Controlled release of water to an oxygen scavenger

摘要

The invention relates to an article for oxygen absorption that is a container containing a water-soluble on source, a water activated oxygen scavenger, and a rupturable canister of hydrated polymer. The hydrated polymer comprises a superabsorbent polymer. The water-soluble on source comprises a salt. The invention in another embodiment relates to a method for providing timed oxygen absorption using the article as above with rupturing of the canister to release the water carrying superabsorbent such that it will contact the oxygen scavenger and on source thereby leading to activating the oxygen scavenger.

主权项

1. An article for oxygen absorption comprising:
a container; a salt disposed in the container; a water activated oxygen scavenger disposed in the container; a rupturable canister disposed in the container; and a solid, non-flowing, hydrated superabsorbent polymer gel that releases liquid water upon contact with the salt in the container, wherein rupturing the canister of hydrated superabsorbent polymer gel causes the hydrated superabsorbent polymer gel to contact the salt disposed in the container and release water from the hydrated superabsorbent polymer gel.