Insulating foam of low thermal conductivity and method of prepar

Details Insulating foam of low thermal conductivity and method of prepar Insulating foam of low thermal conductivity and method of prepar

1996-06-28

1997-07-22

Foelak, Morton

Refrigeration

Structural installation

2521813, 2521814, 2521815, 2521817, 521 92, 521 97, 521 98, 521130, 521131, 521155, C08G 1800, C08J 900

Patent

active

056494300

ABSTRACT:
Insulating foam for refrigerators and the like is prepared by blowing in the presence of carbon dioxide as the sole or principal blowing agent. The thermal conductivity of the foam is decreased by sealing said foam in a gas-impervious enclosure with at least one getter, such as an alkaline material, capable of removing carbon dioxide and at least one drying agent which will produce a relative humidity greater than the equilibrium relative humidity over a saturated aqueous solution of the getter, thus removing water without rendering the getter anhydrous. For example, calcium chloride dihydrate may be used when the getter is sodium hydroxide.

REFERENCES:
patent: 5371113 (1994-12-01), Ward, III et al.
patent: 5389695 (1995-02-01), Jaster et al.
patent: 5567739 (1996-10-01), Ward, III et al.

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