CONDITIONING METAL SURFACES BEFORE PHOSPHATING THECONDITIONING METAL SURFACES BEFORE PHOSPHATING THEM M

摘要

A highly effective and storage stable conditioning treatment for metal surfaces prior to phosphating them is a suspension in water containing solid microsize particles of at least one phosphate of a divalent or trivalent met al and an accelerant selected from the group consisting of saccharides and thei r derivatives thereof, orthophosphoric acid, condensed phosphoric acids, organophosphonic acids, and polymers of vinyl acetate and/or carboxylic acid . The surface conditioning liquid composition is used simply by effecting contact between the metal and the liquid composition, and can also be used t o simultaneously carry out degreasing, particularly when the conditioning liqu id also contains nonionic or anionic surfactant.