Oxygen-scavenging compositions and articles
US6586514B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 4, 2002 |
| Grant date | Jul 1, 2003 |
| Priority date | — |
| Expiry date | Jan 4, 2022 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/254
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Oxygen-scavenging compositions comprising an oxidizable metal component, an electrolyte component and a solid, non-electrolytic, acidifying component. When blended with soft, flexible polymeric resins, these compositions exhibit good oxygen-scavenging performance with improved oxidation efficiency relative to compositions containing an oxidizable metal component, an electrolyte, and an acidifying component combined with a more rigid thermoplastic resins. Selection of a thermally stable non-electrolytic, acidifying component is important when melt compounding the compositions into polymeric resins and particularly for extrusion coating applications. The compositions can be used directly as an oxygen absorbent resin melt-fabricated into a wide variety of oxygen-scavenging packaging articles or as concentrates in combination with other thermoplastic resins.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.