Method of improving the color of tall oil rosin

Details Method of improving the color of tall oil rosin Method of improving the color of tall oil rosin

C - Chemistry, Metallurgy

09

F

260/124

C09F 1/02 (2006.01)

Patent

CA 1274505

0410p Sanderson Case 13 METHOD OF IMPROVING THE COLOR OF TALL OIL ROSIN . Abstract of Disclosure Disclosed is a method of improving the color of tall oil rosin comprising the sequential steps of (a) solvent refining the tall oil rosin by (i) partitioning the tall oil rosin between an immiscible solvent system containing at least one non-polar solvent and one polar solvent, (ii) separating the polar solvent phase from the non-polar solvent phase, (iii) adding additional polar solvent to the resulting non-polar solvent phase, (iv) separating the polar solvent phase from the non-polar solvent phase and (v) removing the non-polar solvent; and (b) distilling the residue. The resultant tall oil rosin is about five color grades lighter than the starting tall oil rosin. Both the improved tall oil rosin and the esters produced therefrom are useful in the manufacture of a variety of products, such as paper and textile sizes, plasticizers for polyolefin films, paints, varnishes, hot melt adhesives and pressure sensitive adhesives.

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