发明名称 |
Closed cell polyimides |
摘要 |
Closed cell polyimide foams. Methods of making such foams from precursors derived from a benzophenonetetracarboxylic acid diester and a mixture of diamines in which the precursor is molded to shape and cured, hydrated, and heated until a porous, closed cell structure develops.
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申请公布号 |
US4319000(A) |
申请公布日期 |
1982.03.09 |
申请号 |
US19810248893 |
申请日期 |
1981.03.30 |
申请人 |
INTERNATIONAL HARVESTER COMPANY |
发明人 |
GAGLIANI, JOHN;LONG, JOHN V. |
分类号 |
C08G73/10;C08J9/12;(IPC1-7):C08G12/12 |
主分类号 |
C08G73/10 |
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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