Document 6B3e2ZeV0m3G6r3VwQBo4v3MR

E. I. DU PONT DE NEMOURS & COMPANY KREBS PIGMENTS DEPARTMENT 256 VANDERPOOL STREET NEWARK. NEW JERSEY Copy No.' 1 Numerical File Poriod Covered. NEWARK PLANT PICMENT COLOR RESEARCH REPORT Final Report TOLUIDINE RED, MEDIUM SHADE, ART-620-D EVALUATION OF SAMPLES OF CALCOS "LITHOSOL" SCARLET BASS U (MNFT) AND ORCHEM CURRENT PRODUCTION JANUARY 13-19, 1949. FILE. DATE; 22101 2/7/49 N42198 Copy to* #1 - Numerical File 2 - Research Office (221.3D 3 - Library File (221.31) 4 - #10 Building File 5 - T. Chalupski - Plant Files 6 - D. B. Killian 7 - Extra SERIAL HO. KN-49-14 Copy No. 1 NEWARK PLAN! PIGMENT COLOR RESEARCH REPORT Final Report mUXDINB RED, MEDIUM SHADE, ART-620-D EVALUATION OF SAMPLES OF CALCOS LIfBQSOL SCARLET BASE M (MNPT) AND ORCHEM CURRENT PRODUCTION. JANUARY 13-19, 1049 CHARGEt 1100-11-44 A-1-44 SUBMITTED BY* APPROVE BY* DATE SUBMITTED* 1/21/49 DAT! ISSUED* 2/7/49 DUP050067186 mmamxm In the course of variable studies to improve the masstone depth and Intensity of RT-386-D, (MHPT BW) a second series was run on competitive samples of MNPT. The samples used in this study weret Orchem lot 8?5 * control. Caloo L-6907 supplied by Orchem* Calc B-6636 - from manufacturer* Orchem lot 191 - supplied by the plant* In the earlier report (KN-48-37) it was shown that Calco and Sherwin-Williams J2NPT gave an inferior product with the RT-620-D pE)RT"386-Qj formula* In the present study the intent was to determine if the Calco IfliPT obtained from the manufacturer showed any variation from the Orchem Calco sample; and ala to compare the effect on the pigment masstone of Orchem1 s lot 37? and lot 191* ' At one time the MNPT manufactured by Orchem contained 0*06# of Duponol WA in order to improve the wetting properties* Then Orchem switched to MNPT containing 0*1? Product SCO* Sue to adverse reports from the trade. Orohem recently resumed pro duction of Duponol-treated MNPT, based on standard lot 883, beginning with lot 190. Lot 87? is presumably the early Duponol- treated MNPT, whereas lot 191, taken from a plant drum, represents current Orchem production. So MNPT containing Product SCO has been evaluated* The Calco sample of MNPT supplied by Orchem showed no advantage over Orchem*s lot 875* However, the Calco sample provided by the manufacturer gave a definitely Inferior product with the (A)HT-620-D formula, as reported earlier, indicating considerable variation in that manufacturer's production* The Orchem sample taken from a presumably typical lot, lot 191, gave a product inferior to that produced from lot 875, indicating a considerable difference between old and current production* Lot 191, at sequi^oi^hlch present Toluldina product ion is utilising, appears to be at a definite disadvantage to lot 875* both tinetorially and in ease of plant utilization* The experimentswere conducted on exactly Idle same modified plant formula |RE)HT-386-3 as ths earlier study. They were run on a 0.2 mol basis* Hone of the samples offered any serious operating difficulties, and there were no differences in the yields obtained. The dies solution was not clarified before coupling* DUP050067187  2 -- The following observations wars made during the mm Slurrying of MNPT into HG1 Orcheja lit 875 slow watting Csfoo immediate wetting C Caleo immediate wetting JEL* Orehem itsUSI very slow wetting Reaction with sulfamic acid slow, fast fast long-lasting foam dissipated foam very quickly slow, long-lasting foam Color of dlaso red red red yellow Hature of dlaso cloudy some sediment clear clear relatively free of sediment cloudy considerable sediment Fast wetting up is characteristic of water purified MHPT, suggesting that Caleo may be using this new technique* Contrary to the general tendency of diazotlsed MNPT to darken on exposure to light, Orehem lot 191 remains yellow over the addition period* This has been noticed in other runs with it* Lot 191 is also dis tinguished by its very slow wetting property and considerable residue after diazotization. The sediment appears to be due to incomplete diazotization. The plant has also obsarved that current supplies of MNPT leave more undiasotizsd MRPT than usual on floor of diazo vat after coupling* The two Caleo samples are identical In their dlaso behavior* The two Orehem samples are much different In their behavior* Sons of the samples show any over-all improvement over lot 875* Rubout Results* Orehem versusi y&jm Orehem lot 875 Offi) m Orehem lot 8?5 <XT) * Caleo L-6907 ws It* TmJiSU ws blue Caleo It* dull str* yel. Orehem mjm it. dull str* yel* Caleo L-6907 (MT) Caleo L-6907 (ST) e It. dull It. dull str. yel* str* yel* Caleo 0-6636 CUT) Caleo O-6636 (XT) m m - vs. dark m e tr. weak tr. dull DUP050067188 -3- Orchem isi_S25 RT-386-D Std.(MX) lt.lnt. RT-386-D Std.(Xf) s.weak blue Calco triSSZ lt.lnt. vs.veak blue Caleo S=Sm v.lt, str.yel. Oroham htoXJkU v.lt. str.yel. RT-620-D(89319)(Mf) It. " * (XX) str.yel. lt.ytr.dull v.lt.,dull v.lt.,dull str.yel. str.yel. str.yel. (HT-620-D ys RT-386-D Is It.,int. in MX, weak,blue In tint) H.B. 1217 I*p. 32, 46 Research Report KH-48-37 DUP050067189