Oxygen scavenging compositions comprising polymers derived from tetrahydrofurfuryl monomers
AssigneeChevron Phillips Chemical Company LP
InventorsHu Yang, Ta Yen Ching, Lennard Torres
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Abstract
Herein is disclosed an oxygen scavenging composition, comprising an oxygen scavenging polymer comprising units having structure I: wherein R is selected from the group consisting of —H and —C1-C6 alkyls and n is an integer greater than or equal to 1; and an oxidation catalyst. The oxygen scavenging polymer can be used to form an oxygen scavenging packaging article.
Claims40
An oxygen scavenging composition, comprising:
- an oxygen scavenging polymer comprising from about 40 mol % to 100 mol % units having structure I:
- wherein R is selected from the group consisting of —H and —C1-C6 alkyls and n is an integer greater than or equal to 1;
- and
- an oxidation catalyst.
A packaging article, comprising:
- an oxygen scavenging layer comprising an oxygen scavenging polymer comprising from about 40 mol % to 100 mol % units having structure I:
- wherein R is selected from the group consisting of —H and —C1-C6 alkyls and n is an integer greater than or equal to 1;
- and,
- an oxidation catalyst.
A method of initiating oxygen scavenging by an oxygen scavenging composition, comprising:
- (a) providing an oxygen scavenging composition, comprising:
- (i) an oxygen scavenging polymer comprising from about 40 mol % to 100 mol % units having structure I:
- wherein R is selected from the group consisting of —H and —C1-C6 alkyls and n is an integer greater than or equal to 1;
- (ii) an oxidation catalyst;
- and,
- (iii) an energy-absorbing compound selected from the group consisting of microwave reactive materials and photoinitiators having a wavelength of maximum absorption of electromagnetic radiation from about 200 nm to about 750 nm;
- and
- (b) exposing the oxygen scavenging composition to electromagnetic radiation for a duration sufficient to initiate oxygen scavenging by the oxygen scavenging composition.
A method of producing an oxygen scavenging polymer, comprising:
- (a) polymerizing a monomer composition comprising from about 40 mol % to 100 mol % monomers having structure II:
- wherein R is selected from the group consisting of —H and —C1-C6 alkyls, to form an oxygen scavenging polymer.
Dependencies are inferred from the claim text.