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Coating mildew-proof agent and preparation method thereof

A technology of antifungal agents and coatings, which is applied in the direction of antifouling/underwater coatings, paints containing biocides, etc., can solve the problems of poor antifungal effect of coatings, high toxicity, unreasonable selection of antifungal agent raw materials, etc., and achieve a solution Effects of spoilage, skin mildness without irritation, increased risk of mold

Inactive Publication Date: 2018-04-20
广州广微环境科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Antifungal agents for coatings are a type of preparation that inhibits paint-causing microorganisms and prevents paint from demulsifying and deteriorating. Traditional antifungal agents have unreasonable selection of raw materials, high toxicity, and relatively poor antifungal effects on coatings.

Method used

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  • Coating mildew-proof agent and preparation method thereof
  • Coating mildew-proof agent and preparation method thereof
  • Coating mildew-proof agent and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] The embodiment of the present invention provides a kind of preparation method of paint antifungal agent, comprises the following steps:

[0045] (1) Take the following raw materials in weight percentage: zinc pyrithione 25%, dichlorooctylisothiazolinone 5%, alkyl dimethyl benzyl ammonium chloride 0.2%, emulsified silicone oil 0.1%, hydroxyethyl Cellulose 1.5%, zinc powder 0.4%, water 67.8%.

[0046] (2) Grind zinc pyrithione to a fineness of no more than 2 μm; add water to a high-speed disperser, and then add zinc pyrithione grinding powder, dichlorooctylisothiazolinone, alkyldimethylbenzyl Ammonium chloride, emulsified silicone oil, hydroxyethyl cellulose, zinc powder, disperse at high speed for 30 minutes; reduce speed, defoam; test quality, measure, and pack.

Embodiment 2

[0048] The embodiment of the present invention provides a kind of preparation method of paint antifungal agent, comprises the following steps:

[0049] (1) Take the following raw materials in weight percentage: zinc pyrithione 50%, dichlorooctylisothiazolinone 10%, alkyl dimethyl benzyl ammonium chloride 0.6%, emulsified silicone oil 0.3%, hydroxyethyl Cellulose 2%, zinc powder 0.5%, 36.6% water.

[0050] (2) Grind zinc pyrithione to a fineness of no more than 2 μm; add water to a high-speed disperser, and then add zinc pyrithione grinding powder, dichlorooctylisothiazolinone, alkyldimethylbenzyl Ammonium chloride, emulsified silicone oil, hydroxyethyl cellulose, zinc powder, disperse at high speed for 30 minutes; reduce speed, defoam; test quality, measure, and pack.

Embodiment 3

[0052] The embodiment of the present invention provides a kind of preparation method of paint antifungal agent, comprises the following steps:

[0053](1) Take the following raw materials in weight percentage: 40% of zinc pyrithione, 3% of dichlorooctylisothiazolinone, 0.2% of alkyl dimethyl benzyl ammonium chloride, 0.2% of emulsified silicone oil, hydroxyethyl Cellulose 1.5%, zinc powder 0.2%, water 54.9%.

[0054] (2) Grind zinc pyrithione to a fineness of no more than 2 μm; add water to a high-speed disperser, and then add zinc pyrithione grinding powder, dichlorooctylisothiazolinone, alkyldimethylbenzyl Ammonium chloride, emulsified silicone oil, hydroxyethyl cellulose, zinc powder, disperse at high speed for 30 minutes; reduce speed, defoam; test quality, measure, and pack.

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Abstract

The invention discloses a coating mildew-proof agent and a preparation method thereof. The mildew-proof agent provided by the invention includes the following raw materials in percentages by weight: 25-50% of a pyrithione salt, 3%-10% of 4,5-dichloro-2-n-octyl-3-isothiazolone, 0.2%-0.6% of a dispersant, 0.02%-0.3% of a defoaming agent, 1%-2% of a consistence modifier, 0.2%-0.5% of an antioxidant,and 40-70% of a solvent; and the fineness of the pyrithione salt is not more than 2[mu]m. The coating mildew-proof agent provided by the invention is a safe, non-toxic high-efficiency and broad-spectrum coating mildew-proof agent with mildness and no irritating to skins, can be widely applied to a coating, and has good compatibility with the coating, and no effects on a plurality of properties such as color, viscosity, levelling performance and stability when the adding amount is proper; the mildew-proof agent provided by the invention can be directly added into the coating when being used, the general recommended usage amount is 0.2%-1%, and the mildew resistant level is 0; and the mildew-proof agent has obvious killing and resisting effects on moulds such as chaetomium globosum, mucor, penicillium, aspergillus terreus and aspergillus niger.

Description

technical field [0001] The invention relates to the technical field of mold prevention, in particular to a paint mold inhibitor and a preparation method thereof. Background technique [0002] Coating is a kind of coating that can be applied on the surface of objects by different construction techniques to form a solid film with strong adhesion, certain strength and continuity, also known as paint film or coating. Coatings can protect, decorate, conceal product defects and other special functions, and enhance the value of products. For toilets and basements, it is best to choose a paint with better mold resistance. The necessary conditions for mildew are: mold spores, humidity, temperature, nutrition, mold spores are inevitable in the environment, and the suitable growth temperature of most molds is 25-30°C, all these conditions can be met. In addition to affecting the appearance, mold can also damage the paint film, causing cracking and peeling, which seriously damages the...

Claims

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Application Information

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IPC IPC(8): C09D5/14
CPCC09D5/14
Inventor 喻倩
Owner 广州广微环境科技有限公司
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