Multifunctional photocatalytic and sanitary paints and the...

C - Chemistry – Metallurgy – 09 – D

Patent

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C09D 5/16 (2006.01) C04B 41/65 (2006.01) C04B 41/70 (2006.01) C09D 1/00 (2006.01) C09D 5/14 (2006.01) C09D 7/12 (2006.01)

Patent

CA 2707319

The multifunctional paint is based on a highly porous inorganic substance created by a reaction of at least two components. TiO2 nanoparticles are attached to the surface of this substance. The first component is a water insoluble calcium compound and the second component is a water soluble sulfate. The method of applying the multifunctional paint on the surface is that the first component containing the water suspension of the insoluble calcium compound is applied on the treated area first and subsequently a mixture of TiO2 nanoparticles suspended in the water solution of the second component is applied over the first layer. Another way is to apply a water suspension of the first component containing also Ti02 nanoparticles on the treated surface and then deposit the water solution of the second component on the layer. A mixture of all components can be also applied on the treated area at once.

La peinture multifonctionnelle est à base d'une substance inorganique hautement poreuse créée par une réaction d'au moins deux composants. Des nanoparticules de TiO2 sont fixées à la surface de cette substance. Le premier composant est un composé du calcium insoluble dans l'eau et le second composant est un sulfate soluble dans l'eau. Le procédé d'application de la peinture multifonctionnelle sur la surface consiste à appliquer en premier lieu le premier composant contenant la suspension aqueuse du composé du calcium insoluble sur la zone traitée et, par la suite, appliquer un mélange de nanoparticules de TiO2 en suspension dans la solution aqueuse du second composant sur la première couche. Une autre manière consiste à appliquer une suspension aqueuse du premier composant contenant également des particules de TiO2 sur la surface traitée, puis à déposer la solution aqueuse du second composant sur la couche. Un mélange de tous les composants peut également être appliqué en même temps sur la zone traitée.

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