Method and compositions for coating aluminum

Details Method and compositions for coating aluminum Method and compositions for coating aluminum

C - Chemistry, Metallurgy

08

K

400/6549, 400/93

C08K 3/16 (2006.01) B05D 7/16 (2006.01) B32B 15/08 (2006.01) C08K 3/34 (2006.01) C09D 5/08 (2006.01) C09D 133/00 (2006.01) C23C 22/34 (2006.01)

Patent

CA 1152666

12,278 METHOD AND COMPOSITIONS FOR COATING ALUMINUM ABSTRACT OF THE DISCLOSURE This invention relates to a method and compositions for coating aluminum in order to improve both corrosion resistance and paint adhesion. By using a coating composition consisting essentially of (a) polyacrylic acid or esters thereof and (b) at least one acid selected from the group consisting of H2ZrF6, H2TiF6, and H2SiF6, the characteristics of the treated aluminum surfaces are improved, while process waste disposal problems associated with conventional chrome/phosphate coating are avoided. .S P E C I F I C A T I O N

334823

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