Curable film-forming compositions containing lithium silicates as corrosion inhibitors and multilayer coated metal substrates
US12384135B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 27, 2016 |
| Grant date | Aug 12, 2025 |
| Priority date | — |
| Expiry date | Dec 16, 2038 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L2203/16
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A curable film-forming composition is provided, comprising: (1) a curable, organic film-forming binder component; and (2) a corrosion inhibiting component comprising a lithium silicate, present in the curable film-forming composition in an amount of 0.1 to 4.5 percent lithium by weight. Also provided are coated metal substrates, including multilayer coated metal substrates, comprising the above composition. Also provided is a multilayer coated metal substrate comprising: (a) a metal substrate; (b) a first curable film-forming composition applied to said metal substrate; and (c) a second curable film-forming composition applied on top of at least a portion of the first curable film-forming composition. The first and second curable film-forming compositions in dependently comprise: (1) a curable, organic film-forming binder component; and (2) a corrosion inhibiting component comprising lithium silicate, magnesium oxide and/or an azole.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.