Selectively permeable zeolite adsorbents and sealants made therefrom
US4835130A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jan 20, 1988 |
| Grant date | May 30, 1989 |
| Priority date | — |
| Expiry date | Jan 20, 2008 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE06B3/677
- WIPO fieldChemical engineering
- WIPO sectorChemistry
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.