METHOD TO PROCESS POLYORGANOSILAZANES AND/OR POLYORGANO(DISILYL)SILAZANES BASED ON PROCESSING POLYORGANOSILAZANES WITH A CATALYTIC SYSTEM COMPRISING AN IONIC MINERAL SALT AND A COMPLEXING AGENT

摘要

ABSTRACT CONTENT OF THE INVENTION said society: Rhone-Poulenc SPECIALTY CHEMICALS POLYORGANOSILAZANES METHOD FOR PROCESSING AND / OR Polyorgano (disilyl) SILAZANES BY TREATMENT POLYORGANOSILAZANES BY CATALYTIC SYSTEM INCLUDING SALT IONIC MINERAL COMPOUND AND COMPLEXING Invention of Messrs. DOOR Hugues and Lebrun Jean Jacques The present invention relates to a polyorganosilazanes method of treating and / or polyorgano (disilyl) silazanes with an effective amount of a catalyst system comprising an ionic inorganic salt of formula M + A- and a compound complexing the cation M + may at least partially dissociate you said salt selected from trisoxaalkylamines, ethers crowns and cryptands. Polysilazanes thus treated exhibit a high heat resistance and can be used, particularly after pyrolysis, as precursors of ceramic products.