Method for coating metal surfaces with an aqueous,...

Details Method for coating metal surfaces with an aqueous,... Method for coating metal surfaces with an aqueous,...

2005-04-05

2005-04-05

Cameron, Erma (Department: 1762)

Coating processes

Direct application of electrical, magnetic, wave, or...

Polymerization of coating utilizing direct application of...

C427S508000, C427S388200, C427S409000, C427S410000

Reexamination Certificate

active

06875479

ABSTRACT:
The invention relates to a method for coating a metal surface with an aqueous composition, characterized in that the composition contains, in addition to water: a) at least one organic film former that contains at least one water-soluble or water-dispersible polymer with an acid number ranging from 5 to 200, b) at least one particulate inorganic compound with an average particle diameter measured by a scanning electron microscope in the range of from 0.005 to 0.3μ, c) at least one slip additive and/or at least one corrosion inhibitor, d) optionally at least one organic solvent, e) optionally at least one silane and/or siloxane, f) optionally at least one cross-linking agent, and g) optionally at least one chromium (VI) compound. The clean metal surface is contacted with the aqueous composition and a particle-containing film is formed on the metal surface which is then dried. The dried and optionally also cured film has a layer thickness ranging from 0.01 to 10 μm. The invention further relates to a corresponding aqueous composition.

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Database WPI Section Ch, Week 200042, Dervent Publications Ltd., London, GB, AN 2000-482650, XP002187245 & WO 00 39224 A (Nippon Parkerizing Co. Ltd.), Jul. 6, 2000.

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