Stain resistant coating composition
US6911069B2 · kind B2 · utility
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16References
7Claims
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Assignee
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Key dates
| Filing date | Nov 12, 2002 |
| Grant date | Jun 28, 2005 |
| Priority date | — |
| Expiry date | Apr 26, 2023 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L39/06
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Iodine or iodophor stain resistance is imparted to a surface by applying a hardenable coating composition containing an effective amount of a reducing agent having a redox potential sufficient to decolorize an iodine or iodophor stain. The reducing agent reacts with triiodide anion in the stain to change the stain coloration from a yellowish hue (e.g., yellow-white, yellow or brown) towards a lighter hue (e.g., pale yellow, white or transparent). This decolorization reaction takes place over a period of minutes, hours or days, and preferably can eventually cause the stain to disappear.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.