Document daNz9Db9N0jpwwjqxY94j1GzG

E. I. DU PONT DE NEMOURS & COMPANY PIGMENTS DEPARTMENT 256 VANDERPOOL STREET NEWARK, NEW JERSEY Copy No. 1 LIBRARY COPY NEWARK PLANT PIGMENT COLOR RESEARCH REPORT RED SHADE SOLUBLE BLUE Period Covered: June 4-5 ~ January 46. FILE: DATE: 7/U/46 N41550 Serial No. KH-46-35 Copy Ho. 1 Copy tot 1 * Nvunerioal File 2 - Research Office (213) 3 Library File (213) 4 - #10 Balding File 5 - In$>erial Chemical industries, Ltd. 4. * j- * * h 8 V. F. Spengenan NEWARK PLAN? PIGMENT COLOR RESEARCH REPORT Final Report Titlel BED SHADE SOLUBLE BLUB Period Covered* June 45 ** January 44. sonixms Bit M. S. Taber APPROVED BY * J. 0. Ison '/if*4 DATE SUBMITTED* 7/1/44 BATS ISSUED t 7/11/46 N41550.01 DUP050150480 mmmsmm This report discusses laboratory work toward development of a red shade soluble blue from tensing blue press sake* A series of red shade soluble blues was made by treating experimental toning blue press cake with varying amounts of IPS and H3SO4, The products varied in eolubllity (W 231*1)) these psptisod with any amount from 23% (dry pigment weight) down to 4*$ TPS were very soluble, those peptised with less than 48$# were poorly soluble* Pigment strength was net affected by dsereastng the amount of TPS to as low as 4*8Ji* Every sxpsrlmesial eauple tooted by heated dyeing evaluation was rod and about 5$ weak vs PB&> (2 parts * 1 part FB6D), and was green in tint and vary strong versus the greenest of the Halopoint Blue BOM's (2 parts 4#6 parts Halopoat Blue BOM, s# 5*M) He further study is planned for the present* wamm H*B* 1105*^9, and 79* Monthly Stanary, Service laboratories, January, 1944* DUP050150481