C - Chemistry – Metallurgy – 04 – B
Patent
C - Chemistry, Metallurgy
04
B
C04B 35/58 (2006.01) C01B 21/068 (2006.01) C03C 13/04 (2006.01) C04B 35/64 (2006.01) C04B 41/50 (2006.01) C04B 41/87 (2006.01) C08G 77/54 (2006.01) G02B 1/00 (2006.01) H01P 3/00 (2006.01)
Patent
CA 2041273
- ? - HOE 90/F 129 Abstract of the disclosure Process for the preparation of optical materials from silicon nitride A process for the preparation of optical materials from silicon nitride by pyrolysis of polymeric silazanes, by pressing the pulverulent polymeric silazanes to give moldings before the pyrolysis or first dissolving the polymeric silazanes in an organic solvent, drawing fibers from this solution and pyrolyzing these fibers after evaporation of the solvent, or by melting polymeric silazanes, casting, injection-molding or extruding this melt to give moldings and subsequently pyrolyzing the moldings. An oxidic coating is produced on the silicon nitride molding in an oxygen-containing atmosphere during or after the pyrolysis. The pyrolysis can be carried out at 800-1000°C in an atmosphere containing ammonia or an ammonia/inert gas mixture.
Bruck Martin
Peuckert Marcellus
Scheunemann Ude
Stehlin Thomas
Theis Jurgen
Fetherstonhaugh & Co.
Hoechst Aktiengesellschaft
LandOfFree
Optical moldings made from silicon nitride, and a process... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Optical moldings made from silicon nitride, and a process..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Optical moldings made from silicon nitride, and a process... will most certainly appreciate the feedback.
Profile ID: LFCA-PAI-O-1696327