Preceramic organosilazane polymers

Details Preceramic organosilazane polymers Preceramic organosilazane polymers

1984-01-19

1984-11-13

Marquis, Melvyn I.

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

Synthetic resins

At least one aryl ring which is part of a fused or bridged...

525474, 525477, 556410, 556412, 528 28, 528 37, 528 38, C08K 334

Patent

active

044826699

ABSTRACT:
A preceramic polymer which is a polysilazane is described. It is made by reacting an organodihalosilane with ammonia to form an ammonolysis product, and treating the ammonolysis product with a basic catalyst capable of deprotonating an NH group that is adjacent to an SiH group to form said polymer. The polymer is preferrably further treated with an electrophilic reagent. These polymers are useful for making various ceramic products.

REFERENCES:
patent: 2564674 (1951-08-01), Cheronis
patent: 2579418 (1951-12-01), Cheronis
patent: 3036019 (1962-05-01), Molotsky
patent: 3143514 (1964-08-01), Boyer
patent: 4255549 (1981-03-01), Christophliemk et al.

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