Polymeric hydridochlorosilazanes and processes for their preparation
CA 1313722 C · Owner: Kleiner, Hans-Jerg · Inventors: Gerdau, Thomas; Peuckert, Marcellus; Aldinger, Fritz
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Abstract of the disclosure: HOE 87/F 302 Polymeric hydridochlorosilazanes and processes for their preparation, The invention relates to novel polymeric hydridochlorosilLazanes and a process for their preparation. The compounds according to the invention can be converted into polyhydridosilazanes by reaction with ammonia and these, can in turn be pyrolyzed to ceramic material containing silicon nitride. To prepare the polymeric hydridochlorosilazanes, oligohydridoalkylsilazanes (R1SiHNH)n are reacted with a dichlorohydridoalkylsilane R2SiHCl2.
Read the whole patent
Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Granted February 16, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended February 16, 2010.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.