US 5547623
METHOD FOR CONTINUOUS SPINNING AND PYROLYSIS OF CERAMIC FILAMENTS FROM A RESIN
Assignee
DOW CORNING CORPORATION, THE
Filed
Aug 21, 1989
Granted
Aug 20, 1996
Location
MIDLAND MI US
Abstract
A resinous organosilicon preceramic polymer is melt spun into filaments which are rapidly cured, continuously gathered into a thread, and pyrolyzed in a continuous process to form ceramic fibers which may be either solid or hollow. The preferred preceramic polymer is hydridopolysilazane and the preferred curing agents are Cl2, HCl, HBr, thionyl chloride and trichlorosilane, followed by treatment with an atmosphere containing water vapor.
Source: Google Patents
35 USC §181 Secrecy Order
Imposed
Mar 30, 1990
Rescinded
Jun 28, 1995
Duration
5 years, 3 months
Inventor
- 1THOMAS D. BARNARD
Record Details
- Patent number
- US 5547623
- Application
- 00739616
- Aerospace match
- No
- Dataset source
- 35 USC §181 SO records
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DOW CORNING CORPORATION, THEBack to patent indexSource: USPTO 35 USC §181 secrecy order records