Document 7OJ0zYqyp1y6GwvbDDyMOE6rg

II u 09 stabilized 11 Iiquss paints have sustained fiexibiiity sijr: X Three paint films (typical commercial formu lations) exposed to accelerated weathering for the same period, and each bent over a 1/32`inch mandrel. White lead content, left to right, Is 0.0%, 12.5%, and 35.0%. The vehicle in each case was identical. "LEAD" LENGTHENS THE LSFE OF PAINT BECAUSE: It Stabilizes . .. neutralizes acidic compounds resulting from the decomposi tion of the vehicle--prevents the film from becoming soft or liquefying. h Plasticizes ... forms lead soaps which increase film flexibility. It Strengthens ... flexible, spiney lead soap par ticles mechanically reinforce the film and increase elastic strength. It Resists Water ... paint films with an optimum lead pigment content absorb only a small fraction as much water as they otherwise would. It Limits Oil Penetration ... mote of the vehicle remains in the film where it is needed; less is absorbed in the substrata. it Improves Appearance .., by controlling chalking and In hibiting mildew. I. Another positive demonstration of the superior flexibility of white lead house paints over other types was recently conducted at the request of the White Lead Technical Committee of Lead Industries Association. The results, shown here, confirm those of other stand ard test methods, which consistently have indicated that the greater plasticity and stability of paints containing white lead result in a more flexible, longer lasting film. "Lead" stabilizes paint by providing a means of capturing destruc tive acidic compounds as they form during the normal weathering of the vehicle. Left alone, these compounds soften the film, thus greatly shorten its life. In lead pigment paints they are immobil ized, through their reaction with the pigment, to form useful, stable, insoluble lead salts in the film. "Lead" plasticizes paint by forming spiney, interlocking (felted) lead soaps through reaction with the vehicle. These compounds are ideal plasticizers, allowing the film to adhere closely to surfaces, yet expand and contract under stress without cracking. In short, "lead" paints provide a strong film that gets stronger with initial weathering ... stays intact longer than other types. For the formulation of these three test specimens, for test procedure, or for aoy information relative to the importance and use of whitelead pigment in house paints, write: Lead Industries Association, 420 Lexington Avenue, Netc York 17, N. Y. Visit our booth No. 35 at the Sixteenth Annual Paint Industries' Shew, October 31 throash November 3, for the complete story of "lead" to better paint formulations. LIAC2976 1CS4 This advertisement or version thereof appears in the following publications: American Paint Journal, Sept. 24 and Oa. 22 ; Paint. Oil & Chemical Review, Oct. 25; Official Digest, Oa.; Oil. Paint & Drug Reporter. Nov. T Paint & Varnish Production, Oa.; Western Paint Rev., Oa. N 4115