Selectively permeable zeolite adsorbents and sealants made therefrom
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United States of America Patent
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May 24, 1988
Grant Date -
N/A
app pub date -
Oct 16, 1986
filing date -
Oct 16, 1986
priority date (Note) -
Expired
status (Latency Note)
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Abstract
The invention relates to an improved adsorbent, essentially impermeable to oxygen and nitrogen but permeable to water vapor, and to sealants incorporating said adsorbent. The adsorbent comprises outgassed zeolite having pores with apertures large enough to permit entry of gases such as oxygen and nitrogen into the pore spaces and having on its surface, covering the pore apertures, a fluid which is essentially impermeable to nitrogen and oxygen molecules and yet permeable to water vapor. The zeolite adsorbent, and sealants prepared from the zeolite, are particularly useful in the fabrication of thermal insulating glazed windows having a sealed air pocket.
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