Corrosion inhibitors, methods of producing them and...

Details Corrosion inhibitors, methods of producing them and... Corrosion inhibitors, methods of producing them and...

C - Chemistry, Metallurgy

09

K

31/34

C09K 15/00 (2006.01) C09C 1/30 (2006.01) C09C 1/40 (2006.01) C09D 5/08 (2006.01) C09K 15/02 (2006.01)

Patent

CA 1155286

4966 ABSTRACT OF THE DISCLOSURE Corrosion inhibiting particles comprise an inorganic oxide which is silica or alumina, having corrosion inhibiting cations, particularly calcium or zinc cations, chemically bound to the particles. They may be prepared by contacting a silica or alumina containing hydroxyl groups with an alkaline solution containing the cations, at ambient temperature. The corrosion inhibiting particles may be incorporated into protective coatings, e.g. paints based on epoxy resins, alkyd resins, vinyl resins or chlorinated rubbers, in amounts up to 80% wt based on dry film weight, giving coatings with up to 7.2% wt corrosion inhibiting cations. Release of the cations is by ion exchange with other cations, e.g. the alkali metal cations of sea water, and does not, as is normal with corrosion inhibiting coatings, depend on the water solubility of the corrosion inhibitor.

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