LAMINATE FILM, PACKAGE, AND METHODS FOR OXYGEN-SENSITIVE MATERIALS

1 . A laminate film for protecting oxygen-sensitive materials, the laminate film comprising:

an ethylene vinyl alcohol polymer layer; and

an oxygen scavenging layer, the oxygen scavenging layer including a blend of:

a first polyamide including a crystallizable polyamide homopolymer, a crystallizable polyamide copolymer, or a blend thereof;

a second polyamide including:

an m-xylylene diamine moiety;

an isophthalic acid moiety; and

a polyamide monomeric diacid precursor moiety;

wherein the oxygen scavenging layer has a thickness of 7.5 microns to 15 microns and

a metal salt catalyst.

2 . The laminate film of claim 1 , wherein the second polyamide includes:

20 mol. % to 70 mol. % of the m-xylylene diamine moiety;

1 mol. % to 30 mol. % of the isophthalic acid moiety; and

20 mol. % to 60 mol. % of the polyamide monomeric diacid precursor moiety.

3 . The laminate film of claim 2 , wherein the second polyamide includes:

45 mol. % to 55 mol. % of the m-xylylene diamine moiety;

4 mol. % to 12 mol. % of the isophthalic acid moiety; and

35 mol. % to 45 mol. % of the polyamide monomeric diacid precursor moiety.

4 . The laminate film of claim 1 , wherein the molar ratio of the polyamide monomeric diacid precursor moiety to the isophthalic acid moiety ranges from 99:1 to 85:15.

5 . The laminate film of claim 1 , wherein the molar ratio of the polyamide monomeric diacid precursor moiety to the isophthalic acid moiety ranges from 98:1 to 88:12.

6 . The laminate film of claim 1 , wherein the first polyamide includes at least one of: Nylon 6, Nylon 66, Nylon 6/66, Nylon 66/6, Nylon MXD6, and Nylon 61, 6T.

7 . The laminate film of claim 1 , wherein the polyamide monomeric diacid precursor moiety includes an adipic acid moiety.

8 . The laminate film of claim 1 , wherein the first polyamide is from 2 wt. % to 90 wt. % of the oxygen scavenging layer and the second polyamide is from 10 wt. % to 98 wt. % of the oxygen scavenging layer.

9 . The laminate film of claim 1 , wherein the first polyamide is from 5 wt. % to 15 wt. % of the oxygen scavenging layer.

10 . The laminate film of claim 1 , wherein the second polyamide is from 85 wt. % to 95 wt. % of the oxygen scavenging layer.

11 . The laminate film of claim 1 , wherein the metal salt catalyst includes an acetate, stearate, propionate, hexanoate, octanoate, benzoate, salicylate or cinnamate of cobalt, copper, or ruthenium.

12 . The laminate film of claim 1 , further including a polyamide layer disposed on a first side of the ethylene vinyl alcohol layer, wherein the polyamide layer includes a third polyamide, and the oxygen scavenging layer is disposed on a second side of the ethylene vinyl alcohol layer opposite the first side of the ethylene vinyl alcohol layer.

13 . The laminate film of claim 12 , wherein the third polyamide includes at least one of: Nylon 6, Nylon 66, Nylon 6/66, Nylon 66/6, Nylon MXD6, and Nylon 61, 6T

14 . The laminate film of claim 12 , further including:

a first polyolefin layer bonded to a side of the polyamide layer opposite the ethylene vinyl alcohol polymer layer by a first tie layer; and

a second polyolefin layer bonded to a side of the oxygen scavenging layer opposite the ethylene vinyl alcohol polymer layer by a second tie layer.

15 . The laminate film of claim 1 , wherein the thickness of the ethylene vinyl alcohol polymer layer is from 2.5 μm to 25 μm.