Method for forming a self-healing corrosion preventative film

Details Method for forming a self-healing corrosion preventative film Method for forming a self-healing corrosion preventative film

1986-10-22

1988-05-31

Page, Thurman K.

Coating processes

With cutting, holding, severing, or abrading the base

Prior to coating

106 1412, 106 1411, 148 615R, 148 617, 427409, 427240, 427421, 427428, 427429, 427435, B05D 312, B05D 302

Patent

active

047480556

ABSTRACT:
Self-healing coatings are formed by first phosphating or nitriding ferrous parts, then coating with an emulsion of e.g. polysiloxane, oil, sorbitan derivative and sodium sulfonate, butyl cellosolve, oleic acid. Preferred phosphating is to a thickness of 2,000-3,000 mg Zn phosphate/square foot. This coating passes 240-plus hours in 5% salt spray (ASTM B-117) and resists wash off with car wash soap.

REFERENCES:
patent: 2528535 (1950-11-01), Merker
patent: 3457173 (1969-07-01), Pater
patent: 4440582 (1984-04-01), Smith

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