Document bBVjEqxJjQLJvY5obDYn8Bygo

E. I. DU PONT DE NEMOURS & COMPANY KREBS PIGMENTS DEPARTMENT 256 VANDERPOQL STREET NEWARK. NEW JERSEY Serial No. KN-49-9 Copy No. i 1: K. V NEWARK PLANT PICMENT COLOR RESEARCH REPORT RT-571-D, SEMI-WORKS 2EVEL0FMENT 5-NITR0-2-AMINO-ANISOLE * LITH0S0I, ACID BCW, MANGANESE Period Covered; August 1946 - May 1948* r NJfa7B FILE; DATE; 11/14/49 N42193 Qatar toi H - Huwrical Fil* to - B*arch Offic* _ * Libraiy Pil* (222.2) * V, Obalupflkl - mmt PilM * b* smST * BXSVttM*-.-A --fc- S*rm KO. 4W Cflijr Ho* x HEWABK KUS8T fWSS^f CdOR ftTffilARQfl BBPOKf Final Eaport mitt m5flw>* mm^mm mmmm vParted Cwwwu Augu*fc 1%6 to Hay 1943. Charga* A-HC.10O mm m$ mmm suanrmj b?i a, d, touts APPEOVJS) 8f 1 A. A. 0A*ESISI5i 1/27/49 DATS ISSOSD* U/14/49 DUP050067166 _ % . 8J*55W W (Ml, M w the laboratory for iitudy la an attempt to ellainate the reactivity. 2fc tho ccuroo of tho study, a additive (RT..571-D, l^tro^adaoNtoiiO^ BCR, naagaaeao) mo developed which, whoa blended lit 10* amounts with 90 part* of RT-551-D (A) . greatly reduced tho reactivity. After a laboratory otudy an RT<*571*D, o ooafM^A trial mo Mrronted* 1, Twenty runs on RT-571-D ware made jn tho o*al*weric covering fr* 35 pounds to 160 pd batch sizes. 2. A aatiafaotory 2X-57X-0 foraula mo developed in suitable.for plant Moufaeturo. This differed from the (a) A alight increase in caustic soda in the coupling (0*3 nd) to promt tho foraaticn of a brownish typo pigmtt (b) the development cycle mo reduced ftm a 15 agnates boll to a dovelopBent at 150*F. for $ minutes. Over dovelopausat causes tho Slurry to tom light rod* ' Six seal-works rtmo voro node increaaing tho botch sieo Iron 35 pound* to 160 pounds with satisfactory result* Mon blends* with BT-588-B (K-2292). The following run turned light rod while pressing and booano tho first ``flop1* batah ^made, (A flop" run la one in Mich tho color io converted froa a my dark, blue, weak product to a light# rod strong typo which io ineffective in reducing Mo reactivity). After several rune were node in tho laboratory, tho study mo rotoiMd . to the eeoiwwGrks with a modified foratla in which tho boiling period was cut to 5 oinutes followed by flooding. Thisproduced a satisfactory process (lot $&?)* . ' v A short variable study mo ra&de on tho ascent of caustic soda in tho . ct<wrt4wB> the amount oweeaiiawhMRpa' .snoowooaomHpeg^ .openes ewwpweesne.ee o*3 aal*esr ^^oosio* nor id wused the^eeie^w croduct to ^belight and brown in shade which Is not so effective in radusing tho reactivity, l&rasreasing it by 0.3 & gave a product equal to jrovicus standard but slightly ' . ' superior in effectiveness with ET-588-D. this latter procedure (lot 9324) was " oie^gii^Mdl ^tonwo^eWr*iOi t TWb plant batches wore nods on tho lot 9324 fcronla* Tho first Mi satisfactoiy but Mo second was a "flop* batch. The otudjr mo returned to both the laboratory and the ami-vorko for devolopaont ^wor^k*. Throo .ruao h o ps node .in tho Srral-works as fatlowsi (1) undeveloped, (2) develop#! *t 13*F. (70*c) and (3) developed at 1S4*F, . ouanched to I|flF* All throe were satisfactory tinotcrially end in effectiveness Mon blended with RT-588-D. However, the pressing t3ja#(10-l/2 hour# for undeveloped sag 4 hour# each for both developments) indicate that a development temperature of at least l5g*F, io necessary (lot 9421). Tho 158*F davslojnumt mo adopted and too check runs wore nade. DUP05Q067167 #2* wai-Morka lot* mm t**t*d in blond* with B$56dD (K-2292) in th iolloiiing *s^oi*iBwnt*i 8H-49-8 Inbopetozy DovftLopnmt of E2W57W3 D38-49-10 SomjUWork 23y*l^m(mt of BT-571*B l T DUP050067168