Anticorrosion means and composition containing same

Details Anticorrosion means and composition containing same Anticorrosion means and composition containing same

C - Chemistry, Metallurgy

23

F

31/35

C23F 11/167 (2006.01) C23F 11/08 (2006.01) C23F 11/18 (2006.01)

Patent

CA 1202169

-18- PATENT APPLICATION entitled : Anticorrosion means and composition contai- ning same. In the name of : UNION CHIMIQUE ET INDUSTRIELLE DE l'OUEST ABSTRACT OF THE DISCLOSURE This invention relates to a corrosion inhibitor for protecting metallic surfaces which are in contact with water, in particular circuits, apparatus and devices which use water as energetic or thermic fluid, said corrosion inhibitor being a fluorophosphate compound selected from the group consisting of: (i) compound of the formula M2IPO3F, XH2O (ii) compound of the formula LiMIPO3F, xH2O (iii) compound of the formula NaMIPO3F, xH2O (iv) compound of the formula MIIPO3F, xH2O (v) compound of the formula M2IMII(PO3F)2, xH2O (vi) compound of the formula MIPO2F2, xH2O (vii) compound of the formula MII(PO2F2)2, xH2O (wherein MI is Na, K, Rb, Cs or HN4; MII is Mg, Ca, Ba, Sr, Zn, Cd, Mn, Ni or Co; and x is an integer or a fractional number comprised between 0 and 6) and (viii) mixtures thereof.

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