Hydrosilylation polymerization of 2,4,6-triethynyl-1,3,5-trimethyl-borazine
with m-bis(dimethylsilyl)benzene quantitatively gave a novel borazine-base
d polymer containing carbosilane units. The polymer was soluble in benzene
and THF and was characterized by spectral analyses. Thermogravimetric analy
sis of the polymer was also carried out.