| abstract |
Herein are disclosed metal oleate, especially cobalt oleate, masterbatch compositions useful in preparing oxygen scavenging packaging articles, as well as methods of making the masterbatch compositions. In one embodiment, the masterbatch comprises porous beads comprising a first polymer; the metal oleate dispersed in the porous beads; and a second polymer or a photoinitiator, in powder form, dispersed on the exteriors of the porous beads. In another embodiment, the masterbatch comprises a metal oleate and a polymer, wherein the metal oleate is in the form of pellets or a powder, and the polymer is in the form of a powder dispersed on the exteriors of the pellets or powder. In still another embodiment, the masterbatch comprises a metal oleate and a polymer, wherein the metal oleate and the polymer are compounded. In still another embodiment, the masterbatch is prepared from a composition comprising a metal oleate and a polymer, wherein the polymer is in the form of a container and the metal oleate is contained within the container. |