PRECERAMIC COMPOSITIONS AND CERAMIC PRODUCTS
Assignee
ETHYLE CORPORATION
Filed
Jan 10, 1990
Granted
Jan 12, 1993
Location
BIRMINGHAM MI US
Abstract
Preceramic polymer dispersions which have particular utility in providing protective ceramic coatings on carbon/carbon composites, graphite, carbon fibers, and other normally oxidizable materials are prepared by dispersing about 0-3 parts by weight of aluminum-silicon eutectic, about 0-4 parts by weight of silicon carbide, about 1.5-5 parts by weight of silicon boride, and about 0.4-5 parts by weight of silicon metal in a solution of an organoborosilazane polymer in an organic solvent, the organoborosilazane polymer being the product obtained by reacting about 0.25-20 parts by weight of a trialkoxy-, triaryloxy-, or tri(arylalkoxy)boroxine with one part by weight of a polysilazane.
Source: Google Patents
35 USC §181 Secrecy Order
Imposed
Jun 18, 1990
Rescinded
Jun 18, 1992
Duration
2 years
Inventor
- 1LEONARD M. NIEBYLSKI
Record Details
- Patent number
- US 5179048
- Application
- 07462791
- Aerospace match
- No
- Dataset source
- 35 USC §181 SO records