Multicolor artistic paint without multiple color particles and its preparation method

Abstract

This invention discloses a multi-colored artistic paint that does not require multiple color particles for tinting and its preparation method, comprising the following steps: adding 50-70 parts by weight of modified base paint and 10-20 parts by weight of continuous phase to 20-30 parts by weight of protective colloid solution, dispersing at high speed until a set fine particle state is achieved, then adding 1-5 parts by weight of pigment, stirring at low speed until uniform, and discharging. This invention simplifies the process of separate tinting and group granulation of color particles, requiring only the production of one white paint product. Tinting can be directly performed on the finished paint, and it can be applied directly after tinting, displaying the effect of multiple color particles, with a strong texture, good feel, certain thickness and toughness, good crack resistance and scratch resistance, achieving free tinting, and ready for immediate use.

Description

Technical Field

[0001] This invention relates to the field of coating technology, and in particular to a multi-colored artistic paint that does not require multiple color particles for color mixing and its preparation method. Background Technology

[0002] In the construction industry, stone is widely used for interior and exterior wall decoration. However, due to its weight, applying stone to the exterior walls of high-rise buildings is inconvenient for construction workers. Furthermore, over time, there is a risk of stone accidentally falling off. Therefore, stone is gradually being replaced by paint.

[0003] In the development of coatings, multicolor coatings, a water-based environmentally friendly coating, offer a good imitation of stone and are widely used. Current multicolor artistic coatings require separating the base paint into various hues for individual color mixing. This involves encapsulating the colorant within the base paint, grouping them into particles of the required size and shape, and finally mixing them together to form the final product. Since most colors are custom-made to order, mass production and inventory are not feasible, resulting in a long production cycle and complex color mixing. Adding colorant during the mixing stage can decrease particle stability, ultimately affecting the coating's decorative effect and durability. Furthermore, as an artistic coating, especially for interior wall applications, the relatively small production volume leads to significant waste, and color changes are also troublesome. Summary of the Invention

[0004] To solve the above-mentioned technical problems, the present invention provides a multi-color art paint and its preparation method that does not require multiple color particles for color mixing. The present invention simplifies the process of color mixing and group granulation of color particles separately. Only one white paint product needs to be produced. Color can be directly mixed in the finished paint. After color mixing, it can be applied directly, showing the effect of multi-color particles. It has a strong texture, good feel, certain thickness and toughness, good crack resistance and scratch resistance, and realizes the freedom of color mixing and can be used immediately after mixing.

[0005] The objective of this invention is achieved through the following technical solution:

[0006] In a first aspect, the present invention provides a method for preparing a modified acrylate copolymer, which is specifically achieved through the following steps:

[0007] 50-60 parts by weight of N-hydroxyethylacrylamide, 140-160 parts by weight of castor oil, 130-140 parts by weight of tetrahydrofuran, 0.1-2 parts by weight of sodium hydroxide and 0.01-0.5 parts by weight of 2,6-dimethylphenol were placed in a reaction vessel and stirred until homogeneous. The mixture was then heated in a water bath at 40°C for 1-5 hours. After cooling, an appropriate amount of dichloromethane was added for dilution, followed by washing with saturated brine, treatment with magnesium sulfate, filtration, and vacuum drying to obtain castor oil-based vinyl monomers.

[0008] 15-20 parts by weight of castor oil-based vinyl monomer, 20-30 parts by weight of methyl methacrylate, 3-8 parts by weight of butyl acrylate, 1-5 parts by weight of acrylic acid, 0.1-1 parts by weight of sodium dodecyl sulfate, 0.1-1 parts by weight of polyoxyethylene octylphenol ether-10, 0.1-1 parts by weight of ammonium persulfate, 0.1-1 parts by weight of sodium bicarbonate and 25-40 parts by weight of distilled water are placed in a reaction vessel and stirred and mixed evenly to obtain a pre-emulsion.

[0009] Dissolve 0.1 to 0.5 parts by weight of ammonium persulfate in 10 parts by weight of distilled water to form an ammonium persulfate solution;

[0010] 20–30 parts by weight of preemulsion, 60–80 parts by weight of distilled water, 0.1–0.5 parts by weight of sodium bicarbonate, 0.1–0.5 parts by weight of sodium dodecyl sulfate, and 0.1–0.5 parts by weight of polyoxyethylene octylphenol ether-10 were placed in a reaction vessel and heated in a water bath at 80°C. The mixture was stirred at 350–500 rpm until homogeneous. Then, 3–8 parts by weight of ammonium persulfate solution were slowly added dropwise, followed by 50–60 parts by weight of preemulsion. Then, another 3–8 parts by weight of ammonium persulfate solution were slowly added. The mixture was stirred for 1–3 hours and cooled to room temperature. The pH was adjusted to 3.5–4, and 5–10 parts by weight of silane modifier were added. The mixture was then slowly stirred magnetically in an 80°C water bath for 1–3 hours and cooled to room temperature to obtain the modified acrylate copolymer.

[0011] Furthermore, in the preparation steps of the modified acrylate copolymer of the present invention:

[0012] The silane modifier is at least one of 3-mercaptopropyltrimethoxysilane (MPTMS), 3-mercaptopropylmethyldimethoxysilane (HD-M4132), and 3-mercaptopropyltriethoxysilane (MTMO).

[0013] Secondly, the present invention provides a method for preparing a modified base paint, which is specifically achieved through the following steps:

[0014] Weigh out the following components by weight: 40-50 parts distilled water, 20-30 parts modified acrylate copolymer, 5-10 parts 10wt% lithium magnesium silicate aqueous solution, 1-5 parts 5wt% lithium magnesium silicate aqueous solution, 10-15 parts filler, 1-5 parts nano titanium dioxide, 0.5-1.5 parts hydroxyethyl cellulose, and 1-5 parts first auxiliary agent.

[0015] According to the above weight proportions, distilled water, nano titanium dioxide, filler, hydroxyethyl cellulose and the first auxiliary agent are mixed and dispersed at high speed. The pH value of the system is adjusted to 7-9. Then, modified acrylate copolymer, 5wt% magnesium lithium silicate aqueous solution and 10wt% magnesium lithium silicate aqueous solution are added in sequence and dispersed at high speed until uniform. The material is discharged to obtain the modified base paint.

[0016] Furthermore, in the preparation steps of the modified base paint described in this invention:

[0017] The hydroxyethyl cellulose is composed of HE-10k cellulose, 250HHBR cellulose and DC-600 cellulose in a mass ratio of 3:2:6;

[0018] The first additive includes at least one of dispersant, defoamer, preservative, film-forming aid, and antifreeze;

[0019] The filler is at least one of diatomaceous earth, bentonite, kaolin, and talc.

[0020] The nano-titanium dioxide is anatase phase titanium dioxide.

[0021] Thirdly, the present invention provides a method for preparing an antibacterial acrylate copolymer, which is specifically achieved through the following steps:

[0022] Mix 3-6 parts by weight of methyl methacrylate, 5-10 parts by weight of butyl acrylate and 1-3 parts by weight of acrylic acid until homogeneous to form a pre-emulsified solution.

[0023] Dissolve 0.01 to 0.5 parts by weight of potassium persulfate in 5 to 10 parts by weight of distilled water to form a potassium persulfate solution;

[0024] 40–50 parts by weight of distilled water, 1–3 parts by weight of 3-(methacrylamide)propyltrimethylammonium chloride, and 0.1–3 parts by weight of diacetone acrylamide were placed in a reaction vessel and heated to 82–85°C. Then, 10–15 parts by weight of pre-emulsified solution, 1–3 parts by weight of 2-hydroxypropyl acrylate, and 3–7 parts by weight of potassium persulfate solution were slowly added dropwise. The reaction was stirred for 0.5–1 hour. Then, 3–8 parts by weight of pre-emulsified solution, 0.1–3 parts by weight of silane coupling agent, and 2–5 parts by weight of potassium persulfate solution were slowly added. The reaction was stirred for 2–3 hours. The pH of the system was adjusted to 6.5–7.5. Then, 0.1–1 parts by weight of adipic acid dihydrazide was added. The reaction was stirred for 1–2 hours. The mixture was cooled to room temperature and discharged to obtain an antibacterial acrylate copolymer.

[0025] Fourthly, the present invention provides a method for preparing a continuous phase, which is specifically achieved through the following steps:

[0026] Weigh out 15-25 parts of distilled water, 65-75 parts of antibacterial acrylate copolymer, 0.1-0.5 parts of 250HBR cellulose, 0.1-0.5 parts of alkali-swellable thickener, and 0.1-5 parts of the second auxiliary agent according to the following weight proportions;

[0027] According to the above weight proportions, distilled water, 250HBR cellulose and the second auxiliary agent are mixed and dispersed at high speed. Then, antibacterial acrylate copolymer and alkali-swellable thickener are added in sequence and stirred and mixed evenly. The pH value of the system is adjusted and discharged to obtain a continuous phase.

[0028] Furthermore, in the preparation steps of the modified base paint described in this invention:

[0029] The second auxiliary agent includes at least one of dispersant, wetting agent, suspending agent, film-forming aid, antifreeze agent, and defoamer.

[0030] Fifthly, the present invention provides a method for preparing a protective adhesive solution, which is specifically achieved through the following steps:

[0031] By weight, 90-95 parts water, 5-10 parts lithium magnesium silicate and 0.1-0.5 parts suspending agent are placed in a reaction vessel and dispersed at high speed until uniformly mixed, then discharged.

[0032] Sixthly, the present invention provides a method for preparing a multi-colored artistic paint that does not require mixing with multiple color particles, comprising the following steps:

[0033] Add 50-70 parts by weight of the modified base paint and 10-20 parts by weight of the continuous phase to 20-30 parts by weight of the protective colloid solution, stir at high speed to disperse to the set fine particle state, then add 1-5 parts by weight of the colorant, stir at low speed until uniform, and discharge.

[0034] Furthermore, the steps of the present invention also include adding 5 to 10 parts by weight of 150 to 200 mesh glass microspheres before adding the colorant.

[0035] In a seventh aspect, the present invention provides a multi-color art paint that does not require the use of multiple color particles for color mixing, which is prepared by the above-described method for preparing multi-color art paint that does not require the use of multiple color particles.

[0036] This invention successfully prepared a castor oil-based acrylate / silica hybrid modified acrylate copolymer with an organic-inorganic covalently crosslinked network structure via a sol-gel method and a thiol-ene reaction. The inactive C=C bonds in castor oil participate in the curing process, forming covalent bonds with the silica network. The emulsion maintains good stability even after the introduction of silica. Furthermore, the silica network, acting as a reinforcing filler, significantly improves the mechanical properties and hardness of the material by substantially increasing the crosslinking density and establishing covalent bonds between the filler and the polymer.

[0037] This invention prepares an antibacterial cationic acrylate copolymer through soap-free emulsion polymerization. The cationic acrylate copolymer in the continuous phase and the nano-titanium dioxide in the modified base paint achieve lower cost and dual antibacterial effect, and have the ability to resist microbial contamination.

[0038] This invention uses a self-made emulsion with a high cross-linking density as the film-forming substance for the base paint and continuous phase, which enhances the toughness of the particles, ensures uniform distribution of the base paint particles, and prevents them from sticking when stirred. At the same time, when colorants are added later, the dispersion medium can still be maintained, ensuring the stability of the particles, maintaining the stability of the system, and guaranteeing the decorative effect and durability of the coating.

[0039] This invention simplifies the process of separately coloring and grouping color particles. Only one white paint product needs to be produced. Color can be directly mixed into the finished paint, and the paint can be applied directly after color mixing. The effect shows the effect of multi-color particles, with strong texture, good feel, certain thickness and toughness, good crack resistance and scratch resistance. The formula uses low VOC additives and odor-free film-forming substances, which are environmentally friendly.

[0040] Its outstanding advantages in production are ease of manufacturing and superior performance. It can be produced and stocked like regular latex paint; when a customer places an order, it can be directly used for color mixing without further granulation or mixing. Alternatively, it can be stored in dealer stores like regular latex paint, allowing designers or customers to mix colors on-site, achieving color mixing freedom and immediate use. Detailed Implementation

[0041] To further understand the present invention, preferred embodiments of the present invention are described below in conjunction with examples. However, it should be understood that these descriptions are only for further illustrating the features and advantages of the present invention, and not for limiting the scope of the claims of the present invention.

[0042] Unless otherwise specified, all reagents or instruments used in this invention are commercially available products.

[0043] Example 1

[0044] 1) Preparation of modified acrylate copolymers

[0045]

[0046] (2) Preparation of modified base paint

[0047]

[0048] (3) Preparation of antibacterial acrylate copolymer

[0049]

[0050] (4) Preparation of continuous phase

[0051]

[0052] (5) Preparation of protective adhesive solution

[0053]

[0054] (6) Preparation of colorful art paint

[0055]

[0056] The preparation processes for the multi-colored artistic paints in Examples 2 and 3 are the same as in Example 1, except that the modified acrylic copolymer is prepared, as detailed below:

[0057]

[0058] Note: The values ​​in the table represent the amount of material used, in parts by weight.

[0059] Comparative Example 1

[0060] The difference from Example 1 lies in the preparation of the modified acrylate copolymer. The steps for preparing the modified acrylate copolymer in Comparative Example 1 are as follows:

[0061]

[0062] Comparative Example 2

[0063] The difference from Example 1 lies in the preparation of the antibacterial acrylate copolymer. The steps for preparing the antibacterial acrylate copolymer in Comparative Example 2 are as follows:

[0064]

[0065] Comparative Example 3

[0066] The difference from Example 1 lies in the preparation of the modified base paint. The steps for preparing the modified base paint in Comparative Example 3 are as follows:

[0067]

[0068] Comparative Example 4

[0069] The difference from Example 1 lies in the preparation of the continuous phase. The steps for preparing the continuous phase in Comparative Example 4 are as follows:

[0070]

[0071] The performance of the multi-colored artistic paints prepared in Examples 1-3 and Comparative Examples 1-4 was tested. The performance test items and standards were in accordance with HG / T4343. 2024, including the anti-mold test: HG / T 3950 2007 Culture Medium Method. According to the mold species specified in the method, mold spore suspensions of each mold were prepared separately and mixed at equal concentrations. A certain concentration of the mixed spore suspension was sprayed onto the culture medium and the test samples, and then incubated at 25°C for 100 days. The area of ​​mold growth on the sample surface was observed visually and microscopically and rated.

[0072] The test results are shown in Tables 1, 2 and 3.

[0073] Table 1

[0074]

[0075] Table 2

[0076]

[0077] Table 3

[0078]

[0079] Based on the disclosure in the foregoing specification, those skilled in the art can make appropriate changes and modifications to the above embodiments. Therefore, the present invention is not limited to the specific embodiments disclosed and described above, and some modifications and changes to the present invention should also fall within the protection scope of the claims of the present invention. Furthermore, although some specific terms are used in this specification, these terms are only for convenience of explanation and do not constitute any limitation on the present invention.

Claims

1. A method for preparing a multi-colored artistic paint that does not require mixing with multiple color particles, characterized in that: Includes the following steps: Add 50-70 parts by weight of the modified base paint and 10-20 parts by weight of the continuous phase to 20-30 parts by weight of the protective colloid solution, stir at high speed to disperse to the set fine particle state, then add 1-5 parts by weight of the colorant, stir at low speed until uniform, and discharge. The modified base paint is prepared through the following steps: Weigh out the following components by weight: 40-50 parts distilled water, 20-30 parts modified acrylate copolymer, 5-10 parts 10wt% lithium magnesium silicate aqueous solution, 1-5 parts 5wt% lithium magnesium silicate aqueous solution, 10-15 parts filler, 1-5 parts nano titanium dioxide, 0.5-1.5 parts hydroxyethyl cellulose, and 1-5 parts first auxiliary agent. According to the above weight proportions, distilled water, nano titanium dioxide, filler, hydroxyethyl cellulose and the first auxiliary agent are mixed and dispersed at high speed. The pH value of the system is adjusted to 7-9. Then, modified acrylate copolymer, 5wt% magnesium lithium silicate aqueous solution and 10wt% magnesium lithium silicate aqueous solution are added in sequence and dispersed at high speed until uniform. The material is discharged to obtain the modified base paint. The hydroxyethyl cellulose is composed of HE-10k cellulose, 250HHBR cellulose and DC-600 cellulose in a mass ratio of 3:2:6; The first additive includes at least one of dispersant, defoamer, preservative, film-forming aid, and antifreeze; The filler is at least one of diatomaceous earth, bentonite, kaolin, and talc. The modified acrylate copolymer is prepared by the following steps: 50-60 parts by weight of N-hydroxyethylacrylamide, 140-160 parts by weight of castor oil, 130-140 parts by weight of tetrahydrofuran, 0.1-2 parts by weight of sodium hydroxide and 0.01-0.5 parts by weight of 2,6-dimethylphenol were placed in a reaction vessel and stirred until homogeneous. The mixture was then heated in a water bath at 40°C for 1-5 hours. After cooling, an appropriate amount of dichloromethane was added for dilution, followed by washing with saturated brine, treatment with magnesium sulfate, filtration, and vacuum drying to obtain castor oil-based vinyl monomers. 15-20 parts by weight of castor oil-based vinyl monomer, 20-30 parts by weight of methyl methacrylate, 3-8 parts by weight of butyl acrylate, 1-5 parts by weight of acrylic acid, 0.1-1 parts by weight of sodium dodecyl sulfate, 0.1-1 parts by weight of polyoxyethylene octylphenol ether-10, 0.1-1 parts by weight of ammonium persulfate, 0.1-1 parts by weight of sodium bicarbonate and 25-40 parts by weight of distilled water are placed in a reaction vessel and stirred and mixed evenly to obtain a pre-emulsion. Dissolve 0.1 to 0.5 parts by weight of ammonium persulfate in 10 parts by weight of distilled water to form an ammonium persulfate solution; 20–30 parts by weight of preemulsion, 60–80 parts by weight of distilled water, 0.1–0.5 parts by weight of sodium bicarbonate, 0.1–0.5 parts by weight of sodium dodecyl sulfate, and 0.1–0.5 parts by weight of polyoxyethylene octylphenol ether-10 were placed in a reaction vessel. The reaction vessel was heated in an 80°C water bath and stirred until homogeneous. Then, 3–8 parts by weight of ammonium persulfate solution were slowly added dropwise, followed by 50–60 parts by weight of preemulsion. Then, another 3–8 parts by weight of ammonium persulfate solution were slowly added. The mixture was stirred for 1–3 hours and cooled to room temperature. The pH was adjusted to 3.5–4, and 5–10 parts by weight of silane modifier were added. The mixture was then slowly stirred magnetically in an 80°C water bath for 1–3 hours and cooled to room temperature to obtain the modified acrylate copolymer. The continuous phase is prepared by the following steps: Weigh out 15-25 parts of distilled water, 65-75 parts of antibacterial acrylate copolymer, 0.1-0.5 parts of 250HBR cellulose, 0.1-0.5 parts of alkali-swellable thickener, and 0.1-5 parts of the second auxiliary agent according to the following weight proportions; According to the above weight proportions, distilled water, 250HBR cellulose and the second auxiliary agent are mixed and dispersed at high speed. Then, antibacterial acrylate copolymer and alkali swelling thickener are added in sequence and stirred and mixed evenly. The pH value of the system is adjusted and discharged to obtain a continuous phase. The second auxiliary agent includes at least one of the following: dispersant, wetting agent, suspending agent, film-forming aid, antifreeze agent, and defoamer; The antibacterial acrylate copolymer is prepared by the following steps: Mix 3-6 parts by weight of methyl methacrylate, 5-10 parts by weight of butyl acrylate and 1-3 parts by weight of acrylic acid until homogeneous to form a pre-emulsified solution. Dissolve 0.01 to 0.5 parts by weight of potassium persulfate in 5 to 10 parts by weight of distilled water to form a potassium persulfate solution; 40–50 parts by weight of distilled water, 1–3 parts by weight of 3-(methacrylamide)propyltrimethylammonium chloride, and 0.1–3 parts by weight of diacetone acrylamide were placed in a reaction vessel and heated to 82–85°C. Then, 10–15 parts by weight of pre-emulsified solution, 1–3 parts by weight of 2-hydroxypropyl acrylate, and 3–7 parts by weight of potassium persulfate solution were slowly added dropwise. The reaction was stirred for 0.5–1 hour. Then, 3–8 parts by weight of pre-emulsified solution, 0.1–3 parts by weight of silane coupling agent, and 2–5 parts by weight of potassium persulfate solution were slowly added. The reaction was stirred for 2–3 hours. The pH of the system was adjusted to 6.5–7.

5. Then, 0.1–1 parts by weight of adipic acid dihydrazide was added. The reaction was stirred for 1–2 hours. The mixture was cooled to room temperature and discharged to obtain an antibacterial acrylate copolymer. The protective adhesive solution is prepared by the following steps: 90-95 parts by weight of distilled water, 5-10 parts by weight of lithium magnesium silicate and 0.1-0.5 parts by weight of suspending agent are placed in a reaction vessel, dispersed at high speed until uniformly mixed, and then discharged.

2. The method for preparing multi-colored artistic paint without the need for multiple color particles as described in claim 1, characterized in that: Includes the following steps: Add 50-70 parts by weight of modified base paint, 10-20 parts by weight of continuous phase and 5-10 parts by weight of 150-200 mesh glass microspheres to 20-30 parts by weight of protective colloid solution, stir at high speed to disperse to the set fine particle state, then add 1-5 parts by weight of colorant, stir at low speed until uniform, and discharge.

3. The method for preparing multi-colored artistic paint without the need for multiple color particles as described in claim 1, characterized in that: The silane modifier is at least one of 3-mercaptopropyltrimethoxysilane, 3-mercaptopropylmethyldimethoxysilane, and 3-mercaptopropyltriethoxysilane.

4. The method for preparing multi-colored artistic paint without the need for multiple color particles as described in claim 1, characterized in that: The nano-titanium dioxide is anatase phase titanium dioxide.

5. A multi-colored artistic paint that does not require mixing with multiple color particles, characterized in that: It is prepared by the method of preparing multicolor art paint that does not require multiple color particles as described in any one of claims 1 to 4.

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