Stock material or miscellaneous articles – Hollow or container type article – Polymer or resin containing
Patent
1991-07-11
1992-09-01
Robinson, Ellis P.
Stock material or miscellaneous articles
Hollow or container type article
Polymer or resin containing
428 367, 428 3691, 428 64, 428218, 428246, 428252, 428286, 428287, 4283155, 4283157, 4283159, 428447, 428448, 428482, 428283, 428 365, 215261, 215228, 215347, 215348, 215349, 215350, 206204, 2064841, 2064842, B65D 5300, B65D 8126
Patent
active
051437635
ABSTRACT:
An oxygen scavenger comprises an oxygen absorbent composition and an oxygen permeable film covering the oxygen absorbent composition and including an asymmetric porous membrane whose outer surface portion in the thickness direction of the asymmetric porous membrane is formed as a dense skin layer. Since the dense skin layer is very thin, the oxygen permeability to the oxygen absorbent composition through the oxygen permeable film can be maintained sufficiently high. At the same time, since the dense skin layer has a sufficiently high barrier property as well as a high oxygen permeability, contact of the substances stored in a container with the oxygen absorbent composition can be surely prevented. The substances stored in the container attached with the oxygen scavenger can be prevented from deterioration due to the oxygen present in the container by a high oxygen absorption ability of the scavenger, and maintained in a good or fresh condition for a long term.
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"Composite Hollow Fiber Membranes for Gas Separation: The Resistance Model Approach", Jay M. S. Henis et al., Journal of Membrane Science, 8 (1981) 233-246.
Aoki Takao
Himeshima Yoshio
Sakuma Isamu
Shirakura Akira
Uemura Tadahiro
Dye Rena L.
Miller Austin R.
Robinson Ellis P.
Toray Industries Inc.
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