NOVELTY – Silica-based nanoproducts production involves preparing silicate solution and weak organic acid solution, where the prepared weak organic acid solution is added in the silicate solution. The obtained mixture is refluxed, filtered, concentrated and dried. The dried mixture is adsorbed and then dried. The silicate solution is prepared by dissolving 0.1-10%, preferably 1% of sodium alkaline silicate in distilled water. USE – Method for producing silica-based nanoproducts, preferably silica nanoparticle hydrogel and silica nanoparticles used as a support for catalysts, materials adsorbing stationary phase for gas chromatography and liquid phase, reinforcing agent in rubber, elastomer, texturizing agent, material filling, abrasives, polishing material, carrier systems and additives for agricultural sectors, home and personal care, ceramics, polymers, and paints (all claimed). ADVANTAGE – The method efficiently produces silica-based nanoproducts having improved fungicidal and bactericidal properties by adsorption of specific metal ions to the silica nanoparticles. DESCRIPTION OF DRAWING(S) – The drawing shows a graphical representation depicting size distribution of the silica nanoparticles.

Main Application Field

G02 (Inks, paints, polishes – polymer-based paints and inks are also classified in Section A (C09D, F, G).); D21 (Preparations for dental or toilet purposes – including filling alloys, compositions for dentures or dental impressions, anti-caries chewing gum, plaque disclosing compositions, toothpastes, cosmetics, shampoos, topical anti-sunburn compositions and toilet soaps (A61K).); J04 (Chemical/physical processes/apparatus – including catalysis, catalysts (excluding specific e.g. enzymatic or polymerisation catalysts), colloid chemistry, laboratory apparatus and methods, testing, controlling, general encapsulation, detection and sampling (excluding clinical testing) (B01J, L).); L02 (Refractories, ceramics, cement – includes manufacturing methods, limes, soil preparation for (road) building, magnesias and slags, cements, mortars, concretes, abrasives, thermal or acoustic insulation (non)oxide ceramics and ceramic composites, but not brick making, concrete mixers or casting or potters’ wheels (C04).)

INVENTORS:

APARECIDO SIGOLI FERNANDO
BELINI TABITA CRISTINA
ODONE MAZALI ITALO

538_VIA SILICATO

Patent number: WO2013086596-A1;BR201105171-A2

PATENT STATUS:

For information contact Inova Unicamp

FOR ADDITIONAL INFORMATION:

parcerias@inova.unicamp.br

+55 (19) 3521-5207 / 2607

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