high gloss reflect light after film formation, which greatly damages visual ability. In addition, people's aesthetic concept combines leisure life and fashion taste, and the demand for low-gloss coatings with a soft and elegant appearance has increased significantly. Therefore, matting coatings have been valued. In recent years, people's requirements for environmental protection and health have been increasing, and water-based coatings have gradually received attention. Water-based coatings can be divided into glossy, matte, and semi-matte according to their gloss. Therefore, it is necessary to add matting substances ...

Claims

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Application Information

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IPC IPC(8): C08F283/12C08F220/14C08F220/18C08F220/06C08F220/20C09D133/12C09D183/04
CPCC08F283/12C09D133/066C08F220/14C08L83/04
Inventor 陈贺生刘承祖
Owner 东莞大宝化工制品有限公司
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