New polysilazane and process for production of the same

Details New polysilazane and process for production of the same New polysilazane and process for production of the same

1988-06-10

1990-06-26

Marquis, Melvyn I.

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

Synthetic resins

From silicon reactant having at least one...

528 28, 528 38, 528 33, C08G 7704

Patent

active

049373048

ABSTRACT:
There is provided a new polysilazane product from a specific precursor. Desired molecular weight of the polysilazane can be obtained by selecting proper amount of a silazane or silylamine compound ##STR1## as an additive. The polysilazane is stable during storage without gelation. The polymerization of the precursor can be carried out without gelation even at a high temperature and hence can be completed in a short time. The polysilazane can be made into ceramics fiber by spinning from a solution and subsequent firing.

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.
patent: 4482669 (1984-11-01), Seyferth et al.

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