Document DG961oeD6dnDq50NQjNqV9NMO

E. L DU PONT DE NEMOURS & COMPANY KREBS PIGMENTS DEPARTMENT 256 VANDERPOOL STREET NEWARK. NEW JERSEY Copy No. 1 k NEWARK PLANT PIGMENT COLOR RESEARCH REPORT RT-530-D. PLANT DEVELOPMENT OF SOFT-TEXTURE NON-BIEEDING **NBS" MAROON. Period Covered] August 1945 to March 1946* FILE: DATE: 10/31/46 - ? jr -//-V Njete75 N39966 Copy to* #1 Humerieal File 2 * Reeearob Offlee (221*32) 3 - Library Filo (221*32) 4 * #10 Building Filo 5 - F. Chalupeki, Flout Filo 6 Xaperial Chemical Xa4uetriee, 144* Serial Ho. WM6*6f Copy He* 1 NEWARK PLANT PIOUENT COLOR RESEARCH REPORT Final Report Title* RT-530-D* PLANT DEVELOPMENT OF 80FTmTUSE N0N-BISBDXN8 "UBS" MAROON. Period Covered* Auguet 1945 to Mareh 1946* DATS SUBMITTED* July 18, 1944 N39966.01 DUP050150155 Kr-530*# a soft-textured non-bleeding RT-436* type of plgaeat v&s developed la the semi-works in l?4t, but no plant batohee were made* The soft texture eae achieved in the laboratory by the addition of 10jJ "Nusope #50* to finished RT-153-P slurry* or of 5^ "Nueope" #50* to mehed prose-oaks* Only press-sake treatment ms tried in the somi-works. The first Semi-Works trial batch ms ceded K?*530*Ot and let 4646 set up as standard* Work ms discontinued due to mr conditions* Work me resumed in August 1545* at uhloh tine seal-works batohee were made substituting; ammonium naphhhenate for *Hueop$50" which had become unavail able Amentum naphthenute proved te be an acceptable substitute for "Rueope #50* in press-cake treatment* eo slurry treatments were made ef plant material brought te the semi-works. A 10^ slurry trsatment ms about the equivalent ef a 5J( prosecake treatment* Concurrent laboratory otudy indicated eatiefaetoyy reeulto te be obtained by precipitating n fji naphthenic add treatment with magnesium sulfate* At the end of the substitution experiments* plant production resumed* This report describes the plant development of RT-530-D from September 1945* to March 1946* ef which time a plant formula and notes were written* and n standard lot set up. The statue of RT-53G-D at the end ef the period covered in this report is ae given below* 1* Standard formula* K-2286 was written for plant manufacture* providing for the precipitation ef St* magnesium naphthenats in the elurry before pressing* 2* Let 279C9 has been set up ae standard* Gradings of let 27909 ball-mill ground in lacquer are as follows* (a) ve let 25633 (plant prees-oake treated with NHNs) 1 full shade* vs dark* strength* weaki tint* blue* (b) ve let 838O (semi-works press-sake treated with HH^Ix) full shade* e dark) strength* weak* tint* blue* Faint laboratory tests showed the magnesium naphthenats treatment te produce marked improvement ever ammonium naphthenats or "Husops" treatment * in roller-mill plasticiser test* No variable study was made* but the formula notes any be consulted for the offsets ef variables on similar colors* Greater depth in W-530-D can be attained by the addition of Pigment Green 8 pulp te the RT-530-0 pulp before pressing* This was tried in the laboratory end eeal-vorke (KN-46-36) and is mentioned here as a possible means of getting depth ef sessions if necessary* DUP050150156 Plant production began shortly after the seed-works experiment* on the aubetltutioa of ammoaluu naphthenate for "Nusope*. rite batohee were aade by treating preea-aake in the Abbo-Lenart mixer 1 with ammonium naphthenate* Following successful treatment of slurry In the esml-irerks the next plant series one treated In the vat with asanwdum naphthenate precipitated with magnesium sulfate* Detaile of the hatohee aay he found in Development Section notebook 46-41, BMggacBSi KU-42-2Q9 (Seni-vork developiwmt in 1941) D8H-45-1 (Laboratory and semi-works study of naphthenate treatment) DSN-46-41 (Details on batches covered in this report)* GLOSSARY RT-530-Di Meta nitre para toluidine-"Naphthanil" BS coupling of the non-bleeding type containing approximately 5? Magnesium naphthenate* RT-436-D* Meta nitre para tolu&din*-*Naphthanil" BS coupling of the bleeding type containing about 0*2J( Figment Green B* RJ-153-P* Beta nitre para toluidine-"Naphthanil* BS eoupling of the non-bleeding type* "Baphtfaaall" BSt Para nitranilide of Beta hydroxy naphthoic acid* Huaop* #501 Sodium naphthenate* DUP050150157