| 发明名称 |
BLOWING AGENT AND PROCESS FOR PREPARING POLYURETHANE FOAM |
| 摘要 |
The use of 1,1-difluoroethane (HFC-152a) and dimethyl ether, optionally with up to 50 mole % of water, as the blowing agent is disclosed as an efficient route to a rigid, closed-cell polyurethan e or polyisocyanurate foam of improved cell structure and excellent insulation properties.
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| 申请公布号 |
CA2115547(C) |
申请公布日期 |
2002.07.16 |
| 申请号 |
CA19922115547 |
申请日期 |
1992.08.19 |
| 申请人 |
E.I. DU PONT DE NEMOURS AND COMPANY |
发明人 |
BARTLETT, PHILIP L.;CREAZZO, JOSEPH A. |
| 分类号 |
C08J9/14;(IPC1-7):C08J9/14;C08L75/04 |
主分类号 |
C08J9/14 |
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