El espíritu de Santi

An integrated process to produce vanillin and lignin-based polyurethanes from Kraft lignin

“…This lignin oxidation route has been extensively studied since the sixties (Bjorsvik, 1999;Diddams and Krum, 1970;Ness, 1983). The use of Kraft black liquor as raw material, instead of the conventional application of lignosulphonates, is lacking presently.…”