Thermal insulating foamed material and method of manufacturing t

Details Thermal insulating foamed material and method of manufacturing t Thermal insulating foamed material and method of manufacturing t

1996-01-26

1998-02-24

Cooney, Jr., John M.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Cellular products or processes of preparing a cellular...

521 97, 521 98, 521126, 521130, 521133, 521137, 521155, 521157, 521170, 521186, C08J 908

Patent

active

057212856

ABSTRACT:
The present invention provides a thermal insulating foamed material with excellent thermal insulating properties and a method of manufacturing the same. The method comprises the steps of: concurrently mixing and blowing a polyurethane material to produce a foamed polyurethane resin composition with a multiplicity of closed cells, the polyurethane material including a reactive blowing agent, a volatile compound having a boiling point of not higher than 150.degree. C. and a molecular weight of not less than 70, an epoxy compound, and a carbon dioxide fixation catalyst, wherein the closed cells are filled with the volatile compound and carbon dioxide produced by a reaction of the reactive blowing agent with a polyisocyanate; and allowing the carbon dioxide to chemically react with epoxy groups of the epoxy compound in the presence of the carbon dioxide fixation catalyst to form a solid or liquid cyclic carbonate. The method gives a foamed material with the closed cells substantially filled with vapor of the volatile compound at a partial pressure of at least 5 mmHg at 25.degree. C.

REFERENCES:
patent: 5346928 (1994-09-01), De Vos et al.

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