CPC C09K 15/20 (2013.01) [C23F 11/147 (2013.01)] | 11 Claims |
1. Polyurea treatment method for corrosion protection of a metallic substrate in contact with an aqueous corrosive medium, comprising:
dissolving particles of a polyurea in a polar aprotic solvent selected from the group consisting of N-methyl-2-pyrrolidone, dimethylformamide, dimethyl sulfoxide, and 1,3-dimethyl-2-imidazolidinone to form a treatment mixture;
mixing the treatment mixture with the aqueous corrosive medium in contact with the metallic substrate,
wherein the treatment mixture is devoid of epoxy ester resin; and
the polyurea comprises reacted units of a diaminoalkane and a diisocyanate.
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