Thermoplastic polymers comprising oxygen scavenging molecules
View Patent ↗The disclosure relates to oxygen scavenging polymer compositions, methods of making the compositions, articles prepared from the compositions, and methods of making the 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 wall of a package comprising at least one layer, said layer comprising a composition, said composition comprising:
(a) a thermoplastic polymer comprising an allylic or benzylic amide compound covalently bonded as a repeating unit in the polymer chain, covalently bonded thereto as a side-chain pendant group, or covalently bonded thereto as an end group of the polymer, double bond; wherein each n is independently 1-5; wherein m is an integer from 0 to 5-n; wherein each X is independently selected from the group consisting of O, S, and NH; wherein each Y, each A, and each B are independently selected from the group consisting of N, CR 1 , and CR 2 ; wherein D, E, and F are independently selected from the group consisting of CH, N, O, and S; wherein each R 1 and each R 2 is independently selected from the group consisting of carboxylic acid, amine, nitro, cyano, hydroxyl, H, alkyl, aryl, electron withdrawing groups, electron releasing groups, and a transition metal; and wherein L is a divalent linking group selected from C2-C12 aliphatic or cyclic ether, C2-C12 aliphatic or cyclic amide, C6 to C12 aromatic amide, C2-C12 aliphatic or cyclic amine, C6-C12 aromatic amine, C2-C12 aliphatic or cyclic ester and C6 to C12 aromatic ester;
wherein the symbol when used in conjunction with a bond line represents a single or a double bond; wherein each n is independently 0-5; wherein m is an integer from 0 to 5-n; wherein each X is independently selected from the group consisting of O, S, and NH; wherein each Y, each A, and each B are independently selected from the group consisting of N, CR 1 , and CR 2 ; wherein D, E, and F are independently selected from the group consisting of CH, N, O, and S; wherein each R 1 and each R 2 is independently selected from the group consisting of carboxylic acid, amine, nitro, cyano, hydroxyl, H, alkyl, aryl, electron withdrawing groups, electron releasing groups, and a transition metal; and wherein L is a divalent linking group selected from C2-C12 aliphatic or cyclic ether, C2-C12 aliphatic or cyclic amide, C6 to C12 aromatic amide, C2-C12 aliphatic or cyclic amine, C6-C12 aromatic amine, C2-C12 aliphatic or cyclic ester and C6 to C12 aromatic ester; or
wherein each X is selected from the group consisting of O, S, and NH; wherein each Y, each A, and each B are independently selected from the group consisting of N and CR 1 ; wherein D, E, and F are independently selected from the group consisting of CH, N, O, and S; wherein the symbol when used in conjunction with a bond line represents a single or a double bond; and wherein each R 1 is independently selected from the group consisting of H, alkyl, aryl, electron withdrawing groups, and electron releasing groups; and
(b) a transition metal in a positive oxidation state, the metal present in an amount of from about 10 ppm to about 400 ppm.
2. The wall of claim 1 , wherein the amide compound is present in the composition in an amount of from 0.1 to about 10 weight percent.
3. The wall of claim 1 , wherein the amide compound is present in the composition in an amount of from 1 to about 3 weight percent.
4. The wall of claim 1 , wherein the amide compound is: