Tin-plated steel with adhesion promoter
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United States of America Patent
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Jan 16, 2001
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N/A
app pub date -
Aug 12, 1999
filing date -
Aug 12, 1999
priority date (Note) -
Expired
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Abstract
A method is provided for enhancing the adhesion of organic polymer coatings to electrolytically passivated (CDC) tin-plated steel strip. The method includes applying a solution comprising 0.1 to 7 percent of an adhesion promoter to the electrolytically tin-plated strip during the processing of the strip on an electrolytic tin-plating line. The adhesion promoter may be at least one selected from the group consisting of: ##STR1## where n is within a range of from 4 to 99; (b) C.sub.16 H.sub.33 +N(CH.sub.3) .sub.3 M where M is member of the halogen group; and (c) R.sub.n --Si--(X).sub.4-n where R is a non-hydrolyzable organic radical selected from the group consisting of glycol, epoxy, amine, diamine or mercapto groups, and mixtures thereof, containing from 3 to 10 carbon atoms; the number n is an integer from 1 to 3; and X is a hydrolyzable group selected from the group consisting of Cl--, OCH.sub.3, OCH.sub.2 CH.sub.5, OOCCH.sub.3, OCH.sub.2 OCH.sub.3, amine, diamine, triamine, acyloxy and alkoxysilanes, and mixtures thereof.
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