Process for catalytic treatment of a polysilazane containing on average at least two hydrocarbon groups having aliphatic unsaturation per molecule
US4866149A · kind A · utility
4Cited by
18References
16Claims
0Family size
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Key dates
| Filing date | Nov 28, 1986 |
| Grant date | Sep 12, 1989 |
| Priority date | — |
| Expiry date | Nov 28, 2006 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G77/62
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A process for treating a polysilazane, characterized in that a polysilazane possessing on average at least two, and preferably at least three, hydrocarbon groups having aliphatic unsaturation per molecule is treated catalytically in the presence of a catalytically efficient amount of a co-ordination catalyst. The polysilazanes treated in this manner possess high thermal resistance and can be used, in particular, as precursors of ceramic products, with a high yield of inorganic product.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.