Document reEz6roE4x7kxebedm3MOEQee

Monsanto PROM (NAMC * LOCATION | St. Louis Organic Research DATE September 18, 1967 SUBJECT MEAD PACKAGING REFERENCE Work Request 67-114 TO E. C. Wilde - EWILD B-3-N CC: M. W. Farrar J. R. Darby R. M. Parks W. F. Waychoff J. S. Bagnall C. Wilde A. Cannon W. M. Coaker We have made considerable progress on this work request and wish to pass on the data we have obtained so far. Plasticizers were incorporated into the emulsion AC-54 at the 10$ level based on total weight (about 18$ on solids). Plas ticizers tested were: . A. B. C. D. E. F. G. H. Control sample--contains unknown plasticizer, possibly B-40 Benzoflex 40 Santicizer 1548 ' - Santicizer 218A Santicizer 160/Aroclor 1254, 80/20 Santicizer 835 Santicizer l6o/Santicizer 141/DCHP, 75/15/10 Santicizer l6o/Santicizer 8, 90/10 Wet Tack--fiber tear on kraft paper From A to H, time to tear in seconds was 6, 8, 6, 5, 7, 10, 9, 8. Initial Tack Development--index card test Sample E took four seconds; A, B and F, three seconds; all others, two seconds. Open Time--kraft paper A, B, and D maintain adhesivity for 3 minutes; C, E, F, and H for 2.5 minutes; and G for only 2 minutes. DSW 586964 STLCOPCB4092298 E. C. Wilde September 18, 1967 Page 2 Heat Delamination This test was started at 140F and the oven tempera ture was increased in 10F increments. By the end of the first day's testing, the temperature was 300F and there were still no failures. We started over again with new samples, using 300F as the starting point. The first failure occurred at 340F. This was Sample C, followed soon after by B and A. After onehalf hour, the temperature was raised to 550F. Samples fell in the following order: F, D, G, H, and E. Although Sample E (Santicizer l60/Aroclor 1254) was definitely the best on heat delamination and will probably also be good on water resistance, it is not outstanding on "open time" which is presumably a very important point with Mead. Santicizer 218A looks like the choice for that property. - Time: 48 hours - C. D. Bias dms i t OS'N *>6965 STLCOPCB4092299