Document RDpbp07k0rEVyp5yNa93Gnzv

1-164 (SOM) TENNECOINTEROFFICE MEMO CHEMICALS, INC to d . Johnson At Flemington from f.W. Kanzler At Burlington subject Premex Type 585 Resin Reference: Memo F.W, Kanzler from D. Johnson dated 2/14/72 Date February 22, 1972 copy to H.B. Carr F.E. Love J.W. MeBroom M.W. Williams j/File The samples submitted by you were analyzed as requested. Table I (attached) lists the results of the polymer tested. The sam ple from lot 611057 showed an unusually high level of TCE which is also reflected in the high level of total volatiles. Analy ses run in the past showed a residual TCE level of around 1000 ppm. Lot number 611059 and the Tenneco control lot 651003 showed a level of what is considered to be the normal level of residual TCE. The residual vinyl acetate levels of the Premex polymer are lower than the levels found in the Tenneco Copoly mers. The bound acetate level for both Premex lots is low out of Tenneco specification for 315 type resin (13.7~15.7$) - The Thermolite 31 sample was first subjected to a Karl Fischer moisture analysis. A sample of Nuostab 1562 was used as a con trol. Relatively high moisture results give reason to believe that a chemical interference during the titration may take place. Next, an infrared scan was performed on both samples. The scans yielded identical spectra with the exception of an absorption at 1550 cm"1 (6.67p) observed in the spectrum of the Nuostab 1562 sample. This activity indicates the presence of a salt in the Tenneco stabilizer which is not present in the sample of the sta bilizer submitted by RCA in Mexico. This analysis was followed by a total volatile determination under vacuum. This type analy sis was suggested by C.W. Johnston to see if there is a differ ence in the low boiling volatiles of the two (2) samples. The samples were subjected to a temperature of 7u and a vacuum of about 27 inches for a period of one (1) hour. The Thermolite showed a total volatile level of -3.6$ while the Nuostab 1562 yielded a total volatile level of 1.9$. A yellowing of the Nuo stab 1562 was noted, the T-31 retained its clear appearance. The biscuit sample was again subjected to UV light examination. The bulb used in Burlington is a long wave bulb (366c/A). The biscuit gave no Indication of degradation when inspected under the UV light. Attachment. FWK/jt F.W. Kanzler COLORITE 016587 TABLE I Sample Identification 611059 611057 651005 Bound Acetate % 15.2 15.1 15.4 Residual VAcM ppm 2050 2540 2910 Residual TOE ppm 1050 2870 1050 Total Volatiles % 0.57 0.84 0.49 Date of Report 2/22/72 COLORITE 016588