Document mBjmzVmYJXnX7NxY2Dv41Qd2O

E. I. DU PONT DE NEMOURS & COMPANY KREBS PIGMENTS DEPARTMENT 256 VANDERPOOL STREET NEWARK. NEW JERSEY <{ Serial Ne. KN48*39 Copy No. X Numerical File NEWARK PLANT PIGMENT COLOR RESEARCH REPORT Final Report "WATCHNM RED LAKE, Rft-417-I> mNT STANDARDIZATION OF A 10% STRONGER PRODUCT Period Covered: FEBRUARY - AUGUST, 194&, FILE: DATE: 222c24 1/5/49 Njcant N42185 Copy toi #1 - Numerical File 3 - Research Office (222.24) 3 - Library File (222.24) 4 * #10 Building File % - ? Chalupski, Plant Files 6 V. F. Spengeaan, Newark 7 * Extra Serial No. KN-48-39 Copy No. i NEWARK FLANW PIGMENT COLON RESEARCH REPORT Final Report wWAfCH0HGM RED LASS. HM-417-D PLANT STANDARDIZATION OF X 10# STRONGER PRODUCT. FEBRUARY - AUGUST, 1940. CHARGE* 1100-26-010 (CC-600-010) SUBMITTED BY* APPROVED BY* E.J Mess J. DATE SUBMITTED* 12/30/4$ DATE ISSUED* 1/5/49 .. `\? DUP050067121 STIOMi The appearance on the market of a Red LB lake similar to RM-417-D hut 10`S stronger than the then current standard* lot 48150, made it necessary to adjust the tinting strength of RM-417-D upward to maintain our competitive position in this field. Upon receipt of the Rales request to restandardise RM-417-D at a 10% higher strength level a number of hatches were made decreasing the extender amounts (blane fixe and alumina hydrate) by approximately One of these hatches, lot 54116, was selected as being of the tinctorial quality normally being obtained during this period and of the desired strength end was set up as the new strong RM-417-D standard* A comparison of lot 54116 versus the previous standard follows* Lot 54116 vs lot 48150* s*light - 3.yellow - %0% strong vs.yellow, intense* Lot 54116 Vs lot 481501 8-105J strong - yellow, intense* Migration OK. A new standard formula, RM-417-D(B), based on the revised process was Issued in July, 1948. A cost disadvantage of approximately 2-1/2 cents per pound resulted from the necessary extender decrease* She Production Division accepted supervision of manufacture on the new strong BH-417-D formula in August, 1948* mmmmt In October, 1947, the Sales Division requested that the strength of wWatchung" Red Lake, RM-417-D, be increased to equal that of the competitive product, federal's Harrison Red #3005* A rubout comparison of the RH-417-D standard, lot 48150 versus a sample of the competitive material, follows* Lot 4815O vs C #49603* dark - vs blue - wk (110100)- ws blue* In order to save standardization costs it was suggested that some consideration be given to lowering the selling price of regular RM-417-D but this ires rejected by Sales* DUP050067122 After xome discussion it was decided that the only practical method for obtaining the desired strength increase was fey catting the Plane fixe and alumina hydrate extenders fey 16$ which was equivalent to increasing the toner content from 41.6$f to 44.6^. This entails a coat penalty of about 2-1/2 cents per pound. In February, 1940, plant manufacture was started on this revised formula* A aeries of seven batches were made during the period February-June, 1948. Has stone varied ovar a fairly wide range and It was finally decided to submit a single batch, lot 54110 as the proposed standard. Lot 54116 was submitted for evaluation in May, 1940} results of Mas tests wars reported in June, 1940 and the lot set up as the RM-417-D standard in July, 1940. At the same time a new standard formula based on the lot 54116 process was Issued as PM-417-DC8). A number of changes other than the extender decrease were Incorporated In the new formula in line with plant procedures in use subsequent to the issuing of the RM-417-DCA) formulation. HM-417-D(B) differs from HM-417-0U) as followss 1. The process has been established on a stepwise basis. 2. The batch else has been increased approximately 23$. 3. The extender ingredients (alumina hydrate and blanc fixe) hava been cut approximately 16$. 4. The Bed 2B acid consumption par batch has been decreased % as a result of the improved accuracy of the suppliers (Orchem) analysis. 5* The p8 after heat development is adjusted to 8,2-8,7 instead of 7.5-8.0 to obtain a closer approximation to the standard masstone. The Production Division accepted supervision of HM-417-D(B) manufacture in August, 1948. aiiLMimi There is no patent restriction in the manufacture of Bed SB colors. Xt in not believed that this study has resulted in any patentable developments. DUP050067123 3 m.oasABVt BM-417-D A 44-1/2JJ extens ion of RT-428-D on an equal part mixture of alumina hydrate and blanc fixe* BT-429-P The calcium-strontium salt of the coupling of Red 2B acid, diazo and beta hydroxy naphthoic acid* had 2B Acid - Ortho-chlor-meta-toluidine para-sUlfonic acid* Watchung Red colors - All Calcium Bed 2B dyestuff pigments* DSN-48-38. DUP050067124