COMPOSITION FOR PREPARARATION OF METAL SURFACE BEFORE APPLICATION OF COATING AND PROCEDURE FOR PREPARING METAL SURFACE BEFORE APPLICATION OF COATING

摘要

FIELD: metallurgy.;SUBSTANCE: composition for preparation of metal surface consists of compound of titanium phosphate, has pH from 3 to 12, and additionally contains at least one compound chosen from group consisting of benzoic acid, salicylic acid, gallium acid, lignosulphonic acid and tannic acid and/or at least one substance chosen from group consisting of dispersed in water particles of resin, clay compound, fine particles of oxide and thickener soluble in water and amino-compound represented with formula (1): , where each of groups R¹, R² and R³ is chosen from group consisting of atom of hydrogen of linear or branched alkyl group having from 1 to 10 of atoms of carbon, and linear or branched alkyl group having from 1 to 10 atoms of carbon and having polar group in main chain, also, R¹, R² and R³ are not all are atoms of hydrogen.;EFFECT: composition is continuously kept in form of dispersion wherein compound of titanium phosphate stably exists and reveals good stability at treatment of metal surface before application of coating.;6 cl, 2 tbl, 17 ex