Results when IPTS was used as a coupling agent

3 Results when IPTS was used as a coupling agent 

4 FT-IR spectra of the reaction between novalac phenolic resin and 3-isocyanatopropyltriethoxysilane, at various reaction times (a) initial reaction (b)4h(c)8h(d)12h. 

5 The curve of solid-state Si N MR spectra of phenolic hybrid ceramer. 

2270 cm . As the reaction proceeded, the intensity of the NCO group decreased and finally disappeared. Results reveal that the novolac type phenolic resin had reacted with 3-isocyanatopropyltriethoxysilane at various times. 

For 3-isocyanatopropyltriethoxysilanes with mono-, di-, tri-, telra-substituted siloxane bonds were designated as T, T, T. The definition of T is shown in Fig. 18.7. The chemical shifts 56, 65 ppm of T, T, respectively, confirmed 

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