Corrosion-inhibiting latex paints

Details Corrosion-inhibiting latex paints Corrosion-inhibiting latex paints

1975-11-17

1981-01-06

Morris, Theodore

Compositions: coating or plastic

Coating or plastic compositions

Corrosion inhibiting coating composition

106 1428, 260 292EP, 260 296R, C08J 300, C09K 300

Patent

active

042434173

ABSTRACT:
The method of modifying latex paints for maintenance paint applications, primarily on iron or steel industrial and transportation structures, in order to provide both short term and long term corrosion resistance, and the resulting composition, are described. Two types of corrosion encountered in painting ferrous surfaces with latex paint are: (1) flash rusting which occurs as a result of contact with the water from the latex and results in rust bleed-through at the time the paint is drying, and (2) rust bleeding, which may occur over a period of months or years. It has now been found that the benefits of both water soluble corrosion inhibitors, for preventing flash rusting, and water insoluble corrosion inhibitors, for minimizing blistering and rust bleeding, are achieved by utilizing a soluble complex of a polyvalent metal, a volatile complexing agent, and a corrosion inhibiting anion. This complex may be represented by the formula

REFERENCES:
patent: 2760886 (1956-08-01), Prentiss et al.
patent: 2902390 (1959-09-01), Bell
patent: 2904526 (1959-09-01), Uelzmann
patent: 3079358 (1963-02-01), Uelzmann

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