Emery Industries

Emery Industries Th. Goldschmidt AG C. P. Hall Company Kluber Chemie KG... 

There are two commercial solvent crystaUi2ation processes. The Emersol Process, patented in 1942 by Emery Industries, uses methanol as solvent and the Armour-Texaco Process, patented in 1948, uses acetone as solvent. The fatty acids to be separated are dissolved in the solvent and cooled, usually in a double-pipe chiller. Internal scrapers rotating at low rpm remove the crystals from the chilled surface. The slurry is then separated by means of a rotary vacuum filter. The filter cake is sprayed with cold solvent to remove free Hquid acids, and the solvents are removed by flash evaporation and steam stripping and recovered for reuse (10). 

Thermal Oligomerization. Commercial manufacture of dimer acids began ia 1948 with Emery Industries use of a thermal process involving steam pressure. Patents were issued ia 1949 (45) and 1953 (46) that describe this process. Earlier references to fatty acid oligomerization, antedating the USDA work of 1941—1948, occur ia patents ia 1918 and 1919 (47,48), and ia papers written ia 1929—1941 (49—51). There appears to still be some small use of this approach to making dimer products. 

The oleic acid used by the submitters had a freezing point of — 2° to +13° and a boiling point of 182-187°/l-2 mm. It was a 90% middle cut from Emerson 233 as obtained from Emery Industries, Inc., Cincinnati, Ohio. The checkers found that the amount of color in the product was a function of the purity of the oleic acid. The product from distilled Emerson 233 was dark red-brown, whereas that from a purified grade of oleic acid was pale yellow. 

Azelaic acid obtained from Emery Industries, Inc., Cincinnati, Ohio, was recrystallized from water to a melting point of 101 102°. 

JACK B. BOYLAN, BRUCE J. BEIMESCH, and NICHOLAS E. SCHNUR Emery Industries, Inc., 4900 Este Avenue, Cincinnati OH 45232... 

The oldest process of organic electrochemistry is the indirect oxidation of hydrocarbons with chromic acid. It has been employed industrially for more than 90 years by Hoechst— now Clariant—in Gersthofen, Germany [102]. Other sites are or were located in Great Britain. The oxdiations of naphthalene, anthracene, and camphene are examples. Companies like Emery Industries, L. B. Holliday, and Boots have also used chromic acid regeneration commercially [103]. It has been employed for the bleaching of montan waxes for more than 70 years. 

Health Evaluation Report on Lauric Acid Exposure during Flaking and Bagging Operations at Emery Industries, Los Angeles, CA. National Institute for Occupational Safety and Health, HHE 80-160-897, NTIS Doc. No. PB 82-25694-2, 1981. 

Hydrogen peroxide to the rescue. Emery Industries of Cincinnati, Ohio is installing its first major ozone treatment system in Belle Glade. Ozone is 03. It breaks down into water and oxygen (H202 and 02) just like hydrogen peroxide. 

Dart Industries Dayco Corporation Diversified Industries Eagle-Picher Industries El Paso Company Emery Industries Esmark, Inc. 

A first patent for the technical implementation of ozonolysis of OA was claimed by Rieche [21]. According to a BASF patent filed in 1941, AA (97%) and PA (95%) are accessible by treatment of the ozonide with alkaline lye and Ag20 [22]. However, the technical manufacturing of AA succeeded first by Emery Industries in the year 1953 [23]. Their successor Emery Oleochemicals is still the worlds largest producer of AA by ozonolysis of OA with a production volume of about lOOOOt/year [9, 24]. The achievable yield of AA is 70-80% [24], based on the amount of applied OA. AA yields of more than 90% were obtained in a pilot plant [25]. The reaction is carried out in PA/water (70/30v/v) as solvent. The admixture of water reduces the formation of side products by removal of the heat of reaction via evaporative heat loss, and in addition, undesired reactive radicals are quenched by reaction with water [25, 26]. 

W.L. O Brien, inventor Emery Industries Inc., assignee US4062829,1977. 

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