Document 2LLLxNXGMwzmM6w0JEEgdRYR

E. I. DU PONT DE NEMOURS & COMPANY KREBS PIGMENTS DEPARTMENT 256 YANPERPOOl STREET NEWARK, NEW JERSEY Serial Ho. KN-51-23 Copy No. i Numerical File NEWARK PLANT PIGMENT COLOR RESEARCH REPORT Final Report (Semi-Works) CYP-646-D. BARIUM ROSINAIE LAKE OF GREEN-GOLD Period Covered SEPTEMBER 1950 - JANUARY 1951. FILE: *86-1.43. PATE: 4/24/51 NJ 9747 DUP050068511 Serial So. KN-51-23 Copy So. 1 Copy to* 1 - Sumerleal Film 2 - Research Off ice "(221,41) - > ' 3 - Library File 4221,41). u 4 - H. Arnoul - Plant Files 5 - W. F. Spemgeman/J. B. Callaway/ P.J.Monahan 6 - J. S. Tully/A. Siegel/Library 7 * W. 0* Struve/P. J. Monahan 8.- Extra NEWARK PLANT PIGMENT COLOR RESEARCH REPORT Final Report (Semi-Works) CTP-646-D. BARIUM ROSINATE LAKE OF SEPTEMBER 1950 to JANDART 1951. CHARGE* 11(00)-26-427 GOLD DATE SUBMITTED* 3/28/51 DATE ISSUED* 4/24/51 DUP050068512 in t r o d u c t io n * This report covers the formulation and semi-works manufacture of a Plane fixe extended barium rosinate lake of XT-562-D. 1. A Plane fixe extended barium rosinate lake of YT-562-D, coded CYP-646-D, has been formulated, and manufaetured in the semi-works. 2. The strength of the lake corresponds to its toner content. 3. CYP-646-D is tinctorlally acceptable* mum* K-2410, a laboratory formula, was recoded BYP-646-D and made In the semi-works as lot 1297* by precipitation of barium rosinate in the presence of YT-562-D slurry obtained from a plant coupling. Costs on the nB" formula were considered too high for a lake of this type, and an extended counterpart, containing 17$ blanc fixe, was decided upon* This was formulated as CYP-646-D and made in the semi works at an 80 pound batch size, as lot 1339* Evaluations by rabout are as follows* Lot 1339 vs XT-562-B, SD-87199* MB? Btr. Tint It. int wk.& lnt. 160=100 ws dull Lot 1339 vs BYP-646-D, lot 1297* IQ. Btr. IM It* s.lt.& int<. s.wk,ws lnt.. 120=100 we dull Lot 1297 is like lot 1339 except It Is not extended with blanc fixe* The strengths shown are in agreement with the toner content of the respective lakes* There is no gain or loss of toner strength on laking. DUP050068513 *2 DSS-51-23 j. Soraulas: K-2410, BYP-646-D ,, CYP-646-D Letters* A.A.Brizzolara to J.B.Callaway, 10/17/50 A.A|Brlzzolara to J.B.Callaway. 10/26/50 J.B.Callaway to D.B.Killian, 11/7/50 A.A.Brizzolara to J.B.Callaway, 12/1/50 A.A.Brizzolara to J.B.Callaway, 1/17/51 Bales Service Report 56-6 DUP050068514