Document 8VNY93gGZN4KxVmJQMwyVbz4Z

E. I. DU PONT DE NEMOURS & COMPANY KREBS PIGMENTS DEPARTMENT 256 YANDERPOOL STREET NEWARK. NEW JERSEY Serial No. KN-46-63 Copy No. 1 I NEWARK PLANT PIGMENT COLOR RESEARCH REPORT Y-547-D; BATCH PROCESS* SEMI-WORKS AND PLANT MANUFACTURE OF IMPROVED MEDIUM YELLOW, K-1958. Period Covered: August 1, 1945 " April 5* 1946, FILE: DATE: 11/27/46 NieXTB N39970 Copy to* #1 - Numerical File 2 - Research Offlee (211.1) 3 * Library file (211.1) 4 - #10 Building File 5 - V. Chalupski - Plant Files 6 ~ V. F. Spengaman Serial No. Copy No* KN-46-63 i NEWARK PLANT PIGMENT COLOR RESEARCH REPORT Final Report Tittti Y-547-Di Batch Process S*mi-ork8 and Plant Manufacture of Improved Medium Yellow, K1958. Period Foveredi 8/l/45 - 4/5/46 N39970.01 DUP050150169 umimm During this period a series of semi-works batches of improved medium yellow (f-5*7* K-1958) were made and shipped to a selected customer (Arco) Based on semi-works experience, batch-process production of -5^7*0 was than triad in the plant* gyppT m> vmmism Although satisfactory material was made in the seal-works, it could not be duplicated in the plant* After tfen unsuccessful attests, plant production was discontinued in favor of manufacture by a continuous process* The letter program, which was successful* has been reported In KN-46-22* ^wmmnkMaim DSM-46-20 contains all the experimental details pertinent to this problem* DUP050150170