Document 9rR7Mpap804nvOJnkyZYKR53

FROM: CITY: F. G. Hidalgo Strongsville *. FOR: Mr. S. T. Bowell, D.P.J. SUBJECT: REPLACEMENT OF LEAD CONTAINING PIC?'IEU?S AND BRIERS The following informrtion is being aert to assist you in the replacement of lead containing pigments and lend criers in thc-se formulas which you will need to reformulate to a lead-free bar is. Replacement of Lead Driers Considerable work has been done by the Trade Sales Laboratory at the Research Center in arriving at the best drier combinations to replace lead in the various qualities that we manufacture. Primarily, the re placement is based on addition of zirconium with r. slight increase in the cobalt drier that was previously present .in the formula. Where both lead and manganese were used, they have both been replaced by zirconium, since the 3.ab found better results that vmy than if the man ganese was left in. Where E-396 Lead Feeder Drier has beer used to prevent loss of dry in the package, the addition of calcium crier in the grind has been found useful since calcium appears to be absorbed preferentially over the remaining drier metals. I am sure you hove seen recommendstiors from various drier manufacturers in which different percentages of zirconium, cobalt and calcium are quoted as suggested replacements for lead. Since n great deal depends on the particular vehicle si stem employed, I have summarized in Table I the old and new drier combination of different types of trade products so that, by referring to this table, you may arrive at better starting points for your own air-drying regional formulations which largely will be based on these same vehicles. Row that practically nil oi your formulations that- contain driers will need to be re-written to eliminate lead, this will be the best time to also replace the old fashioned tallatc and naphthenate driers, as well as the high cost octettes, with the new high concentration driers. E-303 (12$'cobalt), E-325 (S'/S'manganese), 13-371 (l6$ zinc), E-382 ( 6$ calcium), E-390 (12$ zirconium) should be used in place of all the other naphthenates, octoates and tallates that you may have in your formulas at present. By so doing, you will gain a head start on cur new raw material simplification program and will alsc benefit from cost savings. One interesting item of information vl i.eh came up in a recent discussion with some of cur drier suppliers,-was regarding tie order of addition of GLD00717') SUBJECT: WSHACIilffillT Ox'" LEAD COltTAlbJJJG PIGMENTS AlvD DMB8S June 2, 1972 Page Two driers. Calcium, v;hcn used, is beau added in the grind since it has flood wotting properties and it also will prevent absorption of cobalt by the pigments. The remaining driers can be added in any .sequence desired, but anti-skinning agents should always be. added Inst, afber the drfero have been stirred in. Oximes will preferentially complex cobalt and other metals, if the driers have not been absorbed first by the vehicJo, and loss of dry could result if the anti-skinning agent is added first or if it is blended with the driers for addition to a batch. Please keep this in mind when re-writing your formulas. Ite placement of Lead Containing Pigments Several suppliers have published bulletins on this subject. A particularly good one is Bulletin ICC-8 dated September, 1971, issued by Imperial Color and Chemical Department, Hercules incorporated. This is. an eight page bulletin that contains many specific combinations to illustrate replace ment of load containing pigments, both for masstone and tint, ond which also includes cost information. If you did not receive this bulletin, please request a copy from your local Imperial representative. Chrome Greens Chrome green abodes car. be matched with a combination of 1.--30-1 Ilansa Yellow, Ij-209 Ferrite Yellow, titanium dioxide and either A-POO Iron Blue or A-116 Phthul0cyanine blue depending on the cost and durability require ments. h typical combination which is used in Y-965 Sprcd Gloss Shamrock Green is 18 pounds W-D30, 10 pounds L-2C9, 20 pounds L-30fl and t.5 pounds A-11.6. Lighter or darker shades of green will be obtained by increasing the JIansa Yellow or the Phthulo Blue, respectively. Chcmotron have announced new blended pigments that will match specific light, medium and dark chrome green shades, but we believe this can best be done by arriving at our own blend from pignontr. that we now have in stock instead of addin-:, to our inventory. Chrome Yellows Primrose Chrome Yellows such as L-119 arc best matched with the greener (lOG) shade of .Ilonaa Yellow which wo hove not bean' using. If you need this shade, try X3051 Kuprocs Yellow 10G from Imperial. So t o titanium dioxide arid a slight addition of L-SOy Ferrite Yellow is required for a close match. The light chrome yellow shade such us 3.-110 can be matched with either I- 301 or L-30-'i uansrs Y cl lows plus ti tunic.!-', dioxide nt ratio of about 3;g. Medium chrome yellow sl 'do? such as I...13? can be matched with Uanca- Yellows by blending approxii^.*1 tely i'O/' 1-30.L, 3:7/ 1-3*13 and 3C$ titanium dioxide. All the above re piaccount;; for chrome yel-lows 'will be higher coot end will a .Iso entail sacrifices in bleeding mil. heat resistance, as well as in lightfastneos. GLD007180 SUBJECT: RmACKi-iKiiT OF I-KM) COIiTAUUNii PIGMENTS AUI) BRIEFS June 2, Page Three Where bleed and heat resistance ore of greater importance and light futtuetir. is o secondary consideration, a diarylide yellow such as Imperial's X-2hv6 could be used in place of Hansa. Where better quality is required, regardless of cost, a more permanent yellou such as 11-11!00 from American Hoechst- (code L-35>6) could be used. Molybdate Orange Molybdate orange is used primarily in combination with lit.hol or BOw red:; to produce low cost, bright red. shades. For air drying products, totaldine red (R--Y10) could be used cr- n replacement for the combination of molybdate orrnge plus lithoJ. or BOII red. However, for baking finishes, a diiiilrooniliiie orange replacement such as R-Y35 should be used. R-735' has fairly good opacity and good light fastness when used for masstone, but it is a bleeding pigment. Again, for additional permanency, a higher cost organic orange pigment such as American Hoechst 3.2-1010 (code L-3'37) or 12-5:000 (code Ii-752) would have to be used. These are over three times the cost of JR-735* For a lead-free, bright red shade, R-6t0 and R-Gkl could be used. R-b'JO at $3-00 per pound is n light-shade red, while R-(>hl at .'pi.00 per pound is a medium-shade red. Both will be practically non-bleeding u;vl will have good permanency and baking resistance. It is practically impossible to suppV a specific recommendation for re placement of each load containing pi merit in the tr.my formulations in v/h clt they are used. The above rcc oraci'd;: L ions are, of necessity , general, in nature but we believe they will, be useful as starting points. Keep in mind that wo should endeavor uo r.'dic all the replacements of lead containing pigments by using, present!;; coded raw wateriu.tr. It you have e color matching problem, the roc of ! he COMIC which is available at most plants will allow you to get a good approximation. Rome specific customer color standards may need to bo modified in order tor lead-free versions to be economically feasible ami of reasonable durability. Please be sure to include in your future Product Povcloptncnt Reports and Monthly Letters of Comments, the progress you have made in replacing lead containing pigments and drier:; so that this information may be published for general reference. GLD 007181 SUDJECT: LKUACEMEm' OF TEA!) CONTA'IWIHO PIGMENTS AND DRIERS Jim1' 2, .1i; Page Four Table I Product Y-^9 Glid-Tone Hi-Gloss Varnish Y-900 Spred Gloss Enamel White 7-*t550 Glid-Guard Alkyd Industrial Enamel White Y-I16OO Spred Lustre Semi-Gloss Enamel White X-59.00 Ultra Hide Gel-Flo Alkyd Semi-Gloss White * Lead Drier E-3*(*i - 0.07%-Pb E-3?*i - 0.055% Mn E- 30*i T 0.05% Co E-380 - 0.02*1% Ca E-396 - 0.51% Pb E-382 - 0.03fi% Ca E-390 - 0.1*i% Zr E-303 - 0.075% Co E-396 - 0.78% Pb E-30li - 0.085% Co E-392 - 0.076% Zr E-396 E-3*t*l - E-380 E-30I4 - 0.80% Pb), 0.1(2% 0.0*15% Ca 0.0V*(% Co ,jr<i E-396 - 0.50% Pb). n,,/ E-3*7 - 0.1(7% Pb)1*0^ E-382 - 0.023% Ca E-303 - 0.051% Co *- Ilo Lead Dri< r B-303 - 0.05% Co E-390 - 0.10% ?r E-382 - O,0*i't Ca E-390 - 0.1*1% Zr E-303 - 0.075% Co E-302 - 0.066% Ca E-390 - 0.1*% Zr E-303 - o,o?r% Co E-302 - 0.051% Ca E-390 - 0.1*0% Zr E-303 - 0.057% Co E-390 - 0.13% Zr E-382 - 0.0*15% Ca E-303 - 0.051% Co * Percentages shown correspond to metal content based on vehicle solids (by weight). FOR: Technical Directors cc: Regional/Arca Vice President Industrial Sales Managers Plant Managers Quality A,ssuranee Managers Mr. W. D. Kincel), Jr. Hr. L. F. Long Dr. H. J. Kiefer Mr. I. J. Foote Mr. L. WiiGscr Mr. H. M. Werner Mr. E. J. Ro.way Mr. R. J. Havilnnd Mr. M. W. Malaga g l d 71B2