PROCESS FOR THE IMPREGNATION OF ANODICALLY PRODUCED ALUMINUM SURFACES

摘要

In a process for impregnating anodized aluminium and/or aluminium alloy surfaces, which may be coloured, said surfaces are placed in contact with aqueous solutions derived from long-chain sulphonic acids, phosphonic acids and/or phosphonous acids. Surfaces impregnated by this process possess improved resistance to condensed water and to weathering.