Polymer precursors for aluminum nitride aluminum nitride-containing ceramics from polymeric precursors
US5414050A · kind A · utility
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Key dates
| Filing date | Dec 22, 1993 |
| Grant date | May 9, 1995 |
| Priority date | — |
| Expiry date | Dec 22, 2013 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G79/10
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
An aluminum-nitrogen polymer is prepared by reacting an organic nitrile with a dialkylaluminum hydride to form an organoaluminum imine, and heating the imine to a temperature of 50.degree. to 200.degree. C. The polymeric product can be subjected to an additional heat treatment to form a more highly cross-linked polymer. After either heat treatment the polymeric product can be further reacted with a primary amine or ammonia. The organoaluminum imine as well as the aminated or non-aminated polymers can be pyrolyzed to form an aluminum nitride-containing ceramic.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.