Document NGJvzODXNn9NxMV6Zke9eqzQQ

1\ * ** i 7, TA U*** Sucp. 9 l'ebrunrv 233 V" 1972 w c o n f i c :sopjr-i pr5>roxj2 c /.t al v zei> k^h -c l o al kt o s C. F. Lachacyor tii msrrs'nor: Two experimental Kem-Glo Alkyds where received from the Chicago llcsin Laboratory for evaluation. These were designated as (30 09 U7) and (39 29 fcb) representing (39 67 50) and (39 55 52) respectively ir. which the letd cctalyet has been replaced with oouivm hydroxide. This is in Keeping with new goverror.ent regulation that t'-.ere shall be no added lead to paints sold for use ir. the home environment. The (39 99 57) and (39 99 66) were factory production batches at Chicago. ?F.D"-Or/dPlii The experimental alkyds were tested in Kcai-Glo, Hem Velvet end Kem Hi-Gloss formulations where the bulk of these alkyds will be used. Laboratory batches were made on the Cowles JlSD and tested for the specified properties. Samples,vcrc plated in the laboratory hot box at 160* for a period of at least on week. After re moval, the samples were tectod for etabillty in drying, flow, gloss and viscosity. The samples were also examined for any tendency to seed. Panels were prepared from the room temperature samples for water immersion end humidity tests. In these tests, standard materials mads with lead catalysed alkyds were used for comparison. Steel panels, primed and unpriced as well as wooden panels were prepared, T.~S'.:in S: Enamel properties such ae viscosity, brushing, drying, * gloss end flow were all standard. Hot box sarnies all retained satisfactory crying, pood flow control and were free of any seeding tendencies.* Viscosities showed seme drop but not serious. There is a tendency for thixotropic type material such as kem-Cio and Kern Velvet to show a drop ir. viscosity in prolonged hot box tests. Test results are tebulcced on the attached cheat. * In the case of the lien Ui-Sloss samples where a direct comparison uesiaade with standard materials, the sodium hydroxide vehicles chow a definite advantage in ,, drying stability after 7 days in the het box, gy ciVSlC::; From the results of our tests, Kcm-Clo alkyds (33 55 52) and (39 67 50) made with sodium hydroxide replacing litharge as catalyst performed satlcfcctory in the products in which they are used. These are latm-Glo, Kea Velvet and Kea hi-Closs. Kr. C. K. Ccrlsor of the P-esir. Laboratory in Chicago states that there should be no probiens in adopting the sodium hydroxide catalyzed vehicles in production. Actually, sodium hydroxide has been used for some time in a number of regular resin formulations. On the basis of these results and declarations we recommend the immediate revision of (3? 55 52) and (39 67 50) to show use of che sodium hydroxide ctalyst. With the Inst of the Keo I'i-Closs and bashler L Si > ,u. y -V-Vi i 0007--SWP-038177 N24276 CONT'f. li/* '**' ^ OUpo. Paar- ?33 '2 Znetnels toeing .revised to tlipim.te edited lead such r.s pifr.-'-r ts and driers, there only remains the .02 to y> lead in the tvr> i alkyd.s. Vhen the Iced has been removed fron these s-.iVyds v:* rill have a zero lead, content on the basis of ''added lead" for c vtry lerre setr.ent of our solvent type Trade Trodusis itenir. CFL:bf C. ?. LACfCXlKK OO07-SWP-OO0110359 0007-SWP-03817? OQ07t SWP-OOO1 10360 ('- 1 ?'> vnai-T of tN. s-timii'ir. r? Cor x :'>3"5'Z!I5<F* t>r V't" 3 '.:s of ory' 1 showed m 'i'-.-rL-i> ~-j Ujt.. run on stc'3 .'.i.ri ;>r j 'V: r `K Vr-rs. y H--r.i5'ity l> s!.s rv." Btri jyi pnirts. vi'ful r-` msiss -..n; in p.<H < *>!;:V-*,'tcr "C o?:.C ii;'ftV :w iictvc-.n r:? c; ,/r^T Yi N: eVc-Vr-' O.-2 "V r*r 0007--SWP--038180! 0007-SWP-000110361