Silicon nitride powder and silicon nitride-containing aqueous slurry
US5478784A · kind A · utility
1Cited by
6References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 29, 1994 |
| Grant date | Dec 26, 1995 |
| Priority date | — |
| Expiry date | Nov 29, 2014 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC01P2006/22
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
Disclosed is a powder of silicon nitride particles having a specific surface area of from 5 to 20 m.sup.2 /g. When an aqueous solution of a polyvinyl alcohol having a mean degree of polymerization of X and a degree of saponification of Y (mol %) is adsorbed to the powder, the amount of saturated adsorption at 20.degree. C. is not higher than the amount of adsorption to be represented by: EQU Amount of Adsorption (mg/m.sup.2)=0.000112X+0.523Y/100-0.207 (1) Also disclosed is a low-viscosity silicon nitride-containing aqueous slurry containing said powder.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.