Antibacterial coated object, antibacterial paint, method for producing antibacterial paint, and method for producing antibacterial coated object
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An antibacterial coating and coating technology, applied in antifouling/underwater coatings, polyurea/polyurethane coatings, devices for coating liquids on surfaces, etc. question
Pending Publication Date: 2021-03-02
KUBOI COATING WORKS CO LTD
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However, there is no disclosure of the dispersed particle size in the paint containing the bactericide (ceramic particles bonded with metal particles) and the antibacterial activity value of the paint film.
Method used
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preparation example Construction
[0073] (Preparation of ceramic composite powder)
[0074] The ceramic composite powder can be prepared by a known method, or a commercially available one can be used.
[0075] As the preparation method of the ceramic composite powder, for example, one or more selected from the following methods can be enumerated, that is, the aforementioned photocatalyst components in powder and / or dispersion liquid, the aforementioned adsorption of powder and / or dispersion liquid The method of mixing the above-mentioned metal components in powder form and / or dispersion liquid form, adjusting the temperature and / or pressure as needed, and using various mixing devices as needed to compound the components, but not particularly limited.
[0076] Examples of various mixing devices include paint shakers, butterfly mixers, planetary mixers, pony mixers, dissolvers, tank mixers, Mixers such as homo mixer, homo disper, attritor, roller mill, sand mill, ball mill, bead mill, line mill, ultrasonic mill...
Embodiment 1
[0174] 2.85% by mass of photocatalyst titanium dioxide, hydroxyapatite and silver compounded ceramic composite powder, 14.29% by mass of adhesives comprising hydroxyl-containing acrylic resin (acrylic polyol) and polyisocyanate curing agent, ethyl acetate The ester (solvent) was blended in an amount (remainder) of 100% by mass as a whole, and dispersed with a bead mill to prepare an antimicrobial coating.
Embodiment 2、3
[0176] An antimicrobial coating was prepared in the same manner as in Example 1, except that the operating conditions when dispersing each component using a bead mill were changed.
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Abstract
The objective of the present invention is to provide: an antibacterial coated object having an antibacterial activity value (based on JIS Z 2801: 2010) of a coating film of at least 2.0; an antibacterial paint; a method for producing an antibacterial paint; and a method for producing an antibacterial coated object. To achieve the objective, provided is an antibacterial coated object which has, ona substrate, a coating film of an antibacterial paint comprising at least: a ceramic composite powder including a photocatalyst component, an adsorbent component, and a metal component; and a binder,wherein the antibacterial activity value (based on JIS Z 2801: 2010) of a coating film is at least 2.0, and both or either of the following requirements (1) and (2) are/is satisfied. (1) With respectto the ceramic composite powder in the antibacterial paint, the volume-average dispersed particle diameter (D50) is at most 250 nm, and the ratio D90/D50 of the 90%-cumulative volume particle diameter(D90) to the volume-average dispersed particle diameter (D50) is at most 1.5, and (2) the film thickness of the coating film is at most 80 [mu]m, and the haze (based on JIS K 7136: 2000) of the antibacterial coated object or the coating film is at most 25.
Description
technical field [0001] The present invention relates to an antibacterial coating with an antibacterial activity value (according to Japanese Industrial Standard JIS Z 2801:2010) of 2.0 or more, an antibacterial coating, a method for producing an antibacterial coating, and a method for producing an antibacterial coating. Background technique [0002] In recent years, in medical institutions, commercial facilities, schools, public facilities, food factories, transportation facilities, etc., from the viewpoint of hygiene such as preventing the occurrence and spread of infectious diseases, handrails, operation buttons, etc. are provided and are touched by an unspecified large number of people. The demand for antibacterial performance is increasing for items such as portable communication terminals, keyboards, mice, touch screens, etc. that are directly touched by fingers. [0003] Various techniques for imparting general-standard antibacterial performance that can suppress the i...
Claims
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Application Information
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