November, 1946
INDUSTRIAL AND ENGINEERING CHEMISTRY
(80.k) Ibid.. 28, 1137 (1S95). (81) Itenme, E. H.. J . C'heni. Soc.. 41, 33 (1882). (82) Sachanen, A . S . , and O'Kellv, A. -4..L*. S. Patent 2,242,900: I N D . ESG. C H E Y . , 33, 1540 (1941). (83) Schsad, R. E., U. S. Patents 2,290,211 (1942) and 2,387,948 (1945). (84) Sc~linierling.L.. Itiid., 2.3S5.303 (19451; al$o 2,302,721 (1943) and 2,393.SlS (1946). (85) dchmerling, L..and Durinski, A . Jf., Itjid., 2,357,978 atid 2.361.762 (1944). (86) Scliriiei~liiig.L . , and Ipatieff. T'. Xi..I b i d . , 2..349.S34 (1944). liulze. W ..i..Ibiii.. 2.37S.040. Example I11 (1945). chulze. W. -1.. and Lyon, J . P.. Jr.. I t i d . , 2,395,199 (1916). ( 8 8 ) Yempotoivski, L . , Be)..,22, 2662 (1S891. (89) Simons. J. H . , and Passino, H. J.,J . A m . Chem. Soc., 62, 1624 (1940). (90) Yisitlo, K.. J . Soc. C'hem. I ? d , J a p a n . 44, Suypl. Binding 104 (1941). (91) Son.a. I,.,J., U. S.I'ateiit 2.367.5335 (194.5). (92) St:tlily. I;.E.. I / k , ,2,373,062 (1945). (93) T e x a s C o . . :~iioiiyniousr e p t , t o Technical .4clvi-o1y Coininittee, AUK.
3 1942.
1203
(94) Thomas, C . -I., ".11i1iydrous .Iluiiiiriuni Chloride in Organic Chemistry", pp. 80-100. 45G-63, S e w I-orli, Keinhold P u b .
Corp., 1941. :95j Thomas, C. L., and Haeti-el. T-.. V. S.Patent 2,384,505(1945,). t96) Truffault, li., C'onzpi. r e n d . , 202, 1281; (1931;). . (L-.S.Y.l - .H .
L..S;on.:i, 1.'. ,J..
atid Titvii- a n d , J . iitl .ktiiu.iti.
PRESESTED before t h e Division of Petroleum Cheinistr:,. a t ttt. ;OSth \ l e e r i n g of t h e . l ~ ! ~ ~ r cCHEJIICAI. as Q O C I E T T , .itlantic City, N. J.
Moisture Adsorption of Textile Yarns at Low Temperatures
1
il-hita.ell ancl Toner, T e i i i l e Research J.,16, 2 5 5 (194G).
l f . Ii..Plus.tici,t~-
,$kit . I l i ~ s i i t i .1934, S O .1. 14.
CORRESPONDENCE
SIR: In regard to the artirle b y It. c'. D,irIiiiy :ind in thc, M a y issue of IXDCPTRIAL ASD ESGISEERISC w(1 \vis11 to point out tlint nioisturcl r~gaiiiedby tertile fibcrcan Iiardly follon- thv c o w s ( ' iritlic:~tcd by tho interpolated data in Table 11, page 527, of the x t i c l e citcd. TIT-o ohvious f:iultappear n-hen oiie inqiects the u ~ i i a lplot, regaiii vs. relntivl, humidity, for n-ool, purified cotton. and viscose rayon (Figurt, 1). First, the form of these interpolated isotherms, shon-n dottccl. h dntn in no way approsirnates that of Wii.geriiik's, with ~ v h i i ~the arc cwrnlxtred. In fact, Darling niid Rcilding's isotherms intersect the Kiegerink isothernip which arcs of the recognized form. Second, continuation of their interpolated curves t o zero rpgain would result in intersection o n the abscissa at a positive value or' relative humidity, :t situation which seems completrly unjustifiabk. D:u,liiig and Belding note the preparation of their samples i n the same manner used by Wegerink. This fact is iiot sufficient evidence to justify the incorporatioil of liis d a t a into their correlation, sirice i t is n-ell known that history of growth and treiitment affect fiber properties including nioistnrc. regain. Thcrcaforc.. it is nearly impossible for the samples to he identical, and i ~ exnct ~ i correlation n-ould be fortuitous. If the materials tlici $:me, the spnping betxeen Weperink's 158" and 96" F. should bc of t h e wnie order of ningnitudc as ticltn-cell hi1'. line and tlie Darling-Belding 40' F. lints. &is Figure 1 skion-5, thi. points :it XI(", humidity are almost 011 tlic. 96" F. Wicycrink linc for ~ o o and l purified cotton and dirc,c.tly on the line f o r viscose. T h e 90''; re1:itivc humidity points are above tlie rangc' ot' IVivgeririk's data but generally sho\r the s:imc lack of evidencci 0 1 s:iniple similarity. As further evidence, lines are includcd o n the \\-no1 nnd cotton figures showing the position which is prcilirtcd :'ram the TTlcgerink data for the 40' F. isotherm by :I dc'virc, of the v-riters'. I t n-ill be seen that thcl isotherms are m u c h I I ~ ~ I re:isonably W pl:ic.td than the esperiniental points of
.I..J . -4r i r
INDUSTRIAL AND ENGINEERING CHEMISTRY
1204
Vol. 38, No. 11
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Othmer Plot of Fiber Data
I n reference to comparison with Wiegerink’s results, we not only prepared our yarns in the same manner as Kicgcrink but also used samples from the same spools which were furnished by the Kational Bureau of Standards for the express purpose of making our results directly comparable with his. Thus, any differences in samples must be due to changes during storage, not to characteristics of growth or preparation. A s we pointed out in the paper, desorption data would he valuablc additions to the results. K e regret that it R ’ ~ Snot possible to do this work under our laboratory program or lvith our facilities. Since the data 1%-ereof direct practical importance, irrespective of the full theoretical interpretation, they were published, together with the suggested interpretation. The hehavior of the testile yarns below freezing as a surprise t o us, as to Whitwell and Toner. ’However, in a process so complicated and poorly understood theoretically as adsorption o n textiles, the final interpretation must probably await further and more comprehensive work on the w b j e c t . It. DAHLISG h X D H. s. BELDINC:
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FATIQ C E LABORATORY HARVARD USIVERSITY BOSTOX, ~IASS.
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Projection of Laboratory Reaction Velocity Data into Commerical Design-Correction
4
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Relatrve Humidity
Figure 1. Regain-Relative Humidity Isotherms for Wool, Purified Cotton, and Viscose Rayon
Our reason for submitting these remarks is the omission from the original article of the regain-relative humidity diagrams, without which the discrepancies represented by the data are not apparent.
J. C. \F”ITWELL A I D R. K. TOSER TEXTILE RESElRCH INSTITCTE, ISC. PRINCETOZ S . J.
SIR: 11-c are grateful for the preceding comments. We recall Khitwell’s review of our work when it was in the form of a report’ to the Ofice of Scientific Research and Development. K c regret t,hat the substance of this earlier discussion n-as not brought t o your attention prior t o publication. In regard to the main criticism, our feeling \vas and is t h a t the experiments were carefully and accurately done and that our interpretation was the most likely until further experimental results forced a modification. The differences of opinion regarding the validity of measurements and the interpretation should, in our opinion, remain as Iionc.st differences of opinion and be a stimulus to further, more estensive work.
The following errors have been noted in our article, which AND EXGINEERING appeared in the September issue of IKDUSTRIAL CHEMISTRY: On page 887, line 3 should read “ln [ a / ( a - r ) ] ” instead of “in [ a / ( u - z)]”. On page 889 under the heading “Comparison with Previous Prlethods”, the first and eighth lines should refer t o Equation 3 instead of Equation 2. Literature citation 8, page 890, should give the year as 1937 instead of 1939. JOEL H. HIRSCH GULFRESEARCH & DEVELOPXENT COMPANY PITTBBCRGH, PA.
R u s t Preventive Oils-Correction One of the literature citations was unfortunately omitted when \%-esubmitted this paper for publication in IXDUSTRIAL .4SD E r GISEERISG CHEMISTRY. It should have appeared on page 609 of the June, 1946, issue as citation (12), as follows: (12) Zisman, W. A., and Baker, H. P., paper presented at Gibson Island Conference, Am. Assoc. Advancement Sci., Aug. 10, 1945.
On page 603, column 1, line 10, citation (12) v a s also omitted after the word “equilibrium”. G. P. PILZAXD F. F. F A R L E Y SHELLO I L COYPISY,INC. W O O DR I V E RILL. ,
