| abstract |
Modified humins are prepared by contacting humins with a reactive compound, such as, a carboxylic acid, an acyl halide, a carboxylic anhydride, an olefin, an epoxy-group containing compound and combinations thereof in the presence of an organic aprotic solvent to obtain a humins-containing admixture; maintaining the humins-containing admixture at elevated temperature to achieve a reaction between the humins and the reactive compound, thereby obtaining modified humins; and recovering the modified humins. |