SILYL- AND DISILANYL-1,3-BUTADIYNE POLYMERS FROM HEXACHLORO-1,3-BUTADIENE

摘要

organosilane polymer having scouring units silylene-1,3-butadiyne and / or units of disilylène-1,3-butadiyne are prepared in a synthesis carried out in the same crucible from hexachlorobutadiene. Depending organic substituents (R and R '), these polymers have useful film properties and are converted into ceramic silicon carbide by heating with high and very uniform char yields. These polymers may also be stretched to be transformed into fibers. The polymers are thermally crosslinked above 100 ° C.