Curing preceramic polymers by exposure to nitrogen dioxide
US5051215A · kind A · utility
10Cited by
18References
16Claims
0Family size
Assignee
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Key dates
| Filing date | Mar 21, 1990 |
| Grant date | Sep 24, 1991 |
| Priority date | — |
| Expiry date | Mar 21, 2010 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC04B35/62295
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A rapid method of infusibilizing (curing) preceramic polymers comprising treatment said polymers with gaseous nitrogen dioxide. The infusibilized polymers may be pyrolyzed to temperatures in excess of about 800.degree. C. to yield ceramic materials with low oxygen content and, thus, good thermal stability. The methods are especially useful for the production of ceramic fibers and, more specifically, to the on-line production of ceramic fibers.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.