Composition for and method of absorbing oxygen in an oxygen/carbon dioxide environment
US6209289A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 3, 1993 |
| Grant date | Apr 3, 2001 |
| Priority date | — |
| Expiry date | Jun 3, 2013 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA23B2/90
- WIPO fieldFood chemistry
- WIPO sectorChemistry
Abstract
A composition for absorbing oxygen and releasing carbon dioxide in a high moisture environment including by weight an iron-based component for absorbing oxygen in an amount of between about 15% and 60%, a carbon dioxide releasing component for releasing carbon dioxide in an amount of between about 8% and 50%, an acidifying component for providing acid for activating the carbon dioxide releasing component, and a dry water-attracting component for preventing premature activation of the iron-based component and carbon dioxide releasing component and for attracting water from a high moisture environment to thereby supply water for activating the acidifying component and the iron-based component. A method of absorbing oxygen and releasing carbon dioxide in a container having a product and a high moisture environment and wherein oxygen was flushed out and replaced by at least 26% carbon dioxide and the remaining atmosphere in the container having 17% or less oxygen content after the flushing and into which additional oxygen may have entered including the steps of providing a container, placing a product into the container, flushing the container with a gas containing carbon dioxide, and …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.