abstract |
A nitrogen containing hydro:silicon compound comprises mainly silicon di-imide and has a true density of 1.4 -1.9g/cm<3>, a bulk density of 0.045-0.090 g/cm<3>, a specific surface of 600-1000 m<2>/g, an O content less than 3.5 wt.% and a C content less than 0.25 wt.%. |