| abstract |
(57) [Summary] [Structure] Formula (I) (R 1 each represents a methyl group or a chlorine atom) 2,4,6-trisilaheptane alone or a mixture thereof with dimethyldichlorosilane, or 2,4,6-trisilaheptane, dimethyldichlorosilane. And R 2 SiC A polysilametylenosilane polymer in which a mixture of l 3 (R 2 represents a methyl group, a hexyl group, an octadecyl group, a vinyl group, an allyl group, a phenyl group or a trimethylsilyl group) is subjected to a dechlorination reaction using an alkali metal. Alternatively, a method for producing a copolymer. [Effect] The obtained copolymer is useful as a precursor of silicon carbide used for precision ceramic materials. |