Coated aluminium workpiece

Details Coated aluminium workpiece Coated aluminium workpiece

2005-06-14

2005-06-14

McNeil, Jennifer (Department: 1775)

Stock material or miscellaneous articles

Composite

Of metal

C428S472200, C428S336000, C428S699000, C428S702000, C205S172000, C148S248000

Reexamination Certificate

active

06905775

ABSTRACT:
Aluminium alloy sheet having on a surface anodic oxide film and an overlying coating consisting essentially of at least one adhesion promoter excluding silanes. Sheet for architectural use carries a paint layer over the adhesion promoter coating. Sheet for automobile use may carry an electroconductive paint primer layer over the adhesion promoter coating. Preferred adhesion promoters are polyacrylic acid and pretreatments containing Cr, Mn, Mo, Si, Ti, Zr and F values.

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Wernick et al., The Surface Treatment and Finishing of Aluminum and its Alloys, 5th. ed., vol. 1 (ASM International), pp. 220-221 and 296-297.

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