Method of producing silicon carbide preceramic vinyl-containing

Details Method of producing silicon carbide preceramic vinyl-containing Method of producing silicon carbide preceramic vinyl-containing

1987-09-04

1989-04-25

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...

525474, 528 10, 556430, 556480, C08F28300

Patent

active

048249181

ABSTRACT:
Vinyl-containing polysilanes are described wherein the vinyl groups are attached to endblocking sites of intermediate reactivity. These vinyl-containing polysilanes are prepared by reacting a halogen-endblocked polysilane with, first, a non-vinyl-containing Grignard reagent or a non-vinyl organolithium compound whereby the most reactive halogen endblocking groups are replaced; then, second, reacting the resulting polysilane with vinyl Grignard reagent or vinyllithium whereby the halogen endblocking groups of intermediate reactivity are replaced; and, third, reacting the resulting polysilane with a non-vinyl-containing Grignard reagent or a non-vinyl organolithium compound whereby the least reactive halogen endblocking groups are replaced. The vinyl-containing polysilanes can be coverted to ceramic materials, including ceramic fibers, by pyrolysis.

REFERENCES:
patent: Re31447 (1983-11-01), Baney et al.
patent: 4260780 (1981-04-01), West
patent: 4298559 (1981-11-01), Baney et al.
patent: 4310651 (1982-01-01), Baney et al.
patent: 4314956 (1982-02-01), Baney et al.
patent: 4546163 (1985-10-01), Haluska
patent: 4595472 (1986-06-01), Haluska
patent: 4639501 (1987-01-01), Seyferth et al.
Baney, et al.; "Methylchloropolysilane & Derivatives Prepared from the Redistribution of Methylchlorodisilates"; 1983, 2, 859; ORGANOMETALLICS.
West et al.; "Polysilane High Polymers as Precursors to Silicon Carbide"; (1984), 25, 4,; POLYM. PREPR.

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