Process for manufacturing organic silazane polymers and ceramics

Details Process for manufacturing organic silazane polymers and ceramics Process for manufacturing organic silazane polymers and ceramics

1990-05-22

1992-09-08

Dixon, Jr., William R.

Compositions: ceramic

Ceramic compositions

Refractory

264 65, 501 98, C04B 3558

Patent

active

051458136

ABSTRACT:
A process for manufacturing an organic silazane polymer which comprises: reacting ammonia with a mixture of organosilicic compounds (I) and (II) wherein R is a methyl group, an ethyl group, or a phenyl group, and R.sub.1 is a hydrogen atom or a vinyl group, and X is a chlorine or a bromine atom; then polymerizing the thus obtained silazane compound in the presence of an alkali catalyst. A process for manufacturing a ceramic fiber which comprises melting, spinning, and rendering the organic silazane polymer infusible and then baking the same is also disclosed, as are improved silazane polymers and ceramic articles made therefrom ##STR1##

REFERENCES:
patent: 4681860 (1987-07-01), Bujalski
patent: 4720532 (1988-01-01), Seyferth et al.
patent: 4743662 (1988-05-01), Lipowitz
patent: 4757035 (1988-07-01), Baney
patent: 4761389 (1988-08-01), Rabe et al.
patent: 4772494 (1988-09-01), Porte et al.
patent: 4816497 (1989-03-01), Lutz
patent: 4847027 (1989-07-01), Lu
patent: 4948763 (1990-08-01), Hayashida et al.

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