Document 2ZEX3kkXgOmdLmO6LpaE3M3g

tennecoIW i ER-OFFICE MEMO CHEMICALS, INC. to c.G. Thompson erom w. Mixingoff AT Piscataway AT Burlington subject process engineering monthly report May, 1975 date June 2, 1975 copy to H,B. Carr W.C. Champion W.F. Gabel Dr. R. T. Gottesman Dr. L. Gross Dr. P. A. Lobo R.S. Miller J.W, Poarch Dr. M. Rosen G. I, Rozand P. R. Scarito A.C. Siegel J.T. Sweeney T.T. Zuhl Zullo - Burlington Plant - Flemington DISPERSION - BURLINGTON The efforts to produce better opticals of 1742 dispersion resin intensified this month. Eight lots of 1742 with reduced levels of AR-901 and tridecanol were produced. The additive systems were in good control as compared to past performance. The resulting opticals were as good, if not better than lot #935029 but not as good as #933003 which is the short term objective. Some of the product was accepted by Congo and some has been rejected for high haze and graininess. No causal affect for these deficiencies is as yet iden tified. An LOP is being implemented for a one-lot run of 1742 which will try to reproduce more precisely the reaction kinetics of lot #933003. This will mean longer reaction times and lower heat kicks. The ultimate target for 1742 properties remains Goodrich's Geon resin. To attain this goal, R&D, along with Process Engineering and Applications will meet in early June to establish which process parameters are to be pursued in evaluations in the Pilot Plant. The tridecanol additive system was adjusted by Process Engineering so that there was no longer an on-off action by the flow control valve but a steady flow based on set point. Results indicate that system performance is improved but still not better than 20% of target set point. The computer program for handling the three pallet averaging of the additives has been written and is in the process of being debugged. Plastisol stripper #4 agitation has been increased from 20 to 45 rpm. Prelim inary non-nitrogen sparging evaluations are being performed. Nitrogen sparging trials will be evaluated on June production with the exception of 1742 resins. COLOR!TE 010654 tt ` Page 2 SUSPENSION - BURLINGTON Two special batches of 10/5R PVC were made with 75 lbs of Epoxol 9-5 in an attempt to improve dynamic heat stability for American Hoechst. One batch was held in the reactor too long as a result of stripper problems and had poor stability. The second batch is being evaluated. During the nxmth, two batches of 315 copolymer set up (May 12 and May 22), The first set-Aip was followed by two BB batches and a series of coarse particle production. It required an increase of 12 lbs of gelatin to bring the particle size under control. During this interval, all of the raw ma terials were evaluated and process conditions were thoroughly reviewed. The second set-up appeared as an isolated event with no other batches indi cating any problems. Following the second set-up, charge water temperature was lowered by 10F and the product particle size went very fine. A ten-lb reduction (to 35 lbs) of gelatin brought the particle size into control. As of this time, no causal relationships for the set-ups nor for the coarse production are apparent. A full detailed report on the investigation will be issued in June. Production of 391 copolymer both at Burlington and Flemington is running coarse and may be related somehow to the problems with 315 copolymers. An LOP to evaluate dual catalyst use for production of 315 copolymer is being rewritten. It is possible that the use of a dual catalyst may improve the performance of 315 at CBS. SUSPENSION - FLEMINGTON The Flemington Plant is enmeshed in a series of production and process prob lems. The 315 copolymer intended for use at CBS for record's production is exhibiting a "bleed-out" problem and has been rejected. Process Engineering prepared a document comparing the two plants to highlight any differences in how the product is made and handled. The obvious differences are: 1. Flemington requires more charged MVAc to obtain the same bound acetate as Burlington. 2. The gelatin levels at Flemington are lower. 3. The agitation at Flemington is different from Burlington (two baffles ver sus one). 4. The particle screen distribution shows Flemington to be somewhat narrower and coarser. 5. Flemington uses somewhat more recovered monomers per batch. The Applications Group evaluated Burlington, Flemington, Firestone and Borden resins (the latter two are better at CBS), As a result of a review meeting of these results, a program has been set up at Flemington in which several 315 COLORITE 010655 OJECT :32R DEI "497 DEI 492 - H^yis-ingoff FROM---- _ . TO----- ----------- TEN! TIC 0 INTERMEDIATES Divisional:LINING TIMS DISTRIBUTION - MONTI OUT (SALARY) {. ACCOUNT .KIDDER JOB DESCRIPTION Compound Plant Blenders Pro minsa SUN MON TUE WED THU FRI SAT TOTAL 40 8 Stripping Facilities - Flem. 8 Water Fill - Flem. 8 Dispersion Problems - Flemington Problems 315 -Set-ups - Burl. 20 ! 20 | 72 # * * ' -. - : COLOR!TE 010656 ENG. FORM #29 ` TOTALS 176