Polysilazane and method for synthesis thereof

Details Polysilazane and method for synthesis thereof Polysilazane and method for synthesis thereof

1988-06-10

1990-08-21

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 32, 528 34, 528 38, 528 33, 528 43, C08G 7700

Patent

active

049503812

ABSTRACT:
There is provided a new polysilazane product from a specific precursor. Desired molecular weight of the polysilazane can be obtained by selecting the proper molar ratio of R.sub.1 SiHX.sub.2 and R.sub.2 R.sub.3 SiX.sub.2 as raw materials. 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 ceramic fibers 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.
patent: 4771118 (1988-09-01), Takamizawa et al.

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