Document rpmO0n99Ywp8xK20Ykez8Z3dJ

E. I. DU PONT DE NEMOURS & COMPANY KREBS PIGMENTS DEPARTMENT 256 YANDERPOOL STREET NEWARK, NEW JERSEY Serial No. KN-50-38 Copy No. 1 NUMERICAL FILE 4 r X) Period Covered NEWARK PLANT PIGMENT COLOR RESEARCH REPORT final Report (Laboratory) PROCESS SfWX rOH THE MflUPACTVHE o f V:54S4)(?H0a -HBS OB WHITING) JOfcS 8, 1950 - OCTOBER 6g 1950, TV h j *Tr FIEE? DATE: 221o32 11/27/50 Serial No. KN-50~38 " Copy No. 1 Cepy to: #1 - Numerical File 2 - Research Office (MR 221*32) (GR 177 ) 3 - Library File (MR 221-32) (CR 177 ) 4 - V. Chalupski - Plant Files 5 - D. B. Killian/A. Siegel 6 - W. F, Spangeman/J* B. Callaway/PJM 7 - Extra NEWARK PLANT PIGMENT COLOR RESEARCH REPORT Final Report ; (Laboratory) Title: PROCESS STUDY FOB THE MANUFACTURE OF STANDARD RM- 54 5-D (PNOA --^MBS ON,gHIiING) Period Covered* June 8, 1950 - October 6, 1950. Charge: Al -IC-40 (1100-11-40) Al A* ft- SUBMITTED BY* W. A. Fly: APPROVED BY* A. A*' Brize DATE SUBMITTED* 11/14/50 DATE ISSUED* 11/27/50 < y? DUP050068270 mmmm - 1- It Is generally recognised that the usual process variables designed to produce specific tinctorial effects can also influence other properties* However, the extent to which these non-tlnctorlal characteristics are affected is not always known, Por example, certain Congoleum Nairn shipments of HM-54 5-D (PHOA-"->HBS on Whiting) which were considered to be satisfactory material by the ordinary rubout method were found to be poor in texture as judged by the customer's special method of testing* The purpose of the work described in this report was to determine the effect of the major variables in the WC" process on texture* It appears that greater masstone depth than RM- 54 5-D, SD-48530, cannot be obtained without incurring poor texture which Is evident by low strength when tested by Congoleum Nairn's rubout method* Para soap was found to promote coupling and to improve both the texture and the bleed resistance* Adding the para soap to caustic soda solution prior to the NBS addition results in more rapid and more complete solution* Under certain conditions, MNPA can be used as a blue tinting variable without affecting texture or bleed* mm&mMJUMBL All of the studies were conducted on a laboratory basis using the RM-545-D(C) process and the results were evaluated by the Armstrong (TF-5007-1) and Congoleum Nairn (TP-5002-1) rubout methods* Strength as developed by the latter test ires used as a measure of texture* It was observed that lowering the amount of acetic acid used in the precipitation of NB8 prior to coupling gave a darker masstone and poorer texture* Doubling the para soap resulted in a slight loam of depth, but also gave slightly better texture. Combining these two variables in a single formula gave a fairly close masstone match to standard without loss of texture* However, a yellow tint also resulted* Attempts were then made to develop blueness by substituting PNOA with MNPA in small amounts, but poor texture and dark masstone were obtained at this high caustic level* MNPA substitution on a normal caustic (MCM process) basis can be used effectively as a tinting variable in amounts up to 6p with resultant slight increase in depth and no effect on texture* Darker masstones and good texture were aought by decreasing the amount of acetic acid on a 5% MNPA substituted "C" formula. Soma depth was gained In this way but it was not possible to obtain a darker masstone than standard without affecting the texture adversely* DUP050068271 - 2-- NASD and NQL in 105 amounts ware ineffective as a source of additional depth# However, both gave slightly hatter texture and a yellow tint when used with the noraal amount of caustic* the results obtained using the different modifications of the "C" process ere outlined as follows 0 ifSftfltefcsh Ul4.9r-\4A). Double Para Soap (1349-34B) High Caustics Double Para Soap (04M8C) 5# MHPA (1384.3A5 Ddihle Para Soap (1384*313 PNOA 510 510 MHPA 00 HaOH 243 120 954 954 MaOAc 365 365 610 10 (HaOH) 298 298 (HOAc) 47 447 510 485 485 0 25 25 243 243 243 120 60 120 954 954 954 182*5 365 365 250 610 610 122 298 298 183 447 447 field 5825 5950 5825 5825 Tinctorial Uesults vs 8D-4M30 HT Str* Hue M SI Hue WL Str* Hue IBP Str. Hue MT Str* Hue Armstrong (TF-5007-1) It* wa It we m m n yel si. o blue It * blue wk wk It. Congoleua Haim (TP-5002-1) s Vs elf VS* yel blue blue yel* etri yel .Mmmi Lab. B*B* #1349 pages 127-190 #1384 " 6- 27 MPE DUP050068272