Document gbKdjbXL1JE8JDXoD6bvEBkQa

TENNECOINTER- OFFICE MEMO CHEMICALS , INC. To C.B. Johnson AT Piscataway date May 30, 197S From W.C. Champion AT Burlington Surjcct RCA Records.- Customer Complaint IS3 copy to H.B. Carr G.E. Disch W.F. Gabel J.R. Gregor Dr. L. Gross D.C. Hawk Dr. M. Rosen G.1. Rozand P.R, Scarito A.C. Siegel R. Stevens File<^ Subject customer complaint on 391 copolymer shipped in car #ACFX 57428 was answered on May 5, 1975. The evidence provided by the customer was four small samples of resin, one taken from each compartment. At the time the samples were received, I inquired as to how the' samples were taken, and was assured by you (after a call to J.C. Anglum) that these were top samples. On the basis of this evidence, we concluded that two compartments of the car had inadvertently been "topped off" with homo polymer resin. When the returned car was received in Burlington, it was found that none of the top seals were broken, but the unloading tube seals had been removed. Samples were taken from all compartments, top and bottom, and analyzed for vinyl acetate with the following results: % Acetate Top Bottom Compartment A If CA If CB If B 17.1 17.1 17.6 16.1 0.3 17.3 16.1 11.5 It would appear from these data that the problem was a heel left in the car from a previous load of homopolymer. Although it is impossible to estimate the size of this heel, it was probably quite small (assuming proper preloading inspection procedures were followed). RCA's bottom sampling technique presents a problem of its own. Since RCA run neither relative viscosity nor bound acetate, they rely on melt flow properties to judge performance. They have recently complained to us about variability in this property. Bottom sampling may be giving them meaning less results, and leading to unnecessary concerns for their plant operations. WCC/jst COLORXTE 010152