Method for spray cleaning painted surfaces

摘要

A cleaning composition and method for removing road film from transportation vehicles without the necessity of mechanical brushing or wiping of the surface using high pressure spray equipment. The composition comprises 2 to 30% by weight of chelating agent; 1 to 12% by weight of a bis(ethoxylated) quaternary ammonium compound; 0.5% to 5% by weight ethoxylated alcohol nonionic; 0-5% by weight sodium metasilicate and water. This concentrate is diluted with water and applied to the surface at a pressure of above 400 psi.