Method for aqueous processing of AlN and compositions therefrom
US5234676A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Apr 16, 1992 |
| Grant date | Aug 10, 1993 |
| Priority date | — |
| Expiry date | Apr 16, 2012 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC01B21/0728
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
An aqueous composition containing aluminum nitride powder which exhibits a reduced tendency for hydrolysis of the aluminum nitride contained therein. The aqueous composition comprises (a) a liquid medium containing water, (b) aluminum nitride powder, and (c) a combination of buffering agents which controls the pH of water from about 5.5 to about 7.5, wherein the combination of buffering agents is employed at a lower weight percent concentration than that of the aluminum nitride powder. In another embodiment of the invention, a method of processing aluminum nitride powder in water which exhibits a reduced tendency for hydrolysis of the aluminum nitride is disclosed, which method involves mixing the above-described aqueous composition.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.