Document 6REZdLNDmrn06jJdngj363oGd

E. I. DU PONT DE NEMOURS & COMPANY KREBS PIGMENTS DEPARTMENT 256 YANDERPOOL STREET NEWARK. NEW JERSEY NEWARK PLANT PIGMENT COLOR RESEARCH REPORT SEMI-WORKS DEVELOPMENT OF K-2A13 5-Nitro-2-Amino-Anlsole t N-ASD Period Covered: November 1946 to May 1947. FILE: DATE: 1/3/50 NJ0Z7B N42196 V'1 . Co j q t toi ,,Btaaerleal HI* * Rotwaroh 0flc (881) # Mbrajy FlXe (22l) - t Chalttjakl Plant Filwi *. P. Spcngwaan * D, B. Killian Ext** Sarlal So. KN-49*12 Oo r t Ho x S I tO KIMARK PLANT PHOTT COLOR RESEARCH REPORT FINAL REPORT mm $mbmm tmmmm o f K-zm 5*mro>2Anino^niocao * N-ASD ^ PERIOD COVERED! Kovwaber 1946 to Kay %%% CHARCB3* A-E-4Q nmsmsmm* 1/27/49 DAIS ISSUED* 1/3/50 DUP050067177 Msauaaa Staring tho course of the study on th reactivity of RT-553W3 <5 nitro**2* aalno-anisdle -* NASD) several variables triad resulted in a proeeas which would cave about 20 oonts par pound on ingredient coats* This econoey formula was coded $*413 and given a esi*vorke trial* Two identical semi-works runs vara and* and found to bo close tinctorially ' although lighter than RT-553.-D. However, sens difficulty was encountered in ssaifttiina in pH of coupling which would require further study* The project was obanddnadti temporarily as all the blending study with RT-57X-D had been carried out with MT5$3*D and the tinctorial property established in tbs trade* nmma, nT<^m,qTr CMpeSe^SSS^^ The first batch (lot. 6999) coupled with a ouch higher pli then was desired while in the second botch (lot 9060) the pi! of coupling was on the low cldc* Dus to the eliadnation of the sodium bicarbonate and consequent buffering notion the pH is eery sensitive* Generally speaking* higher yields wars realised on tho K-2U3 in addition to the savings* Also a slight improvement in lightfastness was noticed* this report is in reality a progress rapoet as acre work would have to be done before dent oroduotioc could bo on thia cods* 1197 1245 1245 47 Evaluation of lot 6999 lot 9000 12 Blend of K-2413 tod K-23G4 (K-2433) 15 PPrreeppaarraattioionn ooff rreeppllaaceeeamesnntt ffoorrKK-2-24433, 3 0SH49-i2 Seal-Works Development of K<*2433 DUP050067178