Document p2g39RBkkdL66qg0qJ4QJnjjj

vr. . 1 - ` ;\7 .. : ' v.i.> ' . Wp xSl *' \ SPECIAL REPORT ON LEADED ZINC EXPOSURES SUPPLEMENTARY TO RC-64 AND RC-68 : i't 5 J/iT,Vifc: o<<_. */ / < . r ' Prepared Uys J.' W.'Chapitt ^ ` a iv, U.-y V 74 V 'ni''; . ' T'r,' * . ^ April 26, 1944 -Wi V ' *r.a* l-"t`^- .8j<ce$V -v**. -3-V ' ; lit. piR-- ? u'- v -. .. ~ , .''* ',, !' sir?o * sVIdr.."h ej> >$ifc . *. ' ; -V>:: /: ;`:.v ,siu'v7 f'-w-'i*.'*Jv; r; i.r,;i-.Uv v >*' 5$.'"^irfij ''r,r rte-4 -v. `' v >rfc" ^`'Sr ALLIED RESEARCH" IABORATORIES CHICAGO; ILLINOIS ' :......... ' 0007-SWP-044687 0007-SWP-000114057  , -SPECIAL REPORT OS LEADED ZINC EXPOSURES ,r , .. , ; . ................. . ' StipPLEMBOTARY TO RC-64 AND RC-68 . . General Statement v ' These panels -were prepared for exposure in the fall of 1940 by C. H( Adams as Problems 1315 and 1316 In general, they comprise tests at Florida, Chicogo and (Soffeyville of various SherNin-'Hilliams and com petitive leaded sine's both as o 6-fumed and mechanically-mixed in Rx 471 of 1/4/40, in Ex 3/5' of l/5/40 and in a spooial high lead titanate formula of Ex 375 -, The janels are all two a oat work on cedar hovelled aiding, ex posed 90 couth*- Jtx 450 Undercoater is the prime coat .used .an all -panels; \ The purpose of this report is to supplsnent Bulletins EG-64 aild EC-i58 end to bring up-to-date the exposures of the entire leaded tirio series, both whiteand tinted. The previous bulletins dealt only with the . :V-'JV:.- . , 'C 'V.' ^ i1/-'' * *;- ' tiiit Berios'* In order to present the main conclusions in a reasonably Tl S* ..v. 'I'- re.!*".' c.U.Ci. .<,..1 Z"--. shbirt space, the results are given in the form of general statements in a ? ; " '4j w <- - ik&tt * V?jt T.*~%l "Y'i'r .' /iccs/lAudM &;- SwtmOry 'of Results and Supplementary Observations, Thoso panols wore . '' 'studied just recently with C* Hi AdamB, this boing'tho sooond such thorough ?j. " i/c:-:V cS-ViJr'-y^K ''-v - . oert^inAtion given tho panels, Mr, /.dans is writing a raoro dotailod analysis, V' V - ' T>'IV f r''" ` supplomontary to;one .Written last yoari prosonting'dotails of special in- *ui*y]fv--'S\ - '. ` V * :'-tn* .dvv'--*.!!:: .*; torost 'in pipnont rosearohi \- <! Correlation botwoen the throe sots .is' still 'good;- jrith tho . , . .... ? ~ V<,." . 1. ' ; > . *-; / Florida . toots at 36 months timo far ahead in general.Trbathoring; Coffay- V-: , '. ..A*:'; > villa's at 38 months intoimodiato, and Chicago's at 40 months showing only tho earliost stagot of failuro, The omphasis in this report will bo on .tho Florida panels booauso they nra farthest advanoed, but all indica tions in any way cohtrary from othor souroos will bo presented; At ono .*<* 0007-SWP-044688 0007-SWP-000114058 -2- timo it was thought that tho Florida panels oould bo discontinued/ but oil nro hoing ro-axposod) . Composition of Points Tostod ' Rx 471, 1/4/40 Boslo Formula ' .. ' Loaded Kino 44i6# by wight of pignont Zinc Gxido Basic Load' Sulfate 29;i#. 15:7 Titanium Dioxide) 2030 T Asbestino Basic Load Carbonate 14)3# ?. 22)8# S n ir 13.1# ` " ' : It n it-. V 1 * ., Vohiolo -- Regular-(5091) treated lihsood typo; 3 gall bodied linsqod, ' . "/ ' "l -* * - 1V, ' '* r : " " - ` Tho only doparturo .is in a B'pooial load titanato formula ; (Panola 4536-7)) using 53 lbs) or 5# of load titanato roplaoihg part: of 2030 T on a oost basis). '. *. .01 /-l'- . ' Vfith sane axooptians) the tint series, boats tho ' snmo' loaded V.-- .1". - ** V.-. -'-v. > -.`-A' G-.iV.V > ; .... ... ' rinos.y'/--*' r, --j1 * j --* - .--j **,;&'-*- * * `'*i "**ir-' 1- j -l - ' / .*nfV--> * -- ' Basio Carbonate or: Sulfato ; - .. 10# `Cv-sif.'Joi'i-ift .rV; :. iLoadod Zino ) 65/35 M ` ' ., 1 T- -.:ulC9{ / v :-;:"';';'45.2#;;: Asbostiho X. i'- hw1*- ys y-id/L '$*-} :: * . '. - t :<rj* ' * . .`'f-:.' Load Titanato ' ; : qr. 1. .a ...2..5# ; - . ' *i. 1 - Non-ohalking TiOgT 2031 : 14# . Tho spooial materials abbreviated in tho tabulation of ro* . . r .. suits r.ro * , . 't " /' ' A Loadoct Zinc s Lohigh 635 ) 65/36 typo) aoicular ZnO. in a mechanical mix) N <J 2* Co .. Q007-SWP-044689 i 0007-SWP-000114059 I. Lehigh 60 . - 65/35 type, co-ilimed, Io t t oil absorption, N.J.Z, Co* Azo 35 Lr.... - 65/35 type, probably co-funed, American Zinc Seles Co. ` . -t f ' $ ;. E*P. 30/y0 ,70$ load sulfate, 30$ zino oxide, Eagle-Pioher Co* 412 . -' Oslo 65/35, co-funed . . B* White Leads .. Hat'l HTS ,, high tinting strength basio lead carbonate, national Lead Co, S-nf HTS * T* * * Sj sW 9.P. - high tinting strength basio lead carbonate, our . special .. . j. .. Quiok Process, bapi.c lead carbonate, our IB .dry ^9.SZ7. ' - .basio lead sulfate, ncm-acioular ' -v; N4BL3 . .... ... eoioular.ibasio lead..sulfate. National Lead Go, -i } s. Tr'x 'ift-y.T. .,. - ./ * C# vZino Oxides 'L-r< i.y!: . 1 ? 22Z^S3 .. ^,Ajso.,acicular, Amerioan JJino Sales Co. ^'.'1-, -'et*.'' >"'2 "h r.l; p'-'.' ,v;r i': ZZZ.-ll . ^ri'rv: ditto, slightly greateg. aoiaulnrity .. ' . r `-A ` -. ...... ' '' ZZZ.22 r. .ditto, ^^"S.^Q^ulnri-ty.. V. -'v . T * -.sQ.r.p :/.. i(j> , fc-If..>_=i; . . . ^St, Joe ^ jv ^ \ ncaa-aoiov1ar# St, Joseph lead Co* (Green, A-label) : ICtr50 ' ; TjiW iH9rBe. H0d.tl medium'.oparse partiqle ,site,' non-jtj.. ..,^,.^'. ; ^ ; 1 r .' aoiculor N*J,Z. Co* ..:- ' . ' XX~603 : . r-*' -h'."f" iy.'&V/ *' ' v 5* -''"v-;... *-*.1 ; -; Hopse' Head large particle else, non-aoioular ' . tho ju* , , si. . .-v,-.sn-.?.i, W V.'-.' ,-h' . r,; i-.nd r $ j^^^ZXi.92 j*cHorse'Hea^r small partioje ejse,. nmaoioular e;* W.-/... >:.'vN.J.Zi Co.* > /; v .. /v : Stannary of Re suite .. *>r ril5- >n:iv litii.T-. : .- rVltV'Vj ash'-'yhSi:'. S : Port I - Mechnnloal Mixtures There is no doubt that Str Joseph tino oxide ip the poorest of.those tyosted in durability. Aso.ZZZ.33 npper.rs to be the best sino oxide for jneohtmical mixturoe. Aso ZZZ-11 rnd ZZZ-Z2 (only one sample of 0007-SWP-044690 each tested) are equivalent and appear to show somewhat poorer durability than' ZZZ-33. Horse Hoad XX-503 is slightly superior to XX-50 in four out of five cases; both are quite clodrly i'nforior to ZZZ-33 and superior to St.: Joseph.'- It is obvious that tho,mochanically-mixed leadod^tin^ paints are inferior to' the oo-fumod iri general durability; tho ldttor' show no seripus chocking or'cracking at' Florida-,) while many of the' former soon noa'riy roady to flako off.- . ' '* _ f The whito loads uis'ad ih mechanical mixorf dro moro difficult ... - ' * f to'distinguish^ hdt oho,- National's aoicuiar basic' load Sulfate is oW viously poorest; -One might give a slight edge to our 16 dry .over our HTS load,- 9 dry and.National's HTS, hut the differences orb slight aidvary with tho' lino oxides.used*- . .. ' ^ ( c*. , . ^ . . Bior'e ao. ho important difforencos^in' gonor'al eppoaranoe oxcopt as a rosuit of sofious visible bracking* XtV, i f--V -n . -yX:V?z^ ; -..in'" ' - -v .Tint 'Series `--r^ -..- v -y- $>- v' 'v;^ :''i^v:-'- yT"X**-*-~'5 x m,x tsf;;>u.des-".- ' ' ` ' ' , / Tho tints, in gonor'al,' do not show tho.markod differences ; :i a;-.- hTii tn- .CaMy; <4-<C-y> <-.y- botwoon - cd-fvmod and moohaniaaiimix formulations as shown in tho whites; ot;. dif*-.*>* . .- `J.-.-v- *> ' /-iN ill. tho buta-fcdhding diiforoncoa oro botwoon the 1895 typo and tho' Z031 typo. cj.uy te:>-;i:'.':.5C'.,r.yS# *&-; ,1m-Uy-.^ y :..au.* b, - . Durability difforonoba" probably roquiro no serious, oohsiderationat present* i,-:i ill. ; V'/V-Jlv- y'-'. -`./'-T'.'.-in .y, -. Cl\ieago.panels shoir.no bhbokitog or oraoking, Coffoyville very littlo, mostly mierdseopio/ and7 Florida oonsidorablo to ba<i, much less than tho whito8? Since many combinations wero not oxposod at Florida^ it is diffi cult to fit tho slight differences in durability into tho general order bn8od ofi tho white series, and ho attempt is being made at present. The 0007-SWP-044691 0007-SWP-000114061 -5- 2031 1 typo sooms to have considerably itioro rosistaheo tochocking and cracking than tho 1895 typo. Tho main variations in tho tint sorios nro in tint rotoii- tion nnd dirt collection, and tho so aro not great oxc'opt for the contrast botwoon tho two formula' typos, load titanato and non-chalking titanium 1' dioxide* At this particular stage, tho Chicago and Coffayvilio panels : . aro of more value in judging xthoso oharactoristi.es, than tho Florida pc.no Is,* because tho latter havo boon chalking soriously for a long onough timo_ to approach a maximisn of fading and a minimvmi of dirt collootion.. Hawavor,' tho Chicago exposures aro not particularly good at this time far showing *. . c: - ; :L-V- ,V ri i.iv"'. " ' eitho'r of tho so characteristics booauso most oftham.nrs holding a' groat . dod'l of chalk, rosuitiiig in vary bad fading, of tho *4hi!ikHliM]Ew .-tjypQ .> . s *** - ; ` T. i. ` 'Tho 2031 type of formula shows more fading and loss dirt ~V>; vi:r - >vi; :.Tivr ' .. i than tho 1895 typo', in gonoral'# Tho'load sulfatos, Ifctional aciqulhr nnd - 4; 'i ' ' `. 9 dry, apparently haVo ohalkod most and now shew loss dirt and- mqro fading than' tho' other vriilto loads. ' This., doos hot shew, up with tho 2031. type; in ; ;5>Si':'>hv^</' faot,r thoro aro praoticaliy ho difforoncqs due to the various ' zino.tacides Pt'P"'- = :;V, '.-y^ ' " and white loads usbd'in this typo .^Though they hold a heavy mask of chalk,' / - ." :.h yl1. i"~-' tho amount 'of dirt hold is not' sarioils at prosbnt*^' Only a.fow cases of j,.. -Viv^s^ :>.- r:v 'o'* difforonoo' duo^to'itao. mtido' aro~iibtiood i Tho. kio aoicular oxid.os orb ' . :i ... . ' Xs V'; possibly nibit "bottor in color and oloaning tliih tho''othors, with'xX^SOS ' i-, ;Vot.?. .'--ir.'.i'ii ,'x '. , :* ; ;.:ii ii> and XX-50 'just slightly poorer and St. Joseph ihtormodiato. (Soo also ;l: Gonoral Observations;) .'1:.. ''J t/.'.i'V'hvc.-'. ' ' Part II Co-fuenod bonded Sines A Regular typos, Tlhito Tho Florida results, fairly consistent hut not ontiroly * I . n i i \ 0007-SWP-044692 0007-SWP-000114062 ivy-,' --6- conclusive, indioate a definite order of durability for those materials. In a few instances, the.Coffeyville panels show enough failure to be of sane significance, and they do not agree particularly well with the ' Florida'indications. t . .t . >t ' National's aoieular basic sulfate is clearly poorest of the white leads and 412 .best of the leaded zincs, but these are.the only materials tested whioh are outstanding-at present* The following '- 'I ' 5; *. ' ' -*1`: i ' order is Indioated, based on Florida tests, with .certain Coffeyville ex ceptions noted: ............. ^412.best leaded zinc (in resistance to checking and cracking) Lehigh 60 next best 5-r ->r-V 'Hi r0 >V:-i. \ ir. Azo 35 L third, but very-olose to Lehi 60, espeoi&lly at- Coffeyville > .-rtr`TV*-, ifa. ; -I ii'-.v-as . Lehigh 635*poorest, but only in two out of four cases, doubtful in . anothor^'V-V ^'-j '.-. ; .'* I'-.-.'-*-; S-7T Quick Process the best white lead by . a aliovt margin .- .J V!::' . ' ' ' kS-TTH.T.S; a'very-close 'seoond, even slightly better at Coffeyville Jt i ft! i.lr-ib it- : : ^ National H*T.8 a rather poor third r .^t:.S~yufyy.; Si4~Sdi:, L-jlJpiv National Aoioulnr sulfate a poor fourth -s71 tiVinS , .s&hivn* I '' B. Speoial Typo Formulas- Tfhite1 * "-sViV, .<, * ,yf m -JffM m w*,J- *? i. V/',*' : i3t * - iw*l>l #.:*J J > -***..*< -_*' . . i 'Thepnneis tooting a -69?^ lead titannte substitution are'good .- in both durability and appearoaoe, at all throe looations* 412 and Lehigh . * -iv', .vi.--.vjVVv..?tilv>+*r ' --`l: - -h:v . V - : - 635 seem oqunl in this formula, which seems to be one of the very best of -.; : Ji-it J : :. ' .. .... -. all -the whites.* .; : ., -;!! y`-.v : I .. - i:.. ;- L - [,* . . Tho Eagle-Piohor 30/70 formulations (with zino oxida added .A.Trdsvdi*:*- > " .>*'. . " to match -the lead-zino oontent of the other eo-funod materials) show up fairly woll but soom to develop ohooks more than tho orthodox leaded zincs. / 0007-SWP-044693 0007-SWP-000114063 XX-92 zinc oxido is poorest in this formula and ZZZ-11 and ZZZ-22 porI haps slightly hotter than ZZZ-33., ' C..: Regular Typos, Tlntod The previous gsnornl remarks as to evaluation apply horo also*, durability indications aro slight; Chicago and Coffoyvillo. ro. suits/; especially th*.-lattor, are host suited for basing gonoral conclu sions at present as to appearance characteristics., First, tho co-fwied formulations show loss instanoos of serious dirt than tho mechanical mixos,. although in almost half tho cases thoro is no difference, and the cb-fumbd show more instanoos of bxtraino fading., Second, within tho co- fumed group of tints/only tho Coffoyvillo exposures show:any differences ih'dirt. or "fading iuid/: rather surprisingly, all tho so. difforonoos aro in the 2031 ..typo formula. Tho dirt difforonoos aro insignificant} tho fading varies from slightly bottor to slightly worso -than tho .1895 typo. , . Tho main difforonoos in fading duo to loaded zincs in tho 2031yformula may bo summarizod .as 'follows:. ' : i.'.L'mth 18 dry as tho supplomontnl vdiito .load,' 412 shows slightly . / ; ?. worst fading} Azo 35 L, Lohigh 635 and Lehigh 60 oqual. , / 2. ;,Tfith SJTf H.I,S., 'Lohigh .60 is slightly poorest, others equal. 3p .`. * national HfT.S., all aro equally poor in fading.^ ^' 4. w * %". Aoioulr.r.basio 8ulfr.tb,,412 is poorest, tho ettiors equal and dofinitoly better, - ^ . Tho last group, probably boeauso of very slow chalking, . is boat us to oolor, whilo group 3 is slightly worst. Incidentally, tho Chicago oxposuros verify tho good oolor of National Aciculnr sul'fato '1 .. -5 V i 0007-SWP-044694 0007-SWP-000114064  ' ,./. . r. in proctionlly tho only oaso whore thoy show n difforohoo'emong tho co- fumod stmplos. D, Spocial~ Formulas, Tintod . Tho Eaglo-Piohor formulations show up ns woll in tint ro- ; . . I '. tontion ns tho' average' of tho regular groups just oitod, opccdpt that with / XX-92 and possibly'ZZZ-il sine oxidos, it is not quito as good, Inoi- dontnlly, XX-92 in "this ihstnnoo also' shows notnblo microscopic oraoking. Tho special 1/3 1895, 2/3 Z031 blond shows oxcollont durability and fair"solf-cloanihg,jbut tho tint retention is nearly as poor as tho' poorest of the e<>fumod formulations`just mentioned, Lohigh 635 and ii2 dry .porfora equally woll in this formula, m; >4 I 3 ZZ7-'r y/3.5 'SV n- . :&Y V -:;-.- i V. 5: ;:~54v JVr--; i- '..... r*' V ->V.v,:a.<; L^Vf.V. 5. //*. - xi'i" r1.' 'k T ' ' < '% . 0*. i- - *(? r:. . " ; ^ * .m ity ( - X -, '.S- U. . *.'{' g , M.:.4 s " 'yj-. ">rn V.-stv) -v, , 3 v, * *. : . ' j.-r. - ,. v, ? ; t f!*, \ . /-' , ' y I._> \* - : vc ; , : ;i 'ri I vi i 1l 0007-SWP-044695 0007-SWP-000114065 4500 ~F -4501 r 4502 |>4641 : 4503 4504 . '4505 fi*4542 .V .. s .'+ . * * - ifj *;? I.,-? . ,. > * +/' /.* v - w v-- ;-v. > . . - 0 to ': . -9-. `.* ' +' i.i * I .. .' Examination at 36 months Florida Exposure, -Ihites . :Vr'h$p't-.r oy: -';i., w / : fTest ' 1 Materials - Chalk . Check -- to; Crack to Mildew Ueohanioal Mixtures 222-33 A Hat. HTS St'.': Joe A Nat.-HTS XX-503 A Hat.'HTS XX-5* 0 A Nat. He TS \ . 1> B VB" B B -to"-: A A .A' A ' -> " (C) m VB . B C (B) C: 'C S. ZZZ-33 A S-vj' Q.P. St. Joe A " : " ' XX-503 & XX-50 A' ' :B 'B B B. A A A (S) m s VB (S) m (c) c (B) c. s V.-. ' 1 Dirt S s (S) s s s (S) s Gen. Ai. / * P' VP p. (C) r \ii i J r p VP (F) (CO t 450S > 4507 ' |'. 4508 <+4543 V.i'lV ,4509 .. . 4510 (4511 : 5*4544. v ZZZ-33 A NABLS St. Joe A ' XX-503 A . XX-50 it " n.t,-..,*- :*/? tov : hu ZZZ-33 & 9 dry St. Joe - A " ", . 'XX-503 A KC-SO 'A . " "r-" . B A' VB A BA BA B* ' A B ' A . B- A'- B. - A' (B) VB VB' VB , S :: VB (C) , - B 0 (B) s c ' .c. s VP <C) p (c) p s ' (F) ' c ' " S. c,. C. . ' s' . (F) c P. 'S.' . P. ;S ).to (F) 4512 ZZZ-33 k S-W HTS i4513 . Joe * flu . 4514'"' .. ; ?' XX-503A "*> n 'XL B A ' c". to B. . A VB C V A ((B),to s" (F) S. . p p *+4545 1 /toXX-fep A 'r.'"r" 'V-;v ' ' B 9eiu_ A' ? tohklJL ' c to;- toto*: *. B to. S'to -p. a'*?1-* s'.hfek' ' "to'; . :4516 . - - v- ZZZ-11A Mat* BIS ' A -(b t......... : ~*c'r;v'~ S to' "J(F) F++4517 i ZZZ-22'A Nat. HTS _ ' .b..to .A "m,~~ e?:T'X: :*:r; c to ;.($& i :jV c, :s. ; to C 'to to Ntoto* V S' tov it Part .II - Co-fumad4 - A. ARegular Types .IP X- Ototo ito >4619. y. - 412 A S--1 tiy P. (*.-., .B & :4520'--F-'^hi-63^ 4 - * B:V A c VS ni-'to c ) ^ (c| ; y ;,.'(F) 'A ' (c) c . i.o' ::`4521i- LekV 60 &' -:? A\f;. toO to' -4522";:^-:aA*too 35 LA '(H : n ..... i. fk 4523 .... iyfjhgfyryityjti i w y ; to to?*.. 4411?2 t4 SR-JTi tHtTpSr *!. -tito B _<* M A`. U'. : (S). . (B.) A' ; (s) C ) -.to- *-it*-; ;tov <5 .(c)' to(F) ^S ' F to to s'^-r 4524 v-'Lehl 635-A-HTS.-f,;S;. : B 'J , A. : v>'- ' ' tr `. ::i ;;V (c); totos'toh(- F.; 4525' r-B/"' 'A' .'vto;; (s) to ' (c): F 4526' Y,l\*o S5L -A/ *c* : f .toto ?- b 'i*t;; : ' H S' m j (c ) f- to'''- /.+rS 4527 ' 4l2 A Nit; HTS to ;5 r b to. : s' a s ' C if}- ? : .. U;r _ * (F). ' .'* c -B's'. F' 4528 Lehi 635'A Nat. HTS B s m/ . (B) m c sF 4529 . Lehi 60 A . VI*... ir' B . s m' (B) m . (c) s F 4530 Azo 35L A ", ' 7B J s m ' .(c) (C) ' s F > * Actual exposure time only 32 months +* Panel .4515 omitted. This panel is identical -with ,,. 4519'in .all respeota. ._ > .j .0 :% %. 4 :0 1 i 0007-SWP-044696 0007-SWP-000114066 Mildew Geni Dirt ' App. S (P) S- (F) 8P ) (F) A tr (C) c . (F) A tr C s F A Cm Sm . (C) m VB (c) C C cs (p) s (C) s (B) .. c . (F) F F (F) A to (s'). (C) to C (S) to P tc. (C) (F) Chicago V 40 months . ' i- Chalk Check Crack Dirt ' - " .*' i- ' \ P Part I '- Mooh> Mix>jl 4500 v C* . A- :. '-4:,;,' (C) V 01 - . c js m ' (c)' ^(c) ! *4541'.,....... C' ; /A; A'/; . . (C) . Gen. t.- /. (F) (F) (F) (F) 4503 V, .*05 4542 y"':. *` .' q\ ' A \ 2*1*3 S:.r; cIt .;!/^ . i;*.y'!. '- /it. ** ' - - .. s vs A **Vv(.fC* ) nr * ttU (F)' .,'Vs . if-' . ' . *.. 4506 ; . n ' : l?s :;.n'"I >. 07 ...n V :S ... 11 0B ./ 1 VS it 4543' n It - 'A .'. n ' IIM *" it ` n tt 1* * 4509 '* " 'vti'* ''r-` r TS. 10 tr" w* a . 11 . n if . ' vs 4544 ti ; w : . ''A" tr tt n, : It ` it 11 , it tr Coffeyville v 38 months, : -... . General Chalk Check .Crack Dirt ~'"App.' ' (B) 7B ;. (B) 'P Cm -A 'A St s; C B *v "5 m (B) (S (S) (5': A-. Sm A, (B); (s): ; n (igt ) it .Si :C\ it 'A, (B) , It S si .C B A B C A . (B) BA B C A .' S (B) A (B) C A* C C A (B) 0007-SWP-044697 0007-SWP-000114067 -0.1- ,t Examinations (cent* ^--' " Chicago - 40 months i; No Chalk -Check Crack Dirt Gen. App. ,c tt It :c A - If 11 'n y ------ A (cj (F) '((ssii *1 If tt If A' II If ^516 W&17 n it . ft tr (S) tf II ` 1! ' - If Coffay-gjllo - 58 months . . General Chalk . Check Crack Dirt.' ' App.' ' 'c ' c " c <B.) c tt A A A A A A S B -. (sII ) C II B tt A It A (G) tt tl It - C o-fimed - A. Regular Type .C 11 ft A If * ir A (si .(C) tf -IFIt ) It II 22 II * if 11 U tt n * ti ; w - *- -) :-~\t r tt -n tt (S) A tt 0- II II \i : tt ' tt 11* tt ' cA nM tt / n tt It (c) (s) (g ) A VS (c) ti tt II . It tt II tt It YS it t tr* .* n tt *n n' S m s f< ; it > . A tr.ti t- it . ,, ?! " 28 J-,29 t`:30 it /.- W ':*Vn , it it v: tr - . vs vs 'A it w it' tt tt tf ' ! it it f* ii . ti . tl ,<c) / ii / tl . it ' It k- c ti It - r n (0 ii tt , .* , vstt II - ;n . (--.'1. i* . n. tr*.:. . ii f; .tr J* ")''o ' . :b r.' (B)!-,b w , " W-v\ : .^It .tt j1' ^ s m' :(C)!7> ii > '.V.v. B>- ' s . vc?-"^ _ ; - * -r . [%>' . . i ,v; ?' B.` Lead Jitainate Speoial Type v -..'.:.-V ?v'V-A;.-W- . ; ^535;w...c ~~tr~*~(c7 ;-(f ) `36 .. O-.V.'-.f ;.Vy>. . " * ;A . It S,r. ;. -:\rf:' v.c}%'. / '(?v - : C A*-' >l K(s) . -j. . n / NO . -^.(G) ,,T |rv *V`.V *!.>* ^ ;>C. Bagle-Picher Speoial Type .!* iiSwflr-. ',& ;a .-;;a ^ ,iW~"Tc) . (f )' 1 . n ** 0k :v 0' Cm c '> a * "*> " ' / b (%",; " ?? g - tt ^\M r-**q .'>'.-' it *vv n *? - , ( tl .. S m (s) iuy'" jv v. ` II ^ : s m .; g - ; tl - V ^ -i ' Ur ytv .-'i . "3 ' V::1 Guide Paint ,'. 'l8 -y - . ; "c ." A - ' *,- ' General Note a? A tO ,.(S) ", ' k1* V . tl'-) tf- C , r` A to Sm ' t: ' >! A to ,.n (c).- ." . 1. No flaking on any panels. . ;2. Dirt rated separately from mildew, as far as possible, 3. All Coffeyrille panels show hail marks j no serioua failure due to them so far. 0007-SWP-044698 0007-SWP-000114068 ' -777 :7 :::.;v^-;. ;; '.;7, Examination of . Tint Merles "-.' Florida/ 56 months (Panel ; Test -No* -. Materials Chalk s^Guide 4546 F Rx 375, C 450 (B) to B .7.; part I - Lead Titanate Type if, .A, Mechanical Mix 14547-F ZZZ-33, Nat. ETS B '4548 St. Joe,,"- " B "'4549 XX-50, ,!' - " B 4550 XX-503, " " B Check Crack .Mildew tr. to,-A to (C) to C (C) m c Bm (B) m Bn 'B m : (C) m (C) m (C) m ' S m ' -C C c c Gen* ' Fade .-Dirt . 'APP (b ) to S to BC F B (c) F B s 'F B sF B cF f 4551 .14552 i 4553 ^4554^ .ZZZ-33, '18 St* Joe, 18 ' XX-50,>18 XX-503', 18 B (B) m S m c B C in S m 's B sF B sF si * ^4555 H556 4557 . 4558 "4559 4560 : :4561 `4562 ' tv, % . $*>?. ' *4563 4564 4565 4566 ; ZZZ-33, NABLS . St .' Joe, " 'XXA501 t" \ XX-503, '* " '. ; 1 : ZZZ-33,-' 9 ' St. Jde, 9 XX-50, -9 XX-503i'9. VLV , '; ZZZi33;'-SJII ETS St. 7Joe/ " ", XX-50, . " ? " _4 :,:ry vr k VB B ' B"m r'B (B) 'B 7 : Bm k -,v. ..(B) : :: ' C i. VBv ,-B I r B .' C ' -;B m y5:; ' (c }'In -;7'C-7 r'B.si #}.(<?) 7 *.(B) 7 , C r L B ;m ,v -(C). -*V .: . *n .A -..v- < '.(B) (B)V m V(d) *.-,''&M i456T>H^4lZ,-l8 * C .- i(B) m '. * (C); m A(C) ^ 14570 1S26 18 .'.(B) - 5 C m ;-(S) :n '' '- C - >t45711i.^Sr:h^^:`|:*-!>*.L'e*hi-"''' 6' 35," 18 '' -V 'iX' *` 777"A-' 'Xv'-ri^v'*i**'-'. ,4572 Lahi':60,': ' 4573 <v I'*5WL/ is |%74 ' 412,'s-Tr HT.S 4575.; v> iLshi 635, n ' 4.576 " ' Lohi 60, 4577 ' A*o'35L, ' n * ` "s: i. `V(b V \ :V-i. " - j(B) '(B) (B) *- vr '.' *L * .- -'C'm p) m Cm 5r(S) m ' . ' S m ;-' (C) m Cm :'C -r'c 'c (B) . **- `C : F ! Vi* (B) .`(3) -i. C.F (d) F -'B .. . >) .(B) , |^(B) ((c) (c) ,(C) {(C) :VF7' F -F . :f .. "(B) ` ; ic * -;`f '*7 ;...(.*b! .;` f.s- * *C -e*. F V -* ' .t ' .ft' 1 *-V> :gl:- (c);; :: ,F - C --'F-; rv". v-: - ; f fm '.*> 7 >.v* :- y\ * - "*-- C - - 1 '7-- : i "fr.- i r* i ' ' . . "B *, ' C. /.B : ' C . F . . '-B !< c `F ` VB , c . F IS 4578 4579 4580 4581 ' HTS Sb.tRTS Lahi 60, Nat.'HTS Azo 35L, Nat.'HTS (B) (B). (B) _s , (B) m Cm Cm-' Cm (C) m Cm (B) m 'c c c c B cF B c FB cF B cF 55 i -i 1 0007- SWP-044699 0007-SWP-000114069 -13- .. Examination, of Tint Series - Florida, 36 months (cont'd.) ipenel ?fo. .... .' Test : Materials Gen. . Chalk Check Crack Mildew Fade Dirt A. 4582 412, NABLS vf. ; 4583 Lehi 635,'NABLS ' .4534 ' . : Lehi 60, NABLS , 4505 ; Azo'35L, 4" [ ' (B) (B) (B) (B) .. Cm Cm (C) m C in. &58C ' 4587 4508 .4589 E.P. It 30/70,'XX-92 - ,-zzz-n II 4 * , ZZZ-22 tf ZZZ-33 (B) , (B ) (B) (B) Cm Cm (B) m (B) m .C m Sm (S) m VS m Cm (S) m (S) m Sm .c C C c c c c c B / C . B. c Bc Bc F F' F F B c (F) B c. F B c F Bc F Part II - 2031 T Type' ; A* Meohanioai- Hix. .4590" ;. Aa 4547 ^4591 - As. .4546 .; 4592.' As-4549 '4593. As.4550 ; * -` a * * v4594 Aa ; 4551 ` 4595 As 4552 ^4596 "As 4553 4597.. As . 4554 . 4598 ; 4599' 4600 ,4601 ^ As -4555 As 4556 \: 4602 ?|/^As V4559 ' ` (0 *46,03 :; As 4560":-HJ* - v;4 1 ; "fet;-'' H- T |4605^;- VAs ;4562 K'yf t. V. - V 'I.-.. ' : 4606 y&jAs .4563' ; , (i 4607 ?~r.rAe74564 i - j M v 4608;-' ............ ` -4611: As 4568 4612- r. >As . 4569 -4 . :9> Co-fvane^ ' . 4610; .'As 4567 ' ' If! (B) Sm A. '' Cn c . 'B _ c (F) c. -3... c! . (F) *m * m . * . tr c , B ' ' c`` ' (F) (C) VB. (0) ;; P.' (B) m \ Cm ' -* m (F0 ` ; 00 . c ' ((CC)) l. .* s i. 7- d ; m [<; ; B.K fi. . m -t` cV (F) ` F. * \ l V: i -- -- . VV -4' . V* ' C m VS m' ;'rv'v.CC,f-'- B ." r.'c*";'*-. - m 6. B.nr V.c. -C B^): c-` f ' ..(F) **. . m . .' Cm c' ' B m..'. m '. C,,llr' x. -- ,1;,' Sa ' Sm C;," : (B) m c* -' (B) . :\C. ' ; B. .1*. . ' ' C . ' B C ; D J, c"; v, .(F). c:>: (f ) - / C v"'y.; (f O c (f ) (C) c 1a c-.: (f ) 0007-SWP-044700 0007-SWP-000114070 ' ';.v -*j V-\. ,' . I '. ' V -14- Exwainations I, . ' ... ' ' Chicago - 37 months panel . /Gen. i;/ No. Chalk Check Crack "Fade DirtApp. Coffeyvllle -.38 months ... . .General ;. Chalk Check Crack Fade Dirt Appearance 'Part I - Lead Titanate Type l Mechanical Mix: ; 4547 (C) A A (B) '548 (C) It It tl 1549 It tt II B (.B) It it II 1 C. It . F M, (B) . (F) v b ; VP C tt tt tt . tr m (B) ' (C) (S)m " M tt It II (Sw )- n. it. ;4552 {"4553 4554, It It : tt (c) ' 11 ir it ti 11 it tt 11 l tt tt tt BP II II II tt n (F) tt It . c Sm (C)m (B) (C) (G) '4555 ' ;4556 F455? ;455fl !4559 ,4560 56i 4662 4563! 4564 45654566 , 4568,' *4509 : ( -! jjj; .r B;1 ,45VT 4570 4571 3572 &&&>>. 45735; 4574 4575 ,v 4576, : 4577' t 4578 4579 t- 4580. 4581 ti . it tt .. it nt ) ' c ' n. tt tt .11 it . . it .\ It ' tt 11 11 it .11 . it ? rt 1* . It . tl . ^ . VB C tt tt ; ft . tl tl :/* . ' H " * (c) (P) i ` tt tt . tl . It ... It.. tl , tt . o.j n s: tl i-f : ; < ..' j':-' lt^' F . m. c tt . It ; It . 11 tt - n tl..'' tt . B V-- B " p If ' '11 , tt r; tl.;. V tt li. ' II . I* - n..;' : ' 11. ' . .tf. aV'v " . tt ; tt . ; >tf.. ,, ' ..ti. tt : - * * V. ! 1; ; .1 X (C) "> .<y1 ; . 1 -4 tt 1n r w>-; " (B ) < v;- n . Vv "C-- r j >t^^hr.;""i : (C) n,r`- 'it i .-v. . *. -~7i-fumed TT .' *.W ' ` ff,T' ' \ t:V': C V-: ; A . -kr- .VB -c 1 (p) ' n i- It <- TO (C) . 11 , .,:f . -" ; . If-. ` n l.. tt / ` ` j- C . tt , .n: . t. ; W u--., ; n ' i`t '` If*. *?: j `ti n ,, -* <-' ': * 11 . 11t 1r It. . '-< . C:; tl., X nr > *. 11;. t ' (c) ` If* ' tt . 19 II. it . h ? n tt It It tl it .it'. tt n It 11 tt * fl M II n tl tl tt it tt . tt ti tt tt 1 .t it tt. ti tt it It ' 11 ti ti' n 11 A' C m (b ) (c) " S.a It : tl , " ' A'''-' II . " 3 m\: It Jr " (s)i- fi II It II ll / n : II . S'; it, (G) It ; ! 3t ", () ";: zp Jft-l fev "> '(p V? H?s,. j v s ;3k - *< "-i ::^(g ) j j - f. , tt1:; & a >a C' ; (C) tl ';!.ji-,-' *4 !; . *- 'ih^:f v /* GVi-Aii -y-j rK ' A-: A VS B. >:: s ' f'.' ' n. ' A ; " tt) n r. :>'4 . t-' ; `c `V I/t4:iV}v1 .*, n\* Es ^yvVn'j r- t"' !"rV:y:y*. * .tt"-;;,;;. tt. ,wM ' -A'- w t; - ,**.r - it V' It, -' n'V'v' ' ti ll* tt tt II s* tt , tr v tt" tt' it* It' * v b" 11 tt It H n' ti tt ; tt tr n tl tt ti tt' It tl" tt : ! A 1 -4 i :1 1 V-1 ;-3 !S m r-if 0 :yl 9 ,J 4. ;.r 0007-SWP-044701 0007-SWP-000114071 Gen, Dirt APP` Coffeyville - 38 months . .. . General.. Chalk Check Crack FadeDirt Appearance (c1? ) (F) It C It tt 11 * -** ,, *1 it *11 " ,i `it - ii *11 11 'll It II 11 tl tl tl It .'A It ' n it H tt It A VB It tl ' tt . *. tt tl ,S It 11 tl 11 11 11 11 B II 11 VB tl tl 11 ' tl >tl 11 :,V It tl ''it `tl It . . i- cit P. It 11 n. ii It It t, . tj ,,C H v v-A\n n **A A B s'.'.' K(o) It. (cv . 11tl N It `11 .* A 11l n *tt ft * n 11 ii tt It 1! It *?rr (o ),,, tt K TF (F) s `:r?' *11 * t' ** ^' ` tl V 11 tl - ' ' it . 7 tt * .n VS m iS . ' v . It .Cm ' ' n!: ' :A n.- It 11 Ir , T< tt r*"t.- ti . {/:, F y. .(o). .V.} $W**.v* ?n - n" 1k T f* It v tl ' ' n.ft f. it i '.4; -- ^ fer n it A- 'c >/ ; XI . B s S': ;Sn . VS m :(C> ..B' . -?. 'h .. - .? " :u" t ' >4-'* ;? 7 (S)n (S)m. J* '.ii**'v y? ?*. V1*" 6?0-v3%." ^ */ I* ' `*V >> -:-s <1 . 604 ' * " H V'M r v. * '> . -h */x s.* IV' if * . ,,tl :: v'r^'rf''v : " .F . * >i- ; iv tt. .>. t It _ It rS'/n U_y!>;In An i. . If ^.Jlt . tt :y -;i M.; tt /A1-?"*r:*;' : B It > IT.'; A.S m'-" V It " ; A : ,I'%.-'.-; it v ' tt r|` . :'Vw : ::'v''it * i rn i!c ) ` V'tt . A . ^ It : : :-n -as. it > vtl *4' *9' . a ;-! V Sm it rtF'V- i, ,, FJ * tt * :**. (P) t * rt V. -H . *:. V <t jT.%'Vv ` * * H \:r- tl t " 11 7 StaeM. v i'.-'-.v /i'- '(Q) V- ,/t -. r*\iv* - 0007-SWP-044702 0007-SWP-000114072 Chicago 37 months Coffeys! lie T 38 months parfal -Test ....... -- Gen* ' > " . ' Gen t fNo, ' " " Mat/ Chalk Cheok Crack Fade Dirt App*, Chalk Check Crack Fade Dirt App, B'.1'- Co-fttmed MO -4613 4614 4615 As.4567 c As' 4571 - (c) As 4572 n Ae 4573 .tt '. 3616 4617 As 4574 " M As 4575 ft -4616 As 4576 ''4619- As 4577 It n A .. , n II ' n '* A it ti ii 11 n : it ti ti it n . t WB VB ; (c). F .it tt (F11 ) it It Ii tt n tt. WB- tr ,1* - w II ` It P1 C it . . A - tt . VS m ti VS m A VB S tt B it 11 .tt II n n .11 F M H ti 11. . tr m ' 11 11 it (s) m (S) m B M VS m ' A VB tt A A B. It s s s 11 F F (0) C it r 621 r'.As - 4579 ^fijr II *4*'. / il i '4622 'As,4580 n 462? 4581 11 " 11 n ri . It 11 W : - it ...: ji k ' 11 - ,* V >v' :, it ' < ' 1 ^ * 11 t * 1 ; , tt 7 it ;vi' (F) F . '' n ` :n > ti 11 n ' ".'11 ' VB . 11 n '' M i tt .11 n n F n ' 11 V ", 24 ^As'4582 lit t *'^n a t.*. "n ' *' " ' '! V-.n 25.^As.4583 ; (c)... 4626 `'7-As HS84 >*n ii It it -wH'Z<- .-- rnB ,t :, (C). 'ti '*v: !f ri r-: H tt ^ 'M Sm 7 A" ' 11 > . V' Jo),(B),, tt ' 11 - " 'T 4627 1 .. iA. :sj 4 -5. 85 <>. *.; :::n v.tsd'.fc'' i 5;; _ :-vc,, y : ' /* . 4630 As 4586 ,C , v*.li *631 As 4587 4632 AAss.458888- (c) 44663333" Ae^SSG^.'r iVB i<F> ' " " --Cm " /W * ^ ' " ,,, ' HtItI 4466226 412^18';... C . *1; A ~ A T (C) (F)^ ;v F,C . A A B * S n Tusinp;`'l73"of r-P.v'-'* ' .V-^rt.-A .ta^i - 'fr. -:v^P we:*J- t -v ^ ? k# 1m8o9*5, o2//3*, of - '2031'i - ^ `` *v "" 4i V*t1'.'' \4 tV "" "J''i'iX - sir.? /' - : .7.*. Iv.-' V'.'.' F . ,4629's^burV'rC-^i'`a' ,;1 "-'A*;.*'r*yB .- (c) (?) a?.'. -v ***... . . '. . >./ * '. >.V-tic.-;-;! Ltix XU ' *." . '/*. ' . . -F y' . '. XrLtTeahui ',A6j3.,5-^18^.<7ivitjl^>r3^;`no.v.:4i:<!^'3'-.''d' (-fedpt --efe/pdae--'* / Fl.w'ida.' $i?-ahb, f ' :V: ".',V ", : /'^' v'.//5'.; Mvi i' ` ' 1. H' .r fi/- J `A*i` - ' ' v/ ."cv--- v ^ *-.`(1 ; ' - * Y:-'. ' A S . Slight ' ;-T i> Very,; E . E*cdllent A- C -*' Considsrable . - a v Baa :*t "'v.-: f. ' fi yGoode. - . FFair ?. n Pfor ' ( - ) x. ;Ieas than . .V '; f. m - mioroseopio. I $ 0007-SWP-044703 0007-SWP-000114073 Supplementary Observations ' '. ' , 7 V .. A number of comments, difficult to place prominently in the General Statement and in thp Summary of Results, should he stated.-' First, the Florida exposures at three years did not show, in general,' . - enough extremes .of failure to Justify final conclusions. Therefore, trie Florida panels will be exposed at least another year and the Chicago and Coffeyville panels several more years, and special studies will continue. ' r . < The general pattern of failure for both co-fumed and:..: mechanically mixed leaded sines seems to be that of cracking. Most of ' * I*... the.checking observed is of .two-types: .(a) microsoopic, which will probably develop into cracking, perhaps even before it becomes visible to .the.unaided..eye, \tmd_ (b) . visible defects which look like :cheoking. 'but .which on .olose examination are seen .to be either short cracks or checks .. . ~."r \i. which nro apparently expanding and deepening to;form cracks.' ?;i: . little mention of chalking is necessary .now. ; :Gn all the,.;._ : Rx 471 ;typo paints ai. Florida it is very heavy, at Chioago modoratb and the-gonercl lovol is lqwor._y,St. Josoph .sino J.oxido.and Rational .dpioulc.r ' ' ' " ' * 'V -.i - ' .snlfato. -aro; assooiatod with pxoossivo ohalking, whilo ttio 1895 typo tint . 'fonnuln, ' in gonoral, has[ not oxooodod (except on-somo of tho Florida panol'.) the '"considerable", level. i ;:; v. ;.v; ;. fr-v ' ;>. -v/-, ' *c' 7, : < .. The. Coffoyvillo panels,' ii) generalore obviously olonnost, A;.-:- VWV r . ' 7. . -v... Tho difforoneo, in .this rospoot, as oemparod to Chicago is very striking, ; ' " -. '" ` V ' . . A numbor of spoeinl materials and formulations roquiro * somo spooial mention. For instance, tho use of 5% of lend titnnato in* tho 0007-SWP-044704 N;\ J>..v.v: ' -ie-: . ' ' , Rx 471 co-fumod formula sosms to result in unusually good durability, and apponrnnco at all throo locations, Tho Eaglo-Piohor 30/70 formula tions, with tho hottor zinc oxidos,.aro abovo avorago in both durability and nppoaranoo in both whites and tints at this etago. This is tho only -/ i' ! N , '* group, npparontly, with a tondoncy to chock rathor.thnn crack# St, Josoph. zinc oxido, condomnod as rosponsiblo for serious early oracking in tho Hx 471 formulations, shows up quito favorably in durability in... tho tints,. It is also'quito satisfactory, in appoaranea. characteristics now, although not so.'good at contain oarlior .stages,' -Rational aoioular basioj load, sulfato,: also notnbly 'poor in tho tAitos,; looks 'good as to . color-rotontion in Sx 375. and is up to tho .avorago,in durability, At . Chicago, it. appears jbhat this is. duo to .a. rpthw slow chalking rate, plus tho.fact that the.,chalk Conned is not .very adheront..,, This condition. is - also generally truo of .St, Josoph sine oxide and is quite difforont from M sbrias.aay ohango greatly.in a'ifow months: whdroas the Florida ond ' v '7-\ 'Vit; i1'-- ';; v;yiy-l ;`1 i .. .. probably-.the,.CoffSr^villo. ponols. ha^b passed tho'[ stago' of major ;ohanges ''in: dirt ,W fading..V.v^ ./ > '' - . f. .r ,A ' . - . -T April 25, 1944 J* V Chapin 0007-SWP-044705 0007-SWP-000114075