COMPOSITION FOR SURFACE TREATMENT, METHOD OF PREPARATION OF SAID COMPOSITION AND METHOD OF SURFACE TREATMENT Russian patent published in 2010 - IPC C23C22/78 C23C22/13 

FIELD: machine building.

SUBSTANCE: composition for metal surface treatment includes particles of phosphate of bivalent or three-valence metal with pH in range from 3 to 12. Also diametre of D₅₀ particles of phosphate of bivalent or three-valence metal is 3 mcm or less. Further the composition includes amine derivative, molecular weight of which is 1000 or less, and at least one alkoxide of metal at amount from 0.01 to 100 wt shares per 100 wt shares of metal phosphate solid particles contents. The method of preparing the composition for surface treatment consists in wet crumbling raw material; raw material corresponds to phosphate of bivalent or three-valence metal in dispersed medium at presence of amine derivative, molecular weight of which is 1000 or less, and at least one alkoxide of metal at amount from 0.01 to 100 wt shares per 100 wt shares of solid particles of metal phosphate contents. The method of surface treatment consists in contacting the said composition for surface treatment with surface of metal material.

EFFECT: improved characteristics of treated surface and increased efficiency of further chemical conversion treatment.

9 cl, 1 dwg, 3 tbl, 26 ex