Polysiloxazanes, silicon oxynitride fibers and processes for producing same
US4965058A · kind A · utility
4Cited by
5References
3Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 19, 1989 |
| Grant date | Oct 23, 1990 |
| Priority date | — |
| Expiry date | Jul 19, 2009 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G77/54
- 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 mols % or more) and oxygen (5 mol % or more).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.