Abstract: A process for the preparation of cellulosic composites from divided cellulosic fibrous material, which process comprises a hydrothermolytic treatment of the divided cellulosic fibrous material, carried out at a temperature in the range of 160 to 200° C., using water as softening agent, a drying or a drying and a curing step and a step in which dried or dried and cured particles of treated material are contacted with an adhesive, subsequently curing the adhesive-laden particles at increased temperature and pressure under formation of the desired composite.