Process for preparing organosilazanes

Details Process for preparing organosilazanes Process for preparing organosilazanes

1989-06-30

1991-04-23

Marquis, Melvyn I.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

From silicon reactant having at least one...

528 10, 528 31, 528 38, C08G 7706

Patent

active

050101579

ABSTRACT:
Organosilazanes having higher prepolymerization molecular weights are prepared by subjecting to elevated temperatures in a dry atmosphere the total reaction mixture resulting from the ammonolysis of an organohalosilane in an organic solvent. Their higher molecular weights expedite the polymerization of the organosilazanes to preceramic polysilazanes.

REFERENCES:
patent: 4482669 (1984-11-01), Seyferth et al.
patent: 4771118 (1988-09-01), Takamizawa et al.
Blum et al., Catalytic Methods for the Synthesis of Oligosilazanes, Organometallics, 1986, 5, 2081-2086.
Zoeckler et al., Homogeneous Catalytic Formation of Carbon-Nitrogen Bonds, J. Org. Chem. 1953, 48, 2539-2543.

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