Corrosion-inhibiting pigment based on phosphate

Details Corrosion-inhibiting pigment based on phosphate Corrosion-inhibiting pigment based on phosphate

C - Chemistry, Metallurgy

23

F

6/216, 31/59

C23F 11/18 (2006.01) C09C 1/00 (2006.01) C09D 5/08 (2006.01)

Patent

CA 1117705

ABSTRACT OF THE DISCLOSURE: This invention relates to a phosphate-based, corrosion inhibiting pigment consisting of 3 to 97 weight % of MgHPO4 ? 3H2O, the balance being CaHPO4 ? 2H2O. The pigment is used to avoid corrosion of iron and iron alloys and is employed in the form of a painting composition or paste. Up to 95 weight % of the pigment can be replaced by a pigment exten- der.

339536

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