Chromate coatings for metals

Details Chromate coatings for metals Chromate coatings for metals

1985-09-09

1987-02-17

Michl, Paul R.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

At least one aryl ring which is part of a fused or bridged...

148 62, 2523895, 427435, 427436, C08K 322

Patent

active

046440291

ABSTRACT:
A composition and method are particularly suitable for applying a corrosion preventive and paint receptive coating to metal surfaces where immersing treatment is impossible or impractical. A brush-on aqueous composition free of reducing agent containing hexavalent and trivalent chromium and at least 5 g/l of silica or silicate together with an organic solvent and thickening agent is applied to the metal surface and dried.

REFERENCES:
patent: 3053691 (1962-09-01), Hartman
patent: 3451865 (1969-06-01), Bretz
patent: 4161409 (1979-07-01), Schiffman
patent: 4540733 (1985-09-01), Ito

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