Oxygen absorbent composition
US9840360B2 · kind B2 · utility
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4Claims
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Key dates
| Filing date | Mar 5, 2014 |
| Grant date | Dec 12, 2017 |
| Priority date | — |
| Expiry date | Mar 5, 2034 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D2257/104
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
An oxygen absorbent composition which comprises a polyester oligomer containing a constitutional unit derived from a tetralin ring-containing carboxylic acid and a diol, wherein the polyester oligomer has a number average molecular weight of 500 to 10000, and a transition metal catalyst comprising at least one transition metal selected from the group consisting of manganese, iron, cobalt, nickel and copper.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.