Document 6RaZreG4MDnjkLna0e4QJX1km

APR 14 1972 GLIDDEH-DURKEE FROM: Mr. J. f . Southwick April 13, 1972 CITY: Strongsville, DPJRC SUBJECT: LEAD FREE SPRED LUSTRE FOR: Mr. S. T. Bowell H. J. Kiefer- UCB R. J. Haviland -#1 M.'W. Malaga -#1 F. G. Hidalgo J. G. Kingston W. M. Tome We are issuing the following formulas to Chicago #17 only. Y-4600-G, Y-4618-R, Y-4663-M, Y-4680-M and Y-4687-L. These formulas represent our present thinking, based on limited lab tests and supplier recommendations, for a lead-free drier system. Calcium drier will be used in the pigment dispersion with increased levels of cobalt and zirconium in the normal let-down. The full story on dry stability is not complete but we feel the risk is not too great and must be taken at this time. With follow-up testing of plant retains we will have our drier problems solved before December 1973. By copy of this letter to Dick Haviland we are asking that quart samples of all batches be sent to my attention. There is no cost increase for the new drier system. JES/ab J. E. Southwick GLD012122