Catalytic process for removing oxygen from sealed packages
US6562258B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 7, 2000 |
| Grant date | May 13, 2003 |
| Priority date | — |
| Expiry date | Apr 7, 2020 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/1352
- WIPO fieldFood chemistry
- WIPO sectorChemistry
Abstract
A method of removing small quantities of entrained oxygen from sealed packages containing an oxidizable product said method utilizing a particulate catalyst which has high activity for combining hydrogen and oxygen, the catalyst particles being partially encapsulated on a surface of a water-insoluble adhesive which is applied to a predetermined area of the inside surface of the sealed package. The catalyst can be a platinum group metal supported on a porous inert carrier. The adhesive material can be poly(vinylbutyral), nitrocellulose, ethyl cellulose, a polyurethane or a silicone material (e.g., a silicone rubber). The oxidizable product can be a perishable foodstuff.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.