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High-barrier and high-water-resistance water-based acrylic emulsion and preparation method thereof

A water-based acrylic, high-barrier technology, applied in coatings and other directions, can solve the problems of poor water resistance of emulsion film formation, affecting aesthetics, and being unacceptable to the market.

Pending Publication Date: 2022-05-10
HAINAN BNK WATER BASED NEW MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] There are many treatment methods for formaldehyde in the market, but most of them have little effect or cannot be used for a long time. For the coatings applied to exterior walls and new furniture, most of them cannot be used because they are not completely water-based environmental protection coatings or the emulsion itself has a strong pungent smell. Accepted by the market
Water-based acrylic emulsion is an environment-friendly coating. Its film

Method used

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  • High-barrier and high-water-resistance water-based acrylic emulsion and preparation method thereof
  • High-barrier and high-water-resistance water-based acrylic emulsion and preparation method thereof
  • High-barrier and high-water-resistance water-based acrylic emulsion and preparation method thereof

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preparation example Construction

[0039] The application also provides a preparation method for the aqueous acrylic emulsion, comprising the following steps:

[0040] a) According to the proportion, mix 95wt% of the total amount of methyl methacrylate, methyl acrylate, methacrylic acid and N-aminoacrylamide, and then add 70wt% of the total amount of compound emulsifier to obtain the first mixed solution ; Mix 20wt% of the total amount of soft water and 60wt% of the total amount of initiator to obtain the second mixed solution;

[0041] b) mixing the remaining soft water, methyl methacrylate, compound emulsifier, initiator and pH regulator, and reacting to obtain a reaction solution;

[0042] c) mixing the first mixed solution, the second mixed solution and the reaction solution, and reacting;

[0043] d) The reaction solution obtained in step c) is mixed with the defoamer, then vacuumized, and then an antiseptic, a wetting agent and a film-forming agent are added to obtain a water-based acrylic emulsion.

[00...

Embodiment 1

[0051] A water-based acrylic emulsion with high barrier and high water resistance, which is prepared from the following raw materials by weight: 10% acrylate mixture, 1% film forming agent, 0.5% wetting agent, 1% compound emulsifier, defoamer 0.2%, preservative 0.1%, initiator 0.1%, pH regulator 0.1%, soft water 87%; acrylate mixture consists of methyl methacrylate, ethyl methacrylate, methyl acrylate, ethyl acrylate, methacrylic acid , N-aminoacrylamide mixed, wherein the mixing ratio of methyl acrylate and methyl methacrylate is 1:1; the compound emulsifier is a compound of reactive emulsifier SR-10 and sodium lauryl sulfate , the compounding ratio is 10:1; the film forming agent is triethylene glycol diisocaprylate; the wetting agent is macromolecular polyether modified polyester; the defoaming agent is mineral oil; the preservative is sodium benzoate; The pH regulator is sodium bicarbonate; the initiator is potassium persulfate.

[0052] A method for preparing a high-barr...

Embodiment 2

[0059] A water-based acrylic emulsion with high barrier and high water resistance, which is prepared from the following raw materials by weight: acrylate mixture 50%, film forming agent 9%, wetting agent 2%, compound emulsifier 3%, defoamer 0.3%, preservative 0.3%, initiator 0.3%, pH regulator 0.1%, soft water 35%; acrylate mixture consists of methyl methacrylate, ethyl methacrylate, methyl acrylate, ethyl acrylate, methacrylic acid , N-aminoacrylamide mixed, wherein the mixing ratio of methyl acrylate and methyl methacrylate is 1:5; the compound emulsifier is a compound of reactive emulsifier SR-10 and sodium lauryl sulfate , the compounding ratio is 10:4; the film forming agent is triethylene glycol diisocaprylate; the wetting agent is macromolecular polyether modified polyester; the defoaming agent is a mixture of mineral oil and silicone; The preservative is Cathone; the pH regulator is sodium bicarbonate; the initiator is potassium persulfate.

[0060] A method for prepa...

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Abstract

The invention provides a water-based acrylic emulsion with high barrier and high water resistance. The water-based acrylic emulsion is prepared from the following components in percentage by weight: 10 to 50 percent of acrylate mixture, 1 to 10 percent of film-forming agent, 0.5 to 2 percent of wetting agent, 1 to 3 percent of compound emulsifier, 0.2 to 0.5 percent of defoaming agent, 0.1 to 0.3 percent of preservative, 0.1 to 0.3 percent of initiator, 0.1 to 0.2 percent of pH (Potential of Hydrogen) regulator and 35 to 87 percent of soft water. The water-based acrylic emulsion disclosed by the invention has good barrier property on formaldehyde, can effectively reduce the release amount of formaldehyde, has excellent water resistance, and can be widely applied to exterior wall coatings and wooden furniture coatings; the emulsion is a pure water-based material, is environment-friendly and non-toxic and has no pungent smell, and the coating is transparent and high in gloss.

Description

technical field [0001] The invention relates to the technical field of coatings, in particular to a water-based acrylic emulsion with high barrier and high water resistance and a preparation method thereof. Background technique [0002] Formaldehyde is one of the main pollutants in indoor air. Newly renovated houses and new furniture are often accompanied by the release of formaldehyde. Its release is a long-term process. Free formaldehyde in the air will cause great harm to human health and the environment. . [0003] There are many treatment methods for formaldehyde in the market, but most of them have little effect or cannot be used for a long time. For the coatings applied to exterior walls and new furniture, most of them cannot be used because they are not completely water-based environmental protection coatings or the emulsion itself has a strong pungent smell. accepted by the market. Water-based acrylic emulsion is an environment-friendly coating. Its film-forming i...

Claims

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Application Information

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IPC IPC(8): C08F220/14C08F220/18C08F220/06C08F220/60C08F2/24C08F2/26C09D133/12C09D7/63C09D7/65
CPCC08F220/14C08F2/24C08F2/26C09D133/24C09D7/63C09D7/65C08L2205/03C08F220/1802C08F220/06C08F220/60C08L91/06C08K5/103C08K5/098C08F220/18C09D133/12C08F220/16C08F220/04C09D133/00
Inventor 朱清梅黄宏存陈新生
Owner HAINAN BNK WATER BASED NEW MATERIAL CO LTD
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