METHOD OF SEALING PORES IN NATURAL STONE Russian patent published in 2009 - IPC C04B41/49 

FIELD: mining.

SUBSTANCE: invention refers to sealed natural semi-precious stone, to method for its production and to implementation of such stone. According to the method of sealing of natural semi-precious stone there is prepared mixture out of silane according to formula (Z¹)₁Si(OR)₃, where Z¹ - OR or Gly - 3-glycidoloxypropylene and R - are similar or different alkyl residues possessing 1-6 of carbon atoms and water solution of acid or base; then dispersion of particles of oxide Ti, Si, Zr, Al, Y, Sn or Ce in alcohol is introduced into mixture and this mixture is mixed with another silane of formula (Z²)_zSi(OR)_4-z, where R is alkyl residue possessing 1-6 atoms of carbon, Z²=H_aF_bC_n, where a and b are integral numbers, a+b=1+2n, z=1-2, n=1-16, or at Z¹ - Gly Z²- 3-aminepropylene and z=1, and produced composition is introduced into pores accessible from surface and solidified. Sealed natural semi-precious stone and its sealant are produced with this method. Stone is applied at construction of buildings, walls, roofs, floors, at finishing of bathroom units and kitchens or at construction of footpaths.

EFFECT: facilitation of permeability of stone for water steam and impermeability for water containing liquid.

23 cl, 3 tbl, 2 ex