FIELD: chemistry.
SUBSTANCE: proposed are described are coated with wedging agents for formation hydraulic fracturing during mining, containing carrier from inorganic material and coating containing polymerisates of one or more ethylene-unsaturated monomers from group, including vinyl ethers of unbranched or branched alkyl carboxylic acids with 1–15 carbon atoms, methacrylates and acrylates of alcohols with 1–15 carbon atoms, vinyl aromatic compounds, olefins, dienes and vinyl halides, and characterized by that the polymerisates are obtained by radical polymerisation in an aqueous medium, copolymerising ethylene-unsaturated and silane-containing monomers in amount of 0.5–20 wt. % in terms of the total weight of the monomers.
EFFECT: coated with propping agents for hydraulic fracture formation during production.
10 cl, 2 tbl
