Claims
- 1. An insulating article comprising:
- a gas-impervious enclosure;
- an insulating formable resinous foam in said enclosure;
- at least one gas in said enclosure having a thermal conductivity less than that of carbon dioxide;
- a first composition in said enclosure, comprising at least one of a solid alkaline getter for carbon dioxide and reaction product of said getter with carbon dioxide; and
- a second composition in said enclosure, comprising at least one of dying agent as described hereinabove and a reaction product of said dying agent with water.
- 2. An article according to claim 1 wherein the foam is polyurethane foam.
- 3. An article according to claim 1 wherein said gas is krypton or xenon.
- 4. An article according to claim 2 wherein the alkaline reagent is sodium hydroxide.
- 5. An article according to claim 5 wherein the relative humidity over the drying agent is less than about 15%.
- 6. An article according to claim 5 wherein the drying agent is calcium chloride dihydrate.
- 7. An article according to claim 2 wherein the blowing agent consists of carbon dioxide.
- 8. An article according to claim 2 wherein the molar ratios of getter to theoretical carbon dioxide and of drying agent to theoretical water formed are in the range of about 1.1-2.0:1.
- 9. An article according to claim 8 wherein the getter and drying agent are introduced at the time of foam production.
- 10. A refrigeration apparatus insulated by an article according to claim 1.
- 11. A refrigeration apparatus insulated by an article according to claim 2.
Parent Case Info
This application is a division of Ser. No. 08/491,826 filed Jun. 19, 1995.
US Referenced Citations (3)
Number |
Name |
Date |
Kind |
5371113 |
Ward, III et al. |
Dec 1994 |
|
5389695 |
Jaster et al. |
Feb 1995 |
|
5567739 |
Ward, III et al. |
Oct 1996 |
|
Divisions (1)
|
Number |
Date |
Country |
Parent |
491826 |
Jun 1995 |
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