US 4889899
METHOD OF PRODUCING SILICON CARBIDE PRECERAMIC VINYL-CONTAINING POLYMERS
Assignee
DOW CORNING CORPORATION
Filed
Sep 8, 1987
Granted
Dec 26, 1989
Location
BAY CITY MI US
Abstract
A method is described to prepare preceramic polysilanes which contain at least one weight percent vinyl. To ensure the survival of the vinyl groups in the polysilane the reaction and process conditions must be carefully controlled. The vinyl-containing polysilanes can be formed into fibers, cured either thermally or by UV irradiation, and then pyrolyzed to form ceramic fibers. Thermal curing and pyrolysis can be combined into a single process step.
Source: Google Patents
35 USC §181 Secrecy Order
Imposed
Jun 24, 1988
Rescinded
Aug 15, 1989
Duration
1 year, 1 month
Inventor
- 1DUANE R. BUJALSKI
Record Details
- Patent number
- US 4889899
- Application
- 07094347
- Aerospace match
- No
- Dataset source
- 35 USC §181 SO records
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Back to patent indexSource: USPTO 35 USC §181 secrecy order records