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US 5,853,662 AGranted
Method for preserving polished inorganic glass and method for preserving article obtained by using the same
AssigneeMitsubishi Gas Chemical Company, Inc.
InventorTakayuki Watanabe
Life of this patent
Estimating the term…
Abstract
Disclosed is a method for preserving a polished inorganic glass or an article obtained by using the same by enclosing the polished inorganic glass or the article obtained by using the same in a container having a gas barrier property, and then, sealing the container to remove substantially both oxygen and moisture from the container.
Claims22
A compact and easy method for preserving a polished inorganic glass which comprises:
- enclosing a polished inorganic glass in a container having a gas barrier property with an oxygen permeability of 10 ml/.sup.2 .cndot.Day.cndot.atm or below at 25.degree. C. at 60% RH and a water vapor permeability of 1 g/m.sup.2 .cndot.Day or below at 40.degree. C. at 90% RH together with an oxygen absorbent requiring no moisture for absorption of oxygen and a drying agent, and
- then, sealing the container to remove substantially both oxygen and moisture from the container, thereby preventing weathering of the polished glass.
A compact and easy method for preserving an article obtained by using a polished inorganic glass which comprises:
- enclosing an article obtained by using a polished inorganic glass in a container having a gas barrier property with an oxygen permeability of 10 ml/m.sup.2 .cndot.Day.cndot.atm or below at 25.degree. C. at 60% RH and a water vapor permeability of 1 g/m.sup.2 .cndot.Day or below at 40.degree. C. at 90% RH together with an oxygen absorbent requiring no moisture for absorption of oxygen and a drying agent, and
- then, sealing the container to remove substantially both oxygen and moisture from the container, thereby preventing weathering of the polished glass.
Dependencies are inferred from the claim text.