Document pezRogEjwO2pnD3DRKDBKKvg6

E. I, DU PONT DE NEMOURS & COMPANY KREBS PIGMENTS DEPARTMENT 256 YANDERPOOL STREET NEWARK. NEW JERSEY NEWARK PLANT PIGMENT COLOR RESEARCH REPORT RT-573-B DARK TYPE RT-530-D FOR VALSPAR CORP. UETA-HITRO-PARA.-TOLUIDINE -+ `NAPHTHANIL" Poriod Covered; November 1947 to February 1948 FILE; DATE; 10/18/48 N42166 rueam Serial Ho, KN-48-20 Copy No* X Copy to* #1 - Numerical Filo 2 Research ffffioe (22X*32) 3 - Library File (221*32) 4 - #10 Balding file 5 - 1* Cbalupeki Plant Flloo 6 V* F. Spengeaaan * Neeark 7 - Naira NEWARK FLINT PI0UENT COLOR RESEARCH REPORT final Report Title* RT-573-D Dark Typo RT-530-0 for Valepar Corp* Ueta-nitro-pare-toluidlae -^Baphthaail* Period Covered* November 194? to February 1946 SUBHimD BY* A. 0. Nille APPROVED BY * A* DATS SUBKtTSKD* 10/ll/48 mm ISSUED* 10/18/48 DUP050067013 d ar k tm RT-530-& IHTRODUC'flOH !* Valspar Corporation laid utilised RT-530-D purchased in the fora of lacquer chips from tha RBH Diaparaiona Company, for economy raaaona Valspar daeidad to make their own diaparaiona of dtj pigmente in lacquer and RT-530-D was found to ha tod light for tha Hudacn Motor Car Maroon. Ona lot of Harmon'a IfT-l waa found aatiafaotory for this p&fpose and served aa atandard in thla work. A brief laboratory atudy ti made to Increaee tha depth of BT-530-B* maintaining intenaity and ita deairable working propartiaa. A vary limited variable atudy waa made on RT-53C-D (A) cowering primarily tha uao of firat and second component aooeaaory agents. It waa found that tha substitution of ,,Lltheao^, Aoid BOM for 1C$ of the "Napbrthanil" B8 gave a product of approximately equal depth to Harmon'a MT-l with good intenaity but at a eaorifiee of tho relatively good bleed of RT-530-D. To inturo good diapersion, thia product had to bo high speed pulverised. After viewing panels, the customer placed a trial order for 250#* tho aami-worke and plant development will be covered separately. Meanwhile further work waa carried on in the laboratory in an attempt to regain the bettor blood of RT-530-D maintaining the dark maaetone, This work will bo covered in a report on ART-590-D. Optimum depth of maeeione waa obtained with tha 10j aubatitution of BOH and further increases tended to light the color. This variable eon bo wood for abading purpoaea by reducing the amount of BOH and replasing with "Naphthanil" B8 if tho color ia too dark. The aeoaaeory agente used ware beta-hydroxy-napbthoic aeid (BOH|, ortho* ohlor-para*nitroaniline (OCPHA), 5 nitro-2-andno aniaola (5H0a-2NHa-An) and math** nitro-para-aniaidine (MNFA) Ortho-chlor-para-nitroaniline and 5 nitro*2 amino** aniaola. whan used ia amounts up to 1<# of thw TOf on tho original RT-530-B formula, did not affect the tinctorial properties. Further inereaaea in depth of RT-5B-D may be obtained by uetbgmetanitro-para-aniaidina as an accessory agent, or increasing the caustic seis in tho coupling by eliminating the soda ash. It should bo noted that both these wariablaa give dullness also. B Wood Rosin may be substituted for the napthonie aeid in RT-573-D *o increase the depth slightly. Muzm. The laboratory samples ware submitted to the paint laboratory for evaluation in the Valspar laoquer vehiele. The reaulta are recorded in the Faint Laboratory Memo's #148 of 12/31/48 and 1/26/48 submitted by t. O'Haill. DUP050067014 The lacquer grinding formula is given belovi (1) l)H!e. S.C. eol'n. (2) 1/2 see* 8*0, eol'n. #15 Blown Castor Oil Bibutyl phthalate (3) Mixed Solvent TO.# 20.6 gal, 30.4 gal, 9,0 gal. 1.8 gal. AA .0 gal. 0,W. m 8.05 Ibs./gal. 1/4 too. m**9' 30* (3) Mixed Solvent lJ) (3) Mixed Solvent 27* JwgoLr (3) Mined Solvent Butyl Acetate Butanol Ethyl alcohol Methyl ethyl ketone Toluene 15 48.4 & 15.6 m 10.5 35,8 TooT TO- Ischnioal Service Report #73 of J., Callavay on 10/1/47 ' " #87 of * on 11/26/47 Work Request H-102 11/3/47 Paint laboratory 8^0 |148 of W, O'lfoill 12^4? Notebook #1162 Ex p . Deeorlstlon 27 Substitution of BOS in 5, 10f 15 4 2<# amounts 28 OCPfJA and JSOa-ZSHa-in for MftM in 5 ft VS$ amounts # Increase HaaGOo-jdeerease RaQH|T use of 8 Wood Rosin 8HPA in 2,5 4 m amts in 1162-278 formula. 35 Substitution of 808 In 8,10, and 12j amounts* DUP050067015