Preceramic silicon polymers

Details Preceramic silicon polymers Preceramic silicon polymers

C - Chemistry, Metallurgy

08

G

C08G 77/38 (2006.01) C08G 77/60 (2006.01) C08G 77/62 (2006.01)

Patent

CA 2163266

Novel methods for the preparation of polymers useful as precursors to ceramic materials by catalytic activation of Si-H bonds are disclosed. The methods comprise reacting, in the presence of a catalyst effective to activate Si-H bonds, Si-N bonds, or both, and/or a reactive solvent, a polymer in the form of a polysilane, polysilazane, polysiloxane or polycarbosilane with a reactant having the structural formula R-X-H, wherein X is NR' or O, R is H, organic, silyl, siloxyl, silazanyl or carboxilyl and may contain at least one additional X-H group, and R' is H, amino, silyl or silazanyl, to produce a modified polymer containing at least one Si-X bond. Polymers produced by these methods are also disclosed.

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