Solution composition for surface treatment of steel sheet and surface-treated steel sheet using same
US11939489B2 · kind B2 · utility
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Key dates
| Filing date | Sep 28, 2017 |
| Grant date | Mar 26, 2024 |
| Priority date | — |
| Expiry date | Mar 2, 2041 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L83/06
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Provided is a composition for surface treatment of a steel sheet, the composition having excellent resistance to an acid, such as sulfuric acid, and to a coated steel sheet to which the composition for surface treatment is applied, wherein the composition for surface treatment comprises 30-50% wt % of colloidal silica containing 5-20 nm-sized silica, 40-60% wt % of silane containing three or more alkoxy groups, 5-15 wt % of an acrylate-based organic monomer, 0.01-1 wt % of an acid, and 1-15 wt % of a solvent.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.