Art pigment using antibacterial and mildew-proof bentonite and preparation method thereof

Abstract

A novel antibacterial and antifungal bentonite-based art pigment is characterized by its raw materials comprising bentonite, pyridine sulfide copper zinc, chlorobenzene dry ether, and pigment in weight proportions of 25-30, 20-30, and 20-30, respectively. The bentonite is obtained by mixing and reacting raw bentonite ore with quaternary ammonium salts. This technology effectively controls the degradation defects of each active ingredient, thus providing storage stability for the art pigment; it effectively solves the problem of irritation to the human body caused by traditional anti-corrosion and antifungal systems; it is simpler to add during use; there is no discharge of waste gas, wastewater, or solid waste during the entire production process, making it an environmentally friendly product with high production efficiency; there is no particle or clumping during use, and the pigment is easy to spread when mixed; finished artworks are less prone to cracking.

Description

Technical Field

[0001] This invention relates to the field of art pigments, specifically to an art pigment using antibacterial and antifungal bentonite and its preparation method. Background Technology

[0002] The main problems with the preservation and mildew prevention of art pigments are as follows:

[0003] 1. Traditional preservatives and mildew inhibitors degrade relatively quickly, resulting in insufficient stability and failure in preservative and mildew prevention;

[0004] 2. Some traditional preservatives and mildew inhibitors contain formaldehyde and other releases that have a significant impact on the environment and do not meet environmental protection requirements;

[0005] 3. Traditional preservatives and mildew inhibitors are generally highly irritating to the human body, frequently causing skin allergies and other problems during use. With the continuous improvement of living standards in my country, more and more children are receiving art education at increasingly younger ages, thus creating an urgent need for new products with milder irritants.

[0006] 4. Art paints may clump or form particles during use, making them difficult to spread when mixing.

[0007] 5. Finished artworks are prone to cracking. Summary of the Invention

[0008] In view of the problems of insufficient stability, lack of environmental protection, high irritation, and poor user experience for painters in the existing technology, the present invention provides an art pigment using antibacterial and mildew-resistant bentonite.

[0009] The technical solution of the present invention is as follows:

[0010] An art pigment utilizing antibacterial and mildew-resistant bentonite, characterized in that the raw materials include color powder and bentonite, pyridine sulfide copper zinc, and chlorophenyl ether in parts by weight of 20-30, 20-30, and 20-30 respectively, wherein the bentonite is obtained by mixing and reacting bentonite ore and quaternary ammonium salt.

[0011] Preferably, it also includes 1-3 parts by weight of dodecyl dimethyl benzyl ammonium chloride.

[0012] Preferably, it also includes 10-20 parts by weight of zinc oxide.

[0013] More preferably, the zinc oxide is nano zinc oxide.

[0014] Preferably, the mass ratio of the bentonite ore to the quaternary ammonium salt is 10:1 to 12:1.

[0015] Preferably, the quaternary ammonium salt is dodecyl dimethyl benzyl ammonium chloride.

[0016] The aforementioned method for preparing art pigments using antibacterial and antifungal bentonite is characterized by comprising the following steps:

[0017] (1) React the bentonite ore and quaternary ammonium salt at 60-80℃ for 6-10 hours and then dry them;

[0018] (2) Add the product obtained in step (1) and other raw materials into a mixing tank and mix thoroughly to obtain the product.

[0019] The beneficial technical effects of the present invention are as follows:

[0020] This invention uses high-purity bentonite as the main raw material, quaternary ammonium salt as the modifying material, and then mixes it thoroughly with pyridine sulfide copper zinc, chlorophenyl ether, etc. in a reasonable combination. The color is provided by separately added color powder, and the proportion of color powder is determined by the specific color requirement.

[0021] Specifically,

[0022] 1. This invention effectively controls the degradation defects of each active ingredient, thereby providing storage stability for art nutrients.

[0023] Quaternary ammonium salts are used to modify bentonite. The main mechanism is that the quaternary ammonium salt cations enter the interlayer space of bentonite, increasing the interlayer spacing and improving hydrophobicity, thereby enhancing the bentonite's ability to remove organic matter. Cross-linked bentonite has adjustable pore size, uniform distribution, and good adsorption performance. It also improves the antimicrobial properties of bentonite.

[0024] The bentonite structure is a 2:1 crystal structure consisting of two silicon-oxygen tetrahedra sandwiching a layer of aluminum-oxygen octahedrons. The CH bonds between the layers are bridged by hydrogen bonds, which causes the layers to expand and disperse, forming a thixotropic gel that prevents pigments and fillers from settling, while providing a smooth brushstroke effect during the painting process.

[0025] Quaternary ammonium salts also possess bactericidal properties. This is because the positive charge of the quaternary ammonium salt binds to the negatively charged genes on the cell wall of microorganisms, disrupting the cell wall and leading to lysis and cell death. Quaternary ammonium salts can also denature proteins, causing cell death, and can disrupt the semi-permeability of the cell membrane, reducing the intake of nutrients necessary for cell life. Therefore, bentonite modified with quaternary ammonium salts exhibits certain antibiological properties and reduces degradation defects.

[0026] 2. This invention effectively solves the problem of irritation to the human body caused by traditional preservative and antifungal systems. Traditional preservatives are mostly isothiazolinone active ingredients (such as 5-chloro-2-methyl-4-isothiazolin-3-one, 2-methyl-4-isothiazolin-3-one, 1,2-benzisothiazolin-3-one, etc.), which are highly sensitizing to the skin, causing redness, swelling, blisters, and even ulceration after burns. The chlorphenesin-related formulation used in this invention is an antigen-associated immunosuppressant that inhibits IgE-mediated histamine release. Chlorphenesin is also an antifungal drug, suitable for fighting fungi and bacteria. It can effectively resist Gram-positive and Gram-negative bacteria, especially showing strong bactericidal activity against Aspergillus niger IM1149007 and Penicillium pinniphilum IM187160 (fungi), and also has a good inhibitory effect on Candida albicans NCPF3179 and Saccharomyces cerevisiae NCPF3275 (yeast). It has low skin irritation and good compatibility with pigments.

[0027] 3. This invention is simpler to add during use.

[0028] 4. This invention produces no waste during the entire production process, making it an environmentally friendly product with high production efficiency.

[0029] 5. No particles or lumps are observed during use, and it is easy to spread when mixing pigments.

[0030] 6. Finished artworks are less prone to cracking. Detailed Implementation

[0031] To better understand the content of this invention, specific embodiments will be described in detail.

[0032] Examples 1-8

[0033] The following is a formula for an art pigment using antibacterial and antifungal bentonite, as described in Examples 1-8:

[0034]

[0035] In Examples 1-4, the mass ratio of bentonite ore to quaternary ammonium salt in bentonite was 10:1; in Examples 5-8...

[0036] The ratio is 12:1.

[0037] The preparation methods for each embodiment are as follows:

[0038] First, the bentonite ore and quaternary ammonium salt are reacted at 70°C for 8 hours and then dried. Next, the dried bentonite, dodecyl dimethyl benzyl ammonium chloride, nano zinc oxide, chlorophenoxyacetic acid, and pyridine copper zinc sulfate are added to a mixing tank in the above proportions, stirred thoroughly until homogeneous, and then the color powder is evenly mixed in to obtain the product.

[0039] The testing methods and results are as follows:

[0040] Test samples for each embodiment were prepared and surface-inoculated with a standard fungal suspension. The surface-inoculated samples were incubated under ideal fungal growth conditions, and any resulting surface fungal growth was visually assessed according to the rating scale described in the results table. In the absence of visible surface growth, the presence of viable fungal spores could be determined by thoroughly mixing the sample and inoculating the stripes onto an appropriate agar plate. These growths or the absence of growth were evaluated after incubation under specified conditions.

[0041] The mold is:

[0042] Aspergillus oryzae; Cladosporium cladosporoides; Geotrichum candidum; Paecilomyces variotif; Penicillium ochrochloron

[0043] Table 1 Mold Growth Levels

[0044]

[0045] As can be seen from the table above, the final rating is 0 = no growth.

[0046] Growth rating criteria:

[0047] Grade Description (Growth Area)

[0048] 0 No mold growth

[0049] 1. Mold growth covers less than 10% of the area.

[0050] 2. Mold growth coverage area: 10-29%

[0051] 3. Mold growth covers an area of ​​30-59%.

[0052] 4. Mold growth covers an area greater than 60-100%.

[0053] In actual use, there are no particles or lumps, and it is easy to spread when mixing paints, providing a good feel when mixing colors and applying the brush.

[0054] The above description is merely a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations in the size of the cap or the size and number of longitudinal tear lines that can be easily conceived by those skilled in the art within the scope of the technology disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. An art pigment utilizing antibacterial and antifungal bentonite, characterized in that... The raw materials include color powder and bentonite, pyridine sulfide copper zinc, and chlorophenyl ether in 20-30, 20-30, and 20-30 parts by mass, respectively. The bentonite is obtained by mixing and reacting bentonite ore and quaternary ammonium salt, and the mass ratio of bentonite ore to quaternary ammonium salt is 10:1 to 12:

1. It also includes 1-3 parts by weight of dodecyl dimethyl benzyl ammonium chloride; It also includes 10-20 parts by weight of zinc oxide, wherein the zinc oxide is nano zinc oxide.

2. The art pigment according to claim 1, characterized in that... The quaternary ammonium salt is dodecyl dimethyl benzyl ammonium chloride.

3. A method for preparing an art pigment using antibacterial and antifungal bentonite as described in any one of claims 1-2, characterized in that... Includes the following steps: (1) After reacting the bentonite ore and quaternary ammonium salt at 60-80℃ for 6-10 hours, dry them; (2) Add the product obtained in step (1) and other raw materials into a mixing tank and mix thoroughly to obtain the product.

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