Process for obtaining fatty acid alkyl esters, rosin acids...

C - Chemistry – Metallurgy – 11 – C

Patent

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C11C 3/04 (2006.01) C07C 51/44 (2006.01) C07C 67/02 (2006.01) C07C 67/08 (2006.01) C07C 67/54 (2006.01) C07J 9/00 (2006.01) C07J 75/00 (2006.01) C11C 3/00 (2006.01) C12P 7/62 (2006.01) C11B 13/00 (2006.01)

Patent

CA 2516598

The invention refers to a process for obtaining fatty acid alkyl esters, rosin acids and sterols from crude tall oil (CTO), which is characteri~sed by the following steps: (a) reacting the free fatty acids present in the CTO with lower alcohols; (b) esterifying the sterols in the CTO with boric acid or transesteri~ying with catalyst; (c) separating the fatty acid lower alkyl esters and rosin acids from 10 the remaining sterol borate esters or sterol esters of fatty acids to produce a stream of sterol esters; (d) separating the fatty acid alkyl esters from the rosin acids to pro~duce a first stream of fatty acid alky esters and a second stream of rosin a~cids; and (e) converting said sterol esters into the free sterols to produce a third stream of free sterols.

L'invention concerne un procédé d'obtention d'esters alcoyliques d'acides gras, d'acides résiniques et de stérols à partir de tall oil brut (CTO), lequel est caractérisé par les étapes suivantes : (a) la réaction des acides gras libres présents dans le CTO avec des alcools inférieurs ; (b) l'estérification des stérols dans le CTO avec de l'acide borique ou la transestérification avec un catalyseur ; (c) la séparation des esters alcoyliques inférieurs d'acides gras et des acides résiniques à partir des stérols estérifiés de borate ou des stérols estérifiés restants d'acides gras afin de produire un flux de stérols estérifiés ; (d) la séparation des esters alcoyliques d'acides gras des acides résiniques pour produire un premier flux d'esters alcoyliques d'acides gras et un second flux d'acides résiniques ; et (e) la conversion desdits stérols estérifiés en stérols libres afin de produire un troisième flux de stérols libres.

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