Sand-in-water coating as well as preparation method and application thereof

Abstract

The invention belongs to the technical field of coatings, and particularly relates to a sand-in-water coating as well as a preparation method and application thereof. The sand-in-water coating comprises a component A, a component B and a component C, the component A comprises an emulsion 1, protective glue, a filler, cellulose and an auxiliary agent; the component B comprises protective glue, a filler and an auxiliary agent; the component C comprises an emulsion 2 and an auxiliary agent; the emulsion 1 comprises an acrylic emulsion; and the emulsion 2 comprises the following raw material components: styrene, butyl acrylate, acrylic acid, silicate and titanium dioxide. Titanium dioxide and silicate are introduced into the emulsion 2 to serve as modified monomers, the hydrophobicity of the emulsion is improved through titanium dioxide, the viscosity of the emulsion is improved through silicate, and therefore the use amount of a thickening agent containing hydrophilic groups in the coating is reduced, the hydrophilic performance of the coating can be fully reduced through combined use of titanium dioxide and silicate, and the service life of the coating is prolonged. And other components are combined to act together, so that the water whitening resistance of the coating can be well improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of coatings, and particularly relates to a water-in-sand coating, a preparation method thereof, and an application thereof. Background Art

[0002] With the improvement of people's living standards, the requirements for the wall decoration effect are also getting higher and higher. In the field of architectural coatings, efforts have been made to develop related products imitating natural stones, such as real stone paints, flake paints, etc. The existing real stone paints and flake paints can imitate the marble effect, but they can no longer meet people's requirements for the decoration effect.

[0003] The colorful coating integrates patterns and textures. After spraying, it forms a single pattern in one shot, and the patterns blend with each other, making the texture effect of the litchi surface more prominent and orderly. At the same time, compared with marble, the colorful coating has a lighter self-weight and a smaller load on the wall. Since the 1990s, the colorful coating has been popularized in China. It has gradually won the favor of the market with its high stone simulation degree, high environmental friendliness, and specific functionality. However, the colorful coating has problems such as poor stability, poor water whitening resistance, and high construction difficulty. Entering the 21st century, with the development of synthetic resin technology and waterborne coating additive technology, the application of the colorful coating has gradually occupied more markets, but its water whitening resistance has still not been well solved and needs to be further improved.

[0004] Therefore, it is of great significance to provide a coating with good water whitening resistance. Summary of the Invention

[0005] The present invention aims to solve one or more of the above-mentioned technical problems existing in the prior art and at least provides a beneficial option. Specifically, the present invention provides a water-in-sand coating with good water whitening resistance.

[0006] The inventive concept of the present invention: The coating of the present invention includes component A, component B, and component C; component A includes emulsion 1, protective colloid, filler, cellulose, and additives; component B includes protective colloid, filler, and additives; component C includes emulsion 2 and additives; emulsion 1 includes acrylic emulsion; the raw material components of emulsion 2 include styrene, butyl acrylate, acrylic acid, silicate, and titanium dioxide. Emulsion 2 of the present invention is formed by three monomers of styrene, butyl acrylate, and acrylic acid, and titanium dioxide and silicate are introduced as modified monomers. The hydrophobicity of the emulsion is improved by titanium dioxide, and the viscosity of the emulsion is increased by silicate, thereby reducing the dosage of the thickener containing hydrophilic groups in the coating. The combined use of titanium dioxide and silicate can fully reduce the hydrophilic property of the coating, and combined with the common action of other components, the purpose of improving the water whitening resistance of the coating is achieved.

[0007] Therefore, in the first aspect of the present invention, a water-in-sand coating is provided.

[0008] Specifically, the coating for water-in-sand comprises component A, component B and component C;

[0009] Component A comprises emulsion 1, protective colloid, filler, cellulose and additives;

[0010] Component B comprises protective colloid, filler and additives;

[0011] Component C comprises emulsion 2 and additives;

[0012] Emulsion 1 comprises acrylic emulsion;

[0013] The raw material components of emulsion 2 include styrene, butyl acrylate, acrylic acid, silicate and titanium dioxide.

[0014] Specifically, an emulsion is a colloidal substance in which the dispersed solid phase (polymer particles) is suspended in the continuous phase (water). In the liquid state, due to light scattering by the emulsion through various media, it appears white or translucent. Generally, when the latex particles dry to form a continuous transparent film, the liquid water evaporates, and the ionic charge and water-soluble components (such as surfactants, initiators, buffers, etc.) still remain in the gap region of the coating film. Since these components are more hydrophilic than the latex particles, they easily absorb water, becoming the driving force for water to migrate to the gap region. This migration will cause the latex film to appear "water white", making the water resistance of the coating poor. In the emulsion 2 of component C of the present invention, titanium dioxide and silicate are introduced as modified monomers. The hydrophobicity of the emulsion is improved by titanium dioxide, and the viscosity of the emulsion is increased by silicate, thereby reducing the dosage of the thickener containing hydrophilic groups in the coating. The combined use of titanium dioxide and silicate can fully reduce the hydrophilic performance of the coating, achieving the purpose of improving the water resistance of the coating.

[0015] Preferably, the raw material components of emulsion 2 further include at least one of water, surfactant, redox agent and pH regulator.

[0016] Preferably, the raw material components of emulsion 2 include water, surfactant, redox agent and pH regulator; and by mass, the raw material components of emulsion 2 include 45 - 60 parts of water, 3 - 5 parts of surfactant, 25 - 35 parts of styrene, 8 - 12 parts of butyl acrylate, 0.5 - 2 parts of acrylic acid, 0.5 - 1 part of redox agent, 0.5 - 1 part of pH regulator, 0.8 - 3.6 parts of titanium dioxide, and 0.1 - 2 parts of silicate.

[0017] Further preferably, by mass parts, the raw material components of the emulsion 2 include 45-55 parts of water, 3-5 parts of surfactant, 25-35 parts of styrene, 8-12 parts of butyl acrylate, 0.5-2 parts of acrylic acid, 0.5-1 part of redox agent, 0.5-1 part of pH regulator, 2.0-2.5 parts of titanium dioxide, and 0.8-1.2 parts of silicate.

[0018] Even further preferably, by mass parts, the raw material components of the emulsion 2 include 52 parts of water, 3 parts of surfactant, 30 parts of styrene, 10 parts of butyl acrylate, 0.9 part of acrylic acid, 0.5 part of redox agent, 0.5 part of pH regulator, 2.2 parts of titanium dioxide, and 0.9 part of silicate.

[0019] Preferably, the silicate includes framework silicate.

[0020] Further preferably, the framework silicate includes quartz (SiO 2 ), plagioclase (NaAlSi 3 O 8 ) or at least one of them.

[0021] Preferably, the surfactant includes anionic surfactant; further preferably, the anionic surfactant includes sodium dodecylbenzenesulfonate.

[0022] Preferably, the redox agent includes sodium persulfate.

[0023] Preferably, the pH regulator includes ammonia water.

[0024] Preferably, the additives in the component A include at least one of dispersant, defoamer, amine additive, bactericide and preservative, film-forming aid, and antifreeze.

[0025] Preferably, the additives in the component B include bactericide and preservative.

[0026] Preferably, the additives in the component C include at least one of bactericide and preservative, antifreeze, film-forming aid, pH regulator, defoamer, and thickener.

[0027] Preferably, the component A further includes water.

[0028] Preferably, the component B further includes color paste.

[0029] Preferably, the component C further includes water.

[0030] Preferably, the additives in Component A include a dispersant, an antifoaming agent, an amine additive, a bactericide and preservative, a film-forming aid, and an antifreeze; the additives in Component B include a bactericide and preservative; the additives in Component C include a bactericide and preservative, an antifreeze, a film-forming aid, an amine additive, an antifoaming agent, and a thickener; Component A further includes water; Component B further includes a color paste; Component C further includes water; and by mass parts, Component A includes 18 - 60 parts of water, 0.1 - 0.5 part of a dispersant, 0.1 - 0.4 part of an antifoaming agent, 5 - 15 parts of a filler, 4.0 - 10 parts of calcined kaolin, 0.5 - 1.0 part of cellulose, 0.1 - 0.3 part of an amine additive, 0.1 - 0.5 part of a bactericide and preservative, 15 - 30 parts of Emulsion 1, 0.5 - 1.5 parts of a film-forming aid, 0.5 - 1.5 parts of an antifreeze, and 5 - 10 parts of a protective colloid;

[0031] Component B includes 78 - 85 parts of a filler, 10 - 20 parts of a protective colloid, 0.1 - 0.3 part of a bactericide and preservative, and 0.1 - 1 part of a color paste;

[0032] Component C includes 40 - 60 parts of water, 0.1 - 0.5 part of a bactericide and preservative, 1.5 - 3 parts of an antifreeze, 2 - 4 parts of a film-forming aid, 30 - 60 parts of Emulsion 2, 0.1 - 0.3 part of a pH regulator, 0.1 - 0.4 part of an antifoaming agent, and 0.1 - 0.8 part of a thickener.

[0033] More preferably, by mass parts, Component A includes 48 parts of water, 0.3 part of a dispersant, 0.3 part of an antifoaming agent, 5 parts of titanium dioxide, 8 parts of calcined kaolin, 0.6 part of cellulose, 0.1 part of an amine additive, 0.3 part of a bactericide and preservative, 28 parts of Emulsion 1, 1.4 parts of a film-forming aid, 1 part of an antifreeze, and 7 parts of a protective colloid;

[0034] Component B includes 79 parts of a filler, 20 parts of a protective colloid, 0.2 part of a bactericide and preservative, and 0.8 part of a color paste;

[0035] Component C includes 60 parts of water, 0.3 part of a bactericide and preservative, 2 parts of an antifreeze, 3 parts of a film-forming aid, 34 parts of Emulsion 2, 0.2 part of a pH regulator, 0.4 part of an antifoaming agent, and 0.3 part of a thickener.

[0036] Preferably, the filler in Component A includes at least one of titanium dioxide and calcined kaolin.

[0037] Preferably, the filler in Component B includes sand.

[0038] Preferably, the antifoaming agent includes hydroxy polyethylene oxide.

[0039] Preferably, the amine additive includes AMP - 95, which is a multifunctional additive.

[0040] Preferably, the bactericidal and preservative agent includes isothiazolinone.

[0041] Preferably, the film-forming auxiliary agent includes dodecyl alcohol ester.

[0042] Preferably, the antifreezing agent includes propylene glycol.

[0043] Preferably, the thickening agent includes acrylic polymer.

[0044] Preferably, the pH regulator in the C component includes ammonia water.

[0045] The second aspect of the present invention provides a preparation method of the water-in-sand paint described in the first aspect of the present invention.

[0046] Specifically, the preparation method of the paint includes the following steps:

[0047] Mix each raw material component to obtain the water-in-sand paint.

[0048] The third aspect of the present invention provides an application of the paint described in the first aspect of the present invention in the construction field.

[0049] Compared with the prior art, the beneficial effects of the technical solution provided by the present invention are as follows:

[0050] (1) In the emulsion 2 of the present invention, by introducing titanium dioxide and silicate as modified monomers, the hydrophobicity of the emulsion is improved by titanium dioxide, and the viscosity of the emulsion is increased by silicate, thereby reducing the dosage of the thickening agent containing hydrophilic groups in the paint. The combined use of titanium dioxide and silicate can fully reduce the hydrophilic performance of the paint, and combined with the co-action of other components, the purpose of improving the water whitening resistance of the paint is achieved.

[0051] (2) The preparation process of the present invention is simple and convenient for industrial popularization and application. Specific Embodiments

[0052] In order to make those skilled in the art more clearly understand the technical solution described in the present invention, the following examples are listed for illustration. It should be noted that the following examples do not limit the protection scope required by the present invention.

[0053] In the following examples, the raw materials, reagents or devices used can be obtained from conventional commercial channels or can be obtained by existing known methods without special instructions.

[0054] Example 1

[0055] A water-in-sand paint is composed of component A, component B, and component C;

[0056] Component A consists of the following raw material components by mass fraction: 48 parts of deionized water, 0.3 part of polycarboxylic acid amine salt dispersant, 0.3 part of defoamer hydroxyl poly(ethylene oxide), 5 parts of titanium dioxide, 8 parts of calcined kaolin, 0.6 part of cellulose, 0.1 part of amine auxiliary AMP-95, 0.3 part of bactericidal and preservative isothiazolinone, 128 parts of acrylic emulsion, 1.4 parts of film-forming auxiliary dodecyl alcohol ester, 1 part of antifreeze propylene glycol, 7 parts of NPAD032 protective colloid (Zhejiang Huate New Materials);

[0057] Component B consists of the following raw material components by mass fraction: 79 parts of white sand, 20 parts of NPAD032 protective colloid (Zhejiang Huate New Materials), 0.2 part of bactericidal and preservative, 0.8 part of color paste;

[0058] Component C consists of the following raw material components by mass fraction: 60 parts of deionized water, 0.3 part of bactericidal and preservative, 2 parts of antifreeze propylene glycol, 3 parts of film-forming auxiliary dodecyl alcohol ester, 34 parts of water-resistant white emulsion, 0.2 part of amine auxiliary AMP-95, 0.4 part of defoamer hydroxyl poly(ethylene oxide), 0.3 part of polyacrylate thickener.

[0059] Among them, the water-resistant white emulsion in Component C consists of the following raw material components by mass fraction:

[0060] 53 parts of deionized water, 3 parts of sodium dodecylbenzenesulfonate, 30 parts of styrene, 10 parts of butyl acrylate, 1 part of acrylic acid, 0.8 part of sodium persulfate, 0.8 part of ammonia water, 1 part of titanium dioxide, 0.4 part of quartz.

[0061] The preparation method of the water-in-sand coating comprises the following steps:

[0062] Add Component B into a dispersion tank, then add Component A, start a stirrer, shear and granulate, stop the machine after reaching the required color dot particle size; then add Component C, and stir evenly with a multicolor coating mixing device to obtain the water-in-sand coating.

[0063] Among them, the preparation method of the water-resistant white emulsion is to mix the raw material components to obtain it.

[0064] Example 2

[0065] The difference between Example 2 and Example 1 is only that in Component C of Example 2, the water-resistant white emulsion consists of the following raw material components by mass fraction: 52 parts of deionized water, 3 parts of sodium dodecylbenzenesulfonate, 30 parts of styrene, 10 parts of butyl acrylate, 1 part of acrylic acid, 0.8 part of sodium persulfate, 0.8 part of ammonia water, 2 parts of titanium dioxide, 0.4 part of quartz; the others are the same as in Example 1.

[0066] Example 3

[0067] The difference between Example 3 and Example 1 is only that in the C component of Example 3, the water-resistant white emulsion consists of the following raw material components in parts by mass: deionized water 51.2 parts, sodium dodecylbenzenesulfonate 3 parts, styrene 30 parts, butyl acrylate 10 parts, acrylic acid 1 part, sodium persulfate 0.8 parts, ammonia water 0.8 parts, titanium dioxide 3 parts, quartz 0.4 parts; others are the same as in Example 1.

[0068] Example 4

[0069] The difference between Example 4 and Example 1 is only that in the C component of Example 4, the water-resistant white emulsion consists of the following raw material components in parts by mass: deionized water 52.7 parts, sodium dodecylbenzenesulfonate 3 parts, styrene 30 parts, butyl acrylate 10 parts, acrylic acid 0.9 part, sodium persulfate 0.5 parts, ammonia water 0.5 parts, titanium dioxide 1.5 parts, quartz 0.9 parts; others are the same as in Example 1.

[0070] Example 5

[0071] The difference between Example 5 and Example 4 is only that in the C component of Example 5, the water-resistant white emulsion consists of the following raw material components in parts by mass: deionized water 51.8 parts, sodium dodecylbenzenesulfonate 3 parts, styrene 30 parts, butyl acrylate 10 parts, acrylic acid 0.9 part, sodium persulfate 0.5 parts, ammonia water 0.5 parts, titanium dioxide 1.5 parts, quartz 1.8 parts; others are the same as in Example 4.

[0072] Example 6

[0073] The difference between Example 6 and Example 4 is only that in the C component of Example 6, the water-resistant white emulsion consists of the following raw material components in parts by mass: deionized water 52 parts, sodium dodecylbenzenesulfonate 3 parts, styrene 30 parts, butyl acrylate 10 parts, acrylic acid 0.9 part, sodium persulfate 0.5 parts, ammonia water 0.5 parts, titanium dioxide 2.2 parts, quartz 0.9 parts; others are the same as in Example 4.

[0074] Example 7

[0075] The difference between Example 7 and Example 4 is only that in the C component of Example 7, the water-resistant white emulsion consists of the following raw material components in parts by mass: deionized water 51.1 parts, sodium dodecylbenzenesulfonate 3 parts, styrene 30 parts, butyl acrylate 10 parts, acrylic acid 0.9 part, sodium persulfate 0.5 parts, ammonia water 0.5 parts, titanium dioxide 2.2 parts, quartz 1.8 parts; others are the same as in Example 4.

[0076] Example 8

[0077] Example 8 differs from Example 4 only in that in Component C of Example 8, the water-resistant white emulsion consists of the following raw material components in parts by mass: 51.4 parts of deionized water, 3 parts of sodium dodecylbenzenesulfonate, 30 parts of styrene, 10 parts of butyl acrylate, 0.9 part of acrylic acid, 0.5 part of sodium persulfate, 0.5 part of ammonia water, 2.8 parts of titanium dioxide, and 0.9 part of quartz; other aspects are the same as in Example 4.

[0078] Example 9

[0079] Example 9 differs from Example 4 only in that in Component C of Example 9, the water-resistant white emulsion consists of the following raw material components in parts by mass: 50.5 parts of deionized water, 3 parts of sodium dodecylbenzenesulfonate, 30 parts of styrene, 10 parts of butyl acrylate, 0.9 part of acrylic acid, 0.5 part of sodium persulfate, 0.5 part of ammonia water, 2.8 parts of titanium dioxide, and 1.8 parts of plagioclase (NaAlSi 3 O 8 )1.8 parts; other aspects are the same as in Example 4.

[0080] Comparative Example 1

[0081] The difference between Comparative Example 1 and Example 1 is only that Comparative Example 1 does not contain silicate, and other aspects are the same as in Example 1.

[0082] Comparative Example 2

[0083] The difference between Comparative Example 2 and Example 2 is that Comparative Example 2 does not contain silicate, and other aspects are the same as in Example 2.

[0084] Comparative Example 3

[0085] The difference between Comparative Example 3 and Example 3 is that Comparative Example 3 does not contain titanium dioxide, and other aspects are the same as in Example 3.

[0086] Comparative Example 4

[0087] The difference between Comparative Example 4 and Example 1 is only that the water-resistant white emulsion in Component C of Comparative Example 4 uses the water-resistant white emulsion in the prior art, which consists of deionized water, sodium dodecylbenzenesulfonate, styrene, butyl acrylate, acrylic acid, sodium persulfate, and ammonia water, and other aspects are the same as in Example 1.

[0088] Performance Test

[0089] The performance of the water-in-sand coatings of Examples 1-9 and Comparative Examples 1-4 was tested, and the test items and test methods are as follows:

[0090] The state in the container, alkali resistance, state of colored particles, drying time (surface dry), heat storage stability, water whitening resistance (rated from 1 to 5, the worse the water whitening resistance, the lower the score), and three freeze-thaw cycles were all tested in accordance with HG / T 4343-2012 and GB / T9779-2015.

[0091] The performance test results of the coatings in Examples 1-9 are shown in Table 1, and the performance test results of the coatings in Comparative Examples 1-4 are shown in Table 2.

[0092] Table 1: Performance test results of the coatings in Examples 1-9

[0093]

[0094] Table 2: Performance test results of the coatings in Comparative Examples 1-4

[0095]

[0096]

[0097] It can be seen from Table 1 that the coating of the present invention has good water whitening resistance, and at the same time has good alkali resistance, heat storage stability, and freeze-thaw resistance, and can well meet the requirements for water whitening in the construction field.

[0098] Comparative Examples 1-2 do not contain silicate, and Comparative Example 3 does not contain titanium dioxide. As a result, the water whitening resistance of Comparative Examples 1-3 is worse than that of Example 1, Example 2, and Example 3 respectively, and the heat storage stability of Comparative Examples 1-2 is worse than that of Example 1 and Example 2 respectively. Comparative Example 4 uses a water whitening emulsion in the prior art, making the water whitening resistance and heat storage stability of Comparative Example 4 significantly worse than that of Example 1. It shows that only by using the specific water whitening emulsion of the present invention can the coating have good water whitening performance and heat storage stability.

[0099] In summary, the present invention introduces titanium dioxide and silicate as modified monomers into the water whitening emulsion. The hydrophobicity of the emulsion is improved by titanium dioxide, and the viscosity of the emulsion is increased by silicate, thereby reducing the dosage of the thickener containing hydrophilic groups in the coating. The combined use of titanium dioxide and silicate can fully reduce the hydrophilicity of the coating, and combined with the joint action of other components, the water whitening performance of the coating can be well improved.

[0100] The above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit the protection scope of the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the essence and scope of the technical solutions of the present invention.

Claims

1. A coating, characterized in that: It includes component A, component B and component C; The component A comprises emulsion 1, protective glue, filler, cellulose and additives; The B component includes protective glue, filler and additives; The C component includes emulsion 2 and an auxiliary agent; The emulsion 1 comprises an acrylic emulsion; The raw material components of the emulsion 2 include styrene, butyl acrylate, acrylic acid, silicate and titanium dioxide.

2. The coating according to claim 1, characterized in that The raw material components of the emulsion 2 also include at least one of water, a surfactant, a redox agent, and a pH adjuster.

3. The coating according to claim 2, characterized in that The raw material components of the emulsion 2 include water, a surfactant, a redox agent and a pH adjuster; and by mass, the raw material components of the emulsion 2 include 45-60 parts of water, 3-5 parts of a surfactant, 25-35 parts of styrene, 8-12 parts of butyl acrylate, 0.5-2 parts of acrylic acid, 0.5-1 parts of a redox agent, 0.5-1 parts of a pH adjuster, 0.8-3.6 parts of titanium dioxide, and 0.1-2 parts of a silicate.

4. The coating according to claim 3, characterized in that The silicate comprises a framework silicate; and / or the surfactant comprises an anionic surfactant; and / or the redox agent comprises sodium persulfate; and / or the pH adjuster comprises aqueous ammonia.

5. The coating according to claim 1, characterized in that The auxiliary agent in the A component includes at least one of a dispersant, a defoamer, an amine auxiliary agent, a bactericide and preservative, a film-forming auxiliary agent, and an antifreeze agent; and / or, the auxiliary agent in the B component includes a bactericide and preservative; and / or, the auxiliary agent in the C component includes at least one of a bactericide and preservative, an antifreeze agent, a film-forming auxiliary agent, a pH regulator, a defoamer, and a thickener; and / or, the A component also includes water; and / or, the B component also includes a color paste; and / or, the C component also includes water.

6. The coating according to claim 5, characterized in that The auxiliary agents in the A component include dispersants, defoamers, amine auxiliary agents, bactericides and preservatives, film-forming auxiliary agents and antifreeze agents; the auxiliary agents in the B component include bactericides and preservatives; The auxiliary agents in the C component include bactericides and preservatives, antifreeze agents, film-forming aids, pH regulators, defoamers and thickeners; the A component also includes water; the B component also includes color paste; and the C component also includes water. And by weight, the component A includes 18-60 parts of water, 0.1-0.5 parts of dispersant, 0.1-0.4 parts of defoamer, 5-15 parts of filler, 0.5-1.0 parts of cellulose, 0.1-0.3 parts of amine auxiliary, 0.1-0.5 parts of bactericidal preservative, 15-30 parts of emulsion 1, 0.5-1.5 parts of film-forming auxiliary, 0.5-1.5 parts of antifreeze agent, and 5-10 parts of protective glue; The B component includes 78-85 parts of filler, 10-20 parts of protective glue, 0.1-0.3 parts of bactericidal preservative, and 0.1-1 parts of color paste; The C component includes 40-60 parts of water, 0.1-0.5 parts of bactericidal preservative, 1.5-3.0 parts of antifreeze agent, 2.0-4.0 parts of film-forming aid, 30-60 parts of emulsion 2, 0.1-0.3 parts of pH regulator, 0.1-0.4 parts of defoaming agent and 0.1-0.8 parts of thickener.

7. The coating according to any one of claims 1 to 6, characterized in that The filler in the A component includes at least one of titanium dioxide and calcined kaolin; and / or the filler in the B component includes sand.

8. The coating according to claim 5, characterized in that The defoaming agent includes hydroxypolyethylene oxide; and / or, the bactericidal preservative includes isothiazolinone; and / or, the film-forming aid includes dodecyl alcohol ester; and / or, the antifreeze agent includes propylene glycol; and / or, the thickener includes acrylic polymer.

9. The method for preparing the coating according to any one of claims 1 to 8, characterized in that: The following steps are involved: The various components are mixed to prepare the coating.

10. Use of the coating according to any one of claims 1 to 8 in the field of construction.

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