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GRACE CONFIDENTIAL CONSOLIDATED MONTHLY REPORT SEPTEMBER 1972 This Consolidated Monthly Summary contains the technical information for September 1972. Because of the highly confidential nature of Its contents, circulation is limited. Those receiving copies are requested to limit access to only those members within their organization who have a real need-to-know. 152081 w r. G RAO EE & co. RESEARCH Wa o Resea-c^ DIVISION Clarksville, Maryland 029 GRACE October 2, 1972 MONTHLY REPORT FOR SEPTEMBER 1972 CONSOLIDATED EDITION GRACE CONFIDENTIAL NOT TO GO OUTSIDE U.S. This report contains Information on the following activities at the Washington Research Center: PROJECT PROJECT TITLE NO. PAGE Ceramic Bonded Vermiculite Commercialization of Nuclear Technology Commercialization of Ceramic Technology Sea Water Scale Inhibitor Reformulation and Evaluation of Mono-Kote Muffler Cement ZIC Product Improvement Auto Exhaust Catalyst Auto Exhaust Catalyst Contracts for Nuclear Development 2663 2745 2185 2451 2 659 2264 2681 2302 2821 2782 1 2 2 2 3 4 4 5a 5b pb Eire-Retardant Polyester Intumescent Laminates 1407 1656 Evaluation of Fluorocarbon Treatment of "NT :x" 1550 Ndn-Halogenated Barrier Resins 1426 Airmold Support Program 1561 Foam Studies 1427 ISC Projects - Cationic Polyectrolytes 1440 & 1441 Crosslinkable Hydrophilic Cationic Polymer (CHC) 1428 1432 Textile Modlfier/Iire Cord Adhesive 1432 Lowenstein Project 1428 & 1432 Hydrophilic Polyurethane Foam 1428 Proctor Application 1432 Mattress Ticking 1560 Household Sponges 1428 Hot Proceed Foam 1428 Hydrophobic Polyurethane Foams From Emulsions 1430 6 7 7 7 8 8 9 9 10 10 11 12 12 12 13 13 Cable - Gracerad Tel. (301) 531 - 5711 15208130 T*X - 710 862 1886 I October 2, 1972 PROJECT TITLE PROJECT NO. PAGE Lithographic Printing Plates Solder Photoresist Dry-Film Photoresist LETTERFLEX - Scanning Laser System 1373 1387 1372 1385 15 16 18 19a Adapted Rumen Microbes Ammonium Isobutyrate as Grain and Haylage Preservative Particle Bound Enzymes Methane Inhibition in Ruminants Scours Preventative Bicdegradability of EDTA Fermentation of Bagasse 4623 4640 4647 4648 4631 4629 4649 4634 4608 SHIELDEX Magnapore Catalyst Production Monolith Catalyst Box Catalyst Sea Water Treatment Chemicals Production 1648 2417 2304 1059 2453 20 20 21 21 22 22 23 24 24 24 25 25 Appendix A - Research Division Activity Report 15208131 ;ITION -3 - October 2, 19(2 Two cf the more promising polymers tested in the laboratory are Fioerger FA pOH (80/20 CONHp/COOH, MW 10') and American Cyanamld's Cyanam.er F-2c (82/1S CONH2/COOH, MW 2 X 105) . Of the two, Cyanamer P-26 is more desirable from a practical standpoint because of its greater solubility and because there Is no decrease in perform ance when overdosing. For these reasons, Cyanamer P-26 (DAREX 42) was field tested at the Grapetree Bay Hotel, St. Croix, Virgin Is lands. Good results were obtained during the period of the test (~3 weeks) i.e., very little scaling after the small amount of scale expected during the initial scaling period. Further tests are planned at Key West and the Middle East. Samples of scale from a desalination plant in the Virgin Islands were characterized for organic content by Infrared, mass spectrom^etry, and elemental analysis. The samples proved to be largely inorganic. Calcium and magnesium were the major constituents by emission spectroscopic analysis. (McKlnney-Kllllnger-Peters-Ensing) This past month we have established the Incompatabillty of both DAREX 4l and DAREX 42 with the high level of copper ions which occur during a plant start-up after operating on acid. Fortunately, this period of high copper levels Is short-lived, as the copper level decreases to less than 0.5 ppm after about 20 hours of operation on DAREX 46. We have also shown that acrylamide homopolymers have a threshold effect on Mg(0H)2 precipitation. Thus, the threshold effect; has now been established over the complete range of acryla mide-acrylic acid polymers from molecular weight 1 X 105 to 1 X 10'. (Block) REFORMULATION AND EVALUATION OF M0N0-K0TE (Project 2659) The purpose of the current Mono-Kote program is threefold: (1) Determine the effect of environmental conditions on curing of MK-IV and MK-V. (2) Determine the factors that promote snrink-crack. (3) Determine the effects that gypsum manufacturing techniques have on Mono-Kote properties to include retarders, stabilizers, and aridizers. Item (l.) Is a continuing program and Is scheduled for completion December 1, 1972. Previous data have shown that curing and aging behavior is dependent on drying rate which is inversely propor tional to relative humidity, temperature, and thickness; and directly proportional to air velocity. No further information available at this time. 15208132 iU:\ 4 October 2, 1972 Mcnc-Kotes III, IV, and V have been tested for shrink-crack prop erties. MX-III and MK-IV have shown this phenomena; MK-V does not Water content and geometry of the supporting structure appear to be the governing factors. Drying conditions do not appear to be a factor. Small differences in gypsum quality can have an important effect on Mono-Xote properties. Increasing retarder content from 0.02^ to 0.1^ will change set time from 3-1/2 to 10-3/^- hours. The result is a somewhat weaker product. There are differences in gypsum qual ity obtained from different manufacturers and plant locations. These differences are being resolved with the purpose of implement ing a quality-control program to arrive at a standard product. (Xraus, Legal) MUFFLER CEMENT (Project 2264) The objective of this project is to develop and test high-tempera ture cements and devise a cementing system for sealing the auto exhaust monolith structure into a stairrless-steel casing using a vermiculite-sodium silicate based formula. Two variations of the basic formula using (l) sodium slllcofluoride, and (2) calcium car bonate hardners are being tested. Laboratory results have been successful where the monolith-cement combination is tested at 70 - l800F under cyclic conditions. Up to 1000-lb pressure has been required to press the fired monolith from the steel container. Tests in auto-exhaust systems have all failed. The differences in test conditions follow: . Auto System Lab System "Live" Monolith Temperature Range Fuel Vibration yes 70-1200P Gasoline Yes No 70-1800F Natural Gas No Steps have been taken to determine which factor(s) may be control ling. (Legal, Xolbe, Herrera) ZIC PRODUCT IMPROVEMENT (Project 268l) The objective of this project is to determine the usefulness of the Allentown Pneumatic Gun for commercial application of Zonolite insulating concrete at a wet density below 50 pcf and a dry density below 28 pcf. It has been demonstrated the Allentown Pneumatic Gun can be used to apply ZIC as a lightweight roof-Insulating concrete, but present techniques have not met the dry-density specification 15208133