Colored oxygen scavenging polymers
DC CAFCFirst Claim
1. A melt blended resin for packaging articles comprising:
- a base polymer, oxidizable organic polymer, transition metal catalyst, and a colorant, such that an article made from said melt blended resin has a catalyst deactivation factor of less than 0.25, and further wherein said base polymer is selected from the group consisting of polyethylene, polyester, polyvinyl chloride, polyvinylidene chloride, ethylene copolymers, and blends thereof.
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Abstract
The present invention relates to a melt blend of a base polymer, an oxidizable organic polymer, a transition metal salt catalyst and a colorant that does not completely deactivate the catalyzed oxidation. A preferred colorant, yields in an article made from the polymer melt blend a Catalyst Deactivation Factor (CDF) of less than about 0.25, preferably less than 0.15, more preferably less than 0.1, and most preferred less than 0.05. The present invention also comprises a colored monolayer article having the described CDF, such as a film, thermoformed tray, or blow molded container, that has active oxygen scavenging properties. The colorant, after melt blending a base polymer, an oxidizable organic polymer, a transition metal catalyst, does not increase the binding energy of the transition metal catalyst ion by more than 1 eV.
36 Citations
15 Claims
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1. A melt blended resin for packaging articles comprising:
- a base polymer, oxidizable organic polymer, transition metal catalyst, and a colorant, such that an article made from said melt blended resin has a catalyst deactivation factor of less than 0.25, and further wherein said base polymer is selected from the group consisting of polyethylene, polyester, polyvinyl chloride, polyvinylidene chloride, ethylene copolymers, and blends thereof.
- View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A monolayer film, having an oxygen permeation rate of less than 0.01 (cc(stp)·
- cm)/(m2·
atm·
day), said film formed from a melt blend of a base polymer, oxidizable organic polymer, transition metal catalyst, and a colorant, wherein said base polymer is selected from the group consisting of polyethylene, polyester, polyvinyl chloride, polyvinylidene chloride, ethylene copolymers, and blends thereof.
- cm)/(m2·
-
14. A polymer blend for packaging articles comprising:
- a melt blend of a base polymer, oxidizable organic polymer, transition metal catalyst, and a colorant, such that said blend does not increase the binding energy of the transition metal catalyst ion by more than 1 eV, and further wherein said base polymer is selected from the group consisting of polyethylene, polyester, polyvinyl chloride, polyvinylidene chloride, ethylene copolymers, and blends thereof.
- View Dependent Claims (15)
Specification