Document k903jD7JQ0OLd4ZgGBVYDkK8O

lend makes paint films water resistant -- that's one reason why house paints containing "lead" last longer r: tp#jF" EFFECT OF WATER ON PAINT FILM Experimental paint films with varying ''lead" pigmentation, after strip ping, soaking and drying. As the lead content increases, from left to right, disintegration is materially reduced. Water is probably the worst enemy of any paint film. It tends to decompose and dissolve away portions of the film. It also tends to emulsify the film causing it to swell and blister. It is generally considered the greatest single cause of loss of adhesion. The inclusion of white lead pigments in formulations for house paints is the surest means of mastering these conditions. Paints containing "lead" are highly resistant to water--absorb only a small percentage of what they would otherwise. On films of lead-pigmented paints, water appears as distinct droplets--does not penetrate--whereas paint films lacking this ingredient are completely wetted. This high repetlency to water--resistance to pick-up of water within the film--is another reason for using "lead" in your paints. And use enough of it to take full advantage of the many desir able qualities that white lead pigments impart--qualities which mean better paints, greater consumer satisfaction and larger sales. For detailed information on the most effective use of "lead" in your paints ... write to Lead Industries Association, 420 Lex ington Avenue Sew York 17, X. Y. "lead" Increases Water Resistance of Paints Water sorption graph shows how lead decreases the water pick-up of mixed pigment paints. "LEAD" LENGTHENS THE LIFE OF PAINT BECAUSE: It Stabilizes -- neutralizes acidic compounds resulting from the decomposition of. the vehicle--prevents the film from becoming soft or liquefying. h Plasticizes -- forms lead soaps which increase film flexibility. If Strengthens -- flexible, spiney crystals to lead soaps mechanically reinforce the film and increase elastic strength. .' It Resists Water -- paint films with ah optimum lead pigment content absorb only a small fraction as much water as they otherwise would. ' LIA02965 This advertisement appears in the following publications: American Paint Journal, Oct. 9 and Dec. 4; Paint. Oil & Chemical Review. Oct. 12; Official Digest, Oct.; Oil. Paint A Drug Reponer. Dec. 18; Western Paint Review, Dec. N 4107 /"v