METHOD OF PLATING ON METALLIC SURFACES BY MIXTURE, CONTAINING AT LEAST TWO SILANE Russian patent published in 2009 - IPC C23C22/68 C09D5/08 

FIELD: metallurgy.

SUBSTANCE: invention relates to method of plating on metallic surface by water composition, containing a) no less than one hydrolysing and/or at least partially hydrolysed silane free from fluorine , b) no less than one hydrolysed and/or at least partially hydrolysed silane consisting fluorine, and c) at least one chelate compound of metal and/or d) at least one organic film-forming material, corresponding oligomer, polymer and/or copolymer, herewith relation of organic film-forming material d) to silanes a) and b) in concentrate or in bath is in limits from 0.1:1 up to 10:1, and silanes in composition are soluble in water or become soluble in water in the issue of hydrolysis and/or chemical change, herewith water composition can contain organic solvent and practically full or fully free from compositions of hexavalent chromium.

EFFECT: receiving of ability of plating on metallic surface at high rates from solution practically fully or fully free from compositions of hexavalent chromium.

27 cl, 3 tbl