Document 82oV6pKd25rG19Q8jEQ1VBGe

Monsanto raoM inami a location* W. R. Richard - Research Center OATt UOJCCT . TO : April 14, 1969 " M. Farrar D Olson CAPACITOR AND TRANSFORMER AROOtGir^e*^ 1 Kuhn PGB to WRR, 3/11/69 P. Benlgnus H. Bergen FILE J. Bryant R. Munch D. Armstrong 0. Miller J. Landwehr C. Coleman r; r Res. 1 DOLSO WKUHN f BENI HBERO JBRYA Res. 2 WGK ANNISTON ANNIS'iW HD A BON Discussed Aroclor program and possible assignments. Item #1. Needed purification and quality control of transformer askarei "scavengers" FF0 and TOox 221: " -- -------------- - Suggested that work proceed at Anniston under G. Miller, probably should include column refining to permit our own and customer's plants to achieve lower power factor and Increase resistance in the pres ence of PPO or Unox 221. 0. Miller also to resolve purity requirements on incoming PPO and Unox 221 with suppliers Shell and Carbide. Item #2. Stabilizers for capacitor Aroclor: Agreed that Research and MCL will proceed with Dr. Munch and Mr. Coleman. This pro gram was started in Jan. We view this primarily as a defensive move vs. Prodelec and Baeyer; an offensive one If we get a good stabilizer system. We have been screen ing stabilizers using electrical properties of Aroclor as a guide to performance. To push the trial beyond this stage a promising stabilizer would have to be screened vs. capacitor materials and then used and tested in a capacitor. E.U.C. is the "partner" in supplying capacitors for impregnation. Item #3. Refinement of capacitor Aroclor 1242 contain ing stabilizers: Research to proceed with column refining of Aroclor containing Unox 206, DER 332 and Baeyer stabilizer so that we can advise cus tomers on Aroclor recycle purification. Many of our customers are already ahead of us on this Job. We need to help with tech nical service and minimize Prodelec/Baeyer/ influence. This assignment to R. Munch and V. Saeger. HONS 096100 -2- ( ' ^ Item #4. Explore possibility of modifying Aroclor 1242 to gain Improvements: 2------ Prodelec and Baeyer are manufacturing an Aroclor 1242 with -5 to -10 C lower pour point. Could they Invade our markets In the U. S. and U. K. with this product at a premium, at no premium? The Prodelec product Is high In dlchloroblphenyl (high 2,4' and low In 4,4' ) as compared with Aroclor 1242. The problem seems to be how much Is this product worth In the market place? .Vie have MCS 717 and 7b2 low vise, versions of Aroclor 1243* We are using this , product to contact capacitor designers and discuss Its merits vs. Pyralene 1500S and vs. Aroclor 1242. ' We have samples out at Westinghouse and G.E, Canada ' C. Coleman has sample requests to fill In Europe. We need a manufacturing tfewt'-estlmate; Bob Kountz , and Bill Kuhn will get a better, feel, than "5d/lb'`. i' :' , ." Prodelec visited our U.S. Customers offering Pyralene 1500S at a 10^ premium. Would Prodelec cut us out if It were offered at a normal Aroclor 1242 price? How much would we have to drop our Aroclor 1242 price to be competitive? We need knowledge of a process which could make this J material at the lowest manufacturing cost. Our "high DK process" used fractional distillation to separate-the-S'1;'*' dlchloroblphenyl. This column fractionation cost should be reviewed. We left the meeting with the- understanding that this- separation might- b-*6t*84Ab. Bill Kuhn will recheck--aith-B. Kountz on costs^. IT fractional distillation Is too expensive to concentrate the 2,4' dlchloro blphenyl, then we will need a process to get It by direct or Indirect chlorination. An alternate is to minimize or separate the low DK crystalline 4,4' dlchloroblphenyl frpm Aroclor 1232 and blend with a higher Aroclor. This problem will be presented to Dallas Armstrong with Inputs from 0. Miller and Research to see if we have some possible routes to be tried on a lab T scale. Dallas has the set-up and technical capability on Aroclor chlorlnatlons. Can we make a Fluid which will work better In poly propylene film capacitors* Wetting agents In Aroclor which increase rate of spreading for aluminum and polypropylene are one approach. The Unox 206 and/or PPO are supposed to aid wetting. Research (R. Munch and V. Saeger) HONS 096101 -3- have been working on other additives to promote wetting without adding electrical degradation mechanisms. Plan is to see what the capacitor designers want in way of decreased viscosity, increased or de creased dielectric constant, decreased surface tension and improved wettability. Base Stock 2,4' dichlorobiphenyl Trichlorobenzene DK=79 Aroclor 1221 Aroclor 1252 MCS 717 (1239) Aroclor 1242 Chloro terphenyl? 2,2' dlchloro diphenyl ether DK-10 Tolyl Xylyl Sulfone DK-20 + Wetting Agents We will make available in at least a tech, lab volume amounts of the base stock modifiers on the top of the above table and blend appropriate mixtures for trial as dielectrics. R. Munch made 1 calculation which seems to indicate a DK over 20 would put maximum electrical stress on polypropylene film. This says that the xylyltolyl sulfone (and higher DK Aroclor blends) should be re-examined closely. Less Refractory. More Degradable AroclorB or Aroclor Substitutes - Research Problem " Concern over pollution, persistence of chlorinated hydrocarbons, ability to detect in the ppb range, the Risebrough storm about PCB's in nature all conspire to force the synthesis of Aroclor substi tutes in those applications which can reach the environment. We assume that the lower chlorinated compounds will be more easily degraded. We know that sensitivity to radiation and sunlight will be Br > Cl > P. We know that substitution of OH, OCH3, CH3, COOH on the ring should speed up degradation. HONS 096102 -4- We have been examining the F and F/Cl biphenyls. Decafluorobiphenyl is more toxic than Aroclor. We want to examine the bromoblphenyls for toxicity and hi/ decomposition. Bromlnatlon could be made available in Monsanto via Cla/Br2generation, a process we practice Inadvertently and on a small scale because of KBr content in KC1 in an electrolysis cell. In Dielectric Fluids - Partly Covered - Small Program going. Q. Thompson, R. Weiss, R. Munch Plan is to test polypropylene film compatibility, thermal chemical stability, acute toxicity and blodegradabllity of 2,2' dlchloroblphenyl ether tolyl xylyl sulfone dlbromoblphenyl bromochloroblphenyl . In Hydraulic Fluids - Not Organized - Need Help Need a biologically acceptable FR component for 15i*/lb. Is chlorinated terphenyl/TCB a potential solution? Can we use a chlorophenol derivative? Can we use a chlorinated phthallc anhydride deriv.? Can we use a chlorinated alkyl benzene? Can we use a chlorinated alkylblphenyl? In Plasticizers - M. Farrar In NCR Paper - M FarrarM. Touchette Looking at alternate compounds probably not chlorine containing compounds; phosphates - possibly tributyl phosphate. Aroclor Plants Alternate Products - Not Organized, W:fLooking at Aroclor as a chlorination faclllt; Trichlorobenzene Tri-tetrachlorobenzene Trichloro-m-xylene for Textiles Other products HONS 096103 W. R. Richard ms