C - Chemistry – Metallurgy – 23 – F
Patent
C - Chemistry, Metallurgy
23
F
31/34
C23F 11/18 (2006.01) C09D 5/08 (2006.01)
Patent
CA 1310181
Case 6717(1) ABSTRACT OF THE DISCLOSURE CORROSION-INHIBITING COMPOSITION A corrosion-inhibiting composition comprises a blend of particles of two amorphous silicas; one containing corrosion-inhibiting cations releasable by ion-exchange and the second being substantially free of any corrosion-inhibiting ions. The weight ratio of the cation-containing silica to non ion containing silica is in the range 20:80 to 60:40. The corrosion-inhibiting composition may be incorporated into liquid media and protective coatings, which are based on film-forming polymers e.g. epoxy resins, vinyl resins, epoxy esters. The amorphous silica used is preferably of a microporous type. Calcium cations are the preferred corrosion inhibiting cations. The composition is preferable used to inhibit corrosion of aluminium surfaces.
580250
British Petroleum Company P.l.c. The
Fletcher Timothy E.
Ridout & Maybee Llp
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