Eastman-kodak Company

Eastman Chemical Company

Martin D Dolfi

Charles Edwan Sumner, Jr

Scott Donald Barnicki

Guy R Steinmetz

Eric J Fugate

Thomas J Abraham, Jr

A process is provided which allows the isolation of sterols and a tocopherol concentrate in high yields from a deodorizer distillate (DOD) mixture obtained from the processing of, for example, soybean oils. Treatment of DOD with methanol at preferably 200.degree.-220.degree. C. in the presence of a monoalkyl- or dialkyl-tin compound results in the conversion of fatty acids and fatty acid esters into fatty acid methyl esters (FAME) and the liberation of free sterols and glycerin without appreciable degradation of tocopherols or sterols. The process can also be carried out in two steps where glycerin is used in the initial step and the fatty acids are converted into glycerides allowing the water of reaction to be removed as it is formed. The FAME produced by both methods are removed by a stripping operation to give a concentrate that allows the isolation of sterols in high yield and high purity and the isolation of a tocopherol concentrate by molecular distillation.

Process for the production of sterol and tocopherol concentrates

Disclosed is a process for dehydrohalogenating an aromatic bromide or iodide by contacting the aromatic halide with hydrogen at elevated pressure in the presence of an alkyl halide-forming compound and a Group VIII metal catalyst. The presence of the alkyl halide-forming compound, such as an alkanol, diol, triol or derivative thereof, facilitates the dehydrohalogenation reaction and permits the recovery of the halogen ad alkyl halides from which the bromide and iodide values can be economically recovered.

Process for dehydrohalogenating aromatic halides

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Kingsport, TN, United States of America

Martin D Dolfi