Paint adhesion by polyvinyl amines in acidic aqueous corrosion protection product containing polymers
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United States of America Patent
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Mar 27, 2012
Grant Date -
Nov 17, 2011
app pub date -
Apr 27, 2011
filing date -
Oct 28, 2008
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Abstract
The invention relates to an aqueous, chromium-free and curable corrosion protection agent for the first coating of metal surfaces, said agent containing at least one organic polymer or copolymer of at least partially acylated vinyl amines, for improving the properties of adhesion of the cured first coating to the metallic surface and to further organic coatings. The invention also relates to a method for producing a first coating comprising the agent according to the invention, and for applying further organic coatings, in particular those based on polyurethane resins and/or based on isocyanates and diols or polyols, and to a metal strip produced in this way or a metal sheet cut off same, which can optionally be shaped.
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