Oxygen scavengers, compositions comprising the scavengers, and articles made from the compositions

1. A composition comprising:

a. a base polymer;

b. at least one compound of formula

wherein Ar is aryl or heteroaryl;

wherein each Q 1 is independently N or P;

wherein each of Ar 1 and Ar 2 is independently aryl or heteroaryl; and wherein each Ar 1 and Ar 2 is independently substituted with 0, 1, 2, or 3 groups independently selected from halogen, C1-C4 alkyl, and electron withdrawing groups, and valence is satisfied;

wherein each of R 1 and R 2 is independently selected from hydrogen,

wherein R 3 represents three groups, each group independently selected from hydrogen, halogen, C1-C4 alkyl, and electron withdrawing groups;

wherein R 4 represents three groups, each group independently selected from hydrogen, halogen, C1-C4 alkyl, and electron withdrawing groups;

wherein R 5 represents four groups, each group independently selected from hydrogen, halogen, C1-C4 alkyl, and electron withdrawing groups;

wherein R 10 represents five groups independently selected from hydrogen, halogen, C1-C4 alkyl, and electron withdrawing groups;

wherein R 11 represents five groups independently selected from hydrogen, halogen, C1-C4 alkyl, and electron withdrawing groups;

wherein R 12 represents three groups independently selected from hydrogen, halogen, C1-C4 alkyl, and electron withdrawing groups;

wherein R 13 represents three groups independently selected from hydrogen, halogen, C1-C4 alkyl, and electron withdrawing groups;

wherein R 14 represents four groups independently selected from hydrogen, halogen, C1-C4 alkyl, and electron withdrawing groups; and

wherein each Q 2 is independently N or P; and

c. cobalt in a positive oxidation state;

wherein said compound is present in an amount of about 0.10 to 10 weight percent of said composition, and

wherein cobalt is present as a salt having an anion selected from chloride, acetate, oleate, stearate, palmitate, 2-ethylhexanoate, neodecanoate, octanoate, lactate, naphthalate, malate, acetylacetonate, linoleate, and ethylene glycolate.

2. The composition of claim 1 , wherein Ar is aryl selected from

wherein each R 26a , R 26b , and R 26c is independently selected from hydrogen, halogen, C1-C4 alkyl, and electron withdrawing groups.

3. The composition of claim 1 , wherein cobalt is present in the composition in an amount of 10 to 400 ppm.

4. The composition of claim 1 , wherein the base polymer comprises a polyester polymer.

5. The composition of claim 1 , wherein the compound has the structure

6. A composition comprising:

a. a base polymer;

b. at least one compound of formula

wherein Ar is aryl or heteroaryl;

wherein each Q 1 is independently N or P;

wherein each of Ar 1 and Ar 2 is independently aryl or heteroaryl; and wherein each Ar 1 and Ar 2 is independently substituted with 0, 1, 2, or 3 groups independently selected from halogen, C1-C4 alkyl, and electron withdrawing groups, and valence is satisfied;

wherein each Z 1 and Z 2 are independently hydrogen, halogen, C1-C4 alkyl, electronic withdrawing group, electronic donating group, or collectively ═O; provided that at least one set of Z 1 and Z 2 are hydrogens;

wherein each of R 1 and R 2 is independently selected from hydrogen,

wherein R 10 represents five groups independently selected from hydrogen, halogen, C1-C4 alkyl, and electron withdrawing groups;

wherein R 11 represents five groups independently selected from hydrogen, halogen, C1-C4 alkyl, and electron withdrawing groups;

wherein R 12 represents three groups independently selected from hydrogen, halogen, C1-C4 alkyl, and electron withdrawing groups;

wherein R 13 represents three groups independently selected from hydrogen, halogen, C1-C4 alkyl, and electron withdrawing groups;

wherein R 14 presents four groups independently selected from hydrogen, halogen, C1-C4 alkyl, and electron withdrawing groups;

wherein each Q 2 is independently N or P;

wherein each Z 3 and Z 4 are independently hydrogen, halogen, C1-C4 alkyl, electronic withdrawing group, electronic donating group, or collectively ═O;

wherein each Z 5 and Z 6 are independently hydrogen, halogen, C1-C4 alkyl, electronic withdrawing group, electronic donating group, or collectively ═O; and

wherein each Z 7 and Z 8 are independently hydrogen, halogen, C1-C4 alkyl, electronic withdrawing group, electronic donating group, or collectively ═O; and

c. cobalt in a positive oxidation state;

wherein said compound is present in an amount of about 0.10 to 10 weight percent of said composition, and

wherein cobalt is present as a salt having an anion selected from chloride, acetate, oleate, stearate, palmitate, 2-ethylhexanoate, neodecanoate, octanoate, lactate, naphthalate, malate, acetylacetonate, linoleate, and ethylene glycolate.

7. An article of manufacture comprising a composition according to claim 1 .

8. The article of claim 7 , wherein the article is a preform, sheet, bottle, cup, or jar.

9. A wall for a package comprising a composition, said wall comprising:

a. one or more outer layers; and

b. one or more inner layers;

wherein at least one of said inner or at least one of said outer layers comprises a composition according to claim 1 .

10. The wall of claim 9 , wherein the first layer is disposed radially outward from said second layer.

11. A container from a film-forming polymer, having at least one wall comprising an effective amount of an oxygen-scavenging composition according to claim 1 .

12. The composition of claim 1 , wherein the compound has the formula:

13. The composition of claim 12 , wherein Ar is aryl, Ar 1 is aryl, Ar 2 is aryl, R 1 is hydrogen, and R 2 is:

14. The composition of claim 1 , wherein cobalt is cobalt (II) 2-ethylhexanoate, cobalt oleate, or cobalt (II) neodecanoate.

15. The composition of claim 6 , wherein cobalt is in the +3 oxidation state.

16. The composition of claim 6 , wherein cobalt is cobalt (II) 2-ethylhexanoate, cobalt oleate, or cobalt (II) neodecanoate.

17. The composition of claim 1 , wherein cobalt is in the +3 oxidation state.

18. A composition comprising:

a. a polyester;

b. at least one compound of formula

c. cobalt (II) 2-ethylhexanoate, cobalt oleate, cobalt (II) neodecanoate, or a mixture thereof;

wherein said compound is present in an amount of about 0.10 to 10 weight percent of said composition.