Document wD6DL4m9y62KvE0492NaB63aE

Mr. J. E. Southwick Strongsville, DPJRC Jan. 4, 1972 PRODUCT DEVELOPMENT REPORT LEAD REMOVAL J. G. Kingston 8. T. Bowell W. M. Tome Recent laws that have been enacted require that wa reduce the lead level to 0.5% maximum on the non-volatile. Special labeling will be required for all paints containing more than 0.5% lead. In 1959. lead pigments were removed from Spred Gloss. Spred Lustre. Alkyd Plats and Florenamel to meet the requirements of 1% maximum lead content in the non-volatile. This was to meet the Baltimore and New York City labeling laws. The U.S. Department of Health. Education and Welfare now requires that we reduce this lead level to 0.5%. To achieve this requirement, it was necessary to remove the lead drier. Two drier systems were studied they are cobalt-zirconium and cobalt-Active 8. When running teats in Y-900 Spred Gloss, it was found that the cobalt Active 8 at equal dry times was excessive In costs and gave a slightly greenish-brownish color. The cost Increase would be approximately 23$ per gallon. At equal dry times the cobalt zirconium drier combination was the most acceptable and only increased the cost 3$ per gallon. The levels of driers recommended for Y-900 are .07% cobalt metal, and .14% zirconium metal based on vehiole non-volatile. The Nuaet paste (E-396) will be retained in the formulas to add dry stability on aging. The level will be dropped from 5 pounds to 4 pounds per 100 gallons. Similar changes will also be made in Y-800 line. The lead driers and Nuaet paste will be maintained at the same levels in Spred Lustre Y-4600 line since the total amounts of lead are below 0.5%. No changes are contemplated in the Gild-Guard industrial Enamel, Y-4500 line. Proper labeling will be maintained in the colors that contain lead pigments. These are primarily the yellow, orange, greens and reds. GLD012615 J. E. Southwick