Inks and coatings that prevent the migration of heavy metals
US8808806B2 · kind B2 · utility
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4References
19Claims
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Key dates
| Filing date | Oct 1, 2009 |
| Grant date | Aug 19, 2014 |
| Priority date | — |
| Expiry date | May 28, 2030 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L33/08
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A composition which cures in ambient conditions to form a film substantially impenetrable to heavy metals, contains water, a water-miscible organic solvent, a water-borne primary resin having a glass transition temperature of 25 degrees C. or less, and a hydrophobic surfactant.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.