Document mpvYpY4EJEYLxKpqYDZnzOmbQ

FILE NAME: Chemical Abstracts (CHAB) DATE: 1939 DOC#: CHAB017 DOCUMENT DESCRIPTION: Book Originally Published in 1939 by Lanza 0! 1835 Chemical Abstracts 1836 Vol. 33 cond. of insulating materials at temps, below 0. NH- 1 Phosphinic acids of aliphatic hydrocarbons, etc. [de cooled brine served as the refrigerant; Cu-constantan tergents and wetting agents] (U. S. pat. 2,137,792) 10. couples measured the temps. Frozen moisture had little Esters of pine-wood pitch [in elec, insulating compns.] effect on the heat cond. of felt, since felt is repellent to (U. S. pat. 2,138,193) 22. Amino ale. acrylates (U. S. HjO, thereby preventing the formation of a continuous pat. 2,138,031) 10. moist heat conductor. Moist cock granules were poor insulators, but when waterproofed the presence of moisture had little effect on their heat cond. The waterproofing of Kausch, O.: Handbuch der knstlichen plastischen rice hulls had little effect on their insulating value. Cotton Massen. 2 Verlag. 2nd revised ed. Munich: J. 584 pp. M. 21, bound M. 22.50. F. Lehmanns cloth and flannel were little affected by moisture. If cotton cloth is waterproofed, the threads will not absorb Lanza, A. J.: Silicosis and Asbestosis. New York: Oxford Univ. Press. 439 pp. $4.25. the moisture and the air spaces between the threads are Muntsch, Otto: Leitfaden der Pathologie und Therapie filled with moisture and the heat cond. will be altered. H. E. Messmore der Kampstofferkrankungen. 5th revised ed. Leipzig: Compositions for coating the inside of barrels. E. G. Thieme. 149 pp. M. 10.80. Lehmann. Seifensieder-Zt:. 65, 770a-771(1938). Natta, Giuliano: Appunti di chimica industriale dalle J. W. Perry lezioni di G. N. svolte nell'anno accademico 1937-38. Turin: A.Viretto. 286 pp. Phosphates, their role in detergency. J. M. Gillet. 3 Soap 15, No. 1, 25-G, 69(1939).--Three types of phos Rmpp, Hermann: Chemische Fundgrube. Eine Aus phates find use in detergency, orthophosphates, pyrophos lese von 250 unbekannten ehern. Patenten und Erfindung phates and metaphosphates. The first is a water softener. aus allen Lndern. Stuttgart: Franckh. 193 pp. M. 4.20. The pyrophosphates have a powerful peptizing action and a marked specific solvent action on certain gums and res Shell, John S.: Dental Materials. St. Louis, M o.: C. ins. The metaphosphates bind Ca and Mg in hard water V. Mosby Co. 413 pp. $4.50. Reviewed in Metals f in sol. form so that water can be made alk. and treated Alloys 10, MA63(1939). with soap so that no pptn. of any kind will occur. Stammer, Friedrich: Pflanzliches und tierisches Eiweiss. E. Scherubel. 4 Seine Herstellung aus Magermilch, Pflanzensamen, Tier Bactericidal (waxing and polishing) products for floors. blut. Berlin: Elsner Verlags. 239 pp. M. 7.50. Carl Liidecke. Seifensieder-Ztg. 65, 667-8,691-3, 711-12, Chemists' and Druggists' Year Book and Directory for 731-2, 751-2(1938).--This review is concerned prin Scotland, 1939. Edited by J. B. McVitae. Glasgow: cipally with the prepn. of floor-wax compns. contg. anti Munro & Co. 320 pp. 2s. 6d. Reviewed in Pharm. septics and the effectiveness of such compns. J. W. P. J. 142,11(1939). Brake linings and other friction materials. H. E. Kempe's Engineer's Year-Book of Formulae, Rules, Blank, Jr. Automotive Ind. 79, 346-53(1938).--The Tables, Data and Memoranda for 1939. 45th annual is parreodduecstciorinbeodf. varSiouuitsabtlyepems aacnhdinmesethfoordsexofamtegs.tinaugtothmemo 5 sLuoendreovni:seMd ourgnadnerBtrhoes.,dLirtedc.ti1on 1o1fs.L6.d.St. L. Pendred. tive brake linings are shown. Graphs indicate the water and moisture reaction of ideal (theoretical) as well as ex Determining the amount of gas in liquid or plastic mate cellent and poor (both com.) types of linings and also ag rials such as those used in well drilling. Sylvan Cromer ing characteristics of these linings. The manufacturers of and Irwin F. Bingham. U. S. 2,138,141, Nov. 29. A brake linings in the U. S. are listed. Leopold Scheflan method (suitable for detg. if a drilling mud is "gas cut" ) Domestic (German) raw materials used in conduit con includes placing a sufficient quantity of the mixt. in a closed struction. Giese. Papier-Fabr. 36, Tech.-Wiss. Tl., chamber normally substantially to fill the same, subjecting 437-41(1938).--An illustrated descriptive article, dis 6 the mixt. to variations in vol.-pressure relationships and cussing briefly advantages and disadvantages in the use of computing the .percentage of compressible fluid in the asbestos, wood, paper, glass, porcelain, Al and synthetic chamber in accordance with known laws for the behavior resins for piping. Louis E. Wise of gaseous fluids, to obtain an indication of the presence Tanning of casein by aldehydes. P. F. Dyachenko and of gaseous content in the mixt. and an indication of the K. F. Shelpakova. Colloid J. (U. S. S. R.) 4, 337-45 amt. of gaseous fluid therein. App. is described. (1938).--In NaOH solns. (pH over 10.4) casein takes up Injection-molding device for thermoplastic materials 25 mg. of HCHO per g. The Na methylenecaseinatc such as cellulose acetate. Celluloid Corp. Brit. 492, wfoarmteer.d iIsf pthpetda. lkb.y saoclne.toinseppantdd. tbhyenacsiwd eollrs thtoe areagcetlioinn 7 64M2, oSledpt.m2a3t,er1i9a3ls8.. Josiah Robinson. Brit. 492,718, between HCHO and casein takes place in a neutral or acid Sept. 26, 1938. Semipermanent molds and cores are made soln., 1 g. of casein takes up 12-15 mg. of HCHO. An wholly or in part from aluminous hydraulic cement, alogous compds. are obtained from casein and acetaldehyde contg. CaO 42, A12Oj 48 or over and Si02 less than 7%, and acrolein. These compds. contain the group NHCH- mixed with graphite or other refractory form of C. The RNH, which links together casein mols. and dets. the sta H20 used should be insufficient to hydrate the cement bility of the product. J. J. Bikerman wholly. The molds may be dried up to 600. Specification for compound; sweeping. New York City Molded laminated products. Henry W. H. Warren Specification 5-C3:38T Tentative, Jan. 25, 1938. Board 8 and Reginald Newbound (to Canadian General Electric of Standardization, Dept, of Purchase, New York, N. Y. Co. Ltd.). Can. 376,832, Oct. 4, 1938. Sheets of paper, L. Wilson Greene fabric, wood veneer, etc., are coated at room temp, with Observations on statistics of old-house borer. K. liquid, solvent-free polymerizable styrene contg. an oxi Eschcrick. Anz. Schadlingskunde 14, 113-16(1938); cf. dizing agent, e. g., benzoyl peroxide, in amt. (0.01-0.5%) C. A. 33, 2417.--The accepted means of control of the old- sufficient to ensure polymerization of the styrene, and a house borer (Hylolrupes bajulus L.) are (1) hot air, (2) modifying agent, e. g., tritolyl phosphate, in amt. suffi HCN fumigation and (3) treatment with liquid poisons. cient to make the styrene nonelastic and less inflammable, The general problem of control is reviewed. L. N. M. Destruction of rats. II. W. Jack. Agr. J. Fiji 9, 9 and the coated surfaces heated and pressed simultane ously to polymerize the styrene in place and bond the sur 2-4(1938).--Na.HAsOj or BaCOj is generally used for rat faces together. poisons and some tests have been made of Zelio Paste, a Phenol-formaldehyde molding powder. Ludwig Cserny proprietary prepn. contg. T! sulfate. These poisons are (to Resinous Products & Chemical Co.). U. S. 2,137, used with baits and the NajHAsOs is most satisfactory. 568, Nov. 22. A process of prepg. infusible, weldable About 0.2 g. of the paste is necessary to kill a rat and when molding powders comprises partially condensing a phenol not fatal is claimed to make the rats sterile. Because of with more than an equimol. proportion of CHjO in an alk. the danger little use is made of Ca(CN)2 dust. medium, adding to the partial condensate a modifying J. R. Adams agent which is one of the group consisting of amide-form-