Document omkb0zrD7n156beRmwN3bYYw7

E. I. DU PONT DE NEMOURS & COMPANY PIGMENTS DEPARTMENT 256 VANDERPOOL STREET NEWARK, NEW JERSEY Copy No. 1 A '/* 1' # 6 ' * f 3 NEWARK PLANT PIGMENT COLOR RESEARCH REPORT ! RE-519-D and RE-325-Ds SICK LIST STUDY Period Covered: March - July, 1946 FILE: DATE: 8/20/46 N40000 >V3. >f 8*rial So, HM643 i Copy #1 * Hwamrleal Hit 2 - Roooarofa omc* (223*21) 3 Library ru (223*21) 4 - #10 Buildisg m $*& t 6| * Sapor!*! Ob*esiMl XaSHCtrie#* Ltd* 8 9 * V* F. SpOBgttBdft 10 -JB*tra Husp^aif o t .*p PISiiEHT COLOR RESEARCH REPORT Prcgrooo Report Title* SI*ja?-0 and RE-32MDi SICE U6T WSW* Period Covered* Ifereb * July, 1946 SOBMSTSKD IJft H. 8* Tabor ,/ mwm by 1 j . 0. , ms s summit 7/3/46 MSS I8BWD1 8/20/46 N40000.01 DUP050150451 These products are extended P.T.A* pigments of the following oompositionsi SSUS pm toner of Rhodaotoe bODH Barytes Alumina Hydrate (anhyd.) China Clay Organic Agent Bladen latkr KBLtB 70.7 Pleat batches of BB-519-D have been very weak to tint, eves with appreciable outs to extender. Here recently the similar lake. KS-325-B* bee been similarly substandard to quality* A slob list study east therefore, requested, and van undertaken in the semi-works. immi m vmvmm* r b -s io -p There la no apparent correlation between tka strength (by brueheut er rabout) of the lake and the strength of its toner. Bar is there correlation between strength ef the lake by brushout and strength by rubout. Better dry grinding was found to tooroooo tho atrength ef both RS~519*B end 81-325- especially tho former. Addition ef & ef a treating agent, Blaneol (or Leuhanol), in the grind gave an additional "pick-up" to atrength for these colors. Greatest strengths, however, were gained by pulp mining toner with extender end Blaneol, using the Abbe Leaart mixer.. 81-tgS-B Substandard HB-325-D wee raground with end without Blaneol treatment and results were obtained similar to those for KB-5198. Regrlnding along brought atrength up about IQjC, while Blaneol goto a product another 10-lj$ stronger*. Preliminary plant and Semi-works regrinding experiments confirm rooulto of rogrtodtog MMM. Stvti.rfJmn flwUli, five toner batches ef RT-35T-B (1*2172, except struok at 170*f.) were made to the aemtoworke. my were all strong by rubout vt Rf-329-2 and about equal in strength (5)0 to RT-357-D. Lakes from the above toners, made following exactly the HI-519-D formula, were ell weak, though net ne weak as recent plant material. Strengths ef the lakes, whether by rubout er by brueheut, shewed ne correlation with the toner strengths. DUP050150452 -2- Staadard let 3582, RS-519- ie the laky ef a tenor made rather differently fro X-2172 - the molybdate * tungstate ratio le much lover* volumes are higher (32), and the toner ie streak at a boil. Exoept for volume differences* the lakiag procedure for the eld and new lakes are the same* A laboratory series* H*B. 1G67#*5 eae made semperlag lake from K-2172 toner with lake from tenor made ns for lot 3582* *he toners shewed the expected strength differences! -2172* struck at 170*7* was stash stronger than pigment of the esae formula struck at ISO* or at a boil* and also was stronger than pigment mads as for let 3582* The lakes by rubeut shewed a traverse strength relationship, the let 3582 type lake being strongest, the K-21T2 type struck at n boll also being stronger versus the K2172 type struck at 170*F. Breakout* of the lakes* however, la&leated substantially equal strengths* from one left of toner both R*-519* (let 8700) and BS-325-B (lot 8701) were and#. H8-519-D in extended with baryte* end China Clay, BK-325-D with barytas and alumina hydrate* Let 8700 was weak versus both EE-519-D and let 8701* Let 8701 was vary slightly stronger then it e standard, 8B-32-D. (Standard RE-519-D is etronger than standard RE-32J-D) . Comparison of the pulps of lots 8700 and 8701 indicated that in palp fans 87QO ie the stronger* These observations weald indicate that the hydrate like ie mere easily ground or else disperse* more readily In a easels vehicle than the China Olay lake. gtwfly of Mira,,urmdwrt In the Bl*5190 formula* "Binds** is added to decrease separation of toner and extender during formation of the presses!*. Blaneol serves this purpose equally well when substituted for Bladen end at the same tine results in slightly increased strength* Doubling the amount of either Binds* or Blaneol was of no benefit. Pulp mixing of teacr end extender in the Abbe Lenart. mixer gave pigment equal or stronger than standard* fidJ^i^83aa3:,.L,Siri^ Pigments "dry ground" with $j Blaneol were aueh bettor in strength than untreated pigments. Smeller amounts ef Blaneol did met have nearly aa marked and affeet on strength* Bladen and Compound 56 were ineffective aa grinding agnate* Blaneol* unfortunately* has a marked effaot an masstone* Pigment ground with no little ns 2% Blaneol was dark* dull and yellow la masstone* However* sine* BS-J19-D is seldom need as a masstone color* Blaneol can probably be need without causing caplcistc* Blaneol dose net affeet the light fastness of the pigment* The seat ef BS-519*B and ef Blaneel are about the earn* so that no expense would be incurred Aram lta use* A quantity ef substandard B-J1H was raground with and without Blaneol. Ivon without treating agent n pick-up ins strength ef from 10*2OfL was obtained on reminding hh* color. Regrinding with Blaneel gave a further strength increase ef 1O-20JC. Ssmi-works material is alee Improved by regrlading* but to a lesser extent DUP050150453 than plant substandard stock. This would indicate ttet plant difficulties ray be due larggiy to inadequate grinding* Following tho work oa RK*519*D aalee of substandard 88*325* nr* reground in ib* send.-works with and without $f> Blaneol. Regrinding increased stregnths trm 10-15JC, regrinding with Blaaool increased strengths trm 3*30)t* do in 88*519* *lamol tana an adverse offset on the raosteae of 88*325*, asking It darker, duller and yellower. Unlike KS*519 RB-325- ia ofton mod ladaep tlnto or no nasatone o that Blaneol i not reoemnended. Both the plant and eead-worka rogrouad a portion of a substandard lot* lot 4fiO70 The plant rsgreuad notarial, lot 48365, brushed oat 5*10^ otrongor than standard! tho esai-werks notorial, lot 4834, brushed oat 3*5* aoahar than standard althn# otrongor than lot 480?8* 8670 Toner, K-2178 8671 Tenor ond 88*519* lake 8678 Tenor nwy 8671 8679 Lake of 8678 with double tho aoaal amount of Biadox 8699 Tenor like 8671 8700 HB-519-D lake of 8699 (like 8671) 8701 HB-325-D lake of 6699 8713 Toner like 8671 8714 88*519* lake of 6713 (like $671 but loosely ground, than split into throe parts 8?14 - High speed pulverised without treatnant* - *8715 * * * 8716 " nith A Blaaeel % 8717 - 88*519* lake of 8713 in whisk Blaaool (double aaoant) Is substituted for Blndex. 8834 Boni*vark rogrind of plant let 24197* 8834 " * " * with % Blaneol 8835 *......................................... ......... mnA ftldltidail isii&difo 8839 (pit* 48364) Sod-works regrlad of plant lot 480?8, RT-325- 48365 Float regrlad of lot 48076, 8?*325" 1067*59 1067*60 1067*61 1067*62 88-519* end 88-385* Aron sane toner slurry Aging of tho toner Neutralised we* washed toner slurry for lnkiag* HK-519-D* Xnoroaoo ia anount ef Blades* Substitution of Blaaeel for Bladen* RE-519-D1 Pry grinding with Bindes, Ohon* 56 and Blaaool. Comparison of pulp with dried and pulverising material* 88*519** ry grinding with varying ameuate of Blaneol* DUP050150454 1067-63 H8-519- Fnlp Inking of eead-eerk* tfloor la the Ahhe Lenart. 1067-64 fffl-519-* Regrindlag of pleat euh-etandard arterial with and without Bkwd* 1067-65 HB-519"% Qflflfpdxieea of K-2172 mad let 3582 toner fenmlae* 1067-67 88-325-* Regrindiag of pleat eah-eteadard arterial with llanool. Refereaseet DSK 46-15 B.B. 1067*59-67* DUP050150455