Title: Double glazed windows containing a molecular sieve zeolite adsorbent having a preadsorbed low molecular weight polar material

Abstract: An improvement in sealed insulating glass having an adsorbent disposed about all or part of the interior periphery of the glass is described. The improvement lies in employing a molecular sieve zeolite capable of adsorbing water and incapable of or having a very limited capacity for adsorbing nitrogen and oxygen as the adsorbent. This capability is obtained by using a molecular sieve zeolite whose pore size of 3 angstrom units does not adsorb oxygen and nitrogen as well as employing a molecular sieve zeolite whose effective pore diameter of about 4 angstrom units or larger permit the entry of oxygen and nitrogen but which has acquired an ability to suppress such adsorbtion by being pretreated by preadsorbing a minor amount of a low molecular weight polar material such as water vapor, ammonia, methanol etc. Preventing the adsorbtion and desorbtion of oxygen and nitrogen in a double glazed window eliminates pressure variations within the window space created by such gas movement.

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Inventors: Schoofs, Richard J.

Application Number: 900052
Filing Date: 1978-04-26
Publication_date: 1979-05-01
Assignee:
Primary Class(es): 52/172 428/34
Other Classes:
US Patent Ref:

2882243	Apr, 1959	Milton	423/328.
2882244	Apr, 1959	Milton	423/331.
3006153	Oct, 1961	Cook	55/75.
3164453	Jan, 1965	Milton	55/75.
3224167	Dec, 1965	Jones	55/75.
3758996	Sep, 1973	Bowser	52/172.
3868299	Feb, 1975	Ulisch et al.	52/172.

Other Refs:
Primary Examiner: Perham, Alfred C.
Assistant Examiner:
Attorney: Limbach, Limbach & Sutton