Preceramic acetylenic polysilanes

Details Preceramic acetylenic polysilanes Preceramic acetylenic polysilanes

1987-08-10

1989-02-21

Marquis, Melvyn I.

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

Synthetic resins

From silicon reactant having at least one...

556430, 556478, 556480, 501 88, 501 97, 501 92, C08G 7700

Patent

active

048066125

ABSTRACT:
Preceramic actylenic polysilanes are described which contain --(CH.sub.2).sub.w C.tbd.CR' groups attached to silicon where w is an integer from 0 to 3 and where R' is hydrogen, an alkyl radical containing 1 to 6 carbon atoms, a phenyl radical, or an --SiR"'.sub.3 radical wherein R"' is an alkyl radical containing 1 to 4 carbon atoms. The acetylenic polysilanes are prepared by reacting chlorine- or bromine-containing polysilanes with either a Grignard reagent of general formula R'C.tbd.C(CH.sub.2).sub.w MgX' where w is an integer from 0 to 3 and X' is chlorine, bromine, or iodine or an organolithium compound of general formula R'C.tbd.C(CH.sub.2).sub.w Li where w is an integer from 0 to 3. The acetylenic polysilanes can be converted to ceramic materials by pyrolysis at elevated temperatures under an inert atmosphere.

REFERENCES:
patent: Re31447 (1982-02-01), Baney et al.
patent: 2554976 (1951-05-01), Burkhard
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: 4639501 (1987-01-01), Seyferth
Baney, et al; "Methylchloropolysilane & Derivatives Prepared from the Redistribution of Methylchlorodisilanes"; 1983, 2, 859; Organometallics.
West, et al; "Polysilane High Polymers as Precursors to Silicon Carbide"; (1984), 25, 4, ;POLYM. PREPR.

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