FIELD: chemistry.
SUBSTANCE: agent contains water and fluorine-containing complex titanium and/or zirconium ions, an anticorrosion pigment, an organic polymer or copolymer which is water-soluble or water-dispersible, which as such in an aqueous solution in concentration of 50 wt % has pH ranging from 1 to 3. The agent also contains a polyvinyl amine with molecular weight greater than 100000 g/mol but not greater than 1000000 g/mol, the degree of acylation of the polyvinyl amines being not less than 80%.
EFFECT: invention improves bonding of a hardened ground coating with a metal surface and subsequent organic coatings.
14 cl, 2 tbl
