Two-stage cure polyimide oligomers
US7994274B2 · kind B2 · utility
1Cited by
20References
15Claims
0Family size
Assignee
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Key dates
| Filing date | Dec 23, 2005 |
| Grant date | Aug 9, 2011 |
| Priority date | — |
| Expiry date | Sep 18, 2026 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08J2379/08
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A method for using citraconic anhydride and itaconic anhydride as addition cure end caps in reactions for forming polyamic acid oligomers and polyimide oligomers, is provided. Prepregs and high temperature adhesives made from the resulting oligomers, as well as, high temperature, low void volume composites made from the prepregs, are also provided.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.