Nanostructured iron/carbon for scavenging oxygen
US11134707B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | May 23, 2016 |
| Grant date | Oct 5, 2021 |
| Priority date | — |
| Expiry date | Aug 1, 2036 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65D81/266
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
The invention is directed to a nanostructured composite material comprising a mixture of at least one metal particle such as iron and a carbon material from biomass such as D-glucose, D-glucosamine hydrochloride or a-cyclodextrin. The invention is also directed to a composition comprising the composite material comprising the composite material and an inorganic salt, and a method for synthesizing the composite material comprising immersing the carbon material into a solution of metal ions, drying the impregnated carbon particle and subjecting the impregnated carbon particle to a carbothermal reduction process. The nanostructured composite material is useful as an oxygen scavenging layer in a multi-layer film which comprises the oxygen scavenging layer and an oxygen barrier layer that retards the permeation of oxygen from an external environment.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.