Bi-component antibacterial anti-doodling self-cleaning coating

Abstract

The invention relates to a two-component antibacterial anti-doodling self-cleaning coating which is composed of a component A and a component B in a mass ratio of 10: 1, wherein the component A comprises deionized water, an emulsion, triethanolamine, a defoaming agent, a wetting agent, a dispersing agent, titanium dioxide, barium sulfate, a thickening agent, a refilling emulsion, DPNB, a defoaming agent, a flatting agent, a thickening agent, a sterilizing agent, a flatting agent and a wax auxiliary agent; the component B comprises a polyurethane curing agent and propylene glycol diacetate, the coating has excellent adhesiveness and excellent chemical stability, meanwhile, a double-effect antibacterial and mildew-proof formula ensures that a coating film has high-standard long-acting antibacterial and mildew-proof performance, and the coating film is compact, touches flexible and smooth, has scrubbing resistance, can be kept intact under high-frequency cleaning, and is free of pollution. The anti-graffiti coating has the advantages of outstanding anti-graffiti performance, no peeling, no stripping, difficult adhesion of stains and easy removal, safety and environmental protection of a water-based system, convenient construction, good brushing leveling property, and suitableness for the coating requirements of a variety of substrates and environments.

Description

Technical Field

[0001] This invention relates to the field of coatings, specifically a two-component antibacterial, anti-graffiti, and self-cleaning coating. Background Technology

[0002] Currently, the coatings industry is developing towards environmental protection, functionality, and high performance. With increasing environmental awareness and consumers' pursuit of a healthy lifestyle, the demand for low-VOC, non-toxic, harmless, antibacterial, and mildew-resistant products in the interior wall coatings market continues to rise. Waterborne polyurethane coatings, due to their low odor, excellent environmental performance, and good stain and chemical resistance, have become an important development direction for high-end interior wall decoration materials. In hospitals, schools, public transportation, and homes, coatings not only need to have good decorative properties but also comprehensive functions such as antibacterial properties, anti-graffiti, and self-cleaning. With the application of nanotechnology, resin hybridization, and functional additives, the performance of existing antibacterial coatings on the market is constantly improving and they are widely used in medical and health, food processing, and public facilities fields.

[0003] However, existing waterborne polyurethane antibacterial coatings still have shortcomings in terms of overall performance, specifically as follows:

[0004] 1. The antibacterial properties of some products decay rapidly, making it difficult to achieve long-term effective antibacterial effects;

[0005] 2. Anti-graffiti function is often difficult to achieve in combination with antibacterial performance. Low surface energy modified materials may migrate or fail during long-term use, resulting in a decrease in anti-fouling effect.

[0006] Meanwhile, some products exhibit unstable performance in terms of abrasion resistance, chemical resistance, and adhesion, limiting their application in high-frequency cleaning and harsh environments. In terms of production processes, many companies still use traditional batch mixing methods, which have problems such as difficulty in color difference control, low production efficiency, and uneven dispersion of functional components, making it difficult to meet the dual requirements of high-end markets for performance and appearance consistency. Summary of the Invention

[0007] The purpose of this invention is to overcome the shortcomings of existing technologies, adapt to practical needs, and provide a two-component antibacterial and anti-graffiti self-cleaning coating. This addresses the issues of rapid degradation of antibacterial performance in some current products, making it difficult to achieve long-term effective antibacterial effects; the difficulty in simultaneously achieving anti-graffiti functionality and antibacterial performance; the potential migration or failure of low surface energy modified materials during long-term use, leading to a decrease in anti-fouling effects; the instability in wear resistance, chemical resistance, and adhesion of some products, limiting their application in high-frequency cleaning and harsh environments; and the continued use of traditional batch mixing processes by many companies, which suffers from difficulties in color difference control, low production efficiency, and uneven dispersion of functional components, making it difficult to meet the dual requirements of high-end markets for performance and appearance consistency.

[0008] To achieve the objectives of this invention, the technical solution adopted is as follows: a two-component antibacterial, anti-graffiti, and self-cleaning coating is designed, consisting of the following components in the indicated mass ratio:

[0009] Component A : Component B = 10 : 1;

[0010] in:

[0011] Component A includes deionized water, emulsion, triethanolamine, defoamer, wetting agent, dispersant, titanium dioxide, barium sulfate, thickener, supplementary emulsion, DPNB, defoamer, leveling agent, thickener, bactericide, leveling agent, and wax additive;

[0012] Component B includes a polyurethane curing agent and propylene glycol diacetate.

[0013] Preferably, component A comprises, by weight parts:

[0014] 30-100 parts deionized water, 400-600 parts emulsion, 2-6 parts triethanolamine, 2-6 parts defoamer, 1-5 parts wetting agent, 4-10 parts dispersant, 150-250 parts titanium dioxide, 60-100 parts barium sulfate, 0.5-2 parts thickener, 300-500 parts supplementary emulsion, 30-70 parts DPNB, 1-3 parts defoamer, 10-20 parts leveling agent, 4-10 parts bactericide, 3-7 parts leveling agent, 4-10 parts wax additive;

[0015] Component B comprises, by weight, the following:

[0016] 60-90 parts of polyurethane curing agent and 10-40 parts of propylene glycol diacetate.

[0017] Preferably, component A comprises 73 parts deionized water, 550 parts emulsion, 4 parts triethanolamine, 4 parts defoamer, 3 parts wetting agent, 6 parts dispersant, 200 parts titanium dioxide, 80 parts barium sulfate, 1 part thickener, 400 parts supplementary emulsion, 50 parts DPNB, 2 parts defoamer, 14 parts leveling agent, 1 part thickener, 6 parts bactericide, 5 parts leveling agent, and 6 parts wax additive.

[0018] Component B comprises 80 parts of polyurethane curing agent and 20 parts of propylene glycol diacetate.

[0019] Preferably, component A comprises: 60 parts deionized water, 500 parts emulsion, 3 parts triethanolamine, 3 parts defoamer, 2 parts wetting agent, 5 parts dispersant, 180 parts titanium dioxide, 70 parts barium sulfate, 1 part thickener, 350 parts supplementary emulsion, 60 parts DPNB, 2 parts defoamer, 12 parts leveling agent, 1 part thickener, 5 parts bactericide, 4 parts leveling agent, and 8 parts wax additive;

[0020] Component B comprises: 80 parts of polyurethane curing agent and 20 parts of propylene glycol diacetate.

[0021] Preferably, component A comprises: 80 parts deionized water, 600 parts emulsion, 3 parts triethanolamine, 3 parts defoamer, 2 parts wetting agent, 6 parts dispersant, 250 parts titanium dioxide, 90 parts barium sulfate, 1 part thickener, 300 parts supplementary emulsion, 50 parts DPNB, 2 parts defoamer, 15 parts leveling agent, 1 part thickener, 8 parts bactericide, 5 parts leveling agent, and 6 parts wax additive;

[0022] Component B comprises: 90 parts of polyurethane curing agent and 10 parts of propylene glycol diacetate.

[0023] Preferably, component A comprises: 70 parts deionized water, 650 parts emulsion, 4 parts triethanolamine, 4 parts defoamer, 3 parts wetting agent, 5 parts dispersant, 200 parts titanium dioxide, 85 parts barium sulfate, 1 part thickener, 0 parts supplementary emulsion, 40 parts DPNB, 2 parts defoamer, 14 parts leveling agent, 1 part thickener, 6 parts bactericide, 4 parts leveling agent, and 5 parts wax additive;

[0024] Component B comprises: 85 parts of polyurethane curing agent and 15 parts of propylene glycol diacetate.

[0025] Preferably, component A comprises: 65 parts deionized water, 520 parts emulsion, 4 parts triethanolamine, 4 parts defoamer, 3 parts wetting agent, 6 parts dispersant, 190 parts titanium dioxide, 80 parts barium sulfate, 1 part thickener, 380 parts supplementary emulsion, 55 parts DPNB, 2 parts defoamer, 14 parts leveling agent, 1 part thickener, 6 parts bactericide, 5 parts leveling agent, and 6 parts wax additive;

[0026] Component B comprises: 75 parts of polyurethane curing agent and 25 parts of propylene glycol diacetate.

[0027] Preferably, component A comprises: 90 parts deionized water, 480 parts emulsion, 2 parts triethanolamine, 2 parts defoamer, 2 parts wetting agent, 4 parts dispersant, 170 parts titanium dioxide, 65 parts barium sulfate, 1 part thickener, 420 parts supplementary emulsion, 35 parts DPNB, 1 part defoamer, 11 parts leveling agent, 1 part thickener, 4 parts bactericide, 3 parts leveling agent, and 4 parts wax additive;

[0028] Component B comprises: 70 parts of polyurethane curing agent and 30 parts of propylene glycol diacetate.

[0029] Preferably, component A comprises: 50 parts deionized water, 560 parts emulsion, 5 parts triethanolamine, 5 parts defoamer, 4 parts wetting agent, 8 parts dispersant, 220 parts titanium dioxide, 95 parts barium sulfate, 1 part thickener, 360 parts supplementary emulsion, 65 parts DPNB, 2 parts defoamer, 16 parts leveling agent, 1 part thickener, 9 parts bactericide, 6 parts leveling agent, and 9 parts wax additive;

[0030] Component B comprises: 88 parts of polyurethane curing agent and 12 parts of propylene glycol diacetate.

[0031] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0032] 1. This invention features excellent adhesion and outstanding chemical stability. Simultaneously, the dual-effect antibacterial and antifungal formula ensures the coating film possesses high-standard, long-lasting antibacterial and antifungal properties. The film is dense, with a soft and silky feel, and possesses washability, maintaining its integrity even under high-frequency cleaning. It exhibits outstanding anti-graffiti performance, does not peel or flake, and stains are difficult to adhere to and easy to remove. The water-based system is safe and environmentally friendly, easy to apply, and has good brushing and leveling properties, making it suitable for coating needs of various substrates and environments. Attached Figure Description

[0033] Figure 1 This is a schematic diagram illustrating the implementation process of the present invention; Detailed Implementation

[0034] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0035] Two-component antibacterial, anti-graffiti, self-cleaning coating, see [link / reference] Figure 1 It consists of components in the following mass ratio:

[0036] Component A : Component B = 10 : 1;

[0037] in:

[0038] Component A includes deionized water, emulsion, triethanolamine, defoamer, wetting agent, dispersant, titanium dioxide, barium sulfate, thickener, supplementary emulsion, DPNB, defoamer, leveling agent, thickener, bactericide, leveling agent, and wax additive;

[0039] Component B includes polyurethane curing agent and propylene glycol diacetate.

[0040] Specifically, component A, by weight, includes:

[0041] 30-100 parts deionized water, 400-600 parts emulsion, 2-6 parts triethanolamine, 2-6 parts defoamer, 1-5 parts wetting agent, 4-10 parts dispersant, 150-250 parts titanium dioxide, 60-100 parts barium sulfate, 0.5-2 parts thickener, 300-500 parts supplementary emulsion, 30-70 parts DPNB, 1-3 parts defoamer, 10-20 parts leveling agent, 4-10 parts bactericide, 3-7 parts leveling agent, 4-10 parts wax additive;

[0042] Component B, by weight, comprises:

[0043] 60-90 parts of polyurethane curing agent and 10-40 parts of propylene glycol diacetate.

[0044] Specifically, component A includes 73 parts deionized water, 550 parts emulsion, 4 parts triethanolamine, 4 parts defoamer, 3 parts wetting agent, 6 parts dispersant, 200 parts titanium dioxide, 80 parts barium sulfate, 1 part thickener, 400 parts supplementary emulsion, 50 parts DPNB, 2 parts defoamer, 14 parts leveling agent, 1 part thickener, 6 parts bactericide, 5 parts leveling agent, and 6 parts wax additive.

[0045] Component B consists of 80 parts of polyurethane curing agent and 20 parts of propylene glycol diacetate.

[0046] Furthermore, component A includes: 60 parts deionized water, 500 parts emulsion, 3 parts triethanolamine, 3 parts defoamer, 2 parts wetting agent, 5 parts dispersant, 180 parts titanium dioxide, 70 parts barium sulfate, 1 part thickener, 350 parts supplementary emulsion, 60 parts DPNB, 2 parts defoamer, 12 parts leveling agent, 1 part thickener, 5 parts bactericide, 4 parts leveling agent, and 8 parts wax additive;

[0047] Component B includes: 80 parts of polyurethane curing agent and 20 parts of propylene glycol diacetate.

[0048] Furthermore, component A includes: 80 parts deionized water, 600 parts emulsion, 3 parts triethanolamine, 3 parts defoamer, 2 parts wetting agent, 6 parts dispersant, 250 parts titanium dioxide, 90 parts barium sulfate, 1 part thickener, 300 parts supplementary emulsion, 50 parts DPNB, 2 parts defoamer, 15 parts leveling agent, 1 part thickener, 8 parts bactericide, 5 parts leveling agent, and 6 parts wax additive;

[0049] Component B includes: 90 parts of polyurethane curing agent and 10 parts of propylene glycol diacetate.

[0050] It is worth noting that component A includes: 70 parts deionized water, 650 parts emulsion, 4 parts triethanolamine, 4 parts defoamer, 3 parts wetting agent, 5 parts dispersant, 200 parts titanium dioxide, 85 parts barium sulfate, 1 part thickener, 0 parts supplementary emulsion, 40 parts DPNB, 2 parts defoamer, 14 parts leveling agent, 1 part thickener, 6 parts bactericide, 4 parts leveling agent, and 5 parts wax additive.

[0051] Component B includes: 85 parts of polyurethane curing agent and 15 parts of propylene glycol diacetate.

[0052] It is worth noting that component A includes: 65 parts deionized water, 520 parts emulsion, 4 parts triethanolamine, 4 parts defoamer, 3 parts wetting agent, 6 parts dispersant, 190 parts titanium dioxide, 80 parts barium sulfate, 1 part thickener, 380 parts supplementary emulsion, 55 parts DPNB, 2 parts defoamer, 14 parts leveling agent, 1 part thickener, 6 parts bactericide, 5 parts leveling agent, and 6 parts wax additive.

[0053] Component B includes: 75 parts of polyurethane curing agent and 25 parts of propylene glycol diacetate.

[0054] It is worth mentioning that component A includes: 90 parts deionized water, 480 parts emulsion, 2 parts triethanolamine, 2 parts defoamer, 2 parts wetting agent, 4 parts dispersant, 170 parts titanium dioxide, 65 parts barium sulfate, 1 part thickener, 420 parts supplementary emulsion, 35 parts DPNB, 1 part defoamer, 11 parts leveling agent, 1 part thickener, 4 parts bactericide, 3 parts leveling agent, and 4 parts wax additive.

[0055] Component B includes: 70 parts of polyurethane curing agent and 30 parts of propylene glycol diacetate.

[0056] It is worth emphasizing that component A includes: 50 parts deionized water, 560 parts emulsion, 5 parts triethanolamine, 5 parts defoamer, 4 parts wetting agent, 8 parts dispersant, 220 parts titanium dioxide, 95 parts barium sulfate, 1 part thickener, 360 parts supplementary emulsion, 65 parts DPNB, 2 parts defoamer, 16 parts leveling agent, 1 part thickener, 9 parts bactericide, 6 parts leveling agent, and 9 parts wax additive.

[0057] Component B includes: 88 parts of polyurethane curing agent and 12 parts of propylene glycol diacetate.

[0058] Example 1

[0059] formula

[0060] Component A (parts by weight): Deionized water 73, emulsion 550, triethanolamine 4, defoamer 4, wetting agent 3, dispersant 6, titanium dioxide 200, barium sulfate 80, thickener 1, supplementary emulsion 400, DPNB 50, defoamer 2, leveling agent 14, thickener 1, bactericide 6, leveling agent 5, wax additive 6.

[0061] Component B (parts by weight): 80 parts polyurethane curing agent, 20 parts propylene glycol diacetate.

[0062] Implementation process

[0063] S1. Screening of emulsions and powders:

[0064] S2. Preliminary formulation and debugging;

[0065] S3, Test Performance;

[0066] S4. Conduct construction tests;

[0067] S5, Product pilot testing.

[0068] By screening the emulsion and powder, and testing their performance, the product meets the testing requirements for inorganic non-metallic surface coatings in HG / T4761-2014 Waterborne Polyurethane Coatings, and also meets the standard of GB 18582-2020 Limits of Hazardous Substances in Wall Coatings for Buildings.

[0069] Actual performance

[0070] Paint film appearance: No cracks, no runs

[0071] Solid content: 55.0–57.0%

[0072] Fineness: ≤45μm

[0073] Viscosity (25℃): 85–90 KU

[0074] Density: 1.32 ± 0.03 g / mL

[0075] pH: 8.0–9.5

[0076] Storage stability (50℃, 2d / 7d): No abnormalities.

[0077] Water resistance (48h): No abnormalities.

[0078] Alkali resistance (96h): No abnormalities.

[0079] Drying: Surface dryness ≤ 2 hours (actual dryness shall be judged as qualified according to the corresponding standard)

[0080] Abrasion resistance (750g / 500r): ≤0.06g.

[0081] Example 2

[0082] formula

[0083] Component A (parts by weight): Deionized water 60, emulsion 500, triethanolamine 3, defoamer 3, wetting agent 2, dispersant 5, titanium dioxide 180, barium sulfate 70, thickener 1, supplementary emulsion 350, DPNB 60, defoamer 2, leveling agent 12, thickener 1, bactericide 5, leveling agent 4, wax additive 8;

[0084] Component B (parts by weight): 80 parts polyurethane curing agent, 20 parts propylene glycol diacetate.

[0085] Implementation process

[0086] Same as Example 1.

[0087] Actual performance

[0088] Paint film appearance: No cracks, no runs;

[0089] Solid content: 54.5–56.5% (slightly lower than in Example 1);

[0090] Fineness: 43μm (close to the upper limit, inferior to Example 1);

[0091] Viscosity (25℃): 83–86 KU (slightly lower, average leveling when roller coated);

[0092] Density: 1.31 g / mL; pH: 8.4–9.0; Stable during storage (50℃ for 2 days / 7 days) without any abnormalities;

[0093] Water resistance (48h): Slight whitening at the edges, self-recovery within 24h;

[0094] Alkali resistance (96h): slight loss of gloss;

[0095] Surface drying takes approximately 2.3 hours (>Example 1), while actual drying takes ≤26 hours.

[0096] Abrasion resistance (750g / 500r): 0.068g (>0.06g, inferior to Example 1).

[0097] Example 3

[0098] formula

[0099] Component A (parts by weight): Deionized water 80, emulsion 600, triethanolamine 3, defoamer 3, wetting agent 2, dispersant 6, titanium dioxide 250, barium sulfate 90, thickener 1, supplementary emulsion 300, DPNB 50, defoamer 2, leveling agent 15, thickener 1, bactericide 8, leveling agent 5, wax additive 6;

[0100] Component B (parts by weight): 90 parts polyurethane curing agent, 10 parts propylene glycol diacetate.

[0101] Implementation process

[0102] Same as Example 1.

[0103] Actual performance

[0104] Solid content: 55.0–57.0%; Fineness: 44 μm;

[0105] Viscosity: 90–93 KU (slightly high, feels slightly heavy when roller coated);

[0106] Density: 1.34 g / mL; pH: 8.3–9.0;

[0107] Water resistance (48h): Pass; Alkali resistance (96h): Slight loss of gloss at the edges and corners;

[0108] Surface drying time: 2.0 hours;

[0109] Abrasion resistance: 0.065g (slightly worse than Example 1);

[0110] Anti-graffiti: To remove markers, use alcohol or neutral detergent and wipe 2-3 times (1-2 times for Example 1).

[0111] Example 4

[0112] formula

[0113] Component A (parts by weight): Deionized water 70, emulsion 650, triethanolamine 4, defoamer 4, wetting agent 3, dispersant 5, titanium dioxide 200, barium sulfate 85, thickener 1, supplementary emulsion 0, DPNB 40, defoamer 2, leveling agent 14, thickener 1, bactericide 6, leveling agent 4, wax additive 5;

[0114] Component B (parts by weight): 85 parts polyurethane curing agent, 15 parts propylene glycol diacetate.

[0115] Implementation process

[0116] Same as Example 1.

[0117] Actual performance

[0118] Solid content: 55±1%; Fineness: 45μm (to the limit);

[0119] Viscosity: 84–87 KU; Density: 1.31 g / mL; pH: 8.3–9.1;

[0120] Water resistance (48h): slight whitening (recoverable); Alkali resistance (96h): slight loss of gloss;

[0121] Surface drying time: 2.4 hours;

[0122] Abrasion resistance: 0.074g (significantly worse than Example 1);

[0123] Workability: Leveling is acceptable, but the open time is slightly shorter than in Example 1.

[0124] Example 5

[0125] formula

[0126] Component A (parts by weight): Deionized water 65, emulsion 520, triethanolamine 4, defoamer 4, wetting agent 3, dispersant 6, titanium dioxide 190, barium sulfate 80, thickener 1, supplementary emulsion 380, DPNB 55, defoamer 2, leveling agent 14, thickener 1, bactericide 6, leveling agent 5, wax additive 6;

[0127] Component B (parts by weight): 75 parts polyurethane curing agent, 25 parts propylene glycol diacetate.

[0128] Implementation process

[0129] Same as Example 1.

[0130] Actual performance

[0131] Solid content: 54.0–56.0%; Fineness: 44 μm;

[0132] Viscosity: 84–88 KU; Density: 1.30 g / mL;

[0133] Storage stability: Viscosity increased by 3–5 KU after 7 days at 50°C (acceptable, but not as stable as in Example 1);

[0134] Water resistance (48h): Pass; Alkali resistance (96h): Slight whitening at the edges;

[0135] Surface drying time: 2.2 hours;

[0136] Abrasion resistance: 0.070g (inferior to Example 1).

[0137] Example 6

[0138] formula

[0139] Component A (parts by weight): Deionized water 90, emulsion 480, triethanolamine 2, defoamer 2, wetting agent 2, dispersant 4, titanium dioxide 170, barium sulfate 65, thickener 1, supplementary emulsion 420, DPNB 35, defoamer 1, leveling agent 11, thickener 1, bactericide 4, leveling agent 3, wax additive 4;

[0140] Component B (parts by weight): 70 parts polyurethane curing agent, 30 parts propylene glycol diacetate.

[0141] Implementation process

[0142] Same as Example 1.

[0143] Actual performance

[0144] Solid content: 53.5–55.5%; Fineness: 45 μm;

[0145] Viscosity: 82–86 KU (relatively low, slightly less resistant to sag on vertical surfaces);

[0146] Density: 1.28–1.30 g / mL;

[0147] Water resistance (48h): Pass; Alkali resistance (96h): Slight loss of gloss;

[0148] Surface drying for 2.5 hours;

[0149] Abrasion resistance: 0.072g (inferior to Example 1);

[0150] Anti-graffiti: The removal speed is slower than that of Example 1, requiring two or more wipes.

[0151] Example 7

[0152] formula

[0153] Component A (parts by weight): Deionized water 50, emulsion 560, triethanolamine 5, defoamer 5, wetting agent 4, dispersant 8, titanium dioxide 220, barium sulfate 95, thickener 1, supplementary emulsion 360, DPNB 65, defoamer 2, leveling agent 16, thickener 1, bactericide 9, leveling agent 6, wax additive 9;

[0154] Component B (parts by weight): 88 parts polyurethane curing agent, 12 parts propylene glycol diacetate.

[0155] Implementation process

[0156] Same as Example 1.

[0157] Actual performance

[0158] Solid content: 55–57%; Fineness: 45 μm;

[0159] Viscosity: 88–92 KU; Density: 1.35 g / mL;

[0160] Water resistance (48h): Pass; Alkali resistance (96h): Slight discoloration at the edges and corners;

[0161] Surface drying time: 2.6 hours;

[0162] Abrasion resistance: 0.076g (the worst in this group, significantly inferior to Example 1);

[0163] Workability: It has strong hiding power, but the resistance is relatively high when applying by hand with a roller.

[0164] The specific comparison data is shown in the table below:

[0165]

[0166]

[0167] Summarize

[0168] Example 1, under the same testing conditions, achieved a wear resistance of 0.056g (≤0.06g), surface dryness of ≈1.5–2.0h, KU85–90, fineness ≤45μm (actual control is better than other examples), and no abnormalities in water resistance for 48h / alkali resistance for 96h, comprehensively balancing hardness / flexibility with leveling / open time.

[0169] Example 1 shows that the low surface energy component has the best compatibility with the wax system. Marker pen stains can be removed with 1-2 wipes, and the paint film does not lose its gloss or peel after repeated cleaning.

[0170] Example 1: Stable at 50℃ for 2d / 7d with small batch-to-batch viscosity fluctuations; dense, flexible and silky coatings are easily obtained by both roller coating and brush coating.

[0171] in conclusion:

[0172] Example 1 is superior to Examples 2 to 7 in key indicators such as wear resistance, water / alkali resistance, drying speed, application feel, and anti-graffiti cleaning efficiency, and is the optimal implementation scheme of the present invention.

[0173] In addition, all components designed in this invention are general standard parts or components known to those skilled in the art. Their structures and principles can be learned by those skilled in the art through technical manuals or conventional experimental methods. They can be fully implemented by those skilled in the art, so there is no need to elaborate. The content protected by this invention does not involve improvements to the internal structure and methods.

Claims

1. A two-component antibacterial, anti-graffiti, self-cleaning coating, characterized in that, It consists of components in the following mass ratio: Component A : Component B = 10 : 1; in: Component A includes deionized water, emulsion, triethanolamine, defoamer, wetting agent, dispersant, titanium dioxide, barium sulfate, thickener, supplementary emulsion, DPNB, defoamer, leveling agent, thickener, bactericide, leveling agent, and wax additive; Component B includes a polyurethane curing agent and propylene glycol diacetate.

2. The two-component antibacterial, anti-graffiti, and self-cleaning coating as described in claim 1, characterized in that, Component A comprises, by weight, the following: 30-100 parts deionized water, 400-600 parts emulsion, 2-6 parts triethanolamine, 2-6 parts defoamer, 1-5 parts wetting agent, 4-10 parts dispersant, 150-250 parts titanium dioxide, 60-100 parts barium sulfate, 0.5-2 parts thickener, 300-500 parts supplementary emulsion, 30-70 parts DPNB, 1-3 parts defoamer, 10-20 parts leveling agent, 4-10 parts bactericide, 3-7 parts leveling agent, 4-10 parts wax additive; Component B comprises, by weight, the following: 60-90 parts of polyurethane curing agent and 10-40 parts of propylene glycol diacetate.

3. The two-component antibacterial and anti-graffiti self-cleaning coating as described in claim 2, characterized in that, Component A comprises 73 parts deionized water, 550 parts emulsion, 4 parts triethanolamine, 4 parts defoamer, 3 parts wetting agent, 6 parts dispersant, 200 parts titanium dioxide, 80 parts barium sulfate, 1 part thickener, 400 parts supplementary emulsion, 50 parts DPNB, 2 parts defoamer, 14 parts leveling agent, 1 part thickener, 6 parts bactericide, 5 parts leveling agent, and 6 parts wax additive. Component B comprises 80 parts of polyurethane curing agent and 20 parts of propylene glycol diacetate.

4. The two-component antibacterial and anti-graffiti self-cleaning coating as described in claim 2, characterized in that, Component A comprises: 60 parts deionized water, 500 parts emulsion, 3 parts triethanolamine, 3 parts defoamer, 2 parts wetting agent, 5 parts dispersant, 180 parts titanium dioxide, 70 parts barium sulfate, 1 part thickener, 350 parts supplementary emulsion, 60 parts DPNB, 2 parts defoamer, 12 parts leveling agent, 1 part thickener, 5 parts bactericide, 4 parts leveling agent, and 8 parts wax additive. Component B comprises: 80 parts of polyurethane curing agent and 20 parts of propylene glycol diacetate.

5. The two-component antibacterial and anti-graffiti self-cleaning coating as described in claim 2, characterized in that, Component A comprises: 80 parts deionized water, 600 parts emulsion, 3 parts triethanolamine, 3 parts defoamer, 2 parts wetting agent, 6 parts dispersant, 250 parts titanium dioxide, 90 parts barium sulfate, 1 part thickener, 300 parts supplementary emulsion, 50 parts DPNB, 2 parts defoamer, 15 parts leveling agent, 1 part thickener, 8 parts bactericide, 5 parts leveling agent, and 6 parts wax additive. Component B comprises: 90 parts of polyurethane curing agent and 10 parts of propylene glycol diacetate.

6. The two-component antibacterial and anti-graffiti self-cleaning coating as described in claim 2, characterized in that, Component A comprises: 70 parts deionized water, 650 parts emulsion, 4 parts triethanolamine, 4 parts defoamer, 3 parts wetting agent, 5 parts dispersant, 200 parts titanium dioxide, 85 parts barium sulfate, 1 part thickener, 0 parts supplementary emulsion, 40 parts DPNB, 2 parts defoamer, 14 parts leveling agent, 1 part thickener, 6 parts bactericide, 4 parts leveling agent, and 5 parts wax additive. Component B comprises: 85 parts of polyurethane curing agent and 15 parts of propylene glycol diacetate.

7. The two-component antibacterial and anti-graffiti self-cleaning coating as described in claim 2, characterized in that, Component A comprises: 65 parts deionized water, 520 parts emulsion, 4 parts triethanolamine, 4 parts defoamer, 3 parts wetting agent, 6 parts dispersant, 190 parts titanium dioxide, 80 parts barium sulfate, 1 part thickener, 380 parts supplementary emulsion, 55 parts DPNB, 2 parts defoamer, 14 parts leveling agent, 1 part thickener, 6 parts bactericide, 5 parts leveling agent, and 6 parts wax additive. Component B comprises: 75 parts of polyurethane curing agent and 25 parts of propylene glycol diacetate.

8. The two-component antibacterial and anti-graffiti self-cleaning coating as described in claim 2, characterized in that, Component A comprises: 90 parts deionized water, 480 parts emulsion, 2 parts triethanolamine, 2 parts defoamer, 2 parts wetting agent, 4 parts dispersant, 170 parts titanium dioxide, 65 parts barium sulfate, 1 part thickener, 420 parts supplementary emulsion, 35 parts DPNB, 1 part defoamer, 11 parts leveling agent, 1 part thickener, 4 parts bactericide, 3 parts leveling agent, and 4 parts wax additive. Component B comprises: 70 parts of polyurethane curing agent and 30 parts of propylene glycol diacetate.

9. The two-component antibacterial and anti-graffiti self-cleaning coating as described in claim 2, characterized in that, Component A comprises: 50 parts deionized water, 560 parts emulsion, 5 parts triethanolamine, 5 parts defoamer, 4 parts wetting agent, 8 parts dispersant, 220 parts titanium dioxide, 95 parts barium sulfate, 1 part thickener, 360 parts supplementary emulsion, 65 parts DPNB, 2 parts defoamer, 16 parts leveling agent, 1 part thickener, 9 parts bactericide, 6 parts leveling agent, and 9 parts wax additive. Component B comprises: 88 parts of polyurethane curing agent and 12 parts of propylene glycol diacetate.

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