Document npnQ5Dy9r04KVrVYEy470zQLG

w r GRACE & co. RESEARCH DIVISION WASHINGTON RESEARCH CENTER 7379 ROUTE 32, COLUMBIA, MARYLAND 21044 Telephone 301 - 531-5711 CONSOLIDATED MONTHLY REPORT DECEMBER 1973 This Consolidated Monthly Summary contains the technical information for December 1973. 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 organi zation who have a real need-to-know. GRACE CONFIDENTIAL 15208090 I MO Y REPORT FOR DECEMBER 1373 CONSOLIDATED EDITION GRACE CONFIDENTIAL NOT TO GO OUTSIDE THE U.S. This report contains Information on the following activities at the Washington Research Center: PROJECT TITLE PROJECT NO. PAGE DAREX Desalting Plant Services - WRC Support ACG Phosphatlc Clays Pneumatic Hose-Sprayed Catalysts Vermicullte Thermal Expansion CleaR Polishing Powder Sylodex Modification Project Auto Exhaust Catalysts GM Auto Exhaust Catalyst Ceramic Monolith 2451 2468 4801 2421 2684 2187 2159 2302 2821 2304 1 1 2 2 3 3 4 5a 5b 5c HYPOLTM FHP Textile Specialties Leveling Agent for Epoxy Lacquer Printable Water-Based Release Coatings ISC Projects - Sea Water Scale Inhibitors Polystyrene Bead-Board Shrinkage Foam Studies: Polystyrene Modification Alrmold Support Fire Retardancy - Marco Polyeocer Resins 1432 1439 1445 1435 2451 1437 1427 1561 1407 6 7 7 8 9 9 10 10 11 Photopolymer Pressure-Sensitive Adhesive Solder Resist Photopolymer Wear Coating for Resilient Flooring Photopolymer Production for Commercial Sale Scanning Laser Project Enzymatic Treatment of Feedlot Bloat Scours Preventative Ammonium Isobutyrate Bound Enzymes ARM (Adapted Rumen Microbial CHRQN-X Product) DAIRY Methane Inhibition Single-Cell Protein Research Division Patent Activity 1362 1387 1343 1314 1385 13 14 17 18 18a 4650 4634 4631 4629 20 20 20 20 4640 4647 4649 4620 19 19 19 21 Appendix 15208091 co: ED IT'ION 4 January 7, 1$774 Hare lu.~.ps were removed from a CleaR reject material and analyzed by X-ray diffraction. They were found to be alpha alumina mono hydrate j not the usual alpha alumina. (Patterson) SYLODEX MODIFICATION PROJECT (2159) Objective Develop a non-asbestos thickening agent for the European thlxotrope market. Specific goals include: 1. Screen samples of commercially available fibers for thickening activity. 2. Update information on fiber toxicity for inorganic and organic fibers. Status Twelve candidate materials are on hand or ordered for jet milling with Sylold silica. Initial tests will mill 3 parts Syloid with 1 part fiber. Thickening behavior and storage stabilization tests are the screening criteria. Photomicrographs of the milled mate rials will also be used for comparison with commercial Sylodex. Five fiber samples have already been milled and are being tested for thickening and stability. Contacts with toxicologists reveal asbestos is bad for public relations and physiological reasons. However commercially avail able organic fibers are generally so large they will not penetrate to the lung and are presumably safe. (Ferington, Marans, Blouln, Orgell) Process Development Support - Jet Milling - Fiber Replacement Mixtures of Sylold 244 (fine-sized silica) and short fibers are being fluid-energy milled (FEM) for evaluation as epoxy resin thickener to replace the present mixture of silica and asbestos. The fibers that have been milled with silica and forwarded for evaluation are: Rayon Nylon Solkafloc Solkafloc Fybex celluloisic) celluloslc) 1.5 denier 3.0 denier through 300 mesh through 200 mesh single crystal, potassium titanate 15208092 % I CONJOL DIT ION 5 January 7, 197b ct cn We a re presently awaiting arrival of more fiber oamplC3 for proand are concurrently trying tc prepare samples of bagasse ton linters fibers. (Blouln) 15208093