Silazane polymers containing SiCl groups, process for preparing them, ceramic materials containing silicon nitrite which can be prepared therefrom, and the preparation of these materials

摘要

the invention concerns new, sio? - groups containing silazanpolymere, their production, their processing into silicon nitride enthaltendem ceramic material, and this material itself. for the production of sio? - groups are silazanpolymeren containing d, co - chlorsilazane formulawhat m values between 1 and 12, starting - (si) silylrest formula sihru00b9cl, siru00b2ru00b3cl, siru2074clu2082, siru2075cl - chu2082chu2082 - siru2075clu2082, or siclu2082 - chu2082chu2082 - siru2076clu2082 and r = cu2081 - cu2086 - alkyl or cu2082 - cu2086 - alkenyl and independently of each other ru00b9 - ru2076 = h, cu2081 - cu2086 - alkyl or cu2082 - cu2086 - alkenyl, temperatures of 100 to 400u00b0c heated.;the erfindungsgemu00e4u00dfen sio? - groups containing silazanpolymeren through implementation with ammonia in polysilazane converted to silicon nitride containing ceramic materials which can be pyrolysiert.