Naphtha Process Wool Scouring Preferred by America's Largest Wool Grease Producer Superior Wool and Wool Grease Result from Process Used Successfully for over 50 Years Though the bulk of the nation's wool processors still scour wool by t h e traditional "soap and water" emulsion process, William Whitman Co., Inc., Arlington Division has been using the Naphtha Process with outstanding success for more than half a century. As t h e nation's largest single recoverer of wool grease, Arlington prefers solvent extraction as a more efficient method of recovering the grease. It also improves the strength and softness of t h e finished wool.
3 Steps in
Extraction
Arlington uses two batteries of kiers, or digesters, with a total capacity of 10,000 pounds. After the kiers are loaded, they are sealed and the air is pumped out to a 25-inch vacuum. In the first step, the wool is in contact with 5,000 gallons of twice previously used Esso Hexane, until this solvent is saturated with wool grease. After this naphtha is emptied, 2,000 gallons of intermediate naphtha (used once) is then introduced into the kiers and kept there for a certain time interval. When this intermediate Hexane is emptied, 3,000 gallons of pure Hexane is then used. This completes the degreasing procedure. After all the free liquid has been drained off, the final traces of solvent left in the wool Naphtha P r o c e s s wool scouring proare driven out with a duces superior quality fops and yarns. heated inert gas and Aliphatic Hydrocarbons finally vacuum dried. Wool grease is used in compoundtion rates. Our technical men will Cut Costs in Ethyl ing lubricants, greases, rust prevenbe glad to analyze your solvents tives, cutting oils, in leather and fur problems without any obligation. Cellulose Lacquers dressing products, and as a basic For further information on Esso To prevent yellowing of finishes ingredient for animal vitamins such Solvents, drop a line today to our in blonde and bleached wood as irradiated cholesterol. sales office nearest your plant. furniture, the lacquer base of nitrocellulose is replaced -with ethyl cellulose. The preferred solvent combination consists of 70-90% aromatic hydrocarbons with 30-10Ç& alcohols. For even more economical solvent mixtures, petroleum distillates such as Esso Heptane a n d Esso VM&P Naphtha can be used to replace a high percentage of the aromatics. An e x c e l l e n t combination for uniform evaporation is isopropyl alcohol used in conjunction with Solvesso Toluol and Esso Octane.
V O L U M E
2 7,
NO.
Esso Hexane Now Used at Arlington Mills In the early history of this process, wide-cut petroleum solvents were used. Since early 1948, however, Arlington has used Esso Hexane, one of the new, highly refined closecuts. Featuring a boiling range of less than 15°F and a high degree of purity, Esso Hexane costs no more than many solvents with much wider boiling ranges. Esso offers a large selection of solvents with a variety of evapora-
4 7 . N O V E M B E R
21, 1949
tsso PETROLEUM SOLVENTS Sold i n : M a i n e , V t . , N . H., Mass., C o n n . , R. I., N . Y., Penna., N . J . , D e l . , M d . , D. C , V a . , W . V a . , Ν. C , S. C , Tenn., A r k . , La. ESSO STANDARD OIL C O M P A N Y - B o s t o n , M a s s . N e w York, N . Y . - E l i z a b e t h , N . J. — Baltimore, M d . —Richmond, Va.—Charleston, West Va.—Charlotte, N . C — C o l u m b i a , S. C — M e m p h i s , Tenn. —Little Rock, A r k . — N e w O r l e a n s , L a . ESSO STANDARD OIL COMPANY V A N I A - P h i l a d e l p h i a , Pa.
OF PENNSYL
3511
