Document 2qGYDyNqoD9kYxB8Jdq0jb7Op

Copy No. 1 LidR/E. I. DU PONT DE NEMOURS & COMPANY H-'V ~ PIGMENTS DEPARTMENT VvX* jf 256 VANDERPOOL STREET NEWARK, NEW JERSEY 2 iii/ ,. NEWARK PLANT PIGMENT COLOR RESEARCH REPORT HIGH-STRENGTH RT-357-D PROCESS K-222?* SEMI-WORKS YIELD STUDY. Period Covered < April 1946. FILE! DATE, 7/11/46 N40003 Serial No. KN-46-40 Copy Ho* i Copy tot #1 * Numerical rile 2 - Reaearoh Offlee (223*21) 3 - Uitrary File (223*21) 4 - #10 Building File 5 Xaperial Chemical Industrie*# ltd* ^ ft It ft ft m ft ft ft ft 8 - W* F. Spontanea NEWARK PLANT PIGMENT COLOR RESEARCH REPORT ?.ragfv.ee Final Report Titlel mOH-BTRENffTH RT-357-D PROCESS K-2229t SBMI-tfQRKS HELD STUDY. Period Covered! April 1948* SUBMITTED BYs M* 0* Taber APPROVED BY t d. son DATE SUBMITTED* 7/3/46 DATE ISSUED 1 7/11/46 N40003.01 DUP050150464 imRODOOTION la tb costing of K-2229, and extra strong RT-357-D}. it was discovered that the laboratory goal yield oa the formula wae appreciably lover than that for the regular RT-357-D, K-2172 formula, making its eost per pound relatively higher, X eemi-worke yield study on K-222? seemed advisable. In addition the Research Laboratory decided to run a eeaparative goal yield study of the two K formula. K-2229 and K-2172* mmLm MBawaa, The average "goal" yield for K-2229 obtained from three semi-works batches was 76*2# oa a 0.286 x K-2229 batch slse ohcoking exactly the laboratory goal yield* The laboratory reported that attenpt* to equal the goal yield of K-2172 using the presently eupplied dye lots were unsuccessful, yields obtained being of the same order as these for K-2229* tw msm Three semi-works batches were made with care to ensure maximum yield* Details are tabulated belows Batah 8710 87U 8712 Dve Let 313 31? 3U Lump Yield (lbs.) 76*0 ?5*5 77.0 (lbs.) 76.0 T5.0 76*0 MgtftjraJMSga Light, equal, 10% itrong Equal, equal, 10% strong Equal, equal, 10% strong ISIIMIB& DSN 46-13 Batches 8710, 8711, 8712* KN-46-9* Previous ssmi-werks study* DUP050150465