E. Bacque et al., NOVEL POLYCARBOSILAZANES WITH SI-C AND SI-N BONDS IN THE MAIN-CHAIN, Journal of inorganic and organometallic polymers, 5(2), 1995, pp. 169-182
Novel polycarbosilazanes possessing Si-CH2-Si-N linkage in their backb
one are described. Their preparation involves thermal cross-linking of
ethyl-silylene)-co-(1,3-dimethyl-1,3-disilazane)]s at 300-350 degrees
C. Thus, under controlled conditions, soluble and fusible preceramic
polymers were obtained. Upon pyrolysis, these materials gave good yiel
ds of silicon carbonitride-based ceramics containing low free carbon p
ercentages and controlled nitrogen proportions.