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The America Ceramic Society February 15,1993 I hereby certify that the attached copies of Ceramic Abstracts, Volume , 1950, are true and accurate copies, which are maintained in the normal course of business at the American Ceramic Society, 735 Ceramic Place, Westerville, Ohio 43081. Christine Schnitzer Product Manager Ceramic Information Center 735 Ceramic Place Westerville, Ohio 43081-8720 614 890 4700 TWX: 7101109409 -Pi I CFTAMIC ABSTRACTS I z 1950 7T Charles S. Pearce, Editor Mary J. Gibb, Assistant Editor Thelma J. Cecil, Editorial Assistant Committee on Publications: K. C. Lyon, Chairman. Karl Schwartzwalder. R. E. Birch, and J. J. Canfield Technical Advisers: L. G. Farber, Ralph Rose, and Betty T. Owen I Compiled by I The American Ceramic Society I 2525 North High Street Columbus 2, Ohio $- I/ J L * 63 Ctramic Abstract* \ . OS Defdopmt Co.). V. & .,411,823, Sept. 13,.1040 (July 0, SlFr-imprvgnated sOIca-sIumma catalyst All** i> . 1043).--la process for the manufacture of synthetic inorganic son (Texaco Development Corp-). U. S. 2,48} 131 c,, -- gels comprising silica wherein variations in the density of the gel 1949 (Jan. 23, I94i; Dec. 31, 1948).--1. A catalyst efTcci products result from inadequate process controls, the method of converting hydrocarbons at elevated temperatures ct compensating for the variations and thereby producing a product a essentially of silica-alumina complex containing at least .* of more uniform density comprises forming a silica hydrogel, wash weight anhydrous SiF,, absorbed at a temperature within ` ing the hydrogel with an aqueous medium having a constant pH of about 70* to 930*F. ' value in the neutral to slightly alkaline range, thereafter washing _ Silicste-titmnste phosphors. Ferdinand A. KsOr.: _ the hydrogel with an aqueous medium having a constant acid pH ford National Bank and Trust Co. >. U, S. 2,473.960 *TU value, maintaining the total length of the two trashing treatments 1949 (Jon. 14. 1946; in Netherlands Nov. Hi, lH2)._ ; constant, and varying the lengths of the individual washing crystalline luminescent material consists of titanium acti\ treatments to compensate for the variations. ^ silicates in the form of silicate-titanates and of the tired re-.' Seed for production of titanium dioxide and process of making. product of silicon dioxide, titanium dioxide, and an oxi v Max J. Mura. U. S. 2,480,869, Sept. tf. 1949 ( Dec. 30.1943).-- metal of the group consbting of calcium, strontium, cadm:- 1. In a process of making a rutile inducing seed for use in hy sodium, and lithium, the constituent oxides of the sili ` drolysis of hydrolyzable titanium salt solutions, heating at a tern- _ titanates being in the mole ratios of x:(y + z) between abou- ' perature of 70*C. to boiling a dispersion containing a stabilizer and 1:5 and s:y between about 1.5:1 and 1:100. wherein x r- - which, on calcination, volatilizes before the temperature reaches seats the metal oxide component, y represents the silicon dio 950*C. and has polyvalent anions and a member of the class con component, and s represents the titanium dioxide component. sisting of the monobasic-add salts of the metals of the fourth group and the orthohydmtes of the metals of the fourth group peptized with a monobasic add, the monobasic acid referred to in Additional abstracts the class bdng 1 to 2.2 moles per mole of the metal of the fourth group and the amount-of stabilizer being 4 to 55 millimoles per __ Sect V: Comparative effect of various stabilizing treats:*:: mole of the metal of the fourth group, the heating bdng carried on the extractability of fresh glass surfaces. Damping of lumir.c out until* curing b effected and then rapidly cooling below cence of glasses and uranyl salts. Effect of hydrostatic prej-ur 60 *C. on plasticity and strength. Flow of glass. Fundamental stud:. SiJV-impregnsted alumina catalyst and process of preparing. fl on the chemical resistance of optical glass. Class structure ar. Allen D. Garrison (Texaco Development Corp.). U. S. 2,483,- glass properties. Infrared study of the structure of glasses pr 130, Sept. 27. 1949 (May 13. 1944; Jan. 23. 1947).--1. The pared by melting crystals. Sect. VII: Transition of d-alumina 1 method of activating an alumina catalyst consists in subjecting heating. Sect. TUI: Studies on the crystallization properties the catalyst to contact with anhydrous SiF, at a temperature in __ fused silicates. Sect X: Rheology of stiff pastes. Sect XI* the range of 70*to950F. until the aluminum oxide absorbs about Gypsum clay and its thermal dissociation. X-ray studies in tr.rr. 3 to 13^ by wdght of SiF*. fire-clay and shale deposits. XIV--General ind Historical Government dotes case in flat glass antitrust suit--court re ment Printing Office, Washington. 1949. 203 pp.--The report cesses until November. Anon'. Class Ind., 29 [6| 325-27 __ deals primarily with the medical and biological applications of (1948).--A summary b given of the court proceedings of the suit nuclear energy: research into the effects of radiation on living filed by the Antitrust Division of the Department of Justice things, the protective measures established for the use of radio against 8 manufacturers of flat glass products and others. active materials, and the expanding use of radioisotopes in W.W.C. j medical diagnosis and treatment, and in cancer research. The re- \ How to establish reduction to practice of a chemical invention. port also covers the highlights of other Commission activities j Roger T. McLean. Chem. Ms.. 65 [6| 882-84 (1949). during the last 6 months. I E.D.M. Symposium on Usefulness snd Limitations of Samples: Intro- I New horizons in ceramics. Hobart M. Kranbr. Ohio State __ duction. H. F. Dodge. Sampling and Its Uncertainties. S. S. \ Cnie. Eitj. Exft. Sia. .Yews, 21 [31 39--42, 111-14 (1949).--New Woks. Variations in Materials, Testing, snd Sample Sizes. developments are given in the fields of (1) raw materials, (2) Leslie E. Sixom (cf. Ceram. Abstracts, 1949, March, p. 94/>. purification, (3) synthesb (quartz, greenockite (CdS). croeoite Amount of Inspection as s Function of Control at Quality. G. R- (PbCrQ,). rutile, etc.), (4) abrasives, (5) vitreous enameb, (6) g Gauss. Published by the American Society for Testing Ma glass. (7) structural day products, (8) whiteware (tile and elec terials, Philadelphia 3, 1948. 39 pp. Price $1.00.--The authors trical porcelain), (9) refractories, and (10) bonding agents. consider the amount of testing necessary for the acceptance of W.D.F. good material and the rejection of poor material. They also dis- ' New micro methods ease storage snd finding of facts. Anon. -- cuss the general principles governing the degree to which the Chem. Inds., 63 [5] 717.833(1949).--A brief discussion of the ad amount of testing of consistently good material can be reduced vantages of microfilm, microcards, mkiocombinations of the compared with that required when the quality b erratic. two. snd micro- and mini-prints. E.D.M. ^ Organization and function of an analytical and testing group. PATENTS | R. P. Chapnan. Chem. Inds., 65 [5] 718-21 (1949).--A detailed Investment msterisL T. E. Moore and C. H. Watts (Ran- . j description of the semicentralized analytical and testing group of sons 8c Randolph Co.). U. S. 2,479,504, Aug. 16, 1949 (July 12. 1 the American Cyanamid Co. It operates independently of but 1943).--Soluble acid phosphate salts will react with silica at cooperates with other divisions in the research laboratory. C. de -- elevated temperatures (1400*F.) forming a refractory bond suit- i scribes its functions, the types of reports used, etc. E.D.M. able for investments. Ammonium, magnesium, calcium, and Review of pneumoconiosis and dust suppression in mines: odium acid phosphates may be used, added as 3 to lOfJ of the V I, Medical aspects of pneumoconiosis. A. G. Hepplsston. Trans. total. D.F.K. Inst, Mining jrj. (London). 108 [10] 456-64 (1949); Bull. . i Making insulating and acoustical materials. John M. Camp Inst. Mining Met., So. 511, pp. 9-19 (1949).--H. discusses the bell (J. M. Campbell and P. J. Haber). U. S. 2,481,391, Sept, j present state of medical knowledge. 73 references. W.B. 6,1949 (May 15,1945).--A process for the manufacture of insulat BOOK ing material having a specific gravity under 1 and resbtance to -- crumbling at 2270 *F. from expanded vermiculite comprises (1; Handbook of Patents. Harry A. Toolnin, Jr. D. Van Xos- spraying the expanded vermiculite with powdered magnesium or trand Co., New York. 1949. 800 pp. Price $9.00. Reviewed in aluminum oxide. (2) adding a gel composed of sodium silicate, Chem. Inds., 65 (5| 798. 800 (1949).--'Thb worth-while analysb magnesium fluosilicate, urea, and water, (3) adding plastic day, of patent law and "patent considerations" b intended for the pro j and (4) extruding the mass. D.F.K. fessionally trained client rather than the lawyer or solicitor. E.D.M. Additional abstracts Sixth Semiannual Report of the Atomic Energy Commission. Sect. H: Hbpano-Moresque ware. Italian majolica. Sect Prepared by the IT. S. Atomic Energy Commission. U. S. Govern VII: (patent) [Design for an all | ceramic space heater.