Document 4ayM0GJgodmg27mqDBOpmyYOp

E. I. DU PONT DE NEMOURS & COMPANY KREBS PIGMENTS DEPARTMENT 256 VANDERPOOL STREET NEWARK. NEW JERSEY Copy No. 1 Kumerieal File-Libr NEWARK PLANT PIGMENT COLOR RESEARCH REPORT Pinal Report \ Title: Improved. Texture Molybdate Orange Period Covered: 7"6"48 to 5-5-49 .A,. I^ FILE* 211,3 DATE: 6-27-49 n NJM79 N42212 copy to# musartoal File , Research file* (211*3 raos. ML 0* 3* Killian, Hewer* Extra a Serial Ho* KH-49-31 HBH&3K HiJUff HGMEBT 00393 RESEARCH REPORT Pinal Report Titla t Improved Texfcire Molybdate Orange Period Covered* 7*6*45 to 5*6*49 mtE soBMimi 6*15*4* fA'/ty / / DATE ISSUED* 6-27-49 DUP050067334 Work to improve the texture of Molybdate Quango has been done periodically fop the pat too years* t e -503-6, a Molybdate Orange treated with Turkey Bod Oil for texture improve* ment* was standardised in Bay 1040 but was aeon found to bo un satisfactory because of Its reactivity in printing ink vehicles# Work was demo in 1041 to overcome this difficulty and it was found that a ooabinatlon of 0 Petronaie and 1% Turkey Bod Oil gave a satisfactory improvement in texture {about 0+ wedge .grit unit# bettor than standard at 6 loose passes) and satisfactory livening* Plant development was discontinued before its completion because production eopacity could not bo interfered with at the tine* The froblem was taken up again in 1044 end a mix of three plant batch##* ot 44373# wao sot up as K-2598# Ho regular production was carried out because of wartime restrictions* She original objective of the present study was to develop a Molybdate Orange having the tinctorial properties of 102-421-13 but with improved texture end reduced reactivity in lithographic var nishes# When it was found that the cost of the reactivity improve ment would be considerable* the Objective was modified to Include solely the texture improvement* mmssm A Molybdate orange having improved texture compared to 3E-491-6, SD-48416, and reduced reactivity in lithograph! var nishes can bo produced by slurry treating 3B-421-D first with a 2% Petrenate - 1$ Turkey Red Oil mixture and then with 2$ of tetra sodium pyrophosphate {chemical 86 - percentages based on dry weight of pigment)# 3SH&1-8* lot 89349* the proposed standard mix of this material,was rejected on the basis of the cost penalty involved in the double treatment and processing difficulties* 3E-4S1-6# lot @9466* a mix of plant production employing the Pefcronate -Turkey Bod Oil treatment above* has bssa accepted as a mm improved texture standard for 113-421-0. In July 1946 it was decided to standardise an improved texture 3E-42X- using the 0 Petronats - l^Terkey Bod HI treat ment* which had previously been found successful* It was also de cided to try to reduce the reactivity of 36*421-6 in lithographic varnishes since a complaint on this property had been received from the E* J# Kelly Division of the Sun Chemical Corporation# this, cus tomer found 36*421*6 to be reactive in a #1 regular lithographic varnish* Laboratory investigation Shewed that reactivity in customer *s vehicle could be ^markedly reduced by the use of a tetra sodium pyrophosphate (Chemical 56) slurry treatment* ing 36*421*6 slurry with the texture agents and then with u 66* Improvements were made in both texture and reactivity* Plant trial of this load gave a product with similar improvoasnts* but < aiderable difficulty was expericnotd in the filtering end washing DUP050067335 loreover. the thixotropic nature of tho pressoake led to yield losses* 5his dlffloulty was directly traceable to the use of Chemical St* Effort8 to eliminate the thixotropic behavior were unsuccessful* So spite of thit operating problem it was decided to proceed with a standardisation wm* X six, lot 89S49. waa poo* pared and evaluated against standard 333-431-D, 3D-48416, the " process was apanaonea* nowcver* oscause or tne aaaoa. cost or too Mating agents and to* reduced yield* a decision was aade to mm n**n <tVi* taxtieNk Affinttf al *. WlinMt IK-hI**!** . i^f VFWwewwA^^am v ps ^p .c p w p *MeP'iSfr*epgj^ v f a a p^f e^F^ew^e ^aoiwaae^p *w **^a a s f iw ^^f `gpFAe^^sppcw nais*iniPC?eews^^ wn aado and a fixture, lot 29623- of tip products compares as follows with ISS-m-D, SD*4S416i yi-421 Hd81 89666 vs 32-48416 VS* die* s* doll flmt WS fr/Haataees ws.str. va .yellow twiooj * B*t@l Yfi-421 @9383 ws* SD-48416 Shfe Kill feet m vs.dk*t ve*red gyjgjililiy--Jjg h s h u k i*p 9>mi@ XE-421-D; 89686 IS* 14* 14 14* 15+ 16* vs.hvy. ole 2? 81 tins! T.A&Jbm^ueAiwOdLl t.rjy^oa^siAisOdtt 89686 aw* SD-48416 l^Coler intense 0fl$ dolor s.strong tint Linoleum IBS-421 IB-421 89608 vs* @8*48416 JR s.Intense Ms * tint * m all otter properties tested tho two products wore very similar* Ho reason is known for tbs intensity of lot @933 in vinyl and linoleum but it may bo associated with a better dispersion aided py w h o venture agents* lot @9688 was approved by Sales as a naw standard for HE*421*0* After a performance run in tho plant the process waa ' accepted by the ITeduction Division* DUP050067336 MQgRAMt Ho additional work m thin pnoblo* la plannod* aw mmm* It la boliovod that nothing of a patoattblo nature was unaovored In tb wosic auaaariaod la this roport* HBS0 HB-1300 DSH^i3-4 DSH*43-S6 DSK-40 KH-4S-289 K*4S*S4 DUP050067337