Polymer precursor for silicon carbide/aluminum nitride ceramics
US5437825A · kind A · utility
10Cited by
3References
5Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 11, 1994 |
| Grant date | Aug 1, 1995 |
| Priority date | — |
| Expiry date | Apr 11, 2014 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L83/16
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A block copolymer is prepared by reacting an aluminumnitrogen polymer and a silazane polymer at a temperature not greater than 400.degree. C. Block copolymers containing alkenyl or alkynyl groups can be crosslinked by supplying energy to generate free radicals, An AlN/SiC-containing ceramic is formed by pyrolyzing the crosslinked block copolymer in a nonoxidizing atmosphere.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.