Coating composition and process for applying same to metal substrates
AssigneeCia. Industrial H. Carlos Schneider
InventorMarcelo DA SILVA GOMES
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Abstract
The present patent of invention is related to a composition of a coating configured by at least two layers, being a base layer and a nano composite top layer of an aqueous coating containing silicon nanoparticles and stainless steel nano and micro particles, preferably class 316L steel, to enhance protection against corrosion and the respective application process of said coating on metallic substrates.
Claims12
“Composition of a coating”, where the referred coating is configured by at least one base layer and at least one nano composite top layer, applied to the same metallic substrate, in which the base layer comprises:
- an organometallic dispersion based on zinc and aluminium alloys, or
- a base of zinc or zinc alloys applied electrolytically to the metal surface
- characterized by the top nano composite layer comprising silicon oxide nanoparticles, stainless steel nano and micro particles and the following compounds in percentage by weight:
- Colorless version:
- 15% to 30% Colloidal Silica;
- 0.2% to 5% Stainless Steel;
- up to 8% 2-Butoxyethanol;
- up to 10% Methanol;
- from 35% to 70% Water;
- or
- Black Version:
- 0.2% and 5% Stainless Steel;
- up to 8% 2-Butoxyethanol;
- up to 10% Methanol;
- from 40% to 70% Water;
- up to 5% Black Dye
- from 20% to 25% of Tetraethylorthosilicate.
Dependencies are inferred from the claim text.