Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Cellular products or processes of preparing a cellular...
Patent
1996-04-26
1997-12-02
Seidleck, James J.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Cellular products or processes of preparing a cellular...
521131, 521143, 521145, 521146, 521155, 528 44, 528 50, 528 55, 528 58, 252 62, C08J 908
Patent
active
056936850
ABSTRACT:
A thermal insulator of the present invention includes a foam containing solidified CO.sub.2 gas. A method for producing the thermal insulator includes the steps of: mixing a metal compound selected from the group consisting of a metal oxide and a metal hydroxide, water, a polyol component, and an isocyanate component to generate a mixture; foaming the mixture in a container to generate closed-cells made of a water-foamed polyurethane; and allowing CO.sub.2 gas generated during the foaming step to react with the selected metal compound to solidify the CO.sub.2 gas, thereby depressurizing the closed-cells in the closed-celled foam.
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Search Report for European Appl. 94112506.4 mailed Dec. 5, 1994.
Hashida Takashi
Inagaki Fumihiro
Kishimoto Yoshio
Suzuki Masa-aki
Matsushita Electric - Industrial Co., Ltd.
Seidleck James J.
Truong Duc
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