Method for Preparing a Stable Lignin-Phenol Blend and a Stable Lignin-Phenol Blend Obtained by Said Method

A method for preparing a stable lignin-phenol blend comprising the steps of:

• a) mixing a lignin source with a dispersion system comprising a solvent to at least partially disperse the lignin and to obtain a first mixture comprising a dispersed lignin fraction, a precipitated lignin fraction and the dispersion system,
• b) separating the precipitated lignin fraction from the dispersed lignin fraction to provide a second mixture comprising dispersed lignin and the dispersion system,
• c) mixing phenol with the second mixture comprising dispersed lignin and dispersion system to provide a third mixture comprising dispersed lignin, phenol and the dispersion system;
• wherein the second mixture comprising dispersed lignin and dispersion system is used without any further treatment before mixing with phenol;
• and
• d) optionally removing at least part of the dispersion system from the third mixture comprising dispersed lignin, phenol and dispersion system,
• e) obtaining a stable lignin-phenol blend with—content of solvent.