Document 9Q9wkOGaN8Y38KRyyGNyJVD6

E. I. DU PONT DE NEMOURS & COMPANY KREBS PIGMENTS DEPARTMENT 256 YANDERPOOL STREET NEWARK. NEW JERSEY Cow J^o* - ~1_ Numerical File NEWARK PLANT PIGMENT COLOR RESEARCH REPORT Final Report ALKALI RESISTANT RED PIGMENT HE-543-D SEMI* TfJRKS DEVELOPMENT A STANDARDIZATION Period Covered: AUGUST 1943 - JURE 1944c 221*32 FILE* DATE; 1/3/49 l N42180 Copy to* #1 - numerical Pile 2 - Research Office (221.32) 3 - Library Pile <221.32) 4 - #10 Building File 5 - V. Chalupski, Plant Piles 6 - W. P. Spengeman, Newark 7 * Extra Serial No. k n -48-34 Copy Ho. l NEWARK PLANT PIGMENT COLOR RESEARCH REPORT Pinal Report % ALKALI RESISTANT RED PIGHENT RE-543-D SEMI-WORKS DEVELOPMENT & STANDARDIZATION AUGUST 1943 - JUNE 1944. CHARGE1 1100-12-41 (A-IC-41) SUBMITTED BY: B. J. Hess . APPROVED BY: J> 0. Morrison DATE SUBMITTED: 12/6/48 DATE ISSUED* 12/28/48 DUP050067096 Serial Ho* KH-48-34 BlEWWMWe Competitive developments in the alkali resistant linoleum lake field had seriously affected the sale of our rather alkali sensitive red lakes, RE-389-D and RL-451-D at Congoleum Nairn. The development of RB-543-P and its laboratory counterpart, K-1888, was tha result of early work designed to meet this competition. The laboratory studies have been reported In KH-42-29 and Hotebooks 933 and 952. The laboratory product} K-1888, was set up as a dry blend of two red lakes (K-1607 anil K-1872) and was designed to match Nairn's #21 Bed (C #488379* Both of these lakes were approximately 8# extensions on whiting ef two slightly different PNOA - BBS couplings* Semi-Works trial batches on the K-1607 and K-1872 processes gave the following results versus the corresponding laboratory standards* RT-16079,lot 6632 va K-1607s it., yellow * OK - blue* RT-1872-6, " 6631 vs K-l@72| It., intense - OK - yel.,intense. As a blend of the above material was much too light to match K-1888,further manufacture was necessary to supply sampling material* A satisfactory product was made with a modified K-I872 procedure correcting an error involving coupling alkalinity in the original process and using a para soap variable* A blend of two batches made on the modified K-1872 process was set up as the semi-works RB-543-D standard, lot 41867* A comparison of the semi-works and laboratory standards follow** t 41867 vs K-1888* vs dark - vva strong - vs yel* very dark - 7# strong - a. yel *, intense, The RE-543-D standard was obsoleted in June, 1944, because of the customer's request for the stronger lake, RM-545-P* mmvm The laboratory match to Nairn's #21 Bed, designated K-1888, was based on a blend of 35# K-1607 and 65# K-IS72. Results versus the competitive product follows* -88-13) vs C-46837* e, trace yel*- OK - trace blue, ws intense. TM u*. - o k - ,, DUP050067097 Semi-works study of the processes was started in August, 19434 upon receipt of a trial order from Bairn* First manufacture in the semi-works was based on modifications of the laboratory procedures 1 K-1607 and JC-l872t designed to fit plant equipment limitations. The principal change in both processes was the use of the RI-539-D procedure for dissolving the BBS. loth semi-works batches were on the light side of their respective laboratory standards* Difficulty with control of coupling pH was probably primarily responsible for the tinctorial variation* A table of the results obtained follows# JSsm Br-asasa 1607 I872 si 6.B-7.2 9*2-9*6 MUMl m 5*7 7.1 It.,yellow - OK - blue It.,intense- OK * yel.,intense It was subsequently found that there was a typographical error in the caustic soda amount in the original K-1872 formula and a second semi-works batch was mads correcting the error. A normal test was obtained In this case and the bateh finished up slightly dark in mass tone, equal in strength, and yellow in tint by varnish dryer rubout versus K-1872. It was also a fairly close match, by rubout, to the Nairn standard, C-46837 ( vs dark - 5% strong - s.yel.). A series of two batches ware then mads studying the effect of increased and decreased amounts of para soap in the revised K-1872 process. A cold method of dissolving the NB8 \similar to the original laboratory procedure) was also used in the decreased para soap hatch. 4 50% cut in para soap (together with the SBS solution variable) gave the following results# AM* hliHot 66*49 vs vs t dk..|bMl*uMe... - w----e--a---k-- - yv ellow* C-46837# v.dk*, blue, dull - weak - ^yellow II It vs K-I8881 v.dk., blue, dull - vs weak - yellow Linoleum Composition feat Loto649 vsK-l88#weak- yellow Doubling the para soap In the K-1872 seml-works process gave the following# Lot 6651 vs K-1872* It.,intense - s.strong - s.blue, intense* vs c-46837* s.It., s.dull - Strong - blue, s.intense. vs K-1888* dk., blue - strong - s.blue, s.intense. DUP050067098 3 frta9lg\ga-g.qgpgmon last, Lot 66531 vs K-1888* strong - bins A blend of equal parts of thest two batches was set up in February, 1944, as the RE-543-D standard, lot 41867* An HS-543-D standard formula, K-2122. based on semi-works formula, lot 6651, was issued in February, 1945, for costing purposes but the color had been obsoleted previously (June, 1944) (superseded by r m-545-0), mm... There is no patent restriction on the manufacture of this color* It is not believed that this study has resulted in any patentable developments*' mmugii K-1607 An 8$ extension on Whiting of a The light blue component of K-1888* PPOA-HBS coupling* K-1872 An 8.8# extension on whittog of a PHQA - PBS coupling* The dark yellow component of K-1888. K-1888 A blend of 35# K-1607 and 65% K-1872. &wextension of a PNOA PBS toner on whiting* fmextension of an on whiting. 539-D type toner. <FH0A PBS) m nitro ortho anlsldine* iaphthanil" BS; the mete-nitranlllde of beta hydroxy naphthoic acid* sm* of Pigment Scarlet dye (anthranilic --f R Salt) on alumina hydrate and barytes. rSextension on barytes of RT-329-D (a PMTA toner of Bhodamine 6GDH). P3Mu Phospho molybdO tungstic acid complex* BSIMS-Sl. DUP050067099