Chemistry: natural resins or derivatives; peptides or proteins; – Natural resins or derivatives – Recovery of tall oil or derivatives from papermaking waste,...
Patent
1998-09-15
2000-08-22
Nutter, Nathan M.
Chemistry: natural resins or derivatives; peptides or proteins;
Natural resins or derivatives
Recovery of tall oil or derivatives from papermaking waste,...
530207, 530208, 530230, 552545, C09F 700, C11D 1500
Patent
active
06107456&
ABSTRACT:
A method is set forth for separating a sterol or sterol ester from crude tall oil comprising fractionating the crude tall oil into a residue fraction and a volatile fraction, wherein the temperature of the residue fraction does not exceed about 290.degree. C., and wherein the residue fraction includes the sterol or sterol ester. By application of this method, which can be implemented in existing fractionating equipment or in specially designed pitch collecting apparatuses disclosed herein, the yield of sterols can exceed 50% with respect to the sterols present in crude tall oil. A method is also provided for separating unsaponifiable material from a tall oil stream comprising saponifying the stream with a mixture of sodium hydroxide and potassium hydroxide to form sodium and potassium salts of fatty acid, rosin acids, or both; evaporating the unsaponifiable material; and acidulating the unevaporated sodium and potassium salts.
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Huibers Derk T. A.
Robbins Andrew M.
Sullivan David H.
Arizona Chemical Corporation
Nutter Nathan M.
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