ANTI-CORROSION COMBINED COATING SYSTEM Russian patent published in 2021 - IPC C23C22/82 C23C22/84 C23F11/02 

FIELD: anti-corrosion protection.

SUBSTANCE: invention relates to means of anti-corrosion protection, in particular to inhibited compositions for coating; it can be used to protect products and structures from atmospheric corrosion both during operation and during storage, transportation. The anti-corrosion combined coating system of a steel product contains a phosphate layer with a packed inorganic inhibitor of the anode type, which is obtained by treating the surface of the product with a solution of the phosphating composition “NOTECH” containing an inorganic inhibitor of the anode type, a preservation layer of industrial oil containing a water-oil-soluble corrosion inhibitor H-M-1, or a paint coating with EP-1236 enamel, the first primer layer of which contains a water-oil-soluble corrosion inhibitor H-M-1.

EFFECT: increased efficiency of corrosion protection by using a double inhibited coating system.

1 cl, 3 tbl, 2 ex