Back to results
US 2013/0095334 A1Published application
Oxygen-Scavenging Materials and Articles Formed Therefrom
AssigneeValspar Sourcing, Inc.
InventorsPaul Share, Jeffrey Niederst, Richard Evans, Grant Schutte
Life of this patent
Estimating the term…
Abstract
An oxygen-scavenging composition is provided that includes an oxygen-scavenging component and a catalyst. The oxygen-scavenging component, which in preferred embodiments is suitable for use in packaging articles, includes two or more oxygen-scavenging groups having different scavenging properties. In one embodiment, one of the oxygen-scavenging groups is an unsaturated bicyclic group.
Claims20
A composition comprising:
- an oxygen-scavenging component including:
- a polyamide oxygen-scavenging group, and
- a bicyclic oxygen-scavenging group having at least one double bond located between atoms of a ring,
- wherein at least one of the polyamide or bicyclic oxygen-scavenging groups is included in a polymer;
- and
- an oxidation catalyst.
3 more elements
A method, comprising:
- providing:
- a conjugated diene component, and
- an unsaturated component;
- and
- forming a first oxygen-scavenging polymer that includes a bicyclic group that is a Diels-Alder reaction product of the above components, wherein the bicyclic group includes at least one ring having a double bond located between atoms of the ring;
- and
- forming an oxygen-scavenging composition that comprises:
- (i) the first oxygen-scavenging polymer;
- (ii) at least one of:
- (a) a structural unit represented by the below structural formula (I):
- -arylene-C(HR1)—N(R2)—(C═O)—,
- wherein R1 and R2 independently denote one of a hydrogen atom, a substituted or unsubstituted alkyl group, a substituted or unsubstituted cycloalkyl group, a substituted or unsubstituted aryl group, or a substituted or unsubstituted alkenyl or cycloalkenyl group;
- or
- (b) an unsaturated oxygen-scavenging group that includes at least one carbon-carbon double bond with a heat of hydrogenation of less than or equal to that of cyclohexene;
- wherein the above (a) or (b) are present on the first oxygen-scavenging polymer or a second oxygen-scavenging polymer;
- and
- (iii) an oxidation catalyst.
14 more elements
A composition comprising:
- an oxygen-scavenging component having at least one of:
- a first oxygen-scavenging comprising a cyclic or bicyclic oxygen-scavenging group having at least one carbon-carbon double bond located between atoms of a ring, wherein:
- the carbon-carbon double bond has a heat of hydrogenation of at least 33 kcal/mole, and
- the cyclic or bicyclic group is included in a polymer having a condensation backbone;
- and
- a second oxygen-scavenging group comprising:
- one or more of a structural unit represented by the formula:
- -arylene-C(HR1)—N(R2)—(C═O)—,
- wherein R1 and R2 independently denote one of a hydrogen atom, a substituted or unsubstituted alkyl group, a substituted or unsubstituted cycloalkyl group, a substituted or unsubstituted aryl group, or a substituted or unsubstituted alkenyl or cycloalkenyl group, or an unsaturated oxygen-scavenging group that includes at least one carbon-carbon double bond
- with a heat of hydrogenation of 32 kcal/mole or less;
- and
- an oxidation catalyst.
9 more elements
Dependencies are inferred from the claim text.