Document YGKGKJM4Np6B2KXOo2026Xv2O

E. I. DU PONT DE NEMOURS & COMPANY KREBS PIGMENTS DEPARTMENT 256 VANDERPOOL STREET NEWARK, NEW JERSEY^ Stria! No. Copy No. 1# Numerical FI J C /r-s h s ~ Period Covered NEWARK PLANT PIGMENT COLOR RESEARCH Final Report REPORT CHROKE GREENS MANtFAC7TO5 "BY' BflY BlEHDINQ AUGUST 1946 - ISAY 1949 \ FILE: DATE: 814 Jen. 16, 1951 !^ n j mr Copy t* #1 * Numerical Pile 2 Research OiYlc* (214) 9 - Library Pil (214) 4 * V, Chfelupaki - Plant Pile 5 - E*fera e * Serial Ho, Copy SQf 1, Numerical Pile NBKftNK ftUJtSf PICKERS COLOR RESEARCH REPORT Pinal Bspcrt CHROME C asimia AUOUS5P 1044 - HAT 1049 Gfa&rgost A-IO-4 BON"4 SUBMITTED BY: j/ 0. H0MI3QN 4 APPROVED BY * '/'>/rf BASE SUBMISTED* Jan* 11, 1061 BASE ISSUED* Jan, 16, 2061 DUP050068583 3 urn* sis report summarises a study directed toward the remfaetuTe of the medium end debtor msaton members of the G~3S0B and G-604-D Ghpom Green lima by dry blending of appropriate bln and yellow oopponent pigeenfes SUMMARY: &a study* proijptad by forecast of attractive savings and initially promising technical perfozmmP was beset by massy delays caused by mechanical factors and complicated by quality aspects and shifting goals*) It was terminated because of drastic shrlielmg of forecast savings as the result both of redaction in sales voluma and increase in complexity of the dry blending proses, At the tins of discontinuance, the process appeared to be technically sounds subject however to prob&blo continuance of high equipment amimtemsac costs. Dating th curse of the study more than S006000 lbs of dry blended greens ware produced eowBereially and- sold* Daring a market period when customer complainta were Busses?us* no justifiable ce* plaints were ultimately attributable to th dry-blending process per soa Extensive Sales Service evaluation in five different vehicles subsequently confirmed th satisfaetcry quality of dry blended pro-:-duets (although contrary conclusions were reported 'as the result of erroneous analysis of the data). As a by-product of th program, m iron blue of superior color and texture, B-300-D, was developed, standardised, and released for sale Experimental attempts to substitute a continuous blending process, using a Sprout Waldron mill, for the Muerxh mixer bmteh blending process failed beoauso of unsatisfactory dry appearance of the experimental products, a&jawmau She dry blending process for tMtindteetuve of oteoms .greens: does not appear to be patentable. Since the dry blending process tm mmfactor of chrome greens, as finally developed, offers little promise of significant saving in smaaifsobering east compared to the conventional' slurry blending process, no further study appears desirable at the present time, feCtmieal and economic suamries of this program iiim are filed in DSB Sl-2 should be reviewed in ease future conditions warrant reconsideration of the desirability of prosesling with the study. DUP050068584 -8* wsmmm&t A complete tile of pertinent correspondence is filed la 2?hra letters which provide adequate technical and eeoaemie mxeemry of the study, and are filed in the elwm reference, ares D B Killian to 3m Booge, May 19, 1949, C, D, Atkinson to B* A. Kaiser, April 29, 1949, G. loia to 3m H Bailey, 24* 1949, * mag \ "S DUP050068585