Thermoset polymeric precursors for aluminum nitride
US5340896A · kind A · utility
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6References
9Claims
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Key dates
| Filing date | Nov 8, 1993 |
| Grant date | Aug 23, 1994 |
| Priority date | — |
| Expiry date | Nov 8, 2013 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G79/10
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
Aluminum-nitrogen polymers comprising a backbone of alternating aluminum and nitrogen atoms both having pendant organic groups, wherein some of the pendant organic groups are unsaturated, are prepared by reacting an unsaturated organic nitrile with a dialkylaluminum hydride. The polymers are crosslinked by supplying energy to generate free radicals. The crosslinked polymers can be pyrolyzed to form an aluminum nitride ceramic.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.