发明名称 |
Method of preparing polyurethane foam of low thermal conductivity |
摘要 |
Closed cell polyurethane foams, useful as thermal insulation for refrigerators and the like, are prepared by blending a polyisocyanate, a polyol and a suspension of at least one solid alkaline reagent, preferably sodium hydroxide, in an inert carrier liquid having a suitable viscosity. Preferred carrier liquids include polyepoxides and polyoxyalkylenediamines. The alkaline reagent reacts with and removes the carbon dioxide employed as a blowing agent, thus decreasing the thermal conductivity of the foam.
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申请公布号 |
US5530035(A) |
申请公布日期 |
1996.06.25 |
申请号 |
US19940268082 |
申请日期 |
1994.06.15 |
申请人 |
GENERAL ELECTRIC COMPANY |
发明人 |
FERRERO-HEREDIA, MONICA A.;DAY, JAMES;GAINES, JR., GEORGE L. |
分类号 |
C08J9/02;C08G18/00;C08G18/08;C08G101/00;C08J9/00;C08J9/12;C08J9/14;H01B3/30;(IPC1-7):C08G18/00 |
主分类号 |
C08J9/02 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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