Document MJeXX3NM3vjZLv8xG5ODRL3ZV

E. |. DU PONT DE NEMOURS & COMPANY KREBS PIGMENTS DEPARTMENT 256 VANDERPQOL STREET NEWARK, NEW JERSEY Serial No.KH-54~10 Copy Mo. / NEWARK PLANT PIGMENT COLOR RESEARCH REPORT im&i i (um d is p e r s ib l e ) c o l o r s Period Covered tiowtabtr, 1951 ~ 1953 CHAR: A-IC FILE* DATE: 173.6 5/4/54 NJ 4497 Copy tot lomS jii ______ m* ( H. Arnoul - Plant 1 t* 3* Monahan - X file fftmana Extra Serial Ho, KH~5A~1G Copy Ho. / ffiamiftr Pt.&ny CHEMICAL DIVISION * COLOES HUAL ^SPQSf T2T3LE: LD. (UWC DISPERSM) COIOES PSHIOD COVERED: IIOVEI-BSS, 1951 - JU1IE, 1953 CHAEGE: A-2C s u b mit t e d b y j w . a . APPEOVBD it! A. DATE SUBMITTED! 4/2/54 ImS ASw USUi DUP050069798 KN-54-10 JSb* ob, of -hft voile described In this to a new line of oolora specifically for use in %m _o_f_th__ e typo# Prior to the asteal _ , a survey of too latex H2S tfr' fff to **.#'<".ha cause of tli# commonly reported deftclcrcles of>"" the ID lino currently in use at that time* These oolora to latex taint tended to promote certain sIutcmhnaa efflor4emsitmceA ntchea,t pthoeormeaalonz*stsooruargcee i m line was the high proportion of the anionic eater apali vis blancol which ia present in ve:. ^ about half of the total W pigment# This agent# iMch ia salt of a sulfonic acidformaldebyde condensetion contains a relatively high percentage of Hapo*. which eontri to efflorescenee. y The immediate objective then# eas to decrease the agent, effectively increasing tha toner content and at tha ,.___, _ to find a suitable Na free agent* Zt tea also neccsaary that tli new products disperse satisfactorily in latex paint* A new line of dry colors designated with the suffix ID (latex dispersible) was developed for use in latex sxulalon paint* The toner contents of these colors range from $$*40$ with 10$ Olay in an cases, the balance consisting of the K salts of eithsr or both of two new sgeutsvis JhomOMp* f*741# compound alsdlar to blancol and "Xustrex 820w,I-731# an alkali soluble self<mated copolymer of styrene end maleic anhydride* The DD colors,compared to the old WD eignificant improvement. Strength end near are considerably better* . Efflorescence is storage stability and wash resistance have Proeesswise, there is a considerable reduction in dsyiag time compared to the $0 colors# Based on limited studies l*tafcrex* containing IDs are ia an tion tioa that the MMHU I The new line of W colors consists of the following types which DUP050069799 -2- KN-54-10 represent the color range moot commonly rood In emulsion painta5 BON Maroon Dark HV CHVJ QIW9 BP-35S-D ndl Medium Toluidine Hid Toluldins Yellow IIl*-*Id sdmSUmiaMnmmdPemSiMiB'O'I' studios revealed that salt of a compound chemically similar to Blanool, mas ............ uhsn used in only throe of the colors, via the BOS Maroon, uw -Watfftlyn y'g*> lad' ****** figment Orson B. 3m the others, it mas found that______________ ^ mas used, increasing the toner shove 33$, uhieh is equivalent to a reduction in agent below 67$ resulted in poor dispersion and meekness in latex paint tint* ladder series mere run from 30$ to 90$ toner using named sun tns k ee*t -or "imstreu exp* separately and in combination* Ai.k<yiah fa aensral. in the laboratory. it ** to drop the Xustrex to ae low as 16.5$ in combination mith an equal amount of Danad in the presence of 67% color, it mas decided to increase the Lustre* at the expense of the Bemad* this quantity of of the mo^S**** fiSOQQt IVSQilVd tO fluidilO case of ths "Monastnals*, uhieh are sufficiently aaMiyif. (blancol) added during aeneous milling* no additional amount mao esquired. Other dispersing and methods of mechanically dispersing the presscake mere M* Of these, lustre* and the Manton-Gaulin gS^^3T^.ntoS-5^S*^SS^,sSS4851^rSS2BS^g* Irssft^i xs Tehaeuraeetitov IimhnioimampiiIpiamriweni.t different in ma na*1 ^ . The colors were tested tinctorial!* in .,.||tc paint in tint and dooptona. To product tints,^.2% color on the total pint weight basis use used for the greens and blues and 0,3$ for the and yellow* Beeptones mere prepared ping 2*0$ of the -- - and 3.0% of the reds and the yellom. In order to slag , method, the dry color in most eases mas added directly to the HyAs^/J^S'iCgig " teen crusoea out on a u pinoaro %* rnstnoa jmosppmj* mans . tests sueh as reactivity, efflorescence and mash resistance i ..:- -:ij' DUP050069800 KD-54-10 usually made on Semi-works or .___ ______ standards. Ia soma cases. tha dry Addition byprewetting with water ll color-1.5 mater) before adding to tha shlta paint. lu a^BwUKSRws^A- X^Bj^pdMwwSi^H(P^asr ai^R^RBo^a *b3*^R. *dBw3P(RR* jp3wvPiiwvggPwe wetting vita mater* The Luatrex colors tend to give thicker* granular pfflarfy wi< do not disperse in water in tha rapid dyoliko manner of colors containing linage Bawtnt.. of h^^ni, o j * napps snch as afro **id W Una. However* as stated previously* considering tha high tonar content* dispersion in latex paint ia aulte good, In thia respect* it mi observed that where there wee a tendency toward grittinoas or neor m mdUBtion in tha tMtroantaaa or tonax* <ninftw.4 t.ha 'JpVFppjlB PWatwAfVO 'B--1*T----PS BB ^^BB'BBWS^----* BB WOBOwd-- "B^B ^B'F^^B*B^* *BM^|Ww `^B :b .B|BW '*W*^BV dispersion. During tha ooursa of tha development work* acme preliminary stadias on tha problem of migration in alleyd fortified latexes mm Although tins did not permit a mom complete study, it my bo stated that m general, an toe coxors containing juustrex ware superior4BaB4 ^-'Q-*-- j|.MB HBBkAMiil 0Wa* aaah^i-jaBaMa aa**atoa*ajgaa4l2Batfi 'T.'%aMi4ft:riUk^M BftaiKBMlb i b in migration resistance to controls containing Baacad. The old WDs may be obtained in tha new IDs as compared to the as followsi 1. All tha DD colors with tha exception of tbe,*lleiiastnals* 0P-740-D and BP-356-D and the HAphthanil, RP-691-D (which has no WD counterpart) range from 2 to 3 times stronger than the WDs and although the selling price per pound ia higher, batter money value is obtained. fMwiwi ,!>* dispersing aa*Hfe ton ^VjBB^IB-yPBV BBBNWB FB --Braw^fW significant Improvement In reactivity reduced, -there is stability. Practically no efflorescence occurs in paints lonsuiacect sa colors and Dow 762 latex* itself d*** a __ wad it ia alao possible to lally smaller amounts of color* of tively DUP050069801 KH-54-10 aiwifc exeunt n the taint taut nft advorso effect on wash reaiatance* Jo DUP050069802