Corrosion resistant, coated metal laminate

Details Corrosion resistant, coated metal laminate Corrosion resistant, coated metal laminate

1989-03-31

1990-07-03

Herbert, Thomas J.

Stock material or miscellaneous articles

Web or sheet containing structurally defined element or...

Physical dimension specified

252511, 428341, 428450, 428457, 428469, B32B 1504, B32B 1508, H01B 106

Patent

active

049390341

ABSTRACT:
Corrosive resistant, coated laminate consisting of metal substrate, anti-corrosive layer and paint layer, which is characterized by the fact that the anti-corrosive layer is formed by a composition containing, as essential components, at least one hexa-valent chromium containing chromium compound having a solubility of 20 to 10.sup.-5 and aqueous silica and/or aqueous resin as binder, and as optional component, a water soluble chromium compound having a solubility of more than 20, and the paint layer is free from chromium compound. The laminate is excellent, inter alia, in adhesion of coating and anti-corrosive property. The invention also provides a coated metal plate hving excellent corrosion resistance and continuous spot weldability.

REFERENCES:
patent: 2562117 (1951-07-01), Osdal
patent: 4266975 (1981-05-01), Higashiyama et al.
patent: 4365003 (1982-12-01), Danforth et al.
patent: 4411742 (1983-10-01), Donakowski et al.
patent: 4487815 (1984-12-01), Dorsett et al.

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