Water-based multi-color coating and its preparation method and application

Abstract

The present invention provides a water-based multi-color coating, a preparation method, and an application thereof, specifically relating to the field of coating technology. The water-based multi-color coating comprises, by weight, 300-500 parts of a base material, 200-400 parts of a protective adhesive, and 200-400 parts of a continuous phase; the base material and the continuous phase both contain a non-toxic antibacterial and mildew-proof agent, SMP-AT, with the weight portions of SMP-AT being independently 1-3 parts. The water-based multi-color coating provided by the present invention improves the mildew and corrosion resistance of both dry and wet films of the water-based multi-color coating by introducing the environmentally friendly inorganic antibacterial and mildew-proof agent SMP-AT, while also addressing the viscosity stability of the multi-color coating and improving storage stability. Furthermore, a green, environmentally friendly, and healthy multi-color coating that is formaldehyde-free and extremely low in volatile organic compounds (VOCs) can be prepared.

Description

Technical Field

[0001] The present invention relates to the technical field of coatings, in particular to a water-based multi-color coating and a preparation method and application thereof. Background Art

[0002] Existing multi-color paints mainly use isothiazolinone or formaldehyde-containing bactericidal preservatives. At the same time, isothiazolinone bactericidal preservatives have poor compatibility with the protective glue in the multi-color paint system. At the same time, when the external environment is harsh, the effective content of isothiazolinone bactericidal preservatives decreases, and a larger amount is required to ensure corrosion protection, resulting in a decrease in the viscosity stability of the multi-color paint. When the amount of isothiazolinone bactericidal preservative added is insufficient, it leads to corrosion protection after opening the can, and there are still problems such as mildew resistance of the paint film after spraying.

[0003] Currently, the market has strict restrictions on the content of isothiazolinones and formaldehyde, so it is urgent to reduce the use of isothiazolinones or formaldehyde-containing fungicides and preservatives.

[0004] In view of this, the present invention is proposed. Summary of the Invention

[0005] One of the purposes of the present invention is to provide a water-based multi-color paint, aiming to solve the technical problems in the prior art of large addition of isothiazolinone or formaldehyde-containing bactericidal preservatives, poor antiseptic effect, and affecting the viscosity stability of the multi-color paint.

[0006] A second object of the present invention is to provide a method for preparing a water-based multi-color coating.

[0007] A third object of the present invention is to provide a water-based multi-color paint for use in the fields of architectural decoration and artwork.

[0008] In order to achieve the above-mentioned purpose of the present invention, the following technical solutions are adopted:

[0009] The first aspect of the present invention provides a water-based multi-color coating, which comprises, by weight, 300-500 parts of a base material, 200-400 parts of a protective glue, and 200-400 parts of a continuous phase;

[0010] The base material and the continuous phase both contain the non-toxic antibacterial and mildew-proof agent SMP-AT.

[0011] Furthermore, in the base material and the continuous phase, the weight proportions of SMP-AT are independently 1 part to 3 parts.

[0012] Furthermore, the base material also includes, by weight, 150-230 parts of acrylic emulsion, 150-220 parts of kaolin, 10-20 parts of titanium dioxide, 7-9 parts of methyl cellulose, 10-15 parts of film-forming aid, 10-15 parts of antifreeze, 50-80 parts of protective rubber powder solution, 0.3-0.5 parts of hydrophobically modified associative cellulose, 2-3 parts of dispersant, 400-500 parts of deionized water, 1-3 parts of wetting agent, 2-3 parts of defoaming agent and 1-2 parts of pH regulator.

[0013] Furthermore, the continuous phase also includes 40-70 parts of a micro-reactive silicone acrylic emulsion, 20.0-30.0 parts of deionized water, 2.0-6.0 parts of a film-forming aid, 3.0-8.0 parts of an antifreeze agent, 0.05-0.3 parts of a pH regulator, and 0.5-2.0 parts of a thickener.

[0014] Preferably, the antifreeze comprises an environmentally friendly antifreeze.

[0015] Furthermore, the protective glue comprises 60-100 parts of protective glue powder, 800-1000 parts of deionized water and 3-5 parts of anti-settling agent.

[0016] Preferably, the anti-settling agent comprises a high thixotropic low viscosity anti-settling agent.

[0017] Furthermore, the wetting agent includes an anionic wetting agent.

[0018] Preferably, the defoaming agent comprises an emulsified defoaming agent.

[0019] Preferably, the antifreeze comprises an environmentally friendly antifreeze.

[0020] Furthermore, the film-forming aid includes at least one of lauryl alcohol, ethylene glycol monobutyl ether, diethylene glycol monobutyl ether, ethylene glycol monopropyl ether and propylene glycol monobutyl ether.

[0021] Preferably, the protective rubber powder comprises lithium magnesium silicate.

[0022] The second aspect of the present invention provides a method for preparing the water-based multi-color paint. After the base material is toned, the protective glue is added and granulated using a dispersion disk. After granulation, it is mixed with the continuous phase to obtain a water-based multi-color paint.

[0023] Furthermore, the preparation method of the base material is:

[0024] A wetting agent, a dispersant, SMP-AT, a defoaming agent, titanium dioxide, kaolin, hydrophobically modified associative cellulose and methyl cellulose are added to deionized water in sequence and stirred for 5-10 minutes. A pH regulator is then added and dispersed at 1400-2000 rpm for 30-40 minutes. An antifreeze agent, a film-forming aid and an acrylic emulsion are then added and dispersed at 800-1200 rpm for 10-15 minutes. Finally, a protective rubber powder solution is added, mixed and dispersed at 1000-1500 rpm for 10-15 minutes until uniform dispersion is achieved to obtain the base material.

[0025] The third aspect of the present invention provides the use of the water-based multi-color paint in the fields of building exterior walls, interior wall decoration, special coatings or handicrafts.

[0026] Compared with the prior art, the present invention has at least the following beneficial effects:

[0027] The water-based multi-color paint provided by the present invention improves the mildew and corrosion resistance of the dry and wet films of the water-based multi-color paint by introducing the environmentally friendly inorganic antibacterial and mildew-proof agent SMP-AT. At the same time, it solves the viscosity stability of the multi-color paint, improves storage stability, and can prepare a green, environmentally friendly and healthy multi-color paint that does not contain formaldehyde and has extremely low VOC.

[0028] The preparation method of the water-based multi-color coating provided by the present invention has continuous process, high degree of mechanization, high production efficiency, and is suitable for large-scale industrial production.

[0029] The application of the water-based multi-color paint provided by the present invention in the fields of building exterior walls, interior wall decoration, special coatings or handicrafts improves the durability of the coating and promotes the development of the above fields. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the specific embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0031] Figure 1 This is a photo of the dry film bacterial challenge results in Experimental Example 1. DETAILED DESCRIPTION

[0032] In order to make the objectives, technical solutions and advantages of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0033] Hereinafter, the terms "including", "having" and their cognates, which may be used in various embodiments of the present invention, are intended only to indicate specific features, numbers, steps, operations, elements, components or combinations of the foregoing items, and should not be understood as first excluding the existence of one or more other features, numbers, steps, operations, elements, components or combinations of the foregoing items or the possibility of adding one or more features, numbers, steps, operations, elements, components or combinations of the foregoing items.

[0034] Furthermore, the terms “first,” “second,” “third,” etc., are merely used for distinguishing descriptions and are not to be understood as indicating or implying relative importance.

[0035] The first aspect of the present invention provides a water-based multi-color coating, which comprises, by weight, 300-500 parts of a base material, 200-400 parts of a protective glue, and 200-400 parts of a continuous phase;

[0036] The base material and the continuous phase both contain the non-toxic antibacterial and mildew-proof agent SMP-AT.

[0037] The water-based multi-color paint provided by the present invention improves the mildew and corrosion resistance of the dry and wet films of the water-based multi-color paint by introducing the environmentally friendly inorganic antibacterial and mildew-proof agent SMP-AT. At the same time, it solves the viscosity stability of the multi-color paint, improves storage stability, and can prepare a green, environmentally friendly and healthy multi-color paint that does not contain formaldehyde and has extremely low VOC.

[0038] Water-based multi-color paints are primarily used to simulate stone, hence the names "liquid stone" and "granite-like exterior wall paints." They consist of two phases: a continuous phase and a dispersed phase formed by granulation of a tinting base and protective adhesive. The protective adhesive ensures the stability and color definition of the water-based multi-color paint, offering numerous advantages including production stability, storage stability, and application stability. Therefore, the protective adhesive plays a crucial role in the overall formulation.

[0039] SMP-AT uses montmorillonite as a carrier and reacts with a covering agent under specific reaction conditions to cover a special variety of synthetic materials between the montmorillonite layers. Its sterilization principle is: because the microbial cell membrane is negatively charged, the cations between the SMP-AT layers adsorb on the microbial cell surface, first destroying the cell membrane, and then allowing the carrier with sterilization ability to enter the cell, causing bacterial protein denaturation, destroying the activity of the bacterial strain synthase, causing it to lose its ability to divide and proliferate and die. Because lithium magnesium silicate is also a sheet structure, in which the positive charge is distributed on the surface and the negative charge is distributed on the side, thus building a card house structure. At the same time, due to the large amount of cations contained in SMP-AT, a large amount of sheet-like lithium magnesium silicate and the cations of SMP-AT adsorb each other, greatly increasing the interlayer distance of lithium magnesium silicate. When SMP-AT is used in the water-based multi-color coating of the present invention, the reactivity of the protective glue, cellulose and emulsion is reduced, improving viscosity stability, making the viscosity stable and no longer growing, and ensuring the storage stability of the water-based multi-color coating.

[0040] In the present invention, the non-toxic antibacterial and mildew-proofing agent SMP-AT is added to both the base material and the continuous phase. If it is only added to the base material, the antibacterial and mildew-proofing effect of the dry paint film is not obvious; if the non-toxic antibacterial and mildew-proofing agent SMP-AT is only added to the continuous phase, the stability of the color dots after hot storage is relatively low, and the state of the color dots before and after hot storage is greatly different.

[0041] In some embodiments of the present invention, in the water-based multi-color coating, the weight proportion of the base material is typically but not limited to 300 parts, 350 parts, 400 parts, 450 parts or 500 parts; the weight proportion of the protective glue is typically but not limited to 200 parts, 250 parts, 300 parts, 350 parts or 400 parts; the weight proportion of the continuous phase is typically but not limited to 200 parts, 250 parts, 300 parts, 350 parts or 400 parts.

[0042] Furthermore, in the base material and the continuous phase, the weight proportions of SMP-AT are independently 1 part to 3 parts.

[0043] When the weight percentage of SMP-AT is less than 1 part, the coating's viscosity stability and mildew and antibacterial properties are lower. When the weight percentage of SMP-AT is greater than 3 parts, the coating's viscosity stability is not significantly improved compared to 0.3 parts. The weight percentage of SMP-AT is typically, but not limited to, 1, 2, or 3 parts.

[0044] Furthermore, the base material also includes, by weight, 150-230 parts of acrylic emulsion, 150-220 parts of kaolin, 10-20 parts of titanium dioxide, 7-9 parts of methyl cellulose, 10-15 parts of film-forming aid, 10-15 parts of antifreeze, 50-80 parts of protective rubber powder solution, 0.3-0.5 parts of hydrophobically modified associative cellulose, 2-3 parts of dispersant, 400-500 parts of deionized water, 1-3 parts of wetting agent, 2-3 parts of defoaming agent and 1-2 parts of pH regulator.

[0045] Among them, the weight proportion of acrylic emulsion is typically but not limited to 150 parts, 160 parts, 170 parts, 180 parts, 190 parts, 200 parts, 210 parts, 220 parts or 230 parts; the weight proportion of kaolin is typically but not limited to 150 parts, 160 parts, 170 parts, 180 parts, 190 parts, 200 parts, 210 parts or 220 parts; the weight proportion of titanium dioxide is typically but not limited to 10 parts, 12 parts, 14 parts, 16 parts, 18 parts or 20 parts; the weight proportion of methyl cellulose is typically but not limited to 7 parts, 8 parts or 9 parts; the weight proportion of film-forming aid is typically but not limited to 10 parts, 11 parts, 12 parts, 13 parts, 14 parts or 15 parts; the weight proportion of antifreeze is typically but not limited to 10 parts, 11 parts, 12 parts, 13 parts, 14 parts or 15 parts; the weight portion of the protective rubber powder solution is typically but not limited to 50 parts, 60 parts, 70 parts or 80 parts; the weight portion of the hydrophobically modified cellulose is typically but not limited to 0.3 parts, 0.4 parts or 0.5 parts; the weight portion of the dispersant is typically but not limited to 2 parts, 25 parts or 3 parts; the weight portion of the deionized water is typically but not limited to 400 parts, 420 parts, 440 parts, 460 parts, 480 parts or 500 parts; the weight portion of the wetting agent is typically but not limited to 1 part, 2 parts or 3 parts; the weight portion of the defoaming agent is typically but not limited to 2 parts, 25 parts or 3 parts; the weight portion of the pH regulator is typically but not limited to 1 part, 15 parts or 2 parts.

[0046] It should be noted that the protective rubber powder solution used in the present invention is a solution formed by dissolving the protective rubber in water, wherein the mass proportion of the protective rubber powder is 5%-10%.

[0047] Furthermore, the continuous phase also includes 40-70 parts of a micro-reactive silicone acrylic emulsion, 20.0-30.0 parts of deionized water, 2.0-6.0 parts of a film-forming aid, 3.0-8.0 parts of an antifreeze agent, 0.05-0.3 parts of a pH regulator, and 0.5-2.0 parts of a thickener.

[0048] Among them, the weight proportion of the micro-reactive silicone acrylic emulsion is typically, but not limited to, 40 parts, 50 parts, 60 parts, or 70 parts; the weight proportion of deionized water is typically, but not limited to, 20.0 parts, 22.0 parts, 24.0 parts, 26.0 parts, or 30.0 parts; the weight proportion of the film-forming aid is typically, but not limited to, 2.0 parts, 3.0 parts, 4.0 parts, 5.0 parts, or 6.0 parts; the weight proportion of the antifreeze is typically, but not limited to, 3.0 parts, 4.0 parts, 5.0 parts, 6.0 parts, 7.0 parts or 8.0 parts by weight; the weight parts of the pH adjuster are typically but not limited to 0.05 parts, 0.1 parts, 0.15 parts, 0.2 parts, 0.25 parts or 0.3 parts; the weight parts of the thickener are typically but not limited to 0.5 parts, 0.7 parts, 0.9 parts, 1.1 parts, 1.3 parts, 1.5 parts, 1.7 parts, 1.9 parts or 2.0 parts.

[0049] Preferably, the antifreeze comprises an environmentally friendly antifreeze.

[0050] Furthermore, the protective glue comprises 60-100 parts of protective glue powder, 800-1000 parts of deionized water and 3-5 parts of anti-settling agent.

[0051] Among them, the weight proportion of the protective rubber powder is typically but not limited to 60 parts, 70 parts, 80 parts, 90 parts or 100 parts; the weight proportion of deionized water is typically but not limited to 800 parts, 850 parts, 900 parts, 950 parts or 1000 parts; the weight proportion of the anti-settling agent is typically but not limited to 3.0 parts, 3.5 parts, 4.0 parts, 4.5 parts or 5.0 parts.

[0052] Preferably, the anti-settling agent comprises a high-thixotropic, low-viscosity anti-settling agent. In the water-based multi-color coating system of the present application, the high-thixotropic, low-viscosity anti-settling agent can improve the heat storage suspension performance, achieving the effect of no stratification after heat storage, and increase the spray volume per spray, making the spray less likely to sag. At the same time, the low viscosity has little effect on the viscosity of the granulation protective rubber, which is more conducive to the granulation of color dots.

[0053] Furthermore, the wetting agent includes an anionic wetting agent. In the water-based multi-color coating system of the present application, the anionic wetting agent can improve the stability of the color point state and improve the color development of the base material.

[0054] Preferably, the defoamer comprises an emulsified defoamer. In the water-based multi-color coating system of the present application, the emulsified defoamer has higher compatibility, longer-lasting defoaming performance, stronger bubble breaking ability, and better foam suppression ability.

[0055] Preferably, the antifreeze comprises an environmentally friendly antifreeze.

[0056] Furthermore, the film-forming aid includes at least one of lauryl alcohol, ethylene glycol monobutyl ether, diethylene glycol monobutyl ether, ethylene glycol monopropyl ether and propylene glycol monobutyl ether.

[0057] Preferably, the protective rubber powder comprises lithium magnesium silicate.

[0058] The second aspect of the present invention provides a method for preparing the water-based multi-color paint. After the base material is toned, the protective glue is added and granulated using a dispersion disk. After granulation, it is mixed with the continuous phase to obtain a water-based multi-color paint.

[0059] The preparation method of the water-based multi-color coating provided by the present invention has a continuous process, a high degree of mechanization, high production efficiency, and is suitable for large-scale industrial production. Furthermore, the preparation method of the base material is:

[0060] A wetting agent, a dispersant, SMP-AT, a defoaming agent, titanium dioxide, kaolin, hydrophobically modified associative cellulose and methyl cellulose are added to deionized water in sequence and stirred for 5-10 minutes. A pH regulator is then added and dispersed at 1400-2000 rpm for 30-40 minutes. An antifreeze agent, a film-forming aid and an acrylic emulsion are then added and dispersed at 800-1200 rpm for 10-15 minutes. Finally, a protective rubber powder solution is added, mixed and dispersed at 1000-1500 rpm for 10-15 minutes until uniform dispersion is achieved to obtain the base material.

[0061] The third aspect of the present invention provides the use of the water-based multi-color paint in the fields of building exterior walls, interior wall decoration, special coatings or handicrafts.

[0062] The application of the water-based multi-color paint provided by the present invention in the fields of building exterior walls, interior wall decoration, special paints or handicrafts improves the durability of the coating and promotes the development of the above fields.

[0063] The present invention is further illustrated below by specific examples and comparative examples. However, it should be understood that these examples are merely for the purpose of further explanation and should not be construed as limiting the present invention in any form. The raw materials used in the examples and comparative examples of the present invention, unless otherwise specified, were prepared under conventional conditions or conditions recommended by the manufacturer. Reagents or instruments used without manufacturer's indication are all commercially available conventional products.

[0064] Example 1

[0065] This embodiment provides a water-based multi-color coating, and the preparation method is as follows:

[0066] 1. Base material: 448.6 kg deionized water, 1 kg anionic wetting agent (AEROSOL OT75, Solvay), 2 kg dispersant (Tamol NN 8906, BASF), 1 kg SMP-AT (Zhejiang Fenghong New Materials), 2.5 kg emulsifying defoamer (DF206, Defeng), dispersed at 400 rpm for 5 min, mixed well, added 15 kg titanium dioxide, 215 kg kaolin, 0.4 kg hydrophobically modified associative cellulose (EHM500, Akzo Nobel), 9 kg methyl cellulose and stirred for 8 min, then added 1.5 kg pH adjuster (AMP 95, DOW) increase the speed to 1400 rpm, high-speed dispersion for 30 minutes, continue to add 12 kg of environmentally friendly antifreeze (FT-100, Xuhe New Material Technology) and 12 kg of film-forming aid (TEXANOL, Eastman Chemical), and after uniform dispersion, add 220 kg of acrylic emulsion (3799A, BATF) and continue to disperse for 10 minutes. Finally, add 60 kg of protective rubber powder solution (C512, Chengtian Fine Chemical) and disperse for 15 minutes. The base material preparation is complete.

[0067] 2. Protective rubber: 915 kg of deionized water, 80 kg of protective rubber powder (C512, Chengtian Fine Chemicals) and 5 kg of high thixotropic, low-viscosity anti-settling agent (SMF-LV, Zhejiang Fenghong) were respectively put into a dispersion tank, dispersed at a speed of 1200 r / min for 30 minutes until a clear and transparent liquid is obtained, and set aside.

[0068] 3. Continuous phase: 345 kg of deionized water, 1 kg of SMP-AT (Zhejiang Fenghong New Materials), 2 kg of pH adjuster (AMP 95, DOW), 40 kg of film-forming aid (TEXANOL, Eastman Chemical), 50 kg of environmentally friendly antifreeze (FT-100, Xuhe New Materials Technology), and 550 kg of micro-reactive silicone acrylic emulsion (DP50, Dupree Technology Chemical) were put into a dispersion tank and dispersed evenly at a speed of 400 r / min. 12 kg of thickener (TT-935, Rohm and Haas) was slowly added at a speed of 1000 r / min. The mixture was dispersed for 15 minutes and then set aside.

[0069] 4. After toning 400 kg of the base material in step 1, add it to 300 kg of the granulation protective rubber in step 2 and granulate it using a dispersion disk. After granulation, mix it with 300 kg of the continuous phase in step 3 to obtain a water-based multi-color paint.

[0070] Example 2

[0071] This embodiment provides a water-based multi-color coating. The difference from Example 1 is that the weight of SMP-AT in the base material and the continuous phase is 0.15 kg. The remaining raw materials and methods are the same as those in Example 1 and are not repeated here.

[0072] Example 3

[0073] This embodiment provides a water-based multi-color coating. The difference from Example 1 is that the weight of the SMP-AT in the base material and the continuous phase is 0.2 kg. The remaining raw materials and methods are the same as those in Example 1 and are not repeated here.

[0074] Example 4

[0075] This embodiment provides a water-based multi-color coating. The difference from Example 1 is that the weight of SMP-AT in the base material and the continuous phase is 0.25 kg. The remaining raw materials and methods are the same as those in Example 1 and are not repeated here.

[0076] Example 5

[0077] This embodiment provides a water-based multi-color coating. The difference from Example 1 is that the weight of the SMP-AT in the base material and the continuous phase is 0.3 kg. The remaining raw materials and methods are the same as those in Example 1 and are not repeated here.

[0078] Example 6

[0079] This embodiment provides a water-based multi-color paint. The difference from Example 1 is that the weight of SMP-AT in the base material is 0.3 kg, the weight of SMP-AT in the continuous phase is 0.1 kg, and the remaining raw materials and methods are the same as in Example 1 and are not repeated here.

[0080] Example 7

[0081] This embodiment provides a water-based multi-color paint. The difference from Example 1 is that the weight of SMP-AT in the base material is 0.1 kg, the weight of SMP-AT in the continuous phase is 0.3 kg, and the remaining raw materials and methods are the same as in Example 1 and are not repeated here.

[0082] Example 8

[0083] This embodiment provides a water-based multi-color coating, and the preparation method is as follows:

[0084] 1. Base material: 400.5kg deionized water, 3kg anionic wetting agent (AEROSOL OT75, Solvay), 3kg dispersant (Tamol NN 8906, BASF), 1kg SMP-AT (Zhejiang Fenghong New Materials), 3kg emulsifying defoamer (DF206, Defeng), dispersed at 400rpm for 5min, after uniform dispersion, 20kg titanium dioxide, 218kg kaolin, 0.5kg hydrophobically modified associative cellulose (EHM500, Akzo Nobel), 9kg methyl cellulose were added and stirred for 8min, and then 2kg The pH adjuster (AMP95, DOW) was added, the speed was increased to 1400 rpm, and high-speed dispersion was performed for 30 minutes. 15 kg of environmentally friendly antifreeze (FT-100, Xuhe New Material Technology), 15 kg of film-forming aid (TEXANOL, Eastman Chemical) and 230 kg of acrylic emulsion (3799A, BATF) were added and dispersion was continued for 10 minutes. After uniform dispersion, 80 kg of protective rubber powder solution (C512, Chengtian Fine Chemical) was added and the speed was increased to 1000 rpm. Dispersion was performed for 15 minutes, and the base material preparation was completed.

[0085] 2. Protective rubber: 916 kg of deionized water, 80 kg of protective rubber powder (C512, Chengtian Fine Chemicals) and 4 kg of high thixotropic, low-viscosity anti-settling agent (SMF-LV, Zhejiang Fenghong) were respectively put into a dispersion tank, dispersed at a speed of 1200 r / min for 30 minutes until a clear and transparent liquid is obtained, and set aside.

[0086] 3. Continuous phase: 146 kg of deionized water, 1 kg of SMP-AT (Zhejiang Fenghong New Materials), 3 kg of pH adjuster (AMP 95, DOW), 6 kg of film-forming aid (TEXANOL, Eastman Chemical), 80 kg of environmentally friendly antifreeze (FT-100, Xuhe New Materials Technology), and 700 kg of micro-reactive silicone acrylic emulsion (DP50, Dupree Technology Chemical) were put into a dispersion tank and dispersed evenly at a speed of 400 r / min. 10 kg of thickener (TT-935, Rohm and Haas) was slowly added at a speed of 1000 r / min. The mixture was dispersed for 15 minutes and then set aside.

[0087] 4. After toning 400 kg of the base material in step 1, add it to 300 kg of the granulation protective rubber in step 2 and granulate it using a dispersion disk. After granulation, mix it with 300 kg of the continuous phase in step 3 to obtain a water-based multi-color paint.

[0088] Example 9

[0089] This embodiment provides a water-based multi-color coating, and the preparation method is as follows:

[0090] 1. Base material: 605.7 kg deionized water, 1 kg anionic wetting agent (AEROSOL OT75, Solvay), 2 kg dispersant (Tamol NN 8906, BASF), 1 kg SMP-AT (Zhejiang Fenghong New Materials), 2 kg emulsifying defoamer (DF206, Defeng), dispersed at 400 rpm for 5 minutes, and after uniform dispersion, 10 kg titanium dioxide, 150 kg kaolin, 0.3 kg hydrophobically modified associative cellulose (EHM500, Akzo Nobel), 7 kg methyl cellulose were added and stirred for 8 minutes, and then 1 kg The pH adjuster (AMP95, DOW) was added, the speed was increased to 1400 rpm, and high-speed dispersion was performed for 30 minutes. 10 kg of environmentally friendly antifreeze (FT-100, Xuhe New Material Technology), 10 kg of film-forming aid (TEXANOL, Eastman Chemical) and 150 kg of acrylic emulsion (3799A, BATF) were added and dispersion was continued for 8 minutes. After uniform dispersion, 50 kg of protective rubber powder solution (C512, Chengtian Fine Chemical) was added and the speed was increased to 1000 rpm. Dispersion was performed for 15 minutes, and the base material preparation was completed.

[0091] 2. Protective rubber: 937 kg of deionized water, 60 kg of protective rubber powder (C512, Chengtian Fine Chemicals) and 3 kg of high thixotropic, low-viscosity anti-settling agent (SMF-LV, Zhejiang Fenghong) were respectively put into a dispersion tank, dispersed at a speed of 1200 r / min for 30 minutes until a clear and transparent liquid is obtained, and set aside.

[0092] 3. Continuous phase: 532.5 kg of deionized water, 1 kg of SMP-AT (Zhejiang Fenghong New Materials), 1.5 kg of pH adjuster (AMP 95, DOW), 20 kg of film-forming aid (TEXANOL, Eastman Chemical), 30 kg of environmentally friendly antifreeze (FT-100, Xuhe New Materials Technology), and 400 kg of micro-reactive silicone acrylic emulsion (DP50, Dupree Technology Chemical) were put into a dispersion tank and dispersed evenly at a speed of 400 r / min. 15 kg of thickener (TT-935, Rohm and Haas) was slowly added at a speed of 1000 r / min. The mixture was dispersed for 15 minutes and set aside.

[0093] 4. After toning 500 kg of the base material in step 1, add it to 300 kg of the granulation protective rubber in step 2 and granulate it using a dispersion disk. After granulation, mix it with 200 kg of the continuous phase in step 3 to obtain a water-based multi-color paint.

[0094] Comparative Example 1

[0095] This comparative example provides a water-based multi-color coating. The difference from Example 1 is that SMP-AT in the base material and the continuous phase is replaced by 0.5 kg of MIT and 0.5 kg of MBIT. The remaining raw materials and methods are the same as those in Example 1 and are not repeated here.

[0096] Comparative Example 2

[0097] This comparative example provides a water-based multi-color paint. The difference from Example 1 is that SMP-AT in the base material and the continuous phase is replaced by 0.35 kg of MIT, 0.35 kg of CMIT and 0.5 kg of BIT. The remaining raw materials and methods are the same as those in Example 1 and are not repeated here.

[0098] Test Example 1

[0099] The continuous phases of Example 1, Comparative Example 1 and Comparative Example 2 and the water-based multi-color coatings of Example 1, Comparative Example 1 and Comparative Example 2 were subjected to a bacterial challenge on the dry films at 50° C. for 17 days.

[0100] The challenge results are as follows Figure 1 As shown, Example 1 is compared with Comparative Example 1 and the existing common fungicide used in Comparative Example 1, and no abnormality occurs in the dry film mildew and bacteria prevention.

[0101] Test Example 2

[0102] The water-based multi-color coatings of Examples 1-9, Comparative Example 1 and Comparative Example 2 were subjected to storage stability tests at different temperatures. The viscosity data stored under low temperature (5°C), room temperature (about 25°C) and high temperature (50°C) environments were measured on the 0th day, 1st day, 4th day, 7th day, 14th day and 30th day, respectively. The obtained data are shown in Table 1.

[0103] Table 1 Viscosity change table

[0104]

[0105]

[0106] In Table 1, 30d / KU (25°C) refers to the viscosity value measured after the coating is stored at its respective ambient temperature for 30 days, and the coating is heated or cooled to a temperature of 25°C. As can be seen from Table 1, the viscosity data of Examples 1-9 are stored in different storage environments within the range of 0-30 days and the viscosity is tested at 25°C. The viscosity difference is very small compared to the initial viscosity, and the viscosity difference is basically less than 2KU. Comparing the low-temperature viscosity and the high-temperature test viscosity, the viscosity trend is relatively stable, and the viscosity change is small. In the comparative example, the room temperature storage viscosity increases significantly, and the viscosity difference is more than 10KU. At the same time, the low-temperature viscosity change exceeds 20KU, indicating that the low-temperature viscosity stability is poor. The viscosity difference before and after hot storage is also more than 10KU. Compared with the comparative examples 1-2 of the existing commonly used fungicides, the storage viscosity stability of the colorful products is significantly improved after using SMP-AT in Examples 1-9, and the viscosity changes very little in the storage tests at different temperatures. After using SMP-AT, not only does the multi-color coating have excellent mildew and corrosion resistance, but the storage stability of the multi-color finished product is also significantly improved. At the same time, the extremely low VOC of the multi-color finished product is also more green, environmentally friendly and healthy.

[0107] Finally, it should be noted that the above-described embodiments are only specific implementations of the present invention, which are used to illustrate the technical solutions of the present invention, rather than to limit them. The scope of protection of the present invention is not limited thereto. Although the present invention has been described in detail with reference to the above-described embodiments, those skilled in the art should understand that any person skilled in the art can modify or easily conceive of changes to the technical solutions described in the above-described embodiments within the technical scope disclosed by the present invention, or replace some of the technical features therein with equivalents. Such modifications, changes, or replacements do not deviate from the spirit and scope of the technical solutions of the embodiments of the present invention, and should be included in the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be based on the scope of protection of the claims.

Claims

1. A water-based multi-color paint, characterized in that: According to parts by weight, it includes 300-500 parts of base material, 200-400 parts of protective glue and 200-400 parts of continuous phase; The protective glue comprises 60-100 parts of protective glue powder, 800-1000 parts of deionized water and 3-5 parts of anti-settling agent; the protective glue powder is lithium magnesium silicate; The base material and the continuous phase both contain the non-toxic antibacterial and mildew-proof agent SMP-AT.

2. The water-based multi-color paint according to claim 1, characterized in that: In the base material and the continuous phase, the weight proportions of SMP-AT are independently 1 part to 3 parts.

3. The water-based multi-color paint according to claim 1, characterized in that: The base material also includes, by weight, 150-230 parts of acrylic emulsion, 150-220 parts of kaolin, 10-20 parts of titanium dioxide, 7-9 parts of methyl cellulose, 10-15 parts of film-forming aid, 10-15 parts of antifreeze, 50-80 parts of protective rubber powder solution, 0.3-0.5 parts of hydrophobically modified associative cellulose, 2-3 parts of dispersant, 400-500 parts of deionized water, 1-3 parts of wetting agent, 2-3 parts of defoaming agent and 1-2 parts of pH regulator.

4. The water-based multi-color paint according to claim 1, characterized in that: The continuous phase further comprises 40-70 parts of a micro-reactive silicone acrylic emulsion, 20.0-30.0 parts of deionized water, 2.0-6.0 parts of a film-forming aid, 3.0-8.0 parts of an antifreeze agent, 0.05-0.3 parts of a pH regulator, and 0.5-2.0 parts of a thickener.

5. The water-based multi-color paint according to claim 4, characterized in that: The antifreeze includes an environmentally friendly antifreeze.

6. The water-based multi-color paint according to claim 1, characterized in that: The anti-settling agent includes a high thixotropic low viscosity anti-settling agent.

7. The water-based multi-color paint according to claim 3, characterized in that: The wetting agent includes an anionic wetting agent.

8. The water-based multi-color paint according to claim 3, characterized in that: The defoaming agent includes an emulsified defoaming agent.

9. The water-based multi-color paint according to claim 3, characterized in that: The antifreeze includes an environmentally friendly antifreeze.

10. The water-based multi-color paint according to claim 3 or 4, characterized in that: The film-forming aid includes at least one of lauryl alcohol, ethylene glycol monobutyl ether, diethylene glycol monobutyl ether, ethylene glycol monopropyl ether and propylene glycol monobutyl ether.

11. A method for preparing the water-based multi-color coating according to any one of claims 1 to 10, characterized in that: After the base material is toned, the protective glue is added and granulated using a dispersion disk. After the granulation is completed, it is mixed with the continuous phase to obtain a water-based multi-color paint.

12. The preparation method according to claim 11, characterized in that The preparation method of the base material is: A wetting agent, a dispersant, SMP-AT, a defoaming agent, titanium dioxide, kaolin, hydrophobically modified associative cellulose and methyl cellulose are added to deionized water in sequence and stirred for 5-10 minutes. A pH regulator is then added and dispersed at 1400-2000 rpm for 30-40 minutes. An antifreeze agent, a film-forming aid and an acrylic emulsion are then added and dispersed at 800-1200 rpm for 10-15 minutes. Finally, a protective rubber powder solution is added, mixed and dispersed at 1000-1500 rpm for 10-15 minutes until uniform dispersion is achieved to obtain the base material.

13. Use of the water-based multi-color paint according to any one of claims 1 to 10 in the fields of building exterior walls, interior wall decoration, special coatings or handicrafts.

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