Document reMyQDYrp4qXgD4dNkrR0MRrv

Monsanto fftOM <NAMC ft LOCATION) P. G. Benlgnus - St. Louis General Office OATt `u,JtCT "IF"eNCt TO --April 7, 1970 CC: H. S. 3ergen - K3ERG ' : GENERAL EIECTRIC, HUDSON PALLS, N.Y. W. 3. Papageorge - WPAPA UJ__R^_k^hai^-VJRICH Drs. Al Pozefsky and/or Boudreau rid. Hunch : J. G. Bryant G. R. Graham - Hew York :D.. A. Olsen . Without going into any of the details, it is a real pleasure and encouragement to say that cur meeting today with the General Electric technical representatives was a very worthwhile session. The main point to make is that General Electric will give us guidelines about properties and economics that will be acceptable and allow us to probe -whether or not we can come up with a useful modification of Arcclcr 1242. Unquestionably General Electric are impressed with our knowledge and background. Per them to utilize our potential capabilities it is up to General Electric to provide us with prospective guidelines. They indicated full willingness to do this not only in terms of a modification of Aroclor 1242 but also in terms of some entirely different non-hologynicated dielectric fluids /for certain special applications. It is evident that we will'.now be in frequent and close contact with General Electric Hudson palls on a technical level. / Certainly for general purposes G3 ezcpects to remain within the framework of chlorinated biphenyl compounds for their caoacitors. /on P. S. /)%l f. G. Benignus DSW 233598 STLCOPCB4053865 Mons; .to FROM (NAME ft LOCATION) f. G. Ber.imnus -.St. t.-uif! n.apawi QfTic-? DATE SUBJECT REFERENCE March 25, 1970 CC: W. D. C-. J. R. Richard - WRICH A. Olson Randall Graham - New G. Bryant Yon TO Bill phoned to say that because of the PC3 pollution problem GE at Hudson Palls seek to discontinue use of Arcelor 125-4. In the same connection they also seek to discontinue use of chlorobenzene because it is their impression that it is not bicdegradeable. Aroclor 1254 is still used in small amount for DC capacitors. 1) One carryover is from World War II where the mixture of 75$ by weight of Aroclor 1254 and 25$ by weight of TCB . plus anthraquinone was specified to meet JANG - P characteristic. This allows no more than 30$ capacitance drop from 25C to -55C. Our Aroclor 1242 barely fails to meet this requirement. 2) Although mineral oil has been essentially replaced by Aroclor 1242, a small amount of mineral oil is still used for DC low temperature capacitors in the far north, Por this specific application there is the flammable mineral oil in use and for this same application GE, through the years, also offers the fire resistant blend of 75$ of Aroclor 1254 plus 25$ of TCB. " Due to the PCB problem GE now seek to discontinue this blend called Pyranol 1435. My purpose in going through all of this is to portray that other considerations are now overriding the importance of fire resistance in this particular capacitor application and to point out that in general less emphasis is being put on fire resistance of capacitor dielectric. Of course, another example of this is that with the small amount of Aroclor now used in a plastic film system, the fire resistance of the fluid is somewhat of a moot question. In fact, the paper capacitors with Aroclor are known to have burned. Bill Solberg asked whether we would have something in the dichloro biphenyl range that would provide him with a pour point of -30C or lower. We discussed the prevalence of the crystal problem in our regular line of materials and I explained the composition of Aroclor 1232 in this regard. IN-IO REV 11-6?? DsW 233599 STLCOPCB4053866 2 He is ordering a drum of Arcelor 1232 to investigate its possible use to replace Pyranol 1436. Even if this doesn't work out with complete satisfaction, I encouraged him and he agreed that GE should gain experience with these lower chlorinated biphenyl materials looking ahead towards possible alternates for Aroclor 1242 relative to the PCB pollution problem. It seems to me that the merit of this whole thing lies as an expression by GE of interest in pursuing lower chlorinated Aroclors, with the foreknowledge that these things cannot be classified as askarels. Bill asked about the French Pyralene 1500 which he recalled is rich in dichloro. I told him the pour point of this material is about -22 to -24c. This then led us to the subject of MCS 762 and MCS 717 which are the special low temperature fluids we prepare. These have pour points from -31 to -37C. I told Bill that I thought we supplied samples of these to Hudson Falls and he will look around to see if he can find some of that material on hand. Bill said that there are so many different approaches that could be considered regards doctoring up the isomers and/or mixing things together, that it gets confusing to knew what would be the best thing to do. I told him this is exactly the reason why we want to talk with him and his associates and that we are in the process of preparing ourselves to hold such discussion. While I hate to subject you to reading this rambling memo., am really glad to send it along because it gets into the directions that Drs. Richard and Munch and the rest of us foresee need to travel. /dn DSW 233600 STLCOPCB4053867