Document 82Yozy4GwG4VNNZBL3k91wyXm

WHITE PRIME COATS improve point systems primers, used in two coat house paint systems, improve adhesive and water resistant qualities and lengthen protective and dec orative life. The test panels show how, after one year's exposure to Long Island's erratic weather conditions, the system with the whitelead-base primer has maintained its film integrity and adhesion and that the finish coat formulation is not as suitable as a primer. No stronger or more convincing argument can be given for using white lead pigment in your primer formulations; and certainly, no customer could ask for better proof of the pro tection of white lead primers in his house paint systems. For information on the most effective use of ''lead" in your paints, write for "White Lead in Mixed Pigment House Paints," and "White Lead Technical Bulletin #1." Lead Industries Asso ciation, 420 Lexington Avenue, Sew York 17, Sew York. In this comparative weathering test, a commercial, lead-base, finish paint, was applied, self-primed, to a cedar panel (right). The panel on the left has a topcoat of the same finish paint but it has been applied over a typical, white lead-base, multiple pigment primer. On both panels the edges were thoroughly sealed with two coats of L.I.A. primer P-4. Cross grain saw cuts were subsequently made two inches into the panels from one edge. The panels were then exposed 45 deg. south vertical at Sayville, Long Island, New York. Finish Paint on Primer Base (MAGNIFICATION 4X) Seif Primed Finish Pain* The photographs show the film cracking effect moisture has on the self primed house paint system as compared to the protection giien by white lead base paint, formulated as a primer. "LEAD" LENGTHENS THE LIFE OF PAINT BECAUSE: It Stabilizes .. . neutralizes acidic compounds resulting from decomposition of the vehicle -- presents the film from becoming soft or liquefying. It Plasticizes . . . forms lead soaps which increase film flexibility.' >r.. It Strengthens . . . mechanically reinforces the film, increasing its elastic strength with flexible, spiny lead- soap particles. . S-. It Resists Water . . . reduces water sorption to a small fraction of that of lead-free paints. It limits Oil Penetration . . . holds more of the vehicle in the film where it.is needed; less in the substrate. tf Prevents Chalking and inhibits Mildew ... makes paint look better, longer. < UJL PRIMER P-4* Pigmentation (64.1%) Per Cent WVtfe lod Rutile Norv-CHolkiog Titonium Dioxide Mogneiium Silicate lifkerfl# Total Vehicle (35.9%) 44.5 15-1 SS.4 1.0 >00.0 Per Cwt Row Un*eed Oil VM1767** VM1693*** Blown Unseed Oil (Z-2) Minerot Spirit* Total 34.0 21.0 10.5 5.0 0.5 29.0 100.0 PVC--39.4% tb./lOO gaL 473 144 US 10 147 m 54 27 3 150 1524 FINISH PAINT F9f>nfotioft (63.1%) Per CtM Whit* Lead 23nt Oxide Anetait Trtonutm Dioxide Mogntftium Silicate Total Vehicle (36.9%) 35.0 30.0 15.0 20.0 100.0 Per Cent Refined Unseed Oil loditd Oil (Z-2) Mineral Spirit* Driers Total 60.0 15.0 22.0 3.0 100.0 PVC=33% lb., 100 gal. 336 290 191 336 84 124 16 1522 formula from '`White lead Technical BuHefie *71.** *` 60 parts linseed oil; 40 parts dehydrated cottar o*l, bodied to obtain o viscosity of V. Gardner 70% solids in minera! spirits. ... ***5 gal. length, low ocld number ester gum varnish cooked with dehydrated castor oil. Viscosity is B-C Gardner at 59% solids. L I AC29 7` { This advertisement or version thereof appears in the follow tog publications: American Paint Journal. June 2: Pamt. Oil & Chemical Review, June 22: Official Digest, June; Western Paint Review, June; Paint & Varnish Production, June. N 4113