Infusible preceramic polymers via nitric oxide treatment
US4847027A · kind A · utility
10Cited by
12References
18Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 6, 1987 |
| Grant date | Jul 11, 1989 |
| Priority date | — |
| Expiry date | Jul 6, 2007 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC04B35/62295
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A method is disclosed for the preparation of ceramic materials or articles by the pyrolysis of preceramic polymers wherein the preceramic polymers are rendered infusible prior to pyrolysis by exposure to gaseous nitric oxide. Ceramic materials with low oxygen content, excellent physical properties, and good thermal stability can be obtained by the practice of this invention. This method is especially suited for the preparation of ceramic fibers.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.