Document B52MLM7GzYav5JO2OoYQG45wE

E. I. DU PONT DE NEMOURS & COMPANY KREBS PIGMENTS DEPARTMENT 256 VANDERPOOL STREET NEWARK. NEW JERSEY Copy No. 1 `.'i NEWARK PLANT PIGMENT COLOR RESEARCH REPORT BARK TOLUIDINE TONER, RT-505-D, K-2240. SEMI-WORKS AND PLANT DEVELOPMENT. Period Covered: June 1945 to April, 1946. FILE: DATE: 10/16/46 NJ6275 N39965 Serial He* XH-46S66 Copy Ho* i Copy tot 1 numerical File 2 - Research Office (221.31) 3 library File (221.31) 4 -JlO Building File 5 . fUChalftpski -Plant Files e Imperial Chemical Industries, ltd. Im m h .e 9 * F. Spengeaaa, Hesurk10 - latra NEWARK PUNT PIGMENT 0010R RESEARCH REPORT Final Report Title* Dark Toluldiae Toner, RT-505-D, K-2240. 8eoi*orke and Plant Development. Period Covered* June 1945 to April, 1946* DATS SUBMITTEDt 10/7/46 DATS ISSUED* 10/16/46 N39965.01 DUP050150151 -1- X A process for Baking a toluldins toner darker ikon RT-505-D staadard was developed in the laboratory and semi-works, to satah Tutorial's "Toluldins Toner A-1865" Tho rooulting formula was ooded K*2154, and further development was oarrled oat in the plant* m SOTOSM The present status of ST-505* io aa fellows* (a) RT-505-D was rostandarditod in tho plant to the darker K-2154 type* Lot 46014, whieh eas aet up aa atandardv eoaaieta of about 60j K-2154 type, and 4OjC old RT-505-D. It la quite eloae tinotarially to a semL-works standard approved by the cuatomer* (b) A non, large-slM (3*60 aola} formula, K-2240, was Witten based on K>2154, modified on tho basis of plant experience, to giro n Batch for the near standard* The new formula differs from K-193&, which it replaces, in batch also, in a reduced amount of B81 in tho diaxe, and a corresponding reduction of alkali in the base* An inoreaao in MNPA over the K-1936 amount, used during development, was found unnecessary as plant experience increased, and was eliminated in tho K-2240 formula. (0) Plant supervision accepted tho K-2240 pi April 3, 1946. Six batches and a mix were made in the semi-works, after which the K-2154 formula was written* Based on laboratory work with known toluidine variables, and starting with the K-1936 formula, reduction of HOI in tho diaxo, increase in batoh sibo and oonoentratioa, elimination of para soap, and inerdass in HNRA wwo incorporated into the final formula* jia*' The mix, lot 8314,/tooted and approved by the oustcater* During plant development, twenty-one batehoon tho K-2154 formula, and one shading batch on the old formula, were made* All plant batches on tho K-2154 formula were dark, weak and blue, against the old RT-505- standard* Three of tho first four were nixed with old typo ST-505*1, and tho mix sot up aa a new standard* Subsequent production wao varied to natch tho no* standard by changes in the temperature of coupling, and finally by a decrease in tho PA oontent from 15 to 13.5*. Tho process was turned over to the plant on a trial basis, and the batch site iaereaaed from 2*0 to 3*4 aola, with generally satisfactory rssults* The present standard formula, K-2240, was then written, and the problem closed out* Details of tho semi-works and plant batches wo filed in Development Section Notebook 46-40* DUP050150152 *2* Development Section Notebook 46*40. Research Report KH-45-53* laboratory and seal-works study* K*2l54t formula and notes* K-2240, formula and notes* GLOSSARYi RT-505-0* Mota nitro para toluidine* plus 11*4 mol % of Meta nitro-para anlsidinot ooupled to Beta napbtfcol* MNPT* Meta nitro para toluidine* HNPAi Mota nitro para anisidino* HClf Muriatic or hydreehlorie acid. DUP050150153