Process for coating and cleaning metal surfaces

B - Operations – Transporting – 05 – D

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Details

B05D 3/10 (2006.01) B05D 5/00 (2006.01) B05D 7/14 (2006.01)

Patent

CA 2566956

This invention relates to process for coating a metal surface, wherein said process comprises contacting the metal surface with a barrier coating comprising (a) an amine salt of a fatty acid or an amine salt of a derivative of a fatty acid, (b) a salt of a non polymeric aromatic acid, (c) optionally, a nonionic or anionic surfactant, and (d) water. The invention further comprises a process for cleaning a metal surface containing residues, which comprises contacting the metal surface, exposed to the barrier coating, with water to remove residues that have deposited after applying the barrier coating to the metal surface.

Cette invention concerne un procédé pour enduire une surface métallique, qui consiste à mettre en contact cette surface métallique avec un enduit barrière comprenant (a) un sel amine d'un acide gras ou un sel amine d'un dérivé d'un acide gras, (b) un sel d'un acide aromatique non polymère, (c) éventuellement un tensioactif non ionique ou anionique, et (d) de l'eau. Cette invention concerne en outre un procédé pour nettoyer une surface métallique contenant des résidus, qui consiste à mettre en contact la surface métallique, exposée à l'enduit barrière, à de l'eau, pour éliminer des résidus s'étant déposés après application de l'enduit barrière sur la surface métallique.

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