Methods and compositions for on-demand release of ClO2 gas from UV-activated chlorite ion
US11590472B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Aug 18, 2016 |
| Grant date | Feb 28, 2023 |
| Priority date | — |
| Expiry date | Apr 3, 2039 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L2203/16
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
Compositions and methods for generating ClO2 gas are disclosed. A composition that includes a chlorite salt is activated by exposure to ultraviolet light. After an optional storage period, the composition is then exposed to moisture, resulting in the generation of ClO2 gas. Exemplary compositions include polymers in which the chlorite salt is dispersed. The polymers may be used to form films that can be used to package, e.g., food products, pharmaceutical products, medical devices, and/or laboratory devices. Upon exposure to ultraviolet light and moisture, the packaging releases controlled quantities of ClO2 gas, which may disinfect and/or deodorize the packaged device or product.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.