Oxygen scavenging additives for plastic containers
US9018284B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 6, 2011 |
| Grant date | Apr 28, 2015 |
| Priority date | — |
| Expiry date | Dec 30, 2033 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08K2201/012
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The present invention provides a composition comprising: a base polymer; at least one compound having the structure of Formula I or IIwherein Ar is an o-, m-, or p-phenylene moiety, a substituted phenylene moiety, or a naphthalene moiety; R1 and R2 are independently selected from the group consisting of: hydrogen, alkyl, alkenyl, and aryl; and X is O or —(CH2)n—; n=0, 1, or 2; and p=0, 1, or 2; and; and at least one transition metal in a positive oxidation state, said metal being present in the composition in an amount of from about 10 to about 400 ppm, wherein said compound is present in an amount of from about 0.10 to about 10 weight percent of the composition.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.