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US 5,399,289 AGranted
Compositions, articles and methods for scavenging oxygen which have improved physical properties
AssigneeW. R. Grace & Co.-Conn.
InventorsDrew V. Speer, Charles R. Morgan, William P. Roberts, Ram K. Ramesh
Life of this patent
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Abstract
A composition for scavenging oxygen is disclosed. The composition comprises an ethylenically unsaturated hydrocarbon polymer which has 0.01-1.0 equivalents of carbon-carbon double bonds per 100 g of polymer and a transition metal catalyst and can be incorporated into various types of layers. The composition has an elongation-at-break of at least 20% and retains at least 50% of its original tensile strength after oxygen scavenging has occurred.
Claims4
A composition suitable for scavenging oxygen, wherein the composition consists essentially of
- (a) an ethylenically unsaturated hydrocarbon polymer or unsaturated polymer blend which has 0.01-1.0 equivalents of carbon-carbon double bonds per 100 g of the composition,
- (b) a transition metal catalyst and wherein the composition scavenges at least 230 cc oxygen/(m.sup.2.mil) in thirty days, and also retains at least 50% of tensile strength and 20% of original elongation-at-break after at least 230 cc oxygen/(m.sup.2.mil) has been absorbed.
Dependencies are inferred from the claim text.