Document x5p88qwwD3dxn3qgnd9g21GVm

Monsanto F (NAME -- LOCATION -- PHONE) P. W. May - Galt Labs - 1730 DATE SUBJECT REFERENCE TO April 9, 1981 STEROX NM REPLACEMENT Memo JHO/DHP, 1-9-81 J. H. Orem B3NC CC . M. W. Farrar - '1 N. W. Touchette D. H. Paul Santicizer 598 and Santicizer 160/surfactant blends, along with con trols, were tested in Gelva S-55XH at 10% for viscosity build and stability. This testing was done in duplicate, on separate days, and the numbers in the attached table are an average of these tests. Based on these results, Surfonic N-120 appears to be an acceptable substitute for Sterox NM in Santicizer 598 (XA-1013). Tergitol NP-13 also looks very good. The Surfonic N-120 gave the most stable vis cosity over the 4 week period, however. PWM/gls attach. P. W. May DSW 587068 STLCOPCB4092403 EFFECT OF PLASTICIZER/SURFACTANT BLEND ON PVAc EMULSION VISCOSITY OVER TIME BROOKFIELD VISCOSITY (CPS) AT: PLASTICIZER Santicizer 160 Santicizer 598 (XA-1013) Santicizer 160 + 4%: Sterox NK Tergitol NP-13 Triton N-lll Surfonic N-120 Benzoflex 50 Benzoflex 9-88 DBP Initial 1 Day 7350 7450 9050 9150 8200 8700 8100 9050 7800 7750 7750 8400 9100 8300 9000 7600 7500 7450 7 Days 6800 8600 14 Days 6900 9050 - 7850 8800 8050 8900 7700 8250 8100 8550 7350 7250 7000 , 7700 8000 8100 21 Days 7400 9750 9000 9800 8800 9100 8050 8600 8200 28 Days 7600 9750 9700 10300 8750 9050 8400 8600 8250 COMMENTS: . Either 4% Surfonic N-120 or 4% Tergitol NP-13 in Santicizer 160 mimics the viscosity/time behavior of XA-1013. . Surfonic N-120 appears to give the most stable viscosity over time. . Lower viscosities at 7 days and 14 days are probably due to ambient temperature variations. . Unplasticized Gelva S-55XH had a viscosity of 4700 cps. ' April 1981 DSW 587069 STLCOPCB4092404