Organic composite coated steel plates having improved corrosion

Details Organic composite coated steel plates having improved corrosion Organic composite coated steel plates having improved corrosion

1993-08-16

1996-05-07

Zimmerman, John

Stock material or miscellaneous articles

All metal or with adjacent metals

Composite; i.e., plural, adjacent, spatially distinct metal...

428626, 428632, B32B 1508, B32B 1518

Patent

active

055144837

ABSTRACT:
The improved organic composite coated steel plate includes a zinc or zinc alloy plated steel plate as a substrate that has on its surface a chromate film the Cr.sup.6+ content of which is no more than 70% of the total Cr content and which is deposited in an amount of 5-500 mg/m.sup.2 in terms of metallic chromium, the chromate film being overlaid with a resin layer that is deposited in an amount of 0.1-3 g/m.sup.2 on a dry weight basis and which is formed primarily of water-dispersed silica and one organic resin member as selected from the group consisting of an anionic aqueous resin, a nonionic aqueous resin and an anionic aqueous urethane resin. This steel plate is adapted for not contaminating the environment of the earth in the process of its manufacture.

REFERENCES:
patent: 4791168 (1988-12-01), Salatin et al.
patent: 4794147 (1988-12-01), Sanno et al.
patent: 5017673 (1991-05-01), Balatan

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