Thermal insulating foamed material having carbon dioxide adsorbents and method for manufacturing the same
First Claim
1. A thermal insulating foamed material, which comprises a foamed polyurethane resin composition having closed cells, which has therein carbon dioxide adsorbents formed by at least one member of carbonates of alkali metal and carbonates of alkaline-earth metal, covered with resin coating, and has volatile blowing agent in said closed cells.
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Abstract
A thermal insulating foamed material is a polyurethane foam having closed cells, and produced by mixing, agitating and foaming a polyol, a polyisocyanate, a foam stabilizer, a catalyst, a blowing agent and a carbon dioxide adsorbent. The carbon dioxide adsorbent is produced by mixing and granulating powders of at least one member of alkali metal hydroxides and alkaline-earth metal hydroxides and organic or inorganic powders having a water absorbing property and soaked with water in advance, and formed by a resin film, such as a methacrylic acid ester, which is permeable to carbon dioxide but hardly permeable to water.
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Citations
20 Claims
- 1. A thermal insulating foamed material, which comprises a foamed polyurethane resin composition having closed cells, which has therein carbon dioxide adsorbents formed by at least one member of carbonates of alkali metal and carbonates of alkaline-earth metal, covered with resin coating, and has volatile blowing agent in said closed cells.
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7. A thermal insulation cabinet comprising:
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a first wall member, a second wall member and a foamed polyurethane resin composition which is filled in a space formed between said first wall member and said second wall member, has therein carbon dioxide adsorbents formed by at least one member of carbonates of alkali metal and carbonates of alkaline-earth metal, covered with resin coating, and has volatile blowing agent in closed cells of said foamed polyurethane resin composition. - View Dependent Claims (8, 9, 10, 11, 12, 17, 18, 19, 20)
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Specification