FIELD: construction.
SUBSTANCE: invention relates to a composition for hydrophobization of construction materials. Composition for hydrophobization of construction materials mainly contains water-soluble block co-condensates of alkali metals propylsiliconates with alkali metals silicates and water, herewith the block co-condensates contain cross-linking structural elements, which form chain-like, cyclic, cross-linked and/or spatially cross-linked structures, and at least one of which has idealized general formula (I): MO[[Si(R1)xY((y-2)-x)O]a[Si(Y)2]b[Si(R1)xY((y-2)-x)O]c]n [[Si(Y)2]m]OM (1), herewith in the structural elements, derivatives of alkoxy silanes and silicates R1 denotes a propyl residue, Y respectively independently denotes OM or OH or in cross-linked and/or spatially cross-linked structures independently denotes O1/2, M independently denotes an alkali metal ion, x respectively independently denotes 1 or 2, y denotes 3 or 4, wherein (x+y)=4; a ≥ 1, c ≥ 0 and b ≥ 0; the number of blocks n ≥ 1, the number of silicate blocks m ≥ 2, wherein (b+m)=v and the ratio of (a+c)/v ≤ 1.
EFFECT: invention also relates to a method of producing the said composition.
16 cl, 2 tbl
