Oxygen scavenging compositions, articles containing same, and methods of their use
The disclosure relates to oxygen scavenging polymers, compositions comprising the polymers, articles comprising the polymers and/or compositions, and methods of making the polymers, compositions, and/or articles. This abstract is intended as a scanning tool for purposes of searching in the particular art and is not intended to be limiting of the present invention.
1. A composition comprising:
a) a polyester polymer;
b) a compound of formula I or II:
wherein
X is selected from the group consisting of O, S, and NH;
Y, A and B are independently selected from the group consisting of N and CH;
D, E and F are independently selected from the group consisting of CH, N, O, and S;
the symbol ----- when used in conjunction with a bond line represents a single or a double bond; and
R 1 , R 2 , and R 3 are independently selected from the group consisting of H, —NH 2 , —NO 2 , —CN, methyl, ethyl, propyl, isopropyl, butyl, isobutyl, tert-butyl, —CO 2 H, and —CO 2 (C1-C6 alkyl),
wherein the compound is present in an amount of from about 0.1% to about 10% by weight of the composition;
c) an un-functionalized polydiene present in an amount of from about 0.01% to about 10% by weight relative to the compound of formula (I) or (II), wherein the un-functionalized polydiene is selected from 1,4-polybutadiene, 1,2-polybutadiene, 1,4-polyisoprene, 3,4-polyisoprene, poly 2,3-dimethyl butadiene, and poly 1,6-hexatriene, or a combination thereof; and
d) a transition metal in a positive oxidation state, wherein the transition metal is present in an amount of from about 10 ppm to about 500 ppm,
wherein the composition is substantially free of a compatibilizer.
2. The composition of claim 1 , wherein the compound is
3. The composition of claim 1 , wherein the un-functionalized polydiene has the number average molecular weight of from about 500 to about 10,000.
4. The composition of claim 1 , wherein the un-functionalized polydiene comprises a plurality of particles with a particle size of from about 10 nm to about 1,000 nm.
5. The composition of claim 1 , wherein the transition metal is cobalt.
6. The composition of claim 1 , wherein the polyester polymer is polyethylene terephthalate.
7. A wall of package comprising at least one layer, wherein the layer comprises the composition of claim 1 .
8. The composition of claim 1 , wherein the compound is of formula:
9. The composition of claim 1 , wherein the compound has a structure represented by a formula:
10. The composition of claim 1 , wherein the compound is:
11. The composition of claim 1 , wherein the composition has an induction period that is less than the induction period of the same composition in the absence of the compound or in the absence of the un-functionalized polydiene.
12. The composition of claim 11 , wherein the composition has no measurable induction period.
13. A composition comprising:
a) polyethylene terephthalate;
b) a compound selected from:
wherein the compound is present in an amount of from about 0.1% to about 10% by weight of the composition;
c) an un-functionalized polydiene selected from 1,4-polybutadiene, 1,2-polybutadiene, 1,4-polyisoprene, 3,4-polyisoprene, poly 2,3-dimethyl butadiene, and poly 1,6-hexatriene, or a combination thereof,
wherein the un-functionalized polydiene is present in an amount of from about 0.01% to about 10% by weight relative to the compound; and
d) cobalt present in an amount of from about 10 ppm to about 500 ppm,
wherein the composition is substantially free of a compatibilizer.
14. The composition of claim 13 , wherein the compound is:
15. The composition of claim 13 , wherein the composition has no measurable induction period.
16. The composition of claim 13 , wherein the un-functionalized polydiene is 1,4-polybutadiene or 1,2-polybutadiene.
17. The composition of claim 13 , wherein the un-functionalized polydiene has the number average molecular weight of from about 500 to about 10,000.
18. The composition of claim 13 , wherein the un-functionalized polydiene comprises a plurality of particles with a particle size of from about 10 nm to about 1,000 nm.
19. The composition of claim 13 , wherein the composition has an induction period that is less than the induction period of the same composition in the absence of the compound or in the absence of the un-functionalized polydiene.
20. A wall of package comprising at least one layer, wherein the layer comprises the composition of claim 13 .