Recovery of tetracosanol from a mixture derived from tall oil pitch

摘要

Described is a process to obtain tetracosanol from a complex mixture derived from tall oil pitch that comprises terpenoids, rosin alcohols, rosin aldehydes, aliphatic alcohols, hydrocarbons and stilbene derivatives. The process comprises a mixture crystallization step from hexane and a fractional distillation of the crystallized solids, which yields tetracosanol with more than 90% purity.

主权项

1. A process to obtain tetracosanol from a tetracosanol-containing matter composition wherein said tetracosanol-containing matter composition comprises:13-Epimanool0.01-15%8(17),E-13-epimanoy1-15-ol0.01-15%Abietadiene0.01-15%Abietal 0.1-15%Abietol 0.1-15%Agatadiol 0.1-55%Beta sitostanol   0-20%Beta sitosterol   0-20%Campestanol   0-20%Campesterol   0-20%Dehydroabietadiene0.01-15%Dehydroabietal 0.1-15%Dehydroabietol0.01-15%Docosanol 0.1-50%Eicosanol 0.1-30%Stigmasterol   0-20%Geranylgeraniol 0.1-15%Heneicosanol0.01-30%Hexacosanol 0.1-51%Isoagatadiol 0.1-55%Isopimaradiene 0.1-15%Isopimaral 0.1-50%Isopimarol 0.1-50%Manool0.01-15%Neoabietadiene0.01-15%Neoabietal0.01-15%Neoabietol0.01-15%Octacosanol 0.1-40%Palustral0.01-15%Pentacosanol0.01-30%Pimaradiene 0.1-15%Pimaral 0.1-50%Pimarol 0.1-30%Sandaracopimaral0.01-15%Sandaracopimaradiene0.01-15%Sandaracopimarol0.01-15%Squalene0.01-15%Terpineol0.01-15%Tetracosanol 0.1-60%trans-Comunal0.01-15%trans-Comunol 0.1-45%trans-Pinosylvin dimethyl ester 0.1-50%Tricosanol 0.1-20%and wherein the process comprises the steps of:
a) forming a mixture by contacting said matter composition with hexane and heating said mixture to form a solution of said matter composition in hexane; b) cooling down said solution to 10° C. or less to form a solid phase and a liquid phase; c) separating the solid phase from the liquid phase; and d) fractionating the solid phase through distillation to obtain a fraction comprising tetracosanol.