WO2019060974A1 - Composition for a reflective, thermal, photocatalytic film - Google Patents

Composition for a reflective, thermal, photocatalytic film Download PDF

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Publication number
WO2019060974A1
WO2019060974A1 PCT/BR2018/050357 BR2018050357W WO2019060974A1 WO 2019060974 A1 WO2019060974 A1 WO 2019060974A1 BR 2018050357 W BR2018050357 W BR 2018050357W WO 2019060974 A1 WO2019060974 A1 WO 2019060974A1
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thermal
photocatalytic
water
reflective film
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PCT/BR2018/050357
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French (fr)
Portuguese (pt)
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Marcos ROHDEN
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Rohden Marcos
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    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
    • C08K3/20—Oxides; Hydroxides
    • C08K3/22—Oxides; Hydroxides of metals
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
    • C09D5/02—Emulsion paints including aerosols
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
    • C09D5/14—Paints containing biocides, e.g. fungicides, insecticides or pesticides

Definitions

  • the present application relates to a thermal and photocatalytic reflective film composition, which results in a product to be applied as a film on surfaces such as walls, floors, roofs or roofs, with protective characteristics that enable the reflection of practically the whole the infrared energy emitted by the sun and consequently significantly increases its photoactivity.
  • a thermal and photocatalytic reflective film composition which results in a product to be applied as a film on surfaces such as walls, floors, roofs or roofs, with protective characteristics that enable the reflection of practically the whole the infrared energy emitted by the sun and consequently significantly increases its photoactivity.
  • Such film can be used as coating on roofs, roofs, walls, of different types of material, as well as may contain pigmentation, of different colors, also exerting the ink paper.
  • the subject of the present patent application describes a composition, which results in a homogeneous, monocomponent, innocuous and stable film, producing no gases or deleterious reactions of any kind in any temperature, humidity and pH range; which reflects the entire visible and invisible light spectrum and which, when applied, acts as protection, and among all the benefits expected by a protective film, also bring the benefits of photocatalysis, such as the high cleaning characteristic, keeping the surface always clean , as well as the potentiation of the efficiency in the realization of artificial photosynthesis of this film due to its composition, providing and contributing to air purification and elimination of bacteria, viruses and fungi by oxidation.
  • This composition is characterized in that it has in specific proportional ranges of elastomeric resins associated with specific ranges of mineral fillers, protective agents, pigments, rheological additives and a specific range of nanoparticles of titanium dioxide doped with tungsten oxide WO3.
  • This film can be designed so that it can be applied by conventional means such as brush, brush, roller, spray or by immersion, facilitating the application in finished structures (cellars, sheds, silos, buildings, gymnasiums, floors and sidewalks), where it is necessary to reduce the thermal absorption, the characteristic of being self - cleaning and controlling the growth of bacteria, viruses and fungi, as in domestic environments, food production, hospitals and laboratories, as well as.
  • conventional means such as brush, brush, roller, spray or by immersion, facilitating the application in finished structures (cellars, sheds, silos, buildings, gymnasiums, floors and sidewalks), where it is necessary to reduce the thermal absorption, the characteristic of being self - cleaning and controlling the growth of bacteria, viruses and fungi, as in domestic environments, food production, hospitals and laboratories, as well as.
  • the film which is the subject of this application, consists of nano-sized materials, whose structure reflects up to 95% of the infrared energy, doubling the photoactivity, as it acts in the reflection of the radii causing the heating, corresponding to 52% of the solar energy.
  • the high reflectivity of the film-forming nanoparticles in the bands covered by the visible spectrum and the infrared spectrum returns out of the atmosphere almost the entire incident light energy; this causes that the heating of the objects by absorption is avoided and indirectly by radiation or conduction, since the surfaces remain cold, near the temperature of the air.
  • compositions Another feature of the composition is the process of air purification and the elimination of bacteria, viruses and fungi by oxidation.
  • the scientific community has been studying the effect of heterogeneous photocatalysis on bacteria, viruses, fungi, mosses and bryophytes, and all of them came to prove the usability of this characteristic in the sterilization of aquatic and aerial environments with the heterogeneous photocatalysis process.
  • the decomposition of water by photocatalysis results in the production of singlet oxygen and several species of radicals, which act in the decomposition of organic matter and the accelerated elimination of contaminants of several species, without the appearance of viral or bacterial resistance.
  • toxic gases such as NOx, NHx, SOx, H2S are converted to harmless or totally decomposed formations.
  • TiO 2 when doped with tungsten trioxides, WO 3, and treated at a given temperature range are shown to be more efficient in photoactivity when compared to TiO 2 alone or other analogous compounds.
  • the doping of the TiO 2 nanofibers with tungsten for the application in nanofilms of TiO 2 aims to promote the excitation of TiO 2 under visible light and consequently solar radiation, thus increasing its photocatalytic capacity, for application in the degradation of organic pollutants.
  • the hydroxyl radical a strong oxidizing agent, attacks the contaminant present or near the surface of TiO 2 due to its short life time, according to the reactions
  • composition presented here comprises high performance characteristics with regard to photocatalysis.
  • composition results in an active acrylic or vinyl film based on nanoparticles of titanium dioxide doped with tungsten trioxide in combination with water-based solvents, thickeners and binders which, when illuminated by sunlight or by light artificial light, among other effects of photocatalysis, creates an antimicrobial and self-cleaning surfaces, which prevents the fixing of dirt and / or microorganisms, allowing the substrate to always have a cleaning aspect, reducing the need to use water, detergents or mechanical cleaning processes.
  • This film depending on its bacteriostatic, antifungal and antiviral capacity, can be applied in various critical environments, from floors or floors, to coverings, walls, etc.
  • the film, formed from the composition is formed from a talc-based water-based acrylic resin, synthetic or enamel base, the water being in the range of 20% to 35%, preferably in the range of 25% to 30% by the solvent medium of the composition. It comprises eosastomeric resin in the range of 35% to 45%, being preferably in the range of 38% to 42%. And the mineral fillers, preferably calcium carbonate and dolomite in the range of 20% to 30%, preferably in the range of 15%.
  • Said composition may comprise pigments of 10 to 20%; said pigments may be organic and / or inorganic. And further thickening, alkalizing, anti-settling rheological additives in the range of 0.01 to 3% are added in the composition.
  • the film obtained can be applied to different types of coverings, floors and walls, of metal, fibro-cement, ceramics, concrete, asphalt composition, with the purpose of reducing the absorption of heat in the materials where it is applied in about 40%.
  • the obtained film can be applied in liquid form, which after curing forms a flexible film, firmly attached to the substrate, resistant to water and weak solvents, which due to its composition produces photocatalysis reaction using the UV spectrum (between 80 and 390 nanometers), part of the visible spectrum (up to 780 nm) and InfraRed near (NIR) and InfraRed, up to 2700 nm, which decomposes the water molecules present in the air or in organic materials that, when they come in contact with the surface metallic particles, degrade, generating singlet and / or triplet oxygen, superoxide anion radical in addition to several hydroxyl radicals, without the use of any extra form of energy.
  • UV spectrum between 80 and 390 nanometers
  • part of the visible spectrum up to 780 nm
  • InfraRed near (NIR) and InfraRed up to 2700 nm
  • This film also results in the reduction of the temperature in the surroundings, causing an environmental improvement, eliminating the "islands of heat".
  • This feature opens up great options for application in any activity where heat is undesirable, such as sports areas, gymnasiums, gyms, show houses, cinemas, shopping centers, commercial or residential buildings, workshops, industries, warehouses, silos and warehouses, poultry breeding, egg production, swine, beef cattle or dairy production, where the costs for air conditioning can be reduced and thermal comfort, animal welfare and preservation of the quality of the crops and seeds can be provided.

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  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Organic Chemistry (AREA)
  • Wood Science & Technology (AREA)
  • Materials Engineering (AREA)
  • Engineering & Computer Science (AREA)
  • Medicinal Chemistry (AREA)
  • Dispersion Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Plant Pathology (AREA)
  • Paints Or Removers (AREA)
  • Catalysts (AREA)

Abstract

Monolayer solution or emulsion of one or more polymers, containing acryl or vinyl polymers, dissolved in water, with the addition of photocatalytic nanoparticulate materials, producing, by a conventional process, an active acryl or vinyl film based on metal nanoparticles in combination with solvents, thickening agents and water-based binders, which has good adherence to the substrate, is resistant to water and weak solvents, and which, due to its composition, comprising TiO2 nanoparticles doped with WO3, when illuminated by sunlight or artificial visible light, produces a photocatalysis reaction using the UV spectrum, part of the visible spectrum and the near infra-red (NIR) spectrum and infra red, up to 2700 nm, which decomposes the water molecules present in the air or in organic materials, which, upon coming into contact with the surface metal particles, are degraded, generating singlet and/or triplet oxygen, a superoxide anion radical, as well as several hydroxyl radicals.

Description

COMPOSIÇÃO DE PELÍCULA REFLETIVA TÉRMICA E FOTOCATALÍTICA  COMPOSITION OF THERMAL AND PHOTOCATALITIC REFLECTIVE FILM
[001 ] O presente pedido refere-se a uma composição de película refletiva térmica e fotocatalítica, a qual resulta num produto para ser aplicado como película em superfícies como paredes, pisos, coberturas ou telhados, com características protetivas que viabiliza a reflexão de praticamente toda a energia infravermelha emitida pelo sol e consequentemente aumenta significativamente a sua fotoatividade. Dita película pode ser utilizada como revestimento em coberturas, telhados, paredes, de diferentes tipos de material, bem como pode conter pigmentação, de diferentes cores, exercendo também o papel de tinta. The present application relates to a thermal and photocatalytic reflective film composition, which results in a product to be applied as a film on surfaces such as walls, floors, roofs or roofs, with protective characteristics that enable the reflection of practically the whole the infrared energy emitted by the sun and consequently significantly increases its photoactivity. Such film can be used as coating on roofs, roofs, walls, of different types of material, as well as may contain pigmentation, of different colors, also exerting the ink paper.
[002] Existem diversas membranas sólidas com características de redução do calor por reflexão da luz solar ou por barreira física, onde são empregados diversos materiais e técnicas para bloquear a passagem de calor e o aquecimento do substrato. A grande maioria empregam microesferas de vidro, outras utilizam folhas reflexivas de polímeros, e também existem películas espessas de materiais isolantes térmico, como o polietileno expandido, vermiculita, lã de rocha etc, colocadas entre folhas de alumínio ou aluzinco, que atuam como barreiras térmicas ou espelhos, para a luz solar (papel alumínio, p.ex.).  There are several solid membranes having heat reduction characteristics by reflection from sunlight or by physical barrier, where various materials and techniques are employed to block the passage of heat and the heating of the substrate. Most use glass microspheres, others use reflective sheets of polymers, and there are also thick films of thermal insulation materials, such as expanded polyethylene, vermiculite, rock wool etc., placed between aluminum or aluzinco sheets, which act as thermal barriers or mirrors, to sunlight (aluminum foil, for example).
[003] Os processos de aplicação destes tipos de produtos já existentes, via de regra, exigem alterações estruturais ou causam aumento de peso sobre a estrutura. As camadas muito espessas acabam acumulando poeira, micro-algas, fungos e briófitas, que a curto prazo comprometem o resultado esperado, além de exigirem técnicas que não são compatíveis com o modelo de uso proposto, que é a aplicação no ambiente em plena atividade, com animais, plantas, sementes e equipamentos ao redor.  [003] The processes of application of these types of already existing products, as a rule, require structural changes or cause weight gain on the structure. The very thick layers end up accumulating dust, micro-algae, fungi and bryophytes, which in the short term compromise the expected result, besides requiring techniques that are not compatible with the proposed use model, which is the application in the environment in full activity, with animals, plants, seeds and equipment around.
[004] Em relação as tintas térmicas, a maioria delas refletem apenas a luz visível entre 390 e 750nm, que corresponde a apenas 43% do espectro solar. Cerca de 5% são raios UV e 52% são a parte invisível do espectro ótico, começando em 770nm (near infra red), passando pelo Infra vermelho e alcançando os 3000nm (far infra red). Esta parte, composta de fótons de baixa energia são absorvidas pelos materiais e produzem calor na maioria das superfícies. Boa parte desta energia é absorvida pelo vapor d'água em nossa atmosfera. A energia que consegue ultrapassar esta barreira, alcança o solo e aquece todos os objetos. [004] In relation to thermal inks, most reflect only visible light between 390 and 750 nm, which corresponds to only 43% of the solar spectrum. About 5% are UV rays and 52% are the invisible part of the optical spectrum, starting at 770nm (near infra red), passing through Infra red and reaching 3000nm (far infra red). This part, composed of low energy photons are absorbed by the materials and produce heat on most surfaces. Much of this energy is absorbed by water vapor in our atmosphere. The energy that can overcome this barrier reaches the ground and heats all objects.
[005] Alguns documentos de patentes consultados e que buscam resultados similares seguem uma rota diferente de desenvolvimento e tecnologia, muitas delas são bi-componentes e/ou aplicadas por processos térmicos em temperaturas elevadas. Podemos citar o documento US20120260819, onde o inventor apresenta um isolante térmico alegando ser uma película reflexiva, os materiais da fórmula demonstram isto.  [005] Some patent documents consulted and pursuing similar results follow a different development and technology route, many of which are bi-component and / or heat applied at high temperatures. We may cite US20120260819, wherein the inventor has a thermal insulation claiming to be a reflective film, the materials of the formula demonstrate this.
[006] Outras soluções já conhecidas apresentam efeitos positivos na reflectância ou baixa absorbância da luz solar, utilizam isolantes térmicos, como esferas de vidro, dolomita, vermiculita, óxido de alumínio e cinza vulcânica, lã de rocha, óxido de titânio e/ou zircônio.  [006] Other known solutions have positive effects on reflectance or low absorbance of sunlight, use thermal insulation such as glass beads, dolomite, vermiculite, aluminum oxide and volcanic ash, rock wool, titanium oxide and / or zirconium .
[007] Alguns problemas que podem ser elencados está no fato de que a maioria destes produtos não refletem todo o espectro luminoso, incluindo o visível e o invisível da luz solar, associando também à uma solução de alta performance para realização de um processo de purificação do ar e a eliminação de bactérias, vírus e fungos por meio da oxidação, apresentando, dentre outras características também a de ser autolimpante.  [007] Some problems that may be listed are that most of these products do not reflect the entire spectrum of light, including the visible and invisible from sunlight, and also associate with a high performance solution for performing a purification process of the air and the elimination of bacteria, viruses and fungi through the oxidation, presenting, among other characteristics also the one of being self-cleaning.
[008] O objeto do presente pedido de patente descreve uma composição, que busca como resultado uma película homogénea, monocomponente, inócua e estável, não produzindo gases ou reações deletérias de nenhuma espécie em qualquer faixa de temperatura, umidade e pH; que reflita todo o espectro luminoso, visível e invisível, e que quando aplicada atue como proteção, e que dentre todos os benefícios esperados por uma película protetiva, traga também consigo os benefícios da fotocatálise, como a característica alto limpante, mantendo a superfície sempre limpa, bem como a potencialização da eficiência na realização da fotossíntese artificial desta película devido sua composição, provendo e contribuindo para purificação do ar e a eliminação de bactérias, vírus e fungos por oxidação.  The subject of the present patent application describes a composition, which results in a homogeneous, monocomponent, innocuous and stable film, producing no gases or deleterious reactions of any kind in any temperature, humidity and pH range; which reflects the entire visible and invisible light spectrum and which, when applied, acts as protection, and among all the benefits expected by a protective film, also bring the benefits of photocatalysis, such as the high cleaning characteristic, keeping the surface always clean , as well as the potentiation of the efficiency in the realization of artificial photosynthesis of this film due to its composition, providing and contributing to air purification and elimination of bacteria, viruses and fungi by oxidation.
[009] Dita composição está caracterizada no fato de possuir em faixas proporcionais específicas de resinas elastoméricas, associadas a faixas específicas de cargas minerais, agentes protetivos, pigmentos, aditivos reológicos e uma faixa específica de nanopartículas de dióxido de titânio dopado com óxido de tungsténio WO3. This composition is characterized in that it has in specific proportional ranges of elastomeric resins associated with specific ranges of mineral fillers, protective agents, pigments, rheological additives and a specific range of nanoparticles of titanium dioxide doped with tungsten oxide WO3.
[010] Dita película pode foi pensada de modo a poder ser aplicada por meios convencionais, como pincel, trincha, rolo, spray ou por imersão, facilitando a aplicação em estruturas prontas, (paióis, galpões, silos, edifícios, ginásios, muros, pisos diversos e calçadas), onde se tiver a necessidade da redução da absorção térmica, a característica de ser autolimpante e o controle do crescimento de bactérias, vírus e fungos, como em ambientes domésticos, produção de alimentos, hospitais e laboratórios, bem como.  [010] This film can be designed so that it can be applied by conventional means such as brush, brush, roller, spray or by immersion, facilitating the application in finished structures (cellars, sheds, silos, buildings, gymnasiums, floors and sidewalks), where it is necessary to reduce the thermal absorption, the characteristic of being self - cleaning and controlling the growth of bacteria, viruses and fungi, as in domestic environments, food production, hospitals and laboratories, as well as.
[01 1 ] A película, objeto do presente pedido é composta por materiais nano dimensionados, cuja estrutura refletem até 95% da energia infra-vermelha, dobrando a fotoatividade, pois atua na reflexão dos raios causadores do aquecimento, que correspondem a 52% da energia solar. A alta refletividade das nanopartículas formadoras da película nas faixas abrangidas pelo espectro visível e pelo espectro infravermelho devolve para fora da atmosfera quase a totalidade da energia luminosa incidente; isso faz com que seja evitado o aquecimento dos objetos por absorção e indiretamente por radiação ou condução, visto que as superfícies se mantém frias, próximas a temperatura do ar.  The film, which is the subject of this application, consists of nano-sized materials, whose structure reflects up to 95% of the infrared energy, doubling the photoactivity, as it acts in the reflection of the radii causing the heating, corresponding to 52% of the solar energy. The high reflectivity of the film-forming nanoparticles in the bands covered by the visible spectrum and the infrared spectrum returns out of the atmosphere almost the entire incident light energy; this causes that the heating of the objects by absorption is avoided and indirectly by radiation or conduction, since the surfaces remain cold, near the temperature of the air.
[012] Outra característica da composição é processo de purificação do ar e a eliminação de bactérias, vírus e fungos por meio da oxidação. Há anos a comunidade científica vem estudando o efeito da fotocatálise heterogénea sobre bactérias, vírus, fungos, musgos e briófitas e todos chegaram a comprovação da usabilidade desta característica na esterilização de ambientes aquáticos e aéreos com o processo de fotocatalise heterogénea. A decomposição da água pela fotocatálise resulta na produção de oxigénio singlete e diversas espécies de radicais, que atuam na decomposição de matéria orgânica e na eliminação acelerada de contaminantes de diversas espécies, sem o surgimento de resistência virai ou bacteriana. Além disto, a decomposição de gases tóxicos, como NOx, NHx, SOx, H2S são convertido em formações inócuas ou totalmente decompostos.  Another feature of the composition is the process of air purification and the elimination of bacteria, viruses and fungi by oxidation. For years the scientific community has been studying the effect of heterogeneous photocatalysis on bacteria, viruses, fungi, mosses and bryophytes, and all of them came to prove the usability of this characteristic in the sterilization of aquatic and aerial environments with the heterogeneous photocatalysis process. The decomposition of water by photocatalysis results in the production of singlet oxygen and several species of radicals, which act in the decomposition of organic matter and the accelerated elimination of contaminants of several species, without the appearance of viral or bacterial resistance. In addition, the decomposition of toxic gases such as NOx, NHx, SOx, H2S are converted to harmless or totally decomposed formations.
[013] Vários materiais podem ser usados para processos fotocatalíticos, entretanto, com intuito de comprovar tecnicamente a composição da película desenvolvida, todavia estudos comprovam que o TiO2 quando dopados com trióxidos de tungsténio, WO3, e tratados numa determinada faixa de temperatura, demostram serem mais eficientes quanto a fotoatividade, quando comparado com o TiO2 isoladamente ou outros compostos análogos. A dopagem das nanofibras de TiO2 com tungsténio para a aplicação em nanofilmes de TiO2 visa promover a excitação do TiO2 sob luz visível e, consequentemente, radiação solar, aumentando assim a sua capacidade fotocatalítica, para aplicação na degradação de poluentes orgânicos. Various materials can be used for photocatalytic processes, however, in order to technically prove the composition of the developed film. However, studies have shown that TiO 2 when doped with tungsten trioxides, WO 3, and treated at a given temperature range, are shown to be more efficient in photoactivity when compared to TiO 2 alone or other analogous compounds. The doping of the TiO 2 nanofibers with tungsten for the application in nanofilms of TiO 2 aims to promote the excitation of TiO 2 under visible light and consequently solar radiation, thus increasing its photocatalytic capacity, for application in the degradation of organic pollutants.
[014] Estudos mostram que a eficiência da fotocatálise depende da competição entre o processo em que o elétron é retirado da superfície do semicondutor e o processo de recombinação do par elétron/lacuna o qual resulta na liberação de calor.  Studies show that the efficiency of photocatalysis depends on the competition between the process in which the electron is withdrawn from the surface of the semiconductor and the process of recombination of the electron / gap pair which results in the release of heat.
TiO2 (eBC + h+ BV)→ Ti02 + Δ TiO 2 (eBC + h + BV) → TiO 2 + Δ
[015] O radical hidroxila, um agente oxidante forte, ataca o contaminante presente ou perto da superfície de TiO2 devido ao seu tempo de vida curto, de acordo com as reações The hydroxyl radical, a strong oxidizing agent, attacks the contaminant present or near the surface of TiO 2 due to its short life time, according to the reactions
HO»(ads) + contaminante→→ produto reduzido 1 h+ BV + contaminante→ contaminante ·+→→ produto oxidado 1 HO » (ads) + contaminant → naranja reduced product 1 h + BV + contaminant → contaminant + + → oxidized product 1
eBC + contaminante→→ produto reduzido 2  eBC + contaminant → naranja reduced product 2
[016] Estudos recentes têm elucidado que o mecanismo de degradação não se dá exclusivamente através do radical hidroxila, mas também através de outras espécies radicalares derivadas de oxigénio (02· -, ΗΟ2·, etc.) formadas pela captura de elétrons fotogerados. [016] Recent studies have elucidated that the mechanism of degradation does not occur exclusively through the hydroxyl radical, but also through other radical species derived from oxygen (02 · -, ΗΟ2 ·, etc.) formed by the capture of photogenerated electrons.
[017] Desta forma a composição aqui apresentada compreende características de alta performance no que tange à fotocatálise.  [017] In this way the composition presented here comprises high performance characteristics with regard to photocatalysis.
[018] Dita composição resulta numa película acrílica ou vinílica com ação ativa baseada em nanopartículas do dióxido de titânio dopado com trióxido de tungsténio, em combinação com solventes, espessantes e aglutinantes a base de água que, quando iluminada pela luz do sol ou por luz artificial visível, entre outros efeitos de fotocatálise, cria uma superfícies antimicrobianas e auto limpante, o que impede a fixação de sujidades e/ou micro-organismos, permitindo que o substrato apresente sempre um aspecto de limpeza, reduzindo a necessidade de uso água, detergentes ou processos mecânicos para limpeza. Esta película, em função de sua capacidade bacteriostática, antifúngica e antiviral, pode ser aplicada em ambientes críticos diversos, desde pisos ou pavimentos, até coberturas, paredes, etc. Such composition results in an active acrylic or vinyl film based on nanoparticles of titanium dioxide doped with tungsten trioxide in combination with water-based solvents, thickeners and binders which, when illuminated by sunlight or by light artificial light, among other effects of photocatalysis, creates an antimicrobial and self-cleaning surfaces, which prevents the fixing of dirt and / or microorganisms, allowing the substrate to always have a cleaning aspect, reducing the need to use water, detergents or mechanical cleaning processes. This film, depending on its bacteriostatic, antifungal and antiviral capacity, can be applied in various critical environments, from floors or floors, to coverings, walls, etc.
[019] Com intuito de facilitar a compreensão a seguir é apresentado uma descrição detalhada da composição da película.  [019] In order to facilitate the understanding below a detailed description of the composition of the film is presented.
[020] A película, formada a partir da composição, é formada em uma base de resina acrílica, sintética ou esmalte a base de água, com carga em talco, sendo a água na faixa de 20% a 35%, preferivelmente na faixa de 25% a 30% aíuando como meio solvente da composição. Compreende resina eiastomérica na faixa de 35% a 45%, estando compreendida preferivelmente na faixa de 38% a 42%. E as cargas minerais, sendo preferivelmente o carbonato de cálcio e dolomita na faixa de 20% a 30% preferivelmente na faixa dos 15%. Apresenta cargas de metais diversos nanoparticulados com dimensões específicas para refletir não menos que 40% e não mais que 99% do espectro solar ótico, nas faixas entre 270nm até 3000nm (Entre o UV A e o Infra vermelho longo), sendo nanopartículas de Ti02 dopada com W03 na faixa de 0,01 a 5% preferivelmente na faixa de 2 a 3%. Compreende ainda agentes protetivos como fungicidas, algicidas e bactericidas, na faixa de 0,1 a 2%, preferivelmente na faixa de 0,8 a 1 ,2%. Dita composição pode compreender pigmentos de 10 a 20%; ditos pigmentos podem ser orgânicos e/ou inorgânicos. E são adicionados ainda na composição aditivos reológicos espessastes, alcalinizantes, antisedimentantes na faixa 0,01 a 3%. The film, formed from the composition, is formed from a talc-based water-based acrylic resin, synthetic or enamel base, the water being in the range of 20% to 35%, preferably in the range of 25% to 30% by the solvent medium of the composition. It comprises eosastomeric resin in the range of 35% to 45%, being preferably in the range of 38% to 42%. And the mineral fillers, preferably calcium carbonate and dolomite in the range of 20% to 30%, preferably in the range of 15%. It presents different nanoparticulate metal loads with specific dimensions to reflect not less than 40% and not more than 99% of the optical solar spectrum, in the bands between 270nm and 3000nm (between UV A and Infra red long), being TiO 2 nanoparticles doped with W0 3 in the range of 0.01 to 5% preferably in the range of 2 to 3%. It further comprises protective agents such as fungicides, algicides and bactericides in the range of 0.1 to 2%, preferably in the range of 0.8 to 1.2%. Said composition may comprise pigments of 10 to 20%; said pigments may be organic and / or inorganic. And further thickening, alkalizing, anti-settling rheological additives in the range of 0.01 to 3% are added in the composition.
[021 ] A película obtida pode ser aplicadas em diferentes tipos de coberturas, pisos e paredes, de metal, fibro-cimento, cerâmica, concreto, composic'ão asfáltica, com o propósito de reduzir a absorção de calor nos materiais onde está aplicada em cerca de 40%.  [021] The film obtained can be applied to different types of coverings, floors and walls, of metal, fibro-cement, ceramics, concrete, asphalt composition, with the purpose of reducing the absorption of heat in the materials where it is applied in about 40%.
[022] A Película obtida pode ser aplicada em forma líquida, que depois de curada forma uma película flexível, firmemente fixada no substrato, resistente a água e a solventes fracos, que devido sua composição produz reação de fotocatálise utilizando o espectro UV (entre 80 e 390 nanometros), parte do espectro visível (até 780 nm) e o espectro Infra Vermelho próximo (NIR) e o Infra Vermelho, até 2700nm, que decompõe as moléculas de água presentes no ar ou em materiais orgânicos, que ao entrarem em contato com as partículas metálicas superficiais, degradam-se, gerando oxigénio singlete e/ou triplete, radical ânion superóxido além de diversos radicais hidroxila, sem o uso de qualquer forma extra de energia. Estes radicais, eliminam bactérias, vírus, fungos, briófitas e gases tóxicos, tais como (H2S, NH3, SOx, BTEx Butano, Eteno, Xileno e Toluenos), além de organoclorados. Estas propriedades, aliadas ao fato da ampliação da sensibilidade ótica para a banda visível da luz, permite que outras aplicações sejam pleiteadas nesta mesma patente. The obtained film can be applied in liquid form, which after curing forms a flexible film, firmly attached to the substrate, resistant to water and weak solvents, which due to its composition produces photocatalysis reaction using the UV spectrum (between 80 and 390 nanometers), part of the visible spectrum (up to 780 nm) and InfraRed near (NIR) and InfraRed, up to 2700 nm, which decomposes the water molecules present in the air or in organic materials that, when they come in contact with the surface metallic particles, degrade, generating singlet and / or triplet oxygen, superoxide anion radical in addition to several hydroxyl radicals, without the use of any extra form of energy. These radicals eliminate bacteria, viruses, fungi, bryophytes and toxic gases, such as (H2S, NH3, SOx, BTEx Butane, Ethene, Xylene and Toluenes), as well as organochlorines. These properties, together with the increase of the optical sensitivity for the visible light band, allow other applications to be applied for in the same patent.
[023] Dita película resulta também na redução da temperatura no entorno, provocando uma melhoria ambiental, eliminando as "ilhas de calor". Esta característica abre grandes opções para aplicação em qualquer atividade onde o calor é componente indesejável, como em áreas desportivas, ginásios, academias, casas de show, cinemas, shopping centers, edifícios comerciais ou residenciais, oficinas, indústrias, depósitos, silos e armazéns, criatórios de frangos, produção de ovos, suínos, gado de corte ou produção de laticínios, onde poderá ser reduzido os custos para condicionamento do ar e propiciar conforto térmico, bem-estar animal e preservação da qualidade das safras e das sementes.  [023] This film also results in the reduction of the temperature in the surroundings, causing an environmental improvement, eliminating the "islands of heat". This feature opens up great options for application in any activity where heat is undesirable, such as sports areas, gymnasiums, gyms, show houses, cinemas, shopping centers, commercial or residential buildings, workshops, industries, warehouses, silos and warehouses, poultry breeding, egg production, swine, beef cattle or dairy production, where the costs for air conditioning can be reduced and thermal comfort, animal welfare and preservation of the quality of the crops and seeds can be provided.

Claims

REIVINDICAÇÕES
1 . "COMPOSIÇÃO DE PELÍCULA REFLETIVA TÉRMICA E FOTOCATALÍTICA", formada por pigmentos em solução ou emulsão de um ou mais polímeros, monocamada, a base de polímeros acrílicos ou vinílicos, dissolvidos em água, com acréscimo de materiais nanoparticulados fotocatalíticos obtendo-se, por processo convencional, película acrílica ou vinílica com ação ativa baseada em nanopartículas de metais em combinação com solventes, espessantes e aglutinantes a base de água, com boa fixação ao substrato, resistente a água e a solventes fracos, caracterizada por compreender água na faixa de 20% a 35%; resina elastomérica na faixa de 35% a 45%; cargas minerais, na faixa de 20% a 30%; agentes protetivos como fungicidas, algicidas e bactericidas, na faixa de 0,1 a 2%; aditivos reológicos espessantes, alcalinizantes, aníisedimentantes na faixa 0,01 a 3% e compreender nanopartículas de Ti02 dopada com W03 na faixa de 0,01 a 5%. 1 . "THERMAL AND PHOTOCATALITIC REFLECTIVE COMPOSITION", consisting of solution or emulsion pigments of one or more monolayer polymers, based on acrylic or vinyl polymers, dissolved in water, with addition of photocatalytic nanoparticulate materials, obtaining, by conventional process , acrylic or vinyl film with active action based on metal nanoparticles in combination with solvents, thickeners and water-based binders, with good adhesion to the substrate, resistant to water and weak solvents, characterized in that it comprises water in the range of 20% to 35%; elastomeric resin in the range of 35% to 45%; mineral loads, in the range of 20% to 30%; protective agents such as fungicides, algicides and bactericides, in the range of 0.1 to 2%; thickeners , rheological additives, alkalizing, aníisedimentantes in the range 0.01 to 3% and comprises Ti0 2 nanoparticles doped with W0 3 in the range of 0.01 to 5%.
2. "COMPOSIÇÃO DE PELÍCULA REFLETIVA TÉRMICA E FOTOCATALÍTICA", de acordo com reivindicação 1 , caracterizada por a água compreender preferivelmente na faixa de 25% a 30%.  A "THERMAL AND PHOTOCATALITIC REFLECTIVE FILM COMPOSITION" according to claim 1, characterized in that the water comprises preferably in the range of 25% to 30%.
3. "COMPOSIÇÃO DE PELÍCULA REFLETIVA TÉRMICA E FOTOCATALÍTICA", de acordo com reivindicação 1 , caracterizada pela resina elastomérica estar compreendida preferivelmente na faixa de 38% a 42%.  A "THERMAL AND PHOTOCATALYTIC REFLECTIVE FILM COMPOSITION" according to claim 1, characterized in that the elastomeric resin is preferably in the range of 38% to 42%.
4. "COMPOSIÇÃO DE PELÍCULA REFLETIVA TÉRMICA E FOTOCATALÍTICA", de acordo com reivindicação 1 , caracterizada pelas cargas minerais serem preferivelmente o carbonato de cálcio e doíomita.  A "THERMAL AND PHOTOCATALYTIC REFLECTIVE FILM COMPOSITION" according to claim 1, characterized in that the mineral fillers are preferably calcium carbonate and dolomitic.
5. "COMPOSIÇÃO DE PELÍCULA REFLETIVA TÉRMICA E FOTOCATALÍTICA", de acordo com reivindicação 4, caracterizada pelas cargas minerais estar compreendida preferivelmente na faixa de 15%.  "THERMAL AND PHOTOCATALYTIC REFLECTIVE FILM COMPOSITION", according to claim 4, characterized in that the mineral fillers are preferably in the range of 15%.
6. "COMPOSIÇÃO DE PELÍCULA REFLETIVA TÉRMICA E FOTOCATALÍTICA", de acordo com reivindicação 1 , caracterizada pelos agentes protetivos estar compreendido preferivelmente na faixa de 0,8 a 1 ,2%. A "THERMAL AND PHOTOCATALYTIC REFLECTIVE FILM COMPOSITION" according to claim 1, characterized in that the protective agents are preferably in the range of 0.8 to 1.2%.
7. "COMPOSIÇÃO DE PELÍCULA REFLETIVA TÉRMICA E FOTOCATALÍTICA", de acordo com reivindicação 1 , caracterizada por compreender pigmentos na faixa de 10 a 20%. "THERMAL AND PHOTOCATALYTIC REFLECTIVE FILM COMPOSITION", according to claim 1, characterized in that it comprises pigments in the range of 10 to 20%.
8. "COMPOSIÇÃO DE PELÍCULA REFLETIVA TÉRMICA E FOTOCATALÍTICA", de acordo com reivindicação 7, caracterizada pelos pigmentos ser orgânicos. A "THERMAL AND PHOTOCATALYTIC REFLECTIVE FILM COMPOSITION" according to claim 7, characterized in that the pigments are organic.
9. "COMPOSIÇÃO DE PELÍCULA REFLETIVA TÉRMICA E FOTOCATALÍTICA", de acordo com reivindicação 7, caracterizada pelos pigmentos ser inorgânicos.  A "THERMAL AND PHOTOCATALYTIC REFLECTIVE FILM COMPOSITION" according to claim 7, characterized in that the pigments are inorganic.
10. "COMPOSIÇÃO DE PELÍCULA REFLETIVA TÉRMICA E FOTOCATALÍTICA", de acordo com reivindicação 7, caracterizada pelas nanopartículas de TiO2 dopada com WO3 estar preferivelmente na faixa de 2 a 3%. A THERMAL AND PHOTOCATALYTIC REFLECTIVE FILM COMPOSITION according to claim 7, characterized in that the TiO 2 nanoparticles doped with WO 3 are preferably in the range of 2 to 3%.
PCT/BR2018/050357 2017-09-29 2018-09-28 Composition for a reflective, thermal, photocatalytic film WO2019060974A1 (en)

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20120260819A1 (en) * 2009-05-11 2012-10-18 Amit Ashok Ganpule Thermal reflective paint
CN102993874A (en) * 2012-12-27 2013-03-27 海南红杉科创实业有限公司 Interior wall heat insulation coating
CN104449104A (en) * 2014-12-31 2015-03-25 深圳市嘉达高科产业发展有限公司 High-ultraviolet-reflectivity reflective insulation coating and preparation method thereof
CN105038422A (en) * 2015-07-14 2015-11-11 上海森瀚新型材料科技有限公司 Composite functional type heat insulating coating for building wall
CN105505060A (en) * 2015-12-31 2016-04-20 长沙民德消防工程涂料有限公司 Water-based nano reflection and heat insulation transparent coating and preparation method thereof

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20120260819A1 (en) * 2009-05-11 2012-10-18 Amit Ashok Ganpule Thermal reflective paint
CN102993874A (en) * 2012-12-27 2013-03-27 海南红杉科创实业有限公司 Interior wall heat insulation coating
CN104449104A (en) * 2014-12-31 2015-03-25 深圳市嘉达高科产业发展有限公司 High-ultraviolet-reflectivity reflective insulation coating and preparation method thereof
CN105038422A (en) * 2015-07-14 2015-11-11 上海森瀚新型材料科技有限公司 Composite functional type heat insulating coating for building wall
CN105505060A (en) * 2015-12-31 2016-04-20 长沙民德消防工程涂料有限公司 Water-based nano reflection and heat insulation transparent coating and preparation method thereof

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