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A kind of modified hydroxyacrylic acid aqueous dispersion with matt effect and preparation method thereof

A technology of hydroxy acrylic acid and light effect, applied in the direction of coating, etc., can solve the problems of precipitation and flocculation of matting agent, affecting matting effect, etc., and achieve the effect of simple reaction

Active Publication Date: 2020-09-25
SUZHOU JIREN HIGH TECH MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The traditional matt paint preparation is to disperse various matting agents (such as fumed silica, wax emulsion, etc.) in the resin solution through a high-speed dispersion process with the help of external additives, so the selection of additives in this process , The choice of resin and the choice of dispersion process must be well matched with the selected matting agent, otherwise it is easy to cause matting agent precipitation and flocculation, which will affect the matting effect

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] A modified hydroxyacrylic acid aqueous dispersion with a matte effect, in terms of mass percentage, the raw materials for preparing the modified hydroxyacrylic acid aqueous dispersion include:

[0031] Methyl methacrylate, 35wt%;

[0032] Isooctyl acrylate, 5wt%;

[0033] Acrylic acid, 3.1 wt%;

[0034] Polyethylene oxide, 0.1wt%;

[0035] N,N-dimethylethanolamine, 5wt%;

[0036] Organic solvent, 5wt%;

[0037] Deionized water, 43.8wt%;

[0038] Initiator, 2wt%;

[0039] Chain transfer agent, 1 wt%.

[0040] Among them, the molecular weight of polyethylene oxide is 1×10 6 , the organic solvent is a 1:1 mixed solvent of ethylene glycol monobutyl ether and 100# mineral spirits, the initiator is tert-amyl peroxybenzoate, and the chain transfer agent is dodecyl mercaptan.

[0041] The specific steps for preparing the above-mentioned modified hydroxyacrylic acid aqueous dispersion with matte effect are as follows:

[0042] Step 1: Dissolve polyethylene oxide in an o...

Embodiment 2

[0047] A modified hydroxyacrylic acid aqueous dispersion with a matte effect, in terms of mass percentage, the raw materials for preparing the modified hydroxyacrylic acid aqueous dispersion include:

[0048] Methyl methacrylate, 20wt%;

[0049] Isooctyl acrylate, 5.6wt%;

[0050] Acrylic acid, 6.2wt%;

[0051] Polyethylene oxide, 1wt%;

[0052] N,N-dimethylethanolamine, 10wt%;

[0053] Organic solvent, 3.5wt%;

[0054] Deionized water, 50wt%;

[0055] Initiator, 2.5wt%;

[0056] Chain transfer agent, 1.2 wt%.

[0057] Among them, the molecular weight of polyethylene oxide is 1×10 5 , the organic solvent is a 5:1 mixed solvent of ethylene glycol monobutyl ether and 100# solvent naphtha, the initiator is di-tert-amyl peroxide, and the chain transfer agent is dodecyl mercaptan.

[0058] The specific steps for preparing the above-mentioned modified hydroxyacrylic acid aqueous dispersion with matte effect are as follows:

[0059] Step 1: Dissolve polyethylene oxide in an ...

Embodiment 3

[0064] A modified hydroxyacrylic acid aqueous dispersion with a matte effect, in terms of mass percentage, the raw materials for preparing the modified hydroxyacrylic acid aqueous dispersion include:

[0065] Methyl methacrylate, 32wt%;

[0066]Isooctyl acrylate, 15wt%;

[0067] Acrylic acid, 4.65wt%;

[0068] Polyethylene oxide, 0.85wt%;

[0069] N,N-Dimethylethanolamine, 7.5wt%;

[0070] Organic solvent, 4wt%;

[0071] Deionized water, 30wt%;

[0072] Initiator, 4wt%;

[0073] Chain transfer agent, 2 wt%.

[0074] Among them, the molecular weight of polyethylene oxide is 8×10 5 , the organic solvent is a 2:1 mixed solvent of ethylene glycol monobutyl ether and 100# solvent naphtha, the initiator is di-tert-amyl peroxide, and the chain transfer agent is dodecyl mercaptan.

[0075] The specific steps for preparing the above-mentioned modified hydroxyacrylic acid aqueous dispersion with matte effect are as follows:

[0076] Step 1: Dissolve polyethylene oxide in an org...

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Abstract

The invention discloses a modified hydroxy acrylic acid aqueous dispersion with a honed effect and a preparation method thereof. The modified hydroxy acrylic acid aqueous dispersion is prepared from the following raw materials by weight percent: 20-35wt% of methyl methacrylate, 5-15wt% of isooctyl oleate, 3.1-6.2wt% of acrylic acid, 0.1-1wt% of polyethylene oxide, 5-10wt% of N,N-dimethylethanolamine, 3-5wt% of an organic solvent, 30-50wt% of deionized water, 2-4wt% of initiator and 1-2wt% of chain transfer agent. The preparation method comprises the following steps: polymerizing solution under the existence of polyethylene oxide, thereby preparing a hydroxy acrylic resin; adding N,N-dimethylethanolamine and adding water for diluting, thereby acquiring the modified hydroxy acrylic acid aqueous dispersion. After a curing agent is added for curing the product prepared according to the invention into a film, the polymer for forming the coating is crystal state and amorphous state coexisting system and the transparency of the coating is greatly reduced, so that the extinction effect is achieved and the modified hydroxy acrylic acid aqueous dispersion can be used as a honed finishing coat.

Description

technical field [0001] The invention relates to a water-based resin, in particular to a modified hydroxyacrylic acid aqueous dispersion with a matt effect and a preparation method thereof. Background technique [0002] Paints or paints of various colors are divided into matte and bright. It is mainly distinguished according to the difference in gloss. Among them, the matt paint is mainly varnish, and its surface is a little hairy, like the surface of frosted glass. The reflected light is "diffuse reflection", without glare and glare, giving people a sense of stability and elegance. The preparation of matt paint is generally made by adding an appropriate amount of matting agent and auxiliary materials. Due to the different amount of matting agent, the glossiness of the paint film is also different. The matt paint film has soft gloss, even thinness, smoothness, temperature resistance, water resistance, acid and alkali resistance. [0003] The traditional matt paint prepara...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F283/06C08F220/14C08F220/18C08F220/06C08F2/10C09D151/08
CPCC08F2/10C08F283/06C09D151/08C08F220/1808
Inventor 李为立徐泽孝
Owner SUZHOU JIREN HIGH TECH MATERIAL CO LTD
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