Polysiloxazanes, silicon oxynitride fibers and processes for producing same
US5166104A · kind A · utility
3Cited by
15References
2Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 6, 1991 |
| Grant date | Nov 24, 1992 |
| Priority date | — |
| Expiry date | Sep 6, 2011 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC04B35/589
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Novel polysiloxazanes comprising [SiH.sub.2).sub.n NH-- and [SiH.sub.2).sub.m O-- as the main repeating units are provided. The polysiloxazanes are produced by reacting a dihalosilane or an adduct thereof with a Lewis base, with ammonia and water vapor or oxygen. From the polysiloxazane, novel silicon oxynitride shapes can be produced and the silicon oxynitride shapes are essentially composed of silicon, nitride (5 mol % or more) and oxygen (5 mol % or more).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.