REACTION OF 3-AMINOPROPYLTRIETHOXYSILANE WITH TRIPHENYLPHOSPHATE

Владимир Викторович Семенов

Аннотация


Interaction of 3-aminopropyltriethoxysilane RNH2 [R = (EtO)3SiCH2CH2CH2] with triphenylphosphate (PhO)3P=O proceeds at temperature 180–200 оС and leads to formation of quaternary ammonium salt of phenylphosphoric acid [PhOP(O)O2]2-[PhH2NR]2+, which turns into liquid silicon-containing oligoamidophosphates  RNH[P(O)(OPh)NR]nP(O)(OPh)NHR and phenol at high temperature. The latter transesterifies the original 3-aminopropyltriethoxysilane and the obtained products. With the use of high-temperature vacuum rectification liquid oligomers and the solid cross-linked polymer have been isolated. Heating of the solid polymer up to 1000 оС in inert atmosphere results in the amorphous phase, containing SiO2 and NPO. The reactions of 3-aminopropyltriethoxysilane with triphenylphosphate and trimethylphosphate have been compared.

Ключевые слова


3-aminopropyltriethoxysilane; triphenylphosphate; trimethylphosphate; oligomers; thermal transformations

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Литература


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