A premising source of butadiene is the pyrolysis of the di acetate of 2,3-butylene glycol. This diol comes from the fermentation of grain or molasses and may be recovered by extraction of the fermentation liquors. Various

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INDUSTRIAL AND ENGINEERING CHEMISTRYthe optimum solids content of the dope solutions from the standpoint of application by brush was 10-15%. Cellulose acetate binders were dissolved in a 90:10 mixture of acetone and ethanol; the solvent for ethylcellulose was ethyl acetate. The effect of increasing the percentage of plasticizer in the bonding plastic was to lower water absorption and elastic moduli while the percentage elongation increases. Impact and tensile strength values showed no consistent trend and were quite comparable. Water absorption values were determined both by direct immersion in water for 24 hours in accordance with A.S.-T.M. recommended procedure and by exposure to 100% relative humidity at 77°F. for 168 hours. It was considered satisfactory to immerse the no-pressure solvent-release specimens, since the plastic binders had relatively low amounts of plasticizer and therefore plasticizer loss would not be significant.In comparing the resulting products of two methods of lamination with cellulosic binders-that is, the low-pressure type which was first discussed and this solvent-release build-up type-the following facts are apparent: The pressure types with comparable plastic formulations have greater tensile and flexural strengths and much higher moduli; they also have lower water absorption.On the other hand, solvent-release no-pressure constructions are superior in impact strength and are lighter in weight, having densities around 0.8 to 1.0 as against 1.15 for ethylcellulose lowpressure structures and 1.3 for cellulose acetate low-pressure types.The method of producing low-pressure laminates, involving mechanical cloth treating and pressing equipment, indicates that they lend themselves to volume production. On the other hand, no-pressure, solvent-release laminations do not lend themselves so easily to mechanization but do have the advantages of requiring simpler and lower-cost equipment for fabrication, and can be built up into larger units.

its poor electrode efficiency is attributed to the fact that dialuric acid undergoes air oxidation readily. The high electrode efficiencies of hydroquinone and quinhydrone (in excess of 100%) have been shown to be due to a continued oxidation of the products of the initial oxidation reaction, i.e., p-quinone itself is easily oxidized in alkaline electrolyte (2).The electrochemical behavior of the alloxan-dialuric acid system, which has previously been studied polarographically (8), further emphasizes the aromatic nature of pyrimidine and the similarity of some of its derivatives to benzene compounds. ABSTRACTVoltage decays of electrodes in sintered type nickel-cadmium cells were measured in cells stored at temperatures between --18 ~ and 52~ The heat of reaction of the cell was calculated to be --64 kcal/g mole. The solid reaction products of the cell were studied, in situ, by x-ray techniques, in special cells designed to fit on an x-ray diffractometer.) unless CC License in place (see abstract). ecsdl.org/site/terms_use address. Redistribution subject to ECS terms of use (see 128.218.248.200 Downloaded on 2015-04-07 to IP ) unless CC License in place (see abstract). ecsdl.org/site/terms_use address. Redistribution subject to ECS terms of use (see 128.218.248.200 Downloaded on 2015-04-07 to IP

Low‐temperature (<200°C) fused‐acetamide thermal cells, using highly porous cathodes, furnish appreciable electrical energy on discharge. The cell, Zn/2.5% normalKCl‐normalacetamide/normalAgCl ,Ag had an average discharge voltage of 0.970v (at 2.0 ma/cm2 and 100°C) for 360 min. Cathodic polarization was principally responsible for termination. Voltage regulation and uniform discharge depended to a very large degree on silver chloride electrode. Effects of charge rate and addition of small amounts of water on cell discharge were also measured.