Patent ID: 8026329
Filing Date: 2011-09-27
Classification: C08G

Abstract:
1. A method of producing polycarbosilane, comprising: dispersing metal sodium in an organic solvent; pre-mixing an allylmethyldichlorosilane monomer with a phenylmethyldichlorosilane monomer, and injecting the mixed monomer solution into the solution in which the metal sodium is dispersed; polymerizing polyallylphenylsilane by reaction of the mixed solution of the monomers and the metal sodium at 90 to 130° C.; separating a precipitate of the polymerized polyallylphenylsilane; performing a first conversion reaction on the separated polyallylphenylsilane precipitate under 5 to 30 atm at 300 to 370° C. for 5 to 20 hours; and performing a second conversion reaction on the resulting product under 5 to 30 atm at 400 to 470° C. for 5 to 20 hours, wherein the operations are performed in an inert gas atmosphere.