US 5,792,801 A · Thermal insulation foamed material having carbon dioxide absorbents and method for manufacturing same

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.

Claims8

Dependent claims

A method for manufacturing a thermal insulating foamed material comprising steps of:

producing carbon dioxide adsorbents, which include at least one member of hydroxides of alkali metal and hydroxides of alkaline-earth metal and water, and coated with a coating resin film,
mixing said carbon dioxide adsorbents with polyol, catalyst, foam stabilizer, water, volatile blowing agent and polyisocyanate,
producing a foamed polyurethane resin composition having closed cells including carbon dioxide generated by reaction between water and polyisocyanate, and volatile blowing agent, and
adsorbing said carbon dioxide in said closed cells of said foamed polyurethane resin composition by said carbon dioxide adsorbents, so as to despite carbonates and substantially fill said closed cells with said volatile blowing agent.

1 more element

Dependencies are inferred from the claim text.

Facts

Application

08/599,451Filed 22 Jan 1996

Priority

JP 7-00907324 Jan 1995

Granted

11 Aug 1998

Term ends

Not estimatedThe source records don’t support an estimate.

Classification10 codes

C08J 9/009
Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof: use of pretreated compounding…
C08G 18/088
Processes: removal of water or carbon dioxide from the reaction mixture or reaction components
C08G 18/482
Two or more polyethers of different physical or chemical nature: mixtures of polyethers containing at least one polyether containing nitrogen
C08J 9/0066
Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof: use of inorganic compounding ingredients

Thermal insulation foamed material having carbon dioxide absorbents and method for manufacturing same

Life of this patent

Thermal insulation foamed material having carbon dioxide absorbents and method for manufacturing same

Life of this patent

Abstract

Claims8