Document 05vNxNdaZ6MR87bmew7DoRed

E. I. DU PONT DE NEMOURS & COMPANY KREBS PIGMENTS DEPARTMENT 256 VANDERPOOL STREET NEWARK. NEW JERSEY Serial No. KN-46-64 Copy No. 1 *2 /^, ^ .. r\ ' I V NEWARK PLANT PIGMENT COLOR RESEARCH REPORT IRON OXIDE PULP - K-2383 Period Covered: July 17 - August 5* 1946 FILE, W- ^ DATE, 9/18/46 N39969 / f //- Serial Ho. I3M6-64 Copy Ho. 1 Copy tot #1 - Numerical File 2 - Research Offloe (210.2) 3 - Library File (210.2) 4 - #10 Building File 5 - # 6 Building File 6J m. Imp"erial Chemical a Industries, Ltd. H g W II * 9 . F. Spengesan NEWARK PLANT PIGMENT COLOR RESEARCH REPORT Final Report Title* IRON OXIDE PULP K-2383 Period Covered! July 17 - August 5 1946. smarm by * a a * Bri**iar* DATS SUBMimBs 9/12/46 N39969.01 DU P050150166 irosBmuQg At the request of Sales, F-4-P was investigated for possible use in the paper coating and heater dyeing fields* Homogenisation and treatment with dispersing agent were tried* A formula, K-2383, for the homogenisation of F-4-P eas written for eoeting purpoeos* SWPTA,coHmsi^ 1* F-4-P is unsuitable for paper costing and beater dyeing use beoaueo of tho physical nature of the pulp, vis* aonftuniferaity, poor dispersibility, and water separation* 2* Horaogeaisation of F-4-P by high speed aixiag ead adjustment of its solids content from *40 to 22% produces a uniform pulp with Superior dispersion properties* Observatiea of laboratory pulps indioatsd slight separation of water* 3* Homogenisation of F-4-P with a dispersing agent, e*g* Blaniolf was apparently without effect on the properties of the pulp* 4* Homogenisation and standardisation of F-4-P at 22?> solids resulted in an inorease in total mill soots of $6*34/100 lbs* (dry basis) baaed on tho use of the currently available 55 gal* Lanark mixer; and an inorease of $2.0?/l00 lbs. (dry basis) on the basis of a 550 gal* Lenart mixer which tho plant has on order* 5* A water dispersible dry pigment prepared by treating F-4-P with Blancol In a 50/50 ratio was of no interest* notebook 1017 - Expts* 57 end 5$ K-2383 formula J. Wright's letter of 9/11/46 to A* A* Brisselara* GLOSSARY Blancol is the condensation product of formaldehyde and naphthalene sulfonic add and is purchased from General Dyestuff Carp* DUP050150167