WO2022260506A1 - Rêvetements en céramique utilisés dans l'industrie de la construction avec des propriétés biocides - Google Patents

Rêvetements en céramique utilisés dans l'industrie de la construction avec des propriétés biocides Download PDF

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Publication number
WO2022260506A1
WO2022260506A1 PCT/MX2022/050046 MX2022050046W WO2022260506A1 WO 2022260506 A1 WO2022260506 A1 WO 2022260506A1 MX 2022050046 W MX2022050046 W MX 2022050046W WO 2022260506 A1 WO2022260506 A1 WO 2022260506A1
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WO
WIPO (PCT)
Prior art keywords
ceramic
layer
ceramic coating
size
enamel
Prior art date
Application number
PCT/MX2022/050046
Other languages
English (en)
Spanish (es)
Inventor
Mauricio-Esteban MENDEZ-GONZALEZ
Jenny-Lorena MORALES-CASTILLO
Fernando-Raúl BLAITT-URIBE
Fernando-Andrés AGUILERA-MORA
Arturo-Adolfo BANDA-IBARRA
Shen YANG-HSIEH
Original Assignee
Grupo Lamosa S A B De C V
Nano Quantum Group Spa
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Grupo Lamosa S A B De C V, Nano Quantum Group Spa filed Critical Grupo Lamosa S A B De C V
Publication of WO2022260506A1 publication Critical patent/WO2022260506A1/fr

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Classifications

    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
    • A01N59/00—Biocides, pest repellants or attractants, or plant growth regulators containing elements or inorganic compounds
    • A01N59/16—Heavy metals; Compounds thereof
    • A01N59/20—Copper
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C8/00—Enamels; Glazes; Fusion seal compositions being frit compositions having non-frit additions
    • C03C8/14—Glass frit mixtures having non-frit additions, e.g. opacifiers, colorants, mill-additions
    • C03C8/18—Glass frit mixtures having non-frit additions, e.g. opacifiers, colorants, mill-additions containing free metals

Definitions

  • the present invention is related to ceramic coatings or coatings, and more particularly with ceramic coatings or coatings whose surfaces have incorporated encapsulated copper nanoparticles that provide the ceramic coating or coating with biocidal properties capable of combating agents such as bacteria. , viruses, fungi and yeasts.
  • US Patent No. US9439439B2 describes a transparent glass cover for applications such as touch screen devices incorporating antimicrobial, antifungal and antiviral properties.
  • Antimicrobial glasses contain Cu or Cu20 nanoparticles on the glass surface.
  • Antimicrobial glasses may additionally have a fluorosilane or other coating on the surface to make the glasses easy to clean.
  • glass surfaces are disclosed having antibacterial or antimicrobial surfaces and a protective coating on the surface that do not inhibit the antibacterial or antimicrobial properties of the glass. The disclosure is further directed to methods of making such articles.
  • WO201 6028554 describes an improved antimicrobial product (including methods of making it) having a glass or glass-ceramic composition, a plurality of primary surfaces, and an antimicrobial structure on at least one of the primary surfaces .
  • the antimicrobial structure comprises a plurality of copper nanoparticles configured to self-passivate under lifetime conditions of the article.
  • Such antimicrobial articles may demonstrate antimicrobial efficacy as evidenced by log kill rates of 3 or greater in the EPA-approved dry test for copper-containing surfaces.
  • the protective layer of enamel incorporates copper nanoparticles with 0 valence encapsulated in a glassy material.
  • the tile has antibacterial properties that comply with ISO 22196 (Measurement of antibacterial activity in plastics and non-porous surfaces).
  • ISO 22196 Measurement of antibacterial activity in plastics and non-porous surfaces.
  • Escherichia coli ATCC 25922 Staphylococcus aureus ATCC 6538.
  • the tile has antiviral properties certified by TONA (The Ceramic Council of North America) with the ISO 21702 Standard (Measurement of antiviral activity in plastics and non-porous surfaces).
  • TONA The Ceramic Council of North America
  • ISO 21702 Standard Measurement of antiviral activity in plastics and non-porous surfaces.
  • Influenza A virus H3N2
  • SARS- CoV- 2 Human coronavirus 229E H3N2
  • SARS- CoV- 2 Human coronavirus 229E SARS- CoV- 2 Human coronavirus
  • the tile has antifungal properties certified by the INTA University of Chile, with the ISO 22196 Standard (Measurement of antibacterial activity in plastics and non-porous surfaces).
  • ISO 22196 Standard Measurement of antibacterial activity in plastics and non-porous surfaces.
  • the product being nCu encapsulated in glassy material, is highly safe for operators in all ceramic production processes.
  • the product being nCu encapsulated and/or embedded in glassy material, complies with the standards for vitrification of materials with heavy metals as an environmental solution, transforming this product into an eco-friendly one. It should be remembered that vitrification is the most secure scheme against sensitive products, and in the case of copper it is a higher level of environmental, operational, handling and control safety.
  • the capacity of copper in its metallic state and nanometric size allows its incorporation into ceramic surfaces, providing great surface capacity, generating catalysis in the enamel that allows an ionic release of copper that in very low doses provides a great biocidal capacity, this has productive advantages. , logistic, economic and environmental impact that cannot be achieved with other products.
  • a ceramic tile of the nature described above which is composed of a ceramic support, a slip layer, a base layer and a protective layer of enamel, wherein the protective layer of enamel incorporates copper nanoparticles in valence state 0 encapsulated in a glassy material.
  • bacteria Escherichia coli ATCC 25922, Staphylococcus aureus ATCC 6538
  • virus Influenza A virus (H3N2), SARS-CoV- 2 Human coronavirus 229E
  • microorganisms Aspergillus niger ATCC 16404, Candida albicans ATCC 90028 - report date 02-15.
  • the present invention relates to a ceramic coating with biocidal properties.
  • the ceramic coating of the present invention comprises: a ceramic support body, which comprises extremely compact mass material, made up of several crystalline phases immersed in a glassy matrix, mainly composed of silica derivatives.
  • a layer called engobe which comprises a semi-porous layer that precedes the application of the enamel and has different functions such as uniforming the water absorption of successive applications, isolating the color of the support, uniforming the imperfections of the support, generating adherence to the support , establish a coefficient of expansion that allows to adequately regulate the planarity of the tiles, waterproof and opaque in a way that allows to minimize the effect of water stains resulting from the absorption of water from the support.
  • the slip layer has a typical thickness of 67 microns and is made up of alkali or alkaline earth metal aluminosilicates and zirconium silicate mainly; a layer called base or enamel which comprises a vitreous coating, on the support, the result of the fusion of powdered oxides through a heating process.
  • a layer called base or enamel which comprises a vitreous coating, on the support, the result of the fusion of powdered oxides through a heating process.
  • Its objective is to adapt the product to its intended use and provide certain aesthetic qualities.
  • the suitability of the product for use is related to the improvement of the surface properties provided by the glazed coating, such as impermeability, mechanical, chemical, optical, thermal properties, etc.
  • the enamels constitute an artistic expression where they combine a graphic, with elements of color, shapes and textures.
  • the base layer or enamel has a typical thickness of 67 microns and is made up of Alkaline or alkaline earth metal aluminosilicates which melt at temperatures higher than 1000°C to obtain the desired final finish.
  • a protective layer which comprises a layer of enamel applied to the surface of the base layer or enamel, and generates greater protection, avoiding the appearance of surface defects.
  • the ceramic coating is characterized in that: the protective layer has a thickness of between 6 to 200 microns, preferably 13 microns and contains copper nanoparticles in a 0 valence state, encapsulated in a glassy material, with a size of between 20 to 40nm preferred 25nm where the size distribution of the particle size shows a trend of values with a mean of 35nm with a standard deviation of 0.8nm, in an amount between 0.1 to 1,000RRM per m 2 ; homogeneously incorporated into the glassy material under a process of homogenization, casting and grinding.
  • the ceramic coating has the following certifications:
  • the present invention relates to a method for making a ceramic coating with biocidal properties, wherein the ceramic coating comprises a supporting ceramic body; A layer called enamel that consists of a vitreous layer that defines the functional and decorative properties of the ceramic coating; a layer called engobe which allows a good bond between the enamel and the ceramic body, and a protective layer which comprises a layer of enamel applied to the surface of the base layer or enamel, wherein said method comprises adding to the layer protective copper nanoparticles with 0 valence encapsulated in a glassy material, with a size between 20 to 40nm, preferably 25nm in an amount between 0.1 to 1,000PPM per m 2 during the enameling process, in the drop application thread inside of any known ceramic tile production process.
  • the size distribution of the size of the nanoparticles shows a trend of values with a mean of 35nm with a standard deviation of 0.8nm.
  • the nCu used is Cu in the metallic state, being eminently Cu°, which gives it the mechanical properties of Cu malleability, positive zeta potential collaborating with the interaction in SiO-type matrices, generating a synergy between the materials.
  • nCu is smaller than 50 nm in size (range of polyaggregated particles from 20 to 40 nm). Its interaction with silicates of average sizes of MESH 100 (approximately 150 microns), makes each silicate have interactions with several nCu at the same time.
  • the mechanism of viral inactivation on copper surfaces is complex and involves not only the direct action of the copper ion on multiple targets, but also the generation of destructive oxygen radicals, resulting in "metabolic suicide". These reactions they generate the enzymatic peroxidation of the envelope, damage of the membrane proteins and the nucleoproteins of the virus through hydroxyls. You do not need light to activate this mechanism.
  • nCu copper nanoparticles
  • the copper nanoparticles (nCu) in vitreous silicate material for ceramics produced were mixed, homogenized with the glaze material of the protective layer in a concentration lower than 1,000RRM per m 2 (standardized concentration).
  • enamels may have other additives such as pigments, metals as they are used in the industry
  • antiviral activity tests were carried out, following ISO 22196 standards, with the following viruses: Haemophilus influenza H1 N1 at 24 hours; and Coronavirus SARSII at 24 hours. In all of them it was observed that the ceramic with nanoparticles eliminates over 99.9% in relation to the “White” ceramic.
  • the ceramic coating and method for its production of the present invention is not limited to the modality described above and that experts in the field will be enabled, by the teachings established herein, to make changes in the ceramic coating and method for its production of the present invention, the scope of which will be established exclusively by the following claims.

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  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Agronomy & Crop Science (AREA)
  • Inorganic Chemistry (AREA)
  • Pest Control & Pesticides (AREA)
  • Plant Pathology (AREA)
  • Health & Medical Sciences (AREA)
  • Dentistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Zoology (AREA)
  • Environmental Sciences (AREA)
  • Agricultural Chemicals And Associated Chemicals (AREA)

Abstract

Dans un premier aspect, la présente invention concerne un revêtement ou un recouvrement en céramique avec des propriétés biocides et dans un second aspect, la présente invention concerne un procédé destiné à élaborer un recouvrement en céramique avec des propriétés biocides.
PCT/MX2022/050046 2021-06-10 2022-06-09 Rêvetements en céramique utilisés dans l'industrie de la construction avec des propriétés biocides WO2022260506A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US202163202420P 2021-06-10 2021-06-10
US63/202,420 2021-06-10

Publications (1)

Publication Number Publication Date
WO2022260506A1 true WO2022260506A1 (fr) 2022-12-15

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ID=84425363

Family Applications (1)

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PCT/MX2022/050046 WO2022260506A1 (fr) 2021-06-10 2022-06-09 Rêvetements en céramique utilisés dans l'industrie de la construction avec des propriétés biocides

Country Status (2)

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AR (1) AR126132A1 (fr)
WO (1) WO2022260506A1 (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012138439A2 (fr) * 2011-04-04 2012-10-11 Lockheed Martin Corporation Articles contenant des nanoparticules de cuivre et leurs procédés de production et d'utilisation
WO2013128302A1 (fr) * 2012-02-27 2013-09-06 Accord Comunicaciones Ltda. Procédé de fabrication d'articles en céramique dotés de propriétés antifongiques, antibactériennes et antimicrobiennes, et articles en céramique
WO2014085379A1 (fr) * 2012-11-30 2014-06-05 Corning Incorporated Revêtement antimicrobien de fritte de verre
WO2020183204A1 (fr) * 2019-03-14 2020-09-17 Pilkington Technology Management Limited Revêtement antimicrobien
WO2020248084A1 (fr) * 2019-06-11 2020-12-17 Aguilar Cartagena Christian Marcel Processus de transformation de matériau vitré antimicrobien

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012138439A2 (fr) * 2011-04-04 2012-10-11 Lockheed Martin Corporation Articles contenant des nanoparticules de cuivre et leurs procédés de production et d'utilisation
WO2013128302A1 (fr) * 2012-02-27 2013-09-06 Accord Comunicaciones Ltda. Procédé de fabrication d'articles en céramique dotés de propriétés antifongiques, antibactériennes et antimicrobiennes, et articles en céramique
WO2014085379A1 (fr) * 2012-11-30 2014-06-05 Corning Incorporated Revêtement antimicrobien de fritte de verre
WO2020183204A1 (fr) * 2019-03-14 2020-09-17 Pilkington Technology Management Limited Revêtement antimicrobien
WO2020248084A1 (fr) * 2019-06-11 2020-12-17 Aguilar Cartagena Christian Marcel Processus de transformation de matériau vitré antimicrobien

Also Published As

Publication number Publication date
AR126132A1 (es) 2023-09-13

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