PROCESS FOR THE PREPARATION OF BORON NITRIDE PRECURSOR BORON-BASED POLYMERS

摘要

The invention relates to a process for the preparation of polymers based on boron and nitrogen, which is characterized in that a) a composition of matter obtained by thermolysis in mass of at least one compound is reacted. of formula 1: BR/ (CF DRAWING IN BOPI) BR/ in which A represents a halogen atom and R a radical chosen from the hydrogen atom, hydrocarbon radicals and organosilyl and hydrogenoorganosilyl radicals, on b) a compound comprising at least one NH 2 group. /P P These polymers can be used for the preparation of ceramic products based on boron nitride.