Document 6oMQ4gk43gb3V4MEOaQJKj43

Return to Agenda Author*8 Maine RECEIVED ltoV7 1958 THE SHtWVIN-WILLIAMS LAB. WRU H. Adame OZLO 18K MONOaASIC LEADED ZINC OXIDE in House Paint The Sheiwin-Williams Co, Pv+L 2nd Annual Symposium November 1956 Cleveland, Ohio Abstract! After over four years of extensive tests in house paints. Ozlo IBM shows in every respect eonparable durability to Oslo 35 when used It# for 5#, making up the deficiency of bulk by the use of added extender. Ozlo 10M shows very slightly better tint retention titan Ozlo 35 This we attribute to a reduction in the colloidal fines. Furthermore, laboratory results show that this reduction in colloidal fines permits opening the nti.ll slightly to obtain the same grind. Extensive tests, covering all types of zinc oxides, leaded zinc oxides, mixtures of zinc oxides and basic sulfate white lead, or basic silicate white lead at oil levels from 3 3/h to 5# per gallon and zinc levels from 1.63 to 2.93# per gallon at three exposure locations Chicago, Kansas and Florida - show that the Ozlo ISM and Oslo 3$ impart greater mllrtov resistance to the paint than any other basic pigments. Furthermore, Ozlo 18M and Oslo 35 show a greater factor of safety at lower zinc levels in resisting mildew than any other active pigment or pigments. Calculations based on over 150 different commercial house paint formulas show that by the use of Ozlo 18M from 12 to 18 cents per gallon can be saved without affecting the performance of the paint. Confidential for 5-W Technical Personnel Only 0007-SWP-043966 N23318