Dehydrocoupling treatment and hydrosilylation of silicon-contain

Details Dehydrocoupling treatment and hydrosilylation of silicon-contain Dehydrocoupling treatment and hydrosilylation of silicon-contain

1997-06-16

1999-11-23

Marquis, Melvyn I.

Compositions: ceramic

Ceramic compositions

Carbide or oxycarbide containing

501 92, 528 15, 528 17, 528 19, 528 28, 528 29, 528 31, 528 32, 528 12, 528 13, 528 16, 528 21, 528 23, C04B 3552

Patent

active

059900245

ABSTRACT:
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 carbosilyl 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.

REFERENCES:
patent: 4612383 (1986-09-01), Laine et al.
patent: 4952715 (1990-08-01), Blum et al.
patent: 5008422 (1991-04-01), Blum et al.
patent: 5128494 (1992-07-01), Blum
patent: 5639844 (1997-06-01), Blum et al.

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