Preceramic polysilazane compositions
US5208192A · kind A · utility
14Cited by
8References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 15, 1991 |
| Grant date | May 4, 1993 |
| Priority date | — |
| Expiry date | Jan 15, 2011 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L83/16
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A crosslinkable composition suitable for use as an infiltrant or as a binder for ceramic powders, such as silicon carbide and/or silicon nitride, in a formulation intended to be injection molded or extruded comprises about 40-70% by weight of a low molecular weight polysilazane, about 15-35% by weight of a medium molecular weight polysilazane, and about 5-30% by weight of an unsaturated organic or organosilicon compound containing at least two alkenyl groups. A preferred unsaturated compound is methylvinylcyclosilazane.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.