Organic amide-modified polysilazane ceramic precursors

Details Organic amide-modified polysilazane ceramic precursors Organic amide-modified polysilazane ceramic precursors

1989-11-27

1991-07-16

Marquis, Melvyn I.

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

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

501 92, 528 26, 528 28, C08F28300

Patent

active

050326490

ABSTRACT:
Silazane polymers are prepared by (1) reacting ammonia with one or more halogenated organic silicon compounds containing an Si-H bond to produce a silazane ammonolysis product, (2) mixing the ammonolysis product with 0.1% to 30% by weight of an organic amide or thioamide, and (3) heating to a temperature of 30.degree. to 300.degree. C. Silazane polymers containing alkenyl or alkynyl groups can be cured by supplying energy to generate free radicals. The cured or uncured polymers can be pyrolyzed to produce silicon nitride-containing ceramic materials.

REFERENCES:
patent: 4482669 (1984-11-01), Seyferth et al.
patent: 4774312 (1988-09-01), Burns
patent: 4929704 (1990-05-01), Schwark

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