Polymer precursors for aluminum nitride
US5276105A · kind A · utility
7Cited by
5References
14Claims
0Family size
Inventor
Key dates
| Filing date | Jul 2, 1992 |
| Grant date | Jan 4, 1994 |
| Priority date | — |
| Expiry date | Jul 2, 2012 |
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. for at least 2 hours. 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.