POLYCARBOSILANE TREATING METHOD,PRODUCT THEREBY OBTAINED,AND UTILIZATION OF SAID TREATMENT FOR MANUFACTURE OF FIBROUS SILICON CARBIDE CERAMIC PRODUCT IN PARTICULAR

摘要

Process for the treatment of a polycarbosilane with the aim of especially making it infusible and characterised in that it consists in bringing into contact with sulphur in the vapour state at least one polycarbosilane containing at least two, and preferably at least three, IDENTICAL SiH groups per molecule. …??The polycarbosilane thus treated is infusible and insoluble in organic solvents and can be employed for the preparation, by pyrolysis, of ceramic articles, especially fibres, made of silicon carbide.