| 发明名称 |
Blowing agent and process for preparing polyurethane foam. |
| 摘要 |
<p>The use of 1,1-difluoroethane (HFC-152a) with a minimum amount of water, preferably in the absence of water, as the blowing agent is discolored as an efficient route to a rigid closed-cell polyurethane or polyisocyanurate foam of improved cell structure and excellent insulation properties.</p> |
| 申请公布号 |
EP0517392(A1) |
申请公布日期 |
1992.12.09 |
| 申请号 |
EP19920304482 |
申请日期 |
1992.05.18 |
| 申请人 |
E.I. DU PONT DE NEMOURS AND COMPANY |
发明人 |
BARTLETT, PHILIP LEE;CREAZZO, JOSEPH ANTHONY |
| 分类号 |
C08G18/00;C08J9/14 |
主分类号 |
C08G18/00 |
| 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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