Water based coating for roughened metal surfaces

Details Water based coating for roughened metal surfaces Water based coating for roughened metal surfaces

1989-05-10

1992-04-14

Cashion, Jr., Merrell C.

Stock material or miscellaneous articles

Composite

Of metal

106 1405, 106 1429, 106 1443, 427327, 4273884, 428469, 428698, 428500, B32B 1508, B32B 2730

Patent

active

051047420

ABSTRACT:
Calcium or other sulfonate gel in an oil carrier (such as that of U.S. Pat. No. 4,629,753 to Quinn), optionally mixed with a small amount of sodium sulfonate and tall oil fatty acids, can be neutralized with amine, e.g. DMEA, to form a soap which can be dispersed in water. Adding an acrylic emulsion results in an acrylic coating rich in corrosion-retarding alkali metal or alkaline earth metla sulfonates. This finish on metallurgically roughened, e.g. nitrocarburized, metal forms a firm film which can resist greater than 500 hours ASTM B117 salt spray.

REFERENCES:
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patent: 4656097 (1987-04-01), Claffey et al.
patent: 4842903 (1989-06-01), Hayner
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Lexington Coating Technology, Inc., "Product Information--Nitrocoat".
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Witco, "Material Safety Data Sheet-SACI 445-W,", Apr. 27, 1983.
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