Document g2m56RxRJVddBOxxZL48p8ypG

/ * '*#Rwfe*5KSisxeiszxsitt-sse*^^ lidden Company ' loss Emulsion paint "INDEXED" iri8f53 t HBH0BAHDBH HEPQBT #M-29; CCs* My, John MarsteU,tlm,D-?W 1lf .Krl j,.B Bullitt, Lab, v;tw Hr* Jo- v. niff, 15 Hr, To ?, Rosbach, " Miss P, R. Stevenson, Lab, Dr, I, Shapiro, Lab, Philadelphia Laboratory February 21, 19^6 1 MARSHALL LAflflSATDEV UBBABV BYALDAglOl! OF gLMHH^a- "SPEED- The subject product has been evaluated and analysed to determine (1) -what sort of competition we will have to meet when ve put a gloss emulsion paint on the market and (2) how OXiddea has obtained some of their more desirable characteristies. Summary; The "Spred-Lustre seems to b a fairly good compan ion product for the emulsion type flats and is superior to any thing ye have to offer at the present time in gloss and film hardening rate, although inferior in tack-free drying time and hiding power. By comparison with medium or high quality gloss paints or enamels,however, it is an inferior product. We feel that an Improvement in application properties vs, either "SpredLustre or our product will be necessary before a gloss emulsion paint will gain wide acceptance, Analysis of the product shows if to be a high protein, very low oil paint, with probably large amounts of soap present, Possibly it is pigmented in the external or water phase,, /Sev eral speculations as to its composition are noted below. Properties; A detailed valuation of the product by Miss Stevenson shows the following; loss; Considerably higher than our semi-gloss emul sion paintsT^Tightly higher than our gloss emulsion, and near ly equal to a high gloss, high quality architectural enamel. Color; Very yellow. Tack-Free Drying Time; 26 to 28 hours at 10 to 20# and up to W^ourF^T^^rsXative humidity, although a slight "pressure tack" remains for at least a week* The film toughens N 30747 rapidly, leaver, and is superior to our semi-gloss emulsion which is, by comparison., soft and "cheesy" at 24 hours (See dry ing curves, book 3056, page .13), Film feature; Considerable seed present in all samples. Application Properties; Similar to our semi-gloss emul sion 0 The,TproSttcr"SSi^oo ^MchTBlip and not enough ''guts" under the brush for a trim enamel; it wipes off high spots too easily, The lap time is short and the lap is gummy. It is interesting to note that on the label (Hidden describes the product only as a wall finish. The leveling is only fair. Hiding Power; When adjusted to equal solids content, it is compaMb'Ie^o~^Sr semi-gloss emulsion. However, the prod uct is very definitely yellower than ours, which means that if the two were adjusted to equal color, the "Spred-Lustre would be definitely inferior in hiding, probably in the range of our lower pigment volume "gloss" emulsion. It is probably 25 to 500 in ferior to Super. White, Scrub Resistance; Ho quantitative data are available, although a'^uimi^Ivi^ilamiaation of pur first brush-out indi cates surprisingly good resistance to scrubbing away. Because of the "pressure tack", the film smudges badly after aging one week and is difficult to clean. Analysis; Analysis of the product as reported by Mr. 0?Connor (book 2997, pages 151 to I08) shows the following; Pigment (Ash); 93$ TiOg plus traces .of lead, sine aluminum and"eoSi1?rr^^5eia.d and cobalt are undoubtedly pre sent as driers. Pigment/total binder * 88/100. Vehiclet' fcrdiein. (soya) Oil Glyceride Eosin Glyceride 24.6$(Hot linseed, DCO or C0) 41.0$ 9.6jS Pbthallc Anhydride Solvents or "latroflers" pH of Paint. Hega&ive Ion. 9.7 The component relationships by comparison with our semi-gloss emulsion are as follows; DUP030002936 "Spred-Lustre" DuPont (Bar Formula) P/B Proto in/Qleo-resin Oil/Besin : Solids as Paekegod 88/100 29/71 28/62 55 *% /lOO 52/58 65.5^ Elsetenon Microscope examinations made by Dr. Shapiro do not Sbov*^OTonslely',lvSefhr the pigment is in the internal or external phase hut they do show definitely better dispersion (less lumping) than in our products. She scotoma extract (vehicle less the protein) is high in rosin content and shove 0.5$ ashf with sodium present. The vehicle, freed from protein, is readily emulsifiable in water. All of these facts show the presence of a strong emulsify ing agent, probably a soap, and we infer that a large proportion of rosin soaps may be present. Possibly the oil in the oleoresinous portion is tall oil. The very high pigment/resinous phase binder ratio would be difficult to duplicate from the operating standpoint (stiff mill base) and indicates a strong poaaibility^of an exter nal phase pigment, dispersed with a large quantity of soap and protein.: Prom the very short oil length and high protein content of the vehicle, w would predict rather poor general durability and cracking resistance. S@sMD, V. DUP030002937