WILLIAM0. BROOKS A. T. BURTSELL R. K. CARLETOX TENNEY L. DAVIS
ABSTRACTS
C. K. DEISCHER J. HOWARD GRAHAM B. CLIFFORD HENORICKS
D.
W. HOWARD E:GRETA LICHTENWALNER OPPE
C. M. P n m r ~ LEOPOLDSCHEFLAN A. A. VERNON E. D. WALTER ,MARYELVIRA WEEKS SIDNEYWEINHOUSE G. H. WOOLLETT
KEEPING U P WITH CHEMISTRY Filtering gas through glass. W. H. ATKINSON. C h . Met. Eng., 45, 1 7 6 4 (Apr., 1938).-Within the last few years a
The yield of high quality motor fuels is being further improved by advances made in the polymerization of refinery gases. Satufibrous glass has been developed for filtering gases. Being in- rated gases are first converted into unsaturates and these are polyrn&rircd into motor fuels by aid of catalysts. organic it is not aflrrtecl hy tlw usual temperatures encountered and spark, will not ignitc it. (>laps nil1 not nbsorh mdi%rure. Today over S12.000.000 is bring spent annually in laboratories Consaucntlv. there i, no s w l h n r of the fihers to caure a c1o.m~ that emnluv over 321,O enzineers. chemists. 2nd nhvsicists. and of the'pore8 in the fabric. Most flue gases contain acid cony their re&;& work is h a v h g a marked eff&t on i a d i n e manuJ. W. H. stituents which act on organic filteringmedia. The inherent acid facture. resistance of glass is thus highly advantageous in comparison New chemical fibers surpass silk. Chem. Met. Eng., 45, with other textiles. The glass filaments used in making textile material average 525 (Oct., 1938).-A new material known as Fiber 66 is a thermoplastic polyamide resin formed by heating in substantially equibetween 0.002 and 0.003 in diameter and are non-curling. Some question has been raised concerning the life of this prod- molecular amounts a diamine and a dibasic acid or an amide formuct. Laboratory and semi-commercial tests indicate it will ing derivative of a dibasic acid under proper conditions. I t is believed adipic acid is one of the important acids used. Bristles, J. W. H. perform satisfactorily over a period of years. ribbons. rods, and tubes can be formed from it. Changing processes of petroleum refining. G. F.RT~OERALD.sheets, The outstanding characteristic of these polyamides is elasChem. Met. Eng., 45, 172-5 (Apr., 1938).-Characteristic of ticity and water resistance. They also have high tenacity, high current changes in the petroleum refining industry is the steady departure from established processes. A few years ago 70-octane fiber orientation, good chemical resistance, and good aging charfuel was regarded as a great achievement; today 100-octane acteristics. The fibers are lustrous and silky in appearance, but can be delustered and will take common dyes readily. gasoline is on the market. 1.W. H. All refining processes are being subjected t o investigation. What about western phosphates? EDITORIALSTAPP. C h m . One of the worst offenders is the "doctor" treatment. I n this treatment free sulfur is added after sufficient time has elapsed Met. Eng.. 45, 4 8 6 7 (Sept., 1938).-Ninety per cent. of the for the merwptans to react with the sodium plumbitc. Silfur United States phosphate deposits are in Idaho. Montana, Utah. and \Vyuminy 'l'hr Anxonda Copper Nining Company is is often add& in crcejs, thus making the gosolinc corrostve 'l'he doctor treatment mav also cause nolrsulfides ro be fonnrd. opvratm): il mme at Conda, Idaho, from which il ships i t % ore to which in turn produce a knock. .\naronda. .\lantana. and converts it into so-called "trinle" suncrOne of the newer sweetening agents is copper chloride. which phosphate. convcrls the mtrcaptanr inru disulGdes instead of polyrulfides. l'he chief mine in hIonlana is near Garrivun and sends most of Similar results arc ohtained by the use of lrad sulfidc. i l i pho~phaterock to Trail. 1%. C., where it is convurted into Thc ucc of sulfuric acid as a treating agent is hv no means ~unrmhosuhateand :ammonium ohosohntc. approaching a n end, but the technic of;ts;se has keen greatly ~ & n gi937.83.436 long tans weremined in Idaho, and 50,834 improved and is more carefully controlled. long tons in Montana. J. W. H.
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