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US 8,476,400 B2Granted
Dendritic oxygen scavenging polymer
AssigneeValspar Sourcing, Inc.
InventorsRichard D. Joslin, Jeffrey Niederst, Paul E. Share, Grant Schutte
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Abstract
An oxygen-scavenging composition is provided that includes an oxygen-scavenging polymer and a catalyst. The oxygen-scavenging polymer, which in preferred embodiments is suitable for use in packaging articles, is a dendritic polymer having one or more oxygen-scavenging groups.
Claims22
An article for packaging a food or beverage product, the article comprising:
- one or more layers of a composition comprising:
- an oxygen-scavenging dendritic polymer having a globular morphology with a degree of branching of at least 0.2, and a plurality of oxygen-scavenging groups located at terminal units of the dendritic polymer;
- and
- an oxidation catalyst comprising a transition metal, wherein the oxidation catalyst is configured to catalyze an oxygen-scavenging reaction with the oxygen-scavenging groups of the dendritic polymer to reduce oxygen contamination of the package food or beverage product.
1 more element
Dependencies are inferred from the claim text.