Corrosion inhibiting paint composition

Details Corrosion inhibiting paint composition Corrosion inhibiting paint composition

1983-07-25

1985-05-21

Hayes, Lorenzo B.

Compositions: coating or plastic

Coating or plastic compositions

Corrosion inhibiting coating composition

106 1444, 524414, 524436, C09D 508

Patent

active

045184291

ABSTRACT:
A corrosion inhibiting material comprises a water soluble glass of the calcium oxide/phosphorus pentoxide type which, when in contact with water, releases phosphate ions which inhibit corrosion of adjacent metal surfaces. The glass solubility may be controlled by the incorporation of one or more glass modifying oxides. Advantageously the glass is finely ground and then dispersed in a resin carrier to form a primer paint formulation.
The preferred glass forming region of a typical calcium oxide/phosphorus pentoxide system is illustrated in the ternary phase/composition diagram of FIG. 1 of the accompanying drawings.

REFERENCES:
patent: 1654404 (1927-12-01), Blumenberg
patent: 1830903 (1931-11-01), Hood
patent: 2192939 (1940-03-01), Slayter et al.
patent: 2294844 (1942-09-01), Gelsthamp
patent: 3346028 (1967-10-01), Griffith
patent: 3989532 (1976-11-01), Roy et al.
patent: 4126665 (1978-11-01), Ropp
patent: 4182437 (1980-01-01), Roberts et al.
patent: 4210575 (1980-07-01), Drake
patent: 4428774 (1984-01-01), Drake et al.
Rawson, H.; Inorganic Glass Forming Systems, Academic Press, 1967, pp. 160-173.
Imaoka, M.; Advances in Glass Technology, compiled by American Ceramic Society, Plenum Press, N.Y., 1962, pp. 149-152.

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