ORGANOSILICON POLYMERS COMPRISING METAL CLUSTERS, AND METHOD OF PREPARING THEREOF Russian patent published in 1999 - IPC

FIELD: chemistry of polymers. SUBSTANCE: present invention describes organosilicon polymers comprising metal clusters of general formula: [-(R¹)Si(R²)-E-)_nEKл-]_m wherein E is Si(R³R⁴), NR³; B is -B-NR⁵, (B-C-N), (Al-C-N), cyclo-(SiR³R⁴NR⁵)_x, (CB₁₀H₁₀C-O-SiR³R⁴), p-C₆H₄, (CH₂)_y; n is 5; m is 0.001-1; x is 3,4,5; y is 2-4; R¹-R⁵ are H, CH₃, C₂H₅, Ph, CH=CH₂, CH₂CH=CH₂; Cl are clusters of transition metals of groups III-VIII and subgroup of group I. These clusters are new type of ceramic-forming monophase organosilicon polymers containing metals uniformly distributed in polymer structure without presence of oxygen. Said polymers have pronounced capacity of forming fibers and films from solutions or melts and are hardenable during thermochemical treatment. When subjected to pyrolysis, they give high yield of ceramic residue (up to 78 wt %). EFFECT: improved properties of the organosilicon polymers. 4 cl, 11 ex, 1 tbl