METHOD FOR PRODUCING METALLOPOLYCARBOSILANES Russian patent published in 2019 - IPC C08G77/60 

FIELD: metallurgy.

SUBSTANCE: invention relates to methods for producing metallopolycarbosilanes (M₁M₂PCS). Method is proposed for the production of metallopolycarbosilanes by the interaction in the medium of an organic solvent of a polycarbosilane raw product (PCS raw product, T_size=60–100 °C) with alkyl amide compounds of zirconium and tantalum or hafnium and tantalum of the corresponding formulas: M₁(NR₂)₄, where M₁ – Zr, Hf, R – CH₃, C₂H₅, and M₂(NR¹₂)_5-2z(=NR²)_z, where M₂ – Ta; R¹ – CH₃, R² – t-C₄H₉, z=0.1. Process of obtaining M₁M₂PCS is carried out at variable temperatures from 20 to 280 °C and pressure of 0.2–0.4 kPa.

EFFECT: received M₁M₂PCS are suitable for use as precursors for the production of components (fibers, matrices, coatings, powders, and other) of highly heat-resistant ceramic composites based on silicon carbide modified with refractory metals (Zr, Hf, Ta).

1 cl, 2 dwg, 2 tbl, 5 ex