Document 8565aybagaDodGqb5LdqDXVG5
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MC-6-73
September 17, 1973
DiSTPIbJnON
S, -,'iStewart* Pigm,, CAR,/ C.E File
1W. Riches, Riga., C.H.
.,G, Normaldj Pigm.(3.R.
L, A. Sehlapfer, Riga C,R,
W, ,S. Struve, Fig., Newark K, Oedd,- ?igm., Newark 3.*. Pi.^ggrk. E, S. Sdelman, Pigm*, C.R E- E, JaYfe,' Pigra,, Newark
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mo n a ^c r &e 0 b l u e g ,
J. 11. Alpten,. Riga., Wilm* A- IF. Lewis, plgrn,,, Ju.'Nv Aing. Riga.,' Wtlm. ' J, McAuilken, Riga., ITilm, a, S, Emuerb, Riga., Nila, K. Hat:rlei, Riga., Newark uk W. Mi-alien, -Riga., Newport E, *r Cillow, Riga,, Newport B, H 'Hc-tse3-> Riga, > Newport
sr ci'ispHERiEoas in k
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As written in the first repsfrt (4/30/73; we found experimental ssiii-vrorkt: Ki?--476--D SW-OO^S more dispersible than Giba-GeigyEg LGLD in Cowles dispersibility in a heatset ink, l-his report covers Cowles
dispersibility of slant produced BT-4zaE., lab finished JS?~476~-p samples and experimental samples subB&tted^suKen^-tT:*y, -Efittagfc.
CONCEITS ION a SUMMARY:
YD11T"476'B production Is not satisfactory 0 owl as dispersible' materiial. It is cLnYerior in dispersibility to sewi-SJO^ks BT'-^-To-B and IG-LD* Ftv.a production lots tested all had considerable tailings, soma separation and .poor texture after one canning pass' (medium tight setting) over the three-
roll miil~ ~~~
Lab finished samples(l934-53A and 1934-53^ re -Cowles dispersible and very -very slightly superior -to 1C-1-S--in -diggers ion * hese samples are 1st extraction, of Newport presse&ke XOP-428 later sent to Newark and finished as lot 42229, 1934-53A represents .five hour milling which is considered satisfactory milling time; tiactorielly I934-.53& is closer to S .! ?, 3T-4-76-D, Six hour milling, however, gives darker mas stone and additional tinting strength and should be under future consideration.
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I-AB WORN BY: G, W. Rodgers
SIGNED__4I: J- A, MACNIENICZ/gs Os
lUPOSOI09360
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LG:.'J can 1 d lone::-?-h .satlstnot..yx ".; ; l'.;- a chart eer:n.;.=''n pis\:v/ec the tUye.e-;-.r.oXl 'nil".: i : is, nob on the'dowles* By this test 3T-476--3 .S7-99476' las finished saraples 1924-53B is equal X) L0&1? in iexrnru
and one he or3--dl.sogr.sed -no inferior but
Experimental samples submitted by Ken ..n-rizr,---. .`.we net satisfactory dispersion quality*
a will hold this work request open be test future plant BT-^To-D production and laboratory flnsihed s&r.u>3es.
EXPEHTlgB^TAL DETAILS: *
Pigments Tested
-
,
j .<
* See Table XXI for listing
Ink Preparation
Cowles-dispersed heatset ink made per 2E-23C2, LGXD was ground at -20. 66$ figment and aoat lT-4r6-B
samplas were ground at 2?.$9$ pigtgent (considered (! optininm pigment loading).
Change can pre-mix test - Pigaiaats were ground ,29*66$ one canning (medium tight mill setting) pass over the lalll* Tine miXXbasK was ore mixed on the Kentchange can mixer for ten, mijiutss. prior to passing over' the mill*
BEPERBHCES;
SC-S--73
117-30-73
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DUP050109361
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B1-A76--x? SJf,oo4?D Bj-^73-p ss-96356 193&-53-B
V::::/:;-;.: . -3 \ 2^3) w 10 2
(1) After the pigment is pre-rrdxed At Is- given one medium''tight puss over the three--roll rail!.
(2) 'Minx Tejrturej D~IO scale. 7. = perfect
(3) Average of two tests
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'MBLB IX;. rnSfCTOXIAZ COiXfiKtTSCHS '"XKTI^eadings 'TerlfuT jy?my
2C-pt...c;J3i (5 hr- grind)
l-^226S \6 hr. grind)
Maestone vvs It.., bronzy
* dark; less bronzy
Sint approx. 2.55S?. strong
JAK:;gs 3/17/7.3
2TC-6-73
DUP050109362